B CNG THNG

TRNG I HC CNG NGHIP TP. HCM KHOA CNG NGH HA HC

BO CO THC TP

NH MY X L KH DINH C

Ging vin hng dn: Sinh vin thc hin:

Chuyn ngnh: Bc: Lp Kha

: :

TP. H Ch Minh, thng 02 nm 2010

LI M UVi nhng hnh trang kin thc thu thp trong qu trnh hc tp v rn luyn ti trng s khng nu khng c qu trnh thc tp thc t ti cc nh my x nghip. Trong qu trnh thc tp, sinh vin s vn dng nhng kin thc hc vo nhng g ang din ra ti nh my, v qua qu trnh tm hiu ti nh my s gip sinh vin tip thu nhng kin thc khc m nh trng khng c iu kin ging dy. i vi nhng sinh vin nm cui nh em, thc tp s gip t mt phn vo qu trnh tm kim vic lm trong tng lai, cng nh nh hng li chnh ngnh ngh m mnh chn. Kt qu ca qu trnh thc tp ti cc nh my x nghip s nh gi chnh nng lc tip thu ca ngi sinh vin trong sut thi gian hc tp trng. Trong qu trnh thc tp ti Nh my x l kh Dinh C, lun lng nghe cc anh cc ch k s vn hnh ti Nh my tch gp kinh nghim trong qu trnh lao ng, v lun lun tun th cc nguyn tc an ton lao ng. Cun bo co thc tp tt nghip ny chnh l cng sc tch gp tt c cc ti liu v nhng ghi nhn t thc t thc tp ti Nh my v cc ch cng ngh trong nh my.

SINH VIN THC TP TI GPP

LI CM NTrong qu trnh thc tp ti Nh my x l kh Dinh C, em c anh YXX T ph T H Tr Sn Xut - Cn b hng dn thc tp ti nh my, di s hng dn ch bo tn tnh v quan tm ca anh m em mi hiu bit cc hot ng sn xut, nguyn tc hot ng ca tng thit b, ch cng ngh vn hnh ti nh my. Em xin gi li cm n su sc ti anh. Ngoi ra, Em cng cm n n cc anh ch l cn b trong Cng ty ch bin kh Vng Tu, v cc anh ch ang vn hnh ti Nh my x l kh Dinh C, gip , hng dn, v gii p nhng thc mc trong qu trnh thc tp. Em xin trn trng cm n:

C XYX ph Trng phng hnh chnh - t chc ca Cng ty ch bin kh Vng Tu.

Anh XYY Qun c Nh my x l kh Dinh C. Anh XXY ph Qun c Nh my x l kh Dinh C. Anh YYY cn b hng dn an ton lao ng ti nh my.

c c nhng hnh trang kin thc p dng vo trong qu trnh thc tp, em tri qu trnh hc tp v rn luyn ti trng i hc Cng nghip Tp HCM di s ging dy truyn t ca cc thy c trong Trung tm Cng ngh Ha hc, em xin gi li cm n n tp th cn b, ging vin Trung tm Cng ngh Ha hc. V c bit em xin gi li cm n n cc thy c trong t b mn Ha Du gip em c c chuyn i thc tp ti Nh my x l kh Dinh C. Cc thy cc c b cht thi gian lin h v to mi trng thc tp tt cho em. Em xin trn trng cm n:

C XXX gio vin hng dn thc tp.

Mt ln na, em xin gi li cm n ti tt c mi ngi gip em trong qu trnh thc tp v hon thnh tht tt chuyn i thc tp ti Nh my x l kh Dinh C. Xin chn thnh cm n!

SINH VIN THC TP TI GPP

NHN XT (ca ging vin hng dn)

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TNG CNG TY KH VIT NAM CNG TY CH BIN KH VNG TU NH MY X L KH DINH Ca ch: x An Ngi, huyn Long in, tnh B Ra Vng Tu Fax: 84.643.869105 84.643.869266 Tel: 84.643.869104 84.643.869106

Vng Tu, ngy 29 thng 01 nm 2010

NHN XT CA NH MY X L KH DINH C

H v tn sinh vin:........................................................................ Trng:.......................................................................................... Thi gian thc tp: t ngy ........................................................... Nhn xt ca cn b hng dn:................................................... ....................................................................................................... ....................................................................................................... ....................................................................................................... ....................................................................................................... ....................................................................................................... ....................................................................................................... .......................................................................................................

Cn b hng dn

Qun c

NHN XT (ca ging vin phn bin hoc b mn)

............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. .............................................................................................................................................

Nh my x l kh Dinh C

Bo co thc tp

MC LC

Trn Quc Ti

7

DANH SCH HNH NH, BNG BIU

Bng 1.1. Tr lng kh Vit Nam (t m3)........................................................trang 1 Bng 1.2. Thnh phn kh ca cc m..........................................................trang 1 & 2 Hnh 1.3. Cc dy chuyn kh ..............................................................................trang 4 Hnh 1.4. S h thng kh min Nam...............................................................trang 7 Hnh 1.5. Ton cnh tr s ca Cng ty ch bin kh Vng Tu ......................trang 8 Hnh 1.6. S t chc Cng ty ch bin kh Vng Tu ...................................trang 9 Hnh 2.1. Hnh nh nh iu hnh mi ..............................................................trang 11 Hnh 2.2. Nh my x l kh Dinh C ngy v m .........................................trang 12 Hnh 2.3. S t chc nhn s ca Nh my x l kh Dinh C ..................trang 13 Hnh 2.4. Biu th hin sn lng ca nh my giai on 1995 2008 .....trang 17 Hnh 3.1: S cng ngh ch AMF - Absolute Minimum Facility ..........trang 20 Hnh 3.2. S cng ngh ch MF Minimum Facility..............................trang 26 Hnh 3.3. S cng ngh ch GPP Gas Processing Plant.......................trang 33 Hnh 3.4. S cng ngh ch MGPP Modified Gas Processing Plant... trang 42 Hnh 3.5. T v tr slugcatcher quan st ton b nh my................................trang 51 Hnh 5.1. H thng my pht hin chy, r r kh.............................................trang 71 Hnh 5.2. B tr ng ng phng chy cha chy trn bn cha LPG..........trang 71 Hnh 5.3. H thng cha chy c nh.......................................................trang 72 & 73 Hnh 5.4. H thng cha chy di ng................................................................trang 74 Hnh 5.5. H thng bin bo an ton bo h lao ng.......................................trang 75

K HIU CC CM T VIT TT

PVN: PV GAS: KVT: KN GPP: AMF: MF: GPP: LPG: BUPRO:

Tp on Du Kh Quc Gia Vit Nam Tng Cng ty Kh Vit Nam Cng ty ch bin kh Vng Tu Cng ty vn chuyn kh ng Nam B Nh my x l kh Dinh C Absolute Minimum Facility Minimum Facility Gas Processing Plant Liquefied Petroleum Gases Hn hp butane v propane

Nh my x l kh Dinh C

Bo co thc tp

CHNG I: GII THIU CHUNGI. TI NGUYN KH THIN NHIN VIT NAM: Nn tng c bn pht trin ngnh cng nghip kh Vit Nam phi k n tim nng ngun kh. Vit Nam c ngun ti nguyn du kh vo loi trung bnh so vi cc nc trn th gii v ng hng th 3 trong khu vc (sau Indonesia v Malaysia). Theo Petro Vit Nam Gas, tng tim nng kh thin nhin c th thu hi vo khong 2.694 t m3 v tr lng pht hin vo khong 672 t m 3, tp trung ch yu cc b Nam Cn Sn, Malay Th Chu, Cu Long v Sng Hng. Bng 1.1. Tr lng kh Vit Nam Tn B Sng Hng Cu Long Nam Cn Sn M Lai Th Chu Cc vng khc Tng 210,6 319,2 Tr lng thc t ( t m3 ) 5,6 11,2 42,0 70,0 140,0 196,0 14,0 42, 0 Tr lng tim nng ( t m3 ) 28,0 56,0 84,0 140,0 532,0 700,0 84,0 140,0 532,0 700,0 1269 1736

Bng 1.2. Thnh phn kh trong cc m Bch H Cu t C1 C2 C3 71,59 12,52 8,61 76,54 6,98 8,25 77,25 9,49 3,83 Rng i Hng

iC4 nC4 Trn Quc Ti

1,75 2,96 1

O,78 0,94

1,34 1,26

Nh my x l kh Dinh C

Bo co thc tp

C+5 CO2, N2

1,84 0,72

1,49 5,02

2,33 4,5

Thnh phn kh ( % vol ) Cc Cu t C1 C2 C3 iC4 iC4 C+5 CO2, N2 Tin Hi 87,64 3,05 1,14 0,12 0,17 1,46 6,42 1,3 1,49 Rng ( m kh ) 84,77 7,22 3,46 1,76

II. GII THIU TNG CNG TY KH VIT NAM PV GAS:Tng Cng ty Kh Vit Nam - PV GAS l Cng ty trch nhim hu hn mt thnh vin c thnh lp trn c s t chc li Cng ty TNHH mt thnh vin Ch bin v Kinh doanh sn phm kh v cc n v thuc Tp on Du kh Quc Gia Vit Nam hot ng trn cc lnh vc thu gom, vn chuyn, ch bin, tng tr, phn phi v kinh doanh cc sn phm kh trn phm vi ton quc. 2.1. Hot ng chnh: - Thu gom, vn chuyn, tng tr, ch bin kh v sn phm kh; - Phn phi, kinh doanh cc sn phm kh kh, kh thin nhin ho lng (LNG), kh thin nhin nn ( CNG), kh du m ho lng ( LPG), kh ngng t (Condensate); kinh doanh vt t, thit b, ha cht trong lnh vc ch bin kh v s dng cc sn phm kh, kinh doanh dch v cng, kho bi; - u t c s h tng, h thng phn phi sn phm kh kh, kh lng; - Phn phi LPG t cc nh my lc ho du v cc ngun khc ca Tp on;

Trn Quc Ti

2

Nh my x l kh Dinh C

Bo co thc tp

- T vn thit k, lp d n u t, thc hin u t xy dng, qun l, vn hnh, bo dng, sa cha cc cng trnh, d n kh v lin quan n kh; - Nghin cu ng dng trong lnh vc kh, thit k, ci to cng trnh kh; - Nghin cu trong lnh vc kh, ci to, bo dng, sa cha ng c, lp t thit b chuyn i cho phng tin giao thng vn ti v nng, lm, ng nghip s dng nhin liu kh, dch v vn ti ca cc phng tin c s dng nhin liu kh; - Xut, nhp khu cc sn phm kh kh, LNG, CNG, LPG, Condensate v vt t thit b lin quan; - Tham gia u t cc d n kh thng ngun; - u t ti chnh; mua bn doanh nghip kh trong v ngoi nc. 2.2. Sn phm, dch v: - Kh kh - Kh ha lng (LPG) - Condensate, CNG, LNG - Vn chuyn, tng tr kh v sn phm kh - T vn thit k, vn hnh, bo dng, sa cha cng trnh kh; - u t ti chnh.Nh my in

M kh PM3 Kh kh

Khu cng nghip

Khu thng miTrm phn phi kh C Mau

Kh kh Giao thng vn tiCng ty vn chuyn kh ng Nam B

M kh Nam Cn Sn

Gin nn kh trung tm

H gia nhNh my x l kh Nam Cn Sn Kho cha Nam Cn Sn Nh my ch bin Condensate

Cond

M kh Bch HGin nn kh trung tm Kho cng Th Vi

Nh phn phi LPG, Condensate

Khu thng miNh my x l kh Dinh C

LPG

H gia nh

Trn Quc Ti

3

Nh my x l kh Dinh C

Bo co thc tp

Hnh 1.3. Cc dy chuyn kh 2.3. Cc d n khai thc v s dng kh thin nhin v kh ng hnh Vit Nam: 2.3.1. D n s dng kh ng hnh Rng ng- Bch H: Cng trnh c d kin ln doanh mt phn hoc ton b vi i tc nc ngoi. Song song vi qu trnh tm i tc lin doanh, chnh ph ph duyt thit k tng th v cho php trin khai cng trnh sm a kh vo b, vi mc ch cung cp cho nh my x l kh Dinh C v cc nh my in B Ra, Ph M v mt s cng trnh hng mc khc. Thit b tch kh cao p trn gin cng ngh trung tm s 2 ti m Bch H. Gin ng ng v cc cng trnh ph tr ti m Bch H. ng knh ng ng 16 inch di 124km t Bch H vo n B Ra. Trm x l kh Dinh C. Trm phn phi kh ti B Ra. Trm iu hnh trung tm Vng Tu. Cc cng trnh tiu th kh bao gm cc nh my in B Ra, Ph M cng c trin khai xy dng. 2.3.2. D n kh Nam Cn Sn: D n kh Nam Cn Sn l d n kh ln nht hin nay ti Vit Nam bao gm: gin khai thc, h thng ng ng dn kh t ngoi khi vo b di 400km, Nh my x l kh Dinh C, Trung tm phn phi kh ti Ph M v h thng ng ng dn kh Ph M- Tp H Ch Minh.D n c a vo vn hnh t cui nm 2002 hin nay cng sut ca nh my x l kh Nam Cn Sn ti Dinh C t n 20 triu m3 kh/ngy. 2.3.3. D n kh l B&52- Mn: D n kh l B&52 Mn c u t xy dng vn chuyn kh t nhin t cc m kh ti l B&52; khu vc bin Ty Nam, Vit Nam cp kh cho cc nh my in ti Mn, Tr Nc cng nh cc khch hng khc thuc khu phc hp kh- in- m C Mau vi cng sut thit k trn 6 t m3 kh/nm.Trong tng lai, h thng ng ng dn kh ca d n s c xem xt kt ni vi h thng ng ng quc gia v h thng ng ng khu vc ASEAN. Trn Quc Ti 4

Nh my x l kh Dinh C

Bo co thc tp

2.3.4. D n kh PM 3 C Mau: D n kh PM 3 C Mau l mt phn quan trng ca d n kh- in- m C Mau, c ng ng dn kh di khong 400km t m PM 3 thuc vng chng ln Vit Nam v Malaysia vo Khu cng nghip Khnh An, C Mau vi cng sut vn chuyn 2 t m3 kh/nm cung cp kh cho Nh my nhit in C Mau I v II c tng cng sut 1.500 MW v Nh my phn m C Mau c cng sut 800.000 tn/nm. 2.3.5. D n nhp khu kh bng ng ng v nhp khu kh thin nhin ho lng (LNG) bng tu: Do kh v cc sn phm kh c tnh u vit hn hn cc loi nhin liu truyn thng v nhit tr, sut tiu hao nhit, gp phn m bo cht lng sn phm, hn ch nhim mi sinh mi trng v ng gp mt vai tr quan trng trong chin lc an ninh nng lng ca quc gia, nn mc d mi ch tri qua gn 20 nm hnh thnh v pht trin, ngnh cng nghip kh Vit Nam pht trin mnh m v c th s b thiu kh trong tng lai khng xa.V vy, PV Gas hin nay ang tch cc trin khai cng tc nhp khu kh pht trin ngun cung cp kh cho th trng kh Vit Nam. V tr a l thun li ca Vit Nam cho php PV Gas c th nhp khu kh bng hai phng n: nhp khu kh bng ng ng v nhp khu LNG bng tu. 2.3.5.1. Nhp khu kh bng ng ng: Do nm trong khu vc gn cc nc c kh nng xut khu kh bng ng ng ln, c bit l Indonesia v Malaysia- hai quc gia c tr lng kh thin nhin rt ln v vi h thng ng ng dn kh hin i c th kt ni vi h thng ng ng khu vc chu , nn PV Gas s nhp khu kh bng ng ng v cp cho cc h tiu th khu vc Nam B. 2.3.5.2. Nhp khu LNG bng tu: Ngy nay, LNG l loi nhin liu ang c nhiu nc trn th gii cng nh Vit Nam quan tm p ng nhu cu tiu th nng lng tng nhanh do nhng li ch v mi trng, s linh hot trong vn chuyn, gi c cnh tranh so vi cc loi nhin liu khc c ngun gc t du m.Do , PV Gas bt u trin khai nhng bc i u tin ca d n nhp khu LNG bng tu nh: kho st th trng tiu th, tm ngun cung cp, kho st a im xy dng c s h tng, chun b nhn lc,vi mc tiu sm c LNG nhp khu cho th trng Vit Nam. Trn Quc Ti 5

Nh my x l kh Dinh C

Bo co thc tp

2.3.5. D n kho lnh kh du m ho lng (LPG): Vi mc tiu pht trin c s h tng phc v vic tng tr v kinh doanh ( bun bn) LPG , PV Gas ang hp tc nc ngoi xem xt u t kho lnh cha LPG ti Th Vi vi cng sut cha 60.000 tn LPG.Kho lnh cha LPG i vo hot ng s tr thnh kho u mi cha LPG ln nht Vit Nam, cho php PV Gas nhp khu LPG vi khi lng ln t tu lnh v xut i p ng nhu cu tiu th LPG ni a v cc nc trong khu vc.

Bch h D n t Block BPipeline: 145 KM Cng sut: 1.5 BCM

Nam Cn SnPipeline: 400 KM Cng sut: 3.5 BCM

PM 3 C MauPipeline: 325 KM Cng sut: 2.0 BCM

Hnh 1.4. S h thng kh min Nam

III. GII THIU V CNG TY KH VNG TU:3.1. Hnh thc php l: Cng ty ch bin kh Vng Tu l chi nhnh ca Tng cng ty Kh, n v hoch ton ph thuc, trc thuc Tng cng ty Kh c thnh lp theo quyt nh s: 1520/Q- TCTK ngy 15/08/2007 ca HTV Tng cng ty Kh. 3.2. Tn gi v tr s: - Tn gi y : Chi nhnh cng ty TNHH mt thnh vin Tng cng ty Kh- Cng ty ch bin Kh Vng Tu Trn Quc Ti 6

Nh my x l kh Dinh C

Bo co thc tp

- Tn vit tt: KVT - Tr s Cng ty: 101 ng L Li, Phng 6, Thnh ph Vng Tu, tnh B Ra Vng Tu. - in thoi lin h: 064.2250150; 064.2250151; 064.3833622; 064.3591795; 064.3837069; 064.3839812; - Fax : 064.3838257

Hnh 1.5. Ton cnh tr s ca Cng ty ch bin kh Vng Tu 3.3. Phm vi hot ng: a bn tnh B Ra Vng Tu. 3.4. Ngnh ngh kinh doanh: - Vn chuyn, tng tr, ch bin kh v sn phm kh - Kinh doanh dch v Cng, kho bi - Qun l, vn hnh cc cng trnh, d n kh v lin quan n kh - Nghin cu ng dng trong lnh vc tng tr,ch bin kh v sn phm kh - Cung cp dch v o to vn hnh h thng cng trnh kh - Nhp khu vt t, thit b v phng tin phc v cho cng trnh kh - Cc ngnh ngh kinh doanh khc khi c Tng cng ty kh giao, tun th cc quy nh ca php lut. Trn Quc Ti 7

Nh my x l kh Dinh C

Bo co thc tp

3.5. Nhng sn phm v dch v chnh: Sn phm KVT cung cp: - Kh kh thng phm - Kh ho lng LPG - Condensat. Dch v: - Cc dch v / h tr k thut, KVT cung cp c lin quan n vic tiu th cc sn phm trn. - Dch v vn chuyn condensat Nam Cn Sn; - Dch v Cng: tng tr sn phm lng; xut/nhp xng, reformat, VCM, ; cung ng nc ngt; - o to vn hnh h thng cng trnh kh cho cc n v ngoi TCT; 3.6. S lc pht trin ca Cng ty ch bin kh Vng Tu: Tin thn l trung tm vn hnh h thng dn kh thnh lp ngy 31/03/1995 vi chc nng tip nhn, qun l v vn hnh cng trnh kh Bch H bao gm: - ng ng dn kh ngoi bin v trn b - Nh my x l kh Dinh C, kho xut sn phm lng Th Vi - Cc trm phn phi kh v cc cng trnh ph tr. Ngy 12 thng 09 nm 2002 chuyn thnh X nghip ch bin kh: mt phn tch ra t trung tm vn hnh v st nhp vi mt phn t i dch v kh. Ngy 15 thng 08 nm 2007 tr thnh cng ty Ch bin kh Vng Tu.

Trn Quc Ti

8

Nh my x l kh Dinh CB A N TN G GI M C C N G TY

Bo co thc tp

P H N G H C TC

PH N G K TO N

P H N G K TSX

PH N G U T XD C B

PH N G TM - H

PH N G AT - BV

KHO CNG TH V I

N H MY GPP

T H TSX T H TSX

04 C A V N H N H

04 T B O V

04 C A V N HNH

TR M N P LP G T U C H E LSE A B R ID GE 04 T B O V

Hnh 1.6. S t chc Cng ty ch bin kh Vng Tu

Trn Quc Ti

9

Nh my x l kh Dinh C

Bo co thc tp

CHNG II NH MY X L KH DINH CI. CHC NNG - NHIM V CA NH MY:- Tip nhn v x l ngun kh ng hnh t m Bch H, Rng ng v cc m khc trong b Cu Long. - Phn phi sn phm kh kh n cc nh my in, m v cc h tiu th cng nghip. - Bm sn phm LPG, condensate sau ch bin n cng PV Gas Vng Tu tng cha v xut xung tu ni a. - Xut LPG cho cc nh phn phi ni a bng xe bn (khi cn).

II. S LC V NH MY:Nh my kh ho lng (LPG) u tin ca Vit Nam c khi cng xy dng ngy 04/10/1997 hp ng k ngy 04/09/1997 vi cc n v thng thu l T hp Samsung Engineering Company Ltd (Hn Quc) cng cng ty NKK (Nht Bn) theo phng thc trn gi (EPCC) bao gm thit k, mua sm, thi cng, lp t v chy th, nghim thu theo ng tiu chun quc t v cc quy nh ca Nh nc Vit Nam v xy dng, an ton, mi sinh, mi trng, phng chy cha chy Ton b nh my LPG v h thng thu truyn d liu c iu khin t ng, tng s vn u t l 79 triu USD, 100% vn u t ca Tng cng ty du kh Vit Nam (PetroVietNam), c xy dng ti Dinh C thuc x An Ngi, huyn Long in, tnh B Ra- Vng Tu vi din tch 89.600 km2. Nh my c thit k vi cng sut u vo 1,5 t m3 kh/nm v c 3 giai on vn hnh theo ch nhm p ng tin cung cp sn phm. Giai on thit b cc ti thiu (AMF) ch sn xut condensate n nh vi cng sut 342 tn/ngy v 3,8 triu m3 kh/ngy, hot ng vo thng 10/1998. Giai on thit k ti thiu (MF) sn xut condensate n nh vi cng sut 380 tn/ngy, hn hp butan- propan vi cng sut 629 tn/ngy v 3,5 triu m3/ngy kh kh, hot ng vo thng 12/1998. Trn Quc Ti 10

Nh my x l kh Dinh C

Bo co thc tp

Hnh 2.1. Hnh nh nh iu hnh mi

Trn Quc Ti

11

Nh my x l kh Dinh C

Bo co thc tp

Giai on nh my hon chnh (GPP) sn xut condensate n nh, butan v propan c tch c lp v kh kh. Giai on hon chnh vi cng sut kh u vo l 1,5 t m3 kh/nm thu hi propan: 537 tn/ngy; 417 tn/ngy; condensate: 402 tn/ngy v kh kh:3,34 triu m3/ngy. Giai on ny s dng cng ngh Turbo-Expander vi kh nng thu hi sn phm lng cao.

Hnh 2.2. Nh my x l kh Dinh C ngy v m

III. T CHC NHN S CA NH MY:Trn Quc Ti 12

Nh my x l kh Dinh C

Bo co thc tp

Qun c nh my: L Tt Thng Ph qun c nh my: Nguyn Hi HngQUN C

PH QUN C

Vn th - Tp v (3)

KP 1

KP 2

KP 3

KP 4

i BVVT

T HTSX

01 02 01 02 02 03 02 03

Trng ca KS Cng ngh KS iu khin KS C kh KS in KTV Cng ngh VHV LDA CS PCCC

01 02 01 02 02 03 02 03

Trng ca KS Cng ngh KS iu khin KS C kh KS in KTV Cng ngh VHV LDA CS PCCC

01 02 01 02 02 03 02 03

Trng ca KS Cng ngh KS iu khin KS C kh KS in KTV Cng ngh VHV LDA CS PCCC

01 02 01 02 02 03 02 03

Trng ca KS Cng ngh KS iu khin KS C kh KS in KTV Cng ngh VHV LDA CS PCCC

01 Ch huy trng Tiu i BVVT (04) - Tiu i trng - Chin s s 1 - Chin s s 2 - Chin s s 3

01 02 01 04 02 01 01 01

T trng CB An ton KTV PTN KTV BD ngy KS iu khin KS C kh KS in KS Ho du

Tng: 16

Tng: 16

Tng: 16

Tng: 16

Tng : 18(01 DP)

Tng : 13

Hnh 2.1. S t chc nhn s ca Nh my x l kh Dinh C

IV. NGUN NGUYN LIU SN XUT:4.1. Nguyn liu u vo theo thit k: Kh ng hnh t m Bch H t ngoi khi Vng Tu c vn chuyn bng ng ng dn 16 inch ti Long Hi v c x l ti Nh my x l kh Dinh C. - p sut: 10900 kPa - Nhit : 25.60C - Lu lng: 1.5 t m3/nm (4.3 triu m3/ngy trn c s vn hnh 350 ngy) - Hm lng nc: bo ha (trn thc t th hm lng nc trong kh c x l ti gin) - Thnh phn kh:

Thnh phn N2 Trn Quc Ti 13

Nng (phn mol) 2.0998E-3

Nh my x l kh Dinh C

Bo co thc tp

CO2 C1 C2 C3 iC4 nC4 iC5 nC5 C6 C7 C8 C9 C10 CycloC5 McycloC5 CycloC6 McycloC6 Benzene Nc Tng

5.9994E-4 0.7085 0.1341 0.075 0.0165 0.0237 6.2994E-3 7.2993E-3 5.0995E-3 2.5997E-3 1.7998E-3 7.9992E-4 2.9997E-4 4.9995E-4 4.9995E-4 3.9996E-4 4.9995E-4 3.9996E-4 0.013 1.000

4.2. Nguyn liu u vo theo thc t vn hnh hin nay: T nm 2002, nh my tip nhn thm ngun kh ng hnh t m Rng ng c a vo gin nn trung tm qua ng ng 16 inch di khong 40km th thnh phn kh vo b thay i nh sau:

Thnh phn N2 CO2 C1 C2 C3 iC4 nC4 Trn Quc Ti

Kh Rng ng % mol 0.144 0.113 78.650 10.800 6.601 1.195 1.675 14

Kh Bch H % mol 0.129 0.174 74.691 12.359 7.040 1.535 2.191

Kh v b % mol 0.123 0.044 74.430 12.237 7.133 1.576 2.283

Nh my x l kh Dinh C

Bo co thc tp

iC5 nC5 C6 C7 C8+ H2O (g/m3) H2S (ppm) Tng

0.297 0.257 0.157 0.084 0.026 16

0.549 0.592 0.385 0.135 0.220 0.12 10.0 100.000

0.604 0.664 0.540 0.271 0.094 0.113 10.0 100.000

Cng vi s thay i thnh phn kh vo b, lu lng kh m cng tng t 4.3 triu m3/ngy (theo thit k ban u) ln khong 5.7 triu m3/ngy. Trong bao gm t 1.5 1.8 triu m3/ngy kh t m Rng ng v 4.2 4.8 triu m3/ngy kh t m Bch H. 4.3. Kim tra ngun nguyn liu: Cc thng s cn kim sot: - Hm lng hydrocarbon - Cc tp cht c hi: H2O, S, Hg - Kh tr: CO, N2 - p sut & lu lng dng kh.

V. SN PHM CA NH MY:Cc sn phm kh ca nh my x l kh Dinh C bao gm: kh kh thng phm, condensate, hn hp bupro, propane, butane. 5.1. Kh kh: AMF 3.95 4700 20.9 15 20.3 MF 3.67 4700 27.2 4.6 -10.7 GPP 3.44 4700 56.4 6.6 -38.7 GPPM 5.03

Lu lng (triu m3/ngy) p sut (kPa) Nhit (oC) im sng nc (oC) im sng hydrocarbon (oC) 5.2. Condensate:

Lu lng (tn/ngy) Trn Quc Ti

AMF 330 15

MF 380

GPP 400

GPPM 542

Nh my x l kh Dinh C

Bo co thc tp

p sut (kPa) Nhit (oC) Hm lng C4 max (%) 5.3. Bupro (ch MF):

800 45 2

800 45 2

800 45 2

AMF Lu lng (tn/ngy) p sut (kPa) Nhit (oC) 5.4. Propane: AMF Lu lng (tn/ngy) Hiu sut thu hi (%) p sut (kPa) Nhit (oC) Hm lng C4 max (%) 5.5. Butane: AMF Lu lng (tn/ngy) Hiu sut thu hi (%) p sut (kPa) Nhit (oC) Hm lng C5 max (%)

MF 640 1300 47.34

GPP

GPPM

MF

GPP 535 85.2 1800 45.57 2.5

GPPM 419

MF

GPP 415 92 900 45 2.5

GPPM 515

Trn Quc Ti

16

Nh my x l kh Dinh C1,800 1,600 1,400 1,200 1,000900 1,027

Bo co thc tp372 352 1,577 372 353 1,617 1,618 1,613 1,623 338

LPG Condensate Kh kh268 298 1,223 1,233

400 350 3001,265 259 1,179

282

250 200

800 600 400281

158 134 532 80 112

148

158 132

150118 107 81

10072

200 0

183 1 9

50 0

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008

Hnh 2.3. Biu th hin sn lng ca nh my giai on 1995 - 2008

Trn Quc Ti

17

Nh my x l kh Dinh C

Bo co thc tp

CHNG III QUY TRNH CNG NGH m bo cho vic vn hnh nh my c linh hot phng mt s thit b chnh ca nh my b s c, v hot ng ca nh my c lin tc khi thc hin bo dng, sa cha cc thit b khng gy nh hng n vic cung cp kh cho nh my in, m, nh my c lp t v hot ng theo cc ch chnh: - Ch AMF (Ablolute Minium Facility): Cm thit b ti thiu tuyt i. - Ch MF (Minium Facility): Cm thit b ti thiu. - Ch GPP (Gas Processing Plant): Cm thit b hon thin. - Ch MGPP (Modified Gas Processing Plant): Ch GPP sa i Ngoi 4 ch trn trong qu trnh vn hnh nh my ty theo tnh trng vn hnh bo dng ca thit b m VHV c th linh hot iu chnh ch vn hnh m bo tnh an ton v hiu qu thu hi lng ti a. Nh my GPP c thit k da trn lu lng kh m l 4,3 triu m3/ngy. Vi lu lng ny, p sut u vo nh my s khong 109 barG v l thng s quan trng quyt nh hiu sut lm vic ca cc thit b bn trong nh my. Nm 2001 cng vi vic a kh Rng ng vo x l, lu lng kh qua nh my t mc ti a khong 5,7 triu m3/ngy, p sut u vo GPP gim xung cn khong 70-75 barG, cm my nn K-1011 c lp t nhm nng p sut kh u vo ti p sut thit k 109 barG. T s cng ngh chnh ca nh my c mt s thay i chnh gm: - Kh u vo GPP c nng p t 70-75 barG ti 109 barG v nhit kh sau trm nn K-1011 tng ln khong 45C cao hn so thit k. - p sut bnh tch V-03 gim t 75 barG xung 45 barG t 2 mc ch: (a) lng kh m vt qu cng sut vn hnh ca GPP c bypass qua V-101 cp thng cho cc h tiu th. Lng tch c V-101 s c a v V-03 x l. (b) lng tch c ti Scrubber trc K-1011 cng c a v V-03 m bo an ton. Trn Quc Ti 18

Nh my x l kh Dinh C

Bo co thc tp

Trong cc ch vn hnh ni trn, hai ch AMF, MF l cc ch c thit k vn hnh trong giai on lp t chy th. Sau khi hon thnh vic lp t, cc ch ny rt t khi c vn hnh v n lm gim kh nng thu hi sn phm lng. Trong trng hp mt s thit b trong ch GPP b hng th nh my mi chuyn sang ch AMF hoc MF duy tr hot ng ca nh my. Thc cht, nh my hot ng vi 3 ch chnh l AMF, MF, GPP cn ch MGPP l p ng nhng yu cu thc t hin ti trong qu trnh cung cp kh. Do nhu cu ca th trng khng cn tch butane v propane ring, m ch cn hn hp LPG s dng cho nhu cu t dn dng nn thp C3/C4 Splitter khng c s dng. Mc khc k t nm 2002, nh my tip nhn thm dng kh t m Rng ng nng lu lng dng v b l 5.7 triu m3/ngy, tuy nhin lu lng kh v b tng nhng p lc u vo gim xung cn 70 bar n 80 bar, v vy m bo p lc u vo v cng sut vn hnh ca nh my, nn lp t thm 4 my nn K-1011A/B/C/D v ng r qua bn V-101.

I. CH AMF ABSOLUTE MINIMUM FACILITY:Ch AMF l ch hot ng ti thiu, s dng nhng ng ng dn chnh ca nh my. Trong ch ny, qu trnh kh nc khng c thc hin. Ngun kh ng hnh t m sau khi c tch s b ti Slug Catcher s c a ti my nn Jet Compressor, p sut u ra ti my nn c duy tr 45 bar. My nn Jet Compressor c nhim v duy tr p sut thp Deethanizer lun 20 bar. Mc ch chnh ca ch AMF l cung cp ngun kh cho nh my in m, lng lng thu hi c rt t.

Trn Quc Ti

19

Nh my x l kh Dinh C

Bo co thc tp ME-13 EJ-01

Kh thng phm

C-05V-08 SC

K hiuC: Thp tch phn on V: Thit b tch SC: Slugcatcher E: Thit b trao i nhit P: Bm cC-01 ME: Thit b o mDu nng

Kh ng hnh

E-07

V-03

NcME-24

Condensate

E-09

E-04

V-15

E-01A/B

Du nng TK-21

Hnh 3.1: S cng ngh ch AMF - Absolute Minimum Facility

Trn Quc Ti

20

Nh my x l kh Dinh C

Bo co thc tp

1.1. M t s dng Ch AMF theo thit k l ch vn hnh nh my ban u vi cc thit b ti thiu nhm cung cp kh cho cc h tiu th v khng ch trng vo thu hi sn phm lng. S cng ngh ch AMF c m t theo hnh v nh km. Ch AMF c th c m t nh sau: Kh ng hnh m Bch H vi lu lng kh m l khong 4,3 triu m3/ngy c a ti Slug Catcher ca nh my bng ng ng 16 inch vi p sut 109 bar, nhit 25,6C. Ti y, Condensate v kh c tch ra theo cc ng ring bit tip tc x l, nc c trong Condensate c tch nh trng lc v a vo bnh tch nc (V-52) x l. Ti y nc c lm gim p ti p sut kh quyn v hydrocacbon b hp th s c gii phng a vo t h thng ct uc, nc sau c a ti hm t (ME-52). Dng lng i ra t Slug Catcher (SC) c gim p v a vo bnh tch V-03 hot ng 75 bar v c duy tr nhit 20C. V-03 c nhim v: Tch hydrocacbon nh hp th trong lng nh gim p. Cng vi vic gim p sut t 109 bar xung 75 bar, nhit cng gim thp hn nhit hnh thnh hydrate nn trnh hin tng ny, V-03 c gia nhit n 20oC bng du nng nh thit b gia nhit E-07. Sau khi ra khi V-03 dng lng ny c trao i nhit ti thit b E-04A/B nhm tn dng nhit v lm mt cho dng condensate thng phm. Dng kh thot ra t Slug Catcher c dn vo bnh tch lc V-08 tch trit cc ht lng nh b cun theo dng kh do SC khng tch ht v lc cc ht bi trong kh (nu c) trnh lm h hng cc thit b sau. Kh t u ra ca V-08 c a vo thit b ho dng EJ-01 A/B/C gim p sut t 109 bar xung 47 bar. Vic gim p ny c tc dng ht kh t nh thp C-01. Dng ra l dng hai pha c p sut 47 bar v nhit 20C cng vi dng kh t V-03 ( gim p) c a vo thp C-05. Nhim v ca EJ-10A/B/C:Gi p sut lm vic ca thp C-01 n nh. Thp C-05 hot ng p sut 47 bar, nhit 20C. ch AMF phn nh ca thp hot ng nh bnh tch kh lng thng thng. Thp C-05 c nhim v tch phn lng ngng t do s st p ca kh t 109 bar xung 47 bar khi qua EJ-01 A/B/C. Dng kh ra t nh thp C-05 c a ra ng kh thng phm Trn Quc Ti 21

Nh my x l kh Dinh C

Bo co thc tp

cung cp cho cc nh my in. Lng ti y C-05 c a vo a th 1 ca thp C-01. Ch AMF thp C-01 c 2 dng nhp liu : - Dng t V-03 vo a th 14 ca thp C-01. - Dng lng t y ca thp C-05 vo a trn cng ca thp C-01. p sut hi ca Condensate gim i v c iu chnh trong thp C-01 nhm mc ch: Ph hp cho vic cha trong bn cha ngoi tri. Vi ngha , trong ch AMF thp C-01 hot ng nh l thp n nh Condensate. Trong , phn ln hydrocacbon nh hn Butan c tch ra khi Condensate nh thit b gia nhit E-01 A/B n 194C. Kh ra nh thp c nhit 64C c trn vi kh nguyn liu nh EJ-01 A/B/C. Dng Condensate y thp c trao i nhit ti E-04A/B v c lm lnh bng khng kh E-09 gim nhit xung 45C trc khi ra ng ng dn Condensate v kho cng hoc cha bn cha TK-21. 1.2. Qu trnh x l Condensate trong ch hot ng AMF: p sut ca bnh tch 3 pha V-03 c iu chnh 75 barG1bng van iu p PV-1209 c lp t trn ng ng dn kh t V-03 ti u vo thp C-05, Rectifier. Nhit u ra van iu p PV-1209 l khong 3C, thp hn hit to thnh hydrate (16.5C) nn c kh nng hydrate s c to thnh khi i qua van iu p tuy nhin n s b t tan do thp C-05, Rectifier trong ch hot ng ny c nhit vn hnh ln hn 20C. Condensate t V-03 c chuyn n thp tch ethane C-01 (Deethanizer) sau khi c gia nhit t 20C n 101C trong thit b trao i nhit E-04A/B (Condensate Coss Exchanger) vi mt dng nng 194C i vo t thp tch ethane C-01. Mc ch chnh ca thit b trao i nhit ny l tn dng v thu hi nhit t dng nng, trnh hin tng to hydrate u ra ca FV-1701 (trong qu trnh gim p t p sut vn hnh ca V-03 xung 20 BarG) bng cch duy tr nhit hot ng 72C, cao hn nhit to thnh hydrate (11.6C) trong iu kin ny.1.3 H thng Ejector trong ch hot ng AMF:

Trn Quc Ti

22

Nh my x l kh Dinh C

Bo co thc tp

i vi qu trnh x l kh t Slug Catcher trong ch hot ng AMF, cc thp hp ph loi nc V-06A/B (Dehyration Adsorber) s khng vn hnh. Kh t SC s c a ti h thng Ejector EJ-01A/B/C (Jet Compressor). Qua thit b ny p sut gim t p sut vn hnh ca SC xung 45 BarA, mc ch ca h thng Ejector l nn kh i ra t nh thp tch ethane C-01 t 20 BarA n 45 BarA, v vy p sut ca thp tch C-01 c gi 20 BarA. H thng Ejector bao gm 03 Ejector, cng sut ca mi Ejector ln lt l 50%, 30% v 20% lu lng dng i qua Ejector. Van iu p (PV-0805) trn ng Ejector bypass c cng sut khong 30% tng th tch dng ra, iu chnh p sut ca thp tch ethane C-01 20 BarA bng cch cho bypass 1 phn dng kh qua Ejector khi cng sut ca h thng Ejector duy tr p sut C-01. Khi cng sut ca h thng Ejector nh hn cn thit, lng kh d t thp tch ethane s c x ra uc t qua van iu p (PV-1303B) v vy h thng tch ethane c bo v khng c hin tng qu p.1.4 Thp tch C-05 Rectifier trong ch hat ng AMF.

Dng kh t h thng Ejector v dng kh t bnh tch V-03 c chuyn n a th nht ca thp C-05 (Rectifer) tch lng ra khi kh nhit 20.7oC v p sut 45 BarA c iu chnh bi thit b iu chnh p sut (PIC-1114) lp t trn ng ng dn kh thng phm. Phn trn ca thp C-05 lc ny c tc dng nh mt bnh tch lng hi (Gas-Liquid Seperator). Trong ch hat ng AMF, Turbo-Expander (CC-01) v thit b trao i nhit kh lnh/kh (E-14) khng c a vo hot ng, do vy dng kh t nh thp tch C05 c chuyn n ng ng dn kh thng phm thng qua van PV-1114A c lp t trn ng ng iu chnh p sut u ra ca nh my khong 45 BarA. Dng lng t y thp C-05 c iu khin thng qua thit b iu chnh dng (FIC-1201) cng vi thit b iu chnh mc cht lng (LIC-1201A) a vo a u tin ca thp tch Ethane (C-01).1.5 Thp tch Ethane trong ch hot ng AMF.

Trn Quc Ti

23

Nh my x l kh Dinh C

Bo co thc tp

Trong ch hot ng AMF, thp tch ethane (C-01, Deethanizer) c hai dng nguyn liu u vo, l dng lng i ra t bnh tch V-03 v dng lng i ra t y thp tch tinh C-05 (Rectifer). Dng lng i ra t y thp tch tinh C-05 c a vo a u tin ca thp tch ethane C-01 bao gm 80% phn mol cht lng v ng vai tr nh dng hi lu ngoi cho qu trnh chng ct. Dng lng i t bnh tch V-03 c a vo a th 14 ca thp tch ethane C-01, (i vi ch hot ng MF v GPP th a vo a th 20). p sut hi ca condensate c iu chnh trong thp C-01 xung thp hn p sut kh quyn lu tr trong cc bn cha thng thng. Trong trng hp ny, thp tch ethane c tc dng nh mt thp n nh Condensate, ti thp ny hu ht cc hydrocacbon nng hn butan c tch ra khi Condensate thng qua vic cung cp nhit cho cc reboiler E-01A/B ln ti 194oC. Dng kh i ra t nh c nhit l 64oC c trn vi dng kh thng phm bng h thng Ejector.1.6 Thit b iu chnh p sut kh trong ch hot ng AMF.

Trong ch hot ng AMF, ti u vo ca nh my khng lp t thit b iu chnh dng hoc p sut t ng. p sut ti u ra nh my c iu chnh bng van iu p (PV-1114A) lp t ti u ra ca nh my trong trng hp lng kh tiu th ln hn lng kh cung cp cho ngi tiu dng. Khi lng kh tiu th nh hn lng kh cung cp, mt lng kh s c em t qua van iu p (PV-1114B), v vy trong c hai trng hp trn p sut u ra ca nh my c duy tr n nh. Thng thng kh u vo nh my c p sut 109 BarA c a vo h thng Ejector, p sut u ra khi h thng Ejector vo khang 45BarA, bng p sut u ra ca nh my. Khi p sut kh u vo nh my thp hn 109 BarA, hoc kh cung cp t dn khoan t hn so vi cng sut ca nh my th h thng Ejector c th khng hot ng ht cng sut, v vy p sut ca thp tch ethane c th tr nn cao hn 20 BarA. Trong trng hp ny, mt trong ba ejector ca h thng Ejector c cng sut ph hp nht s c la chn, sau p sut u vo nh my t t tng ln v t n gn 109 BarA v ng thi p sut ca thp tch ethane cng c iu chnh 20 BarA.

Trn Quc Ti

24

Nh my x l kh Dinh C

Bo co thc tp

Nu trong s la chn trn, h thng Ejector vn khng th hot ng ht cng sut, th mt lng kh d c th t ng c em t qua van iu p (PV-1303B) c lp t trn ng ng dn kh i ra t thp tch ethane. Sau qu trnh x l trn, kh thng phm v condensate l 2 sn phm ca nh my.

II. CH MF MINIMUM FACILITY:Mt vi thit b c thm vo gm: Dehydration Adsorber (V-06A/B), Cold Gas/Gas Exchanger (E-14), Gas/Cold Liquid Exchanger (E-20), Deethanizer OVHD Compressor (K-01) v Stabilizer (C-02). ch MF, kh gas sau khi c kh nc s c lm lnh qua 2 thit b trao i nhit, c 2 dng ny u ng vai tr nhp liu cho thp Rectifier nhm tch lng lng c trong dng kh. Kh sau khi c tch lng li thp Rectifier c nhit thp c dng lm lnh cho dng nhp liu, sau c a vo h thng ng dn kh thng phm n nh my in, m. p sut hot ng ti thp Deethanizer c iu chnh bi mt my nn ngoi. Mc ch chnh ca ch MF l thu hi sn phm lng, trong qu trnh gin n khng ng vai tr chnh. Thp tch C3/C4 Splitter khng c s dng trong ch ny, do sn phm lng ch gm condensate v bupro (hn hp ca propane v butane).

Trn Quc Ti

25

Nh my x l kh Dinh C SC V-08 Kh ng hnh V-06A/B E-15 F-01 E-18 V-07 K-04

Bo co thc tpFV-1001 E-14C5 -0

E-20

ME-13

Kh thng phm

V-12

K-01

E-02

V-02

V-03 E-07 FV-1701 V-15

C1 -0

C2 -0

P-01A/B

E-01A/B

Nc

DuFV-1301

Du nngE-03

S co en P d sate

ME-24 TK-21

E-09

E-04

V-21A V-21B

Bupro BuproTrn Quc Ti

ME-26 ME-25

H

nh 3.2. S cng ngh ch MF Minimum Facility 26

Nh my x l kh Dinh C

Bo co thc tp

2.1. M t s dng: 2.1.1. Dng kh gas thng phm: Dng kh t Slug Catcher c a n thit b tch lc Dedydration Inlet Filter/Separator (V-08), thit b ny c chc nng: tch nc, hydrocacbon lng v cc ht rn nhm bo v lp cht hp ph trong V-06AB khi b hng, gim hot tnh. Sau khi c loi nc ti Dehydration Adsorber (V-06A/B), dng kh c a ng thi n 2 thit b Cold Gas/Gas Exchanger (E-14) v Gas/Cold Liquid Exchanger (E-20), sau vo thp Rectifier (C-05) tch pha lng v pha kh ring bit. Kh ra t nh thp Rectifier (C-05) c s dng nh tc nhn lm lnh bc 1 cho dng nguyn liu ti Cold Gas/Gas Exchanger (E-14), nhit dng nguyn liu gim t 26.5oC xung -17oC sau c lm lnh bc 2 ti van FV-1001 bng qu trnh gim p. Dng kh ra t nh Rectifier (C-05) sau khi trao i nhit ti Cold Gas/Gas Exchanger (E-14), nhit dng tng ln iu kin cung cp cho cc nh my in. Hai thp hp ph Dehydration Adsorber (V-06A/B) c s dng lun phin, khi thp ny lm vic th thp kia ti sinh. Qu trnh ti sinh c thc hin nh s cung cp nhit ca thit b E-18 s dng du nng gia nhit cho dng kh thng phm nng nhit ln 220oC. Dng kh sau qu trnh ti sinh sau khi ra khi thit b Dehydration Adsorber (V-06A/B) c lm mt ti h thng lm mt bng khng kh Dehydrator Regeneration Gas Cooler (E-15) v c tch lng Dehydration Separator (V-07) trc khi dn vo ng kh thng phm. 2.1.2. Dng condensate: S dng condensate trong ch MF v c bn ging vi ch AMF, thay v dng kh ra t thit b Slug Catcher Liquid Flash Drum (V-03) n thp Rectifier (C-05) th li n thp Deethanizer (C-01). p sut ca Slug Catcher Liquid Flash Drum (V-03) c gi 75 bar bi van iu khin PV-1305A/B gn trn ng ng dn trc khi vo mm 2 v 3 ca thp Deethanizer (C-01). Nhit ra ca van ny l -7.9oC thp hn nhit m ti tinh th hydrate hnh thnh khong 13.4oC. ngn chn s hnh thnh hydrate, methanol c th c bm vo lm cht c ch hoc c th thay i ng ng n van ph. Mc Trn Quc Ti 27

Nh my x l kh Dinh C

Bo co thc tp

ch ca vic thay i dng kh gas ca bnh tch V-03 t Rectifier trong ch AMF, n thp Deethanizer trong ch MF l v trong kh gas ny vn c cha nc, mc d dng kh ti sinh t qu kh nc trong ch MF cng c cha nc. Dng condensate t bnh tch V-03 s c a ti thp Deethanizer (C-01) sau khi c gia nhit t 20oC ln 90oC trong thit b trao i nhit Condensate Cross Exchanger (E-04A/B) vi dng nng c nhit 155oC n t y ca thp Stabilizer (C-02). Mc ch ca vic trao i nhit ny l nhm tn dng lng nhit, ngn chn s hnh thnh hydrate ti u ra ca van FV-1701, khi p sut t ngt gim t 75 bar xung 29 bar, nh vy nhit lc ny ca dng ra vo khong 61oC cao hn nhit hnh thnh hydrate. Phn lng ra t y thp Deethanizer (C-01) c a n thp Stabilizer (C-02). Trong ch MF, thp Stabilizer (C-02) c a vo vn hnh nhm thu hi hn hp bupro c trong dng condensate. Ti y, cc hydrocarbon t C5 tr ln c tch ra v i ra y thp, sau c dn qua thit b trao i nhit E-04A/B gia nhit cho dng nguyn liu vo thp Deethanizer (C-01). Sau khi ra khi E-04A/B dng lng ny c a n lm lnh ti thit b qut lm mt bng khng kh E-09 trc khi a ra ng ng hoc bn cha condensate thng phm TK-21. Dng hi ra khi nh thp Stabilizer (C-02) l hn hp bupro, c ngng t ti bnh V-02, mt phn c cho hi lu tr li thp, phn cn li theo ng ng dn sn phm LPG. 2.2.1. Cc thit b b sung thm vo so vi ch MF Trong ch hot ng ny, mt s thit b c b sung vo so vi ch AMF, cc thit b ch yu l thp hp th loi nc V-06A/B (Dehydration Adsorber), thit b trao i nhit kh lnh/kh E-14 (Cold Gas/Gas Exchanger), thit b trao i nhit kh/lng E-20 (Gas/Cold Liquid Exchanger), my nn kh nh thp tch enthane K-01 (Deethanizer OVHD Compressor) v thp n nh C-02 (Stabilizer). 2.2.2Qu trnh lm kh v ti sinh chp hp ph: Trong ch hot ng ny, u tin dng kh t Slug Catcher c chuyn n thp loi nc V-08 (Dehydration Intel Filter/Seperator), v sau c a vo mt trong hai thp hp ph loi nc hot ng song song V-06A/B tch nc c trong kh v cui cng kh c loi nc i qua h thng lc F-01A/B. Trn Quc Ti 28

Nh my x l kh Dinh C

Bo co thc tp

2.2.3 X l Condensate trong ch hot ng MF. Vic x l Condensate trong ch hot ng MF cng tng t nh trong ch hot ng AMF, c mt s khc nhau gia hai ch hot ng l trong ch hot ng MF dng kh t bnh tch 3 pha c chuyn n thp tch ethane, cn trong ch hot ng AMF th dng kh ny c chuyn n thp tch tinh. p sut ca bnh tch 3 pha c iu chnh 75 BarA bng van iu p (PV1305A/B) c lp t trn ng ng dn kh ca n v trc u vo thp tch ethane a th 2 hoc th 3, nhit u ra van iu p l -7.9C, thp hn nhit to thnh hydrate (13.4C), v vy hai van (PV-1305A/B) c lp t, trong mt van d phng. Trong trng hp hydrate c hnh thnh mt trong hai van th c th bm methanol vo hoc l s dng van d phng. Mc ch ca vic chuyn kh t bnh tch V-03 n thp C-01 l v kh ny c th c nc, v vy kh thu c trong ch hot ng MF cng cha nc nu chuyn kh n thp tch C-05. Khi a kh t V-03 ti C01 th kh t nh C-01 s c hi lu li u vo nh my v nc s c x l y. Condensate t bnh tch nhanh c chuyn n thp tch ethane sau khi c gia nhit t 20C ln 80C trong thit b trao i nhit E-04A/B vi dng nng 155C i t y thp n C-02. Mc ch chnh ca thit b trao i nhit dng l tn dng v thu hi nhit v gia nhit cho dng lnh trnh hin tng to hydrate u ra ca FV-1701, khi p sut hot ng gim t 75 BarA xung 29 BarA, nhit hot ng c th duy tr 61C (cao hn nhit to thnh hydrate 14C) trong iu kin ny. 2.2.4. Lm lnh kh v tch tinh trong ch hot ng MF. Khong mt na lng kh c tch nc c chuyn n thit b trao i nhit kh lnh/ kh ((E-14,Cold Gas/Gas Exchanger ) lm lnh t 26C xung -17oC bng dng kh lnh -18C i t y thp tch tinh (C-05, Rectifiel), nhit u ra l -17C ny l mt thng s quan trng trong qu trnh x l kh, nu n ln hn gi tr -17C th khng thu hi c cht lng, v nu thp hn gi tr -17C th hydrate c th c hnh thnh ti dng ra, v vy nhit ny phi c iu chnh bng dng lnh ca thit b trao i nhit kh lnh/kh (E-14, Cold Gas/Gas Exchanger) thng qua thit b Trn Quc Ti 29

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iu chnh nhit (TIC-1006, Temperature controller), thit b iu chnh nhit (TICA-1009, Temperature controller) lp t trn u ra ca ng ng dn dng lnh trnh hin tng nhit thp hn gi tr cho php (-10C) bng cch gii hn dng bypass bi thit b iu chnh TY-1006, Low Slector. p sut ca dng kh nguyn liu c gim t 109BarA xung 47.5BarA thng qua van iu p (FV-1001,control valve), ti van ny kh c gin n on nhit, nhit ca kh gim xung n -35C. Mt na lng kh cn li c lm lnh xung 19C trong thit b trao i nhit kh/ lng lnh (E-20, Gas/Cold Liquid Exchanger) bng dng Condensate lnh -26.8C i t y thp tch tinh (C-05, Rectifier), v p sut ca n cng c gim t 109BarA xung 47.5BarA thng qua van FV-0501C. Sau hai dng ny c ha trn vi nhau v c a vo a th nht ca thp tch tinh (C-05, Rectifier). Trong thp tch tinh (C-05, Rectifier) mt lng kh cha ch yu methane, ethane c tch ra khi Codensate nhit hot ng l -18.5C v p sut l 47.5BarA, nhit v p sut lm vic c iu chnh bng van (PIC-1114) c lp t trn ng ng dn kh thng phm. Phn trn ca thp tch tinh (C-05, Rectifier) c tc dng nh mt bnh tch lng-kh. Dng kh t thp tch tinh (C-05, Rectifier) c nhit -18.5C c dng lm lnh dng kh nguyn liu i vo trong thit b trao i nhit kh lnh/kh (E-14, Cold Gas/Gas Exchanger). Trong ch hot ng MF, h thng tuabin gin/nn (CC01,turbo-Exchangerr/Compressor) khng hot ng, v vy n c b qua v kh c chuyn n ng ng dn kh thng phm sau khi c do dng bng thit b o (FI1105A/B). Van iu p (PV-1114A, Control valve) c lp t trn ng ng iu chnh p sut u ra ca nh my l khong 47BarA. Cht lng t y thp tch tinh (C-05, Rectifier) thng qua thit b iu chnh dng FIC-1201 cng vi thit b iu chnh mc LIC-1201A c a vo thit b trao di nhit kh/lng (E-20,, Gas/Cold Liquid Exchanger), c nhit khong -26.8C c dng lm lnh dng kh u vo v p sut ca kh u vo cng c gim xung 47.5BarA qua van FV-0501C sau dng ny c chuyn n a trn cng ca thp tch ethane (C-01, Deethanizer). Trn Quc Ti 30

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2.2.5 Thp tch ethane trong ch d hot ng MF. Trong ch hot ng MF, thp tch ethane (C-01, Deethanizer) c ba dng u vo, dng th nht l dng kh t bnh tch V-03 c a vo a th 2 hoc th 3, dng th hai l dng lng cng t bnh tch V-03 c a vo a th 20 (nu trong ch hot ng AMF th a vo a th 14), dng th 3 l dng lng t y thp tch tinh (C-05, Rectifier) sau khi i qua thit b trao i nhit kh/lng (E-20, Gas/Cold Liquid Exchanger) c a vo a trn cng thp tch ethane (C-01, Deethanizer) dng ny bao gm 75% mol l lng v ng vai tr dng hi lu ngai cho qu trnh chng ct. Trong thp tch ethane, cc hydrocacbon nh nh methane, ethane c tch ra khi dng lng v i ln nh thp. Nhit y thp C-01 c gi 1200C thng qua cc reboiler E-01A/B. Hydrocacbon nh tch ra c nn t 29BarA ln 47BarA bng my nn (K-01, Deethanizer OVHD Compressor) v c trn vi kh thng phm. K01, Deethanizer OVHD Compressor l my nn kiu pittong n cp c dn ng ng c kh 766KW, c thit b tch lng u vo (V-12) l bnh tch thng ng c ng knh 1.200 mm v cao 3.000mm c lp t trc my nn loi b tt c cc git cht lng cn li trong dng kh. Cht lng y ca bnh tch u vo c h thng x kn thng qua thit b iu chnh mc LICA-1401 Cht lng t y thp tch ethane c chuyn n thp n nh (C-02, Stabilier) thu hi Bupro (sn phm nh) v Condensate ( sn phm y). p sut hot ng ca thp tch ethane c iu chnh 29BarA bi b iu p PICA-1305. Trong trng hp my nn kh K-01 khng lm vic th dng kh t thp tch ethane s c a ra flare t ng thng qua van PV-1303 duy tr p sut vn hnh ca thp. 2.2.6 iu chnh p sut dng kh trong ch hat ng MF. Trong ch hot ng MF, ch iu chnh t ng lu lng v p sut ca dng kh vo nh my c ci t. Cc b iu chnh p sut v iu chnh dng PICA0502A v FIC-0501 c lp t trn ng ng dn kh sau thp hp ph V-06A/B, v tn hiu iu chnh t hai thit b ny c la chn bng thit b PY-0502 v sau c chuyn n van iu khin FV-0501C.

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Nu dng kh cung cp t ngai khi khng , p sut u vo gim xung di 109BarA, th PICA-0502A ng FV-0501C duy tr p sut u vo 109BarA.. Nu p sut vt qu 109BarA, PICA-0502B s m PV-0502 gii phng kh d ra uc t, v nh vy cc thit b c bo v khi s qu p. Trong trng hp ny p sut u vo khng th iu chnh chnh xc do th tch ca h thng ng ng di y bin qu ln v gi tr ca thit b iu chnh c th b sai lch. Lu lng dng kh qua thit b trao i nhit kh lnh/kh (E-14) c iu chnh 45% tng dng kh qua nh my. Trong trng vic tiu th kh ca cc h tiu th ln hn lng kh cung cp, p sut ti u ra nh my c iu chnh 47BarA bng van iu p PV-1114A, c lp t ti u ra ca nh my. Nu s tiu th thp hn s cung cp, lng kh d s c em t thng qua van PV-1114B v vy trong c hai trng hp p sut u ra ca nh my u c duy tr.

III. CH GPP GAS PROCESSING PLANT:3.1. Qu trnh tch nc: ch GPP, kh gas t Slug Catcher (SC-01/02) trc tin c a vo thit b tch Dehydration Inlet Filter/Separator (V-08), dng kh ra khi V-08 c a vo mt trong hai thit b hp ph hot ng song song (V-06A/B) tch nc c trong kh. Sau , qua h thng li lc Dehydration After Filter (F-01A/B) loi b cc bi bn, tp cht c hc b cun theo ri a vo h thng x l kh .

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K gh h h on an

V-08 V-06A/B

Nh my x l kh Dinh C SC-01

E-14

FV-1001 Bo co thc tp 5 C -0

E-15 F-01 V-07 E-13 K-03 E-18 K-04 CC-01 ME-13

Kh thng phm

V-14

K-02E-19

V-13

E-08E7 -0

K-01

FV-1201 V-12

E-02

V-02

E-11

V-05

FV-1802

C4 -0

FV-1701

C1 -0

FV-1301

C2 -0

NcSP codensate TK-21 SP Butan SP Propan V-21B V-21A ME-25 ME-24 ME-26 E-09 E-04 E-01 V-15 E-12

P-01 E-03 E-17

C3 -0

P-03 E-10

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Hnh 3.3. S cng ngh ch GPP Gas Processing Plant

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3.2. Cc thit b chnh: y l ch hon thin ca nh my ch bin kh. Ch ny bao gm cc thit b ca ch MF v c b sung mt s thit b sau : Mt thp tch C3/C4: C-03; Mt thp Stripper: C-04; Hai my nn K-02, K-03; Thit b Turbo-Expander: CC-01; Cc thit b trao i nhit: E-17, E-11, . . . S cng ngh ch GPP c nu ra hnh v nh km. Trong ng m biu din dng lu cht (lng, kh) trong ch GPP. S cng ngh ch GPP c th c m t nh sau: Kh ngoi gin vo nh my c tip nhn u tin ti Slug Catcher (SC-01/02), dng lng ra c nhit 25,6C v p sut 109 bar c a ti V-03. Dng kh ra t Slug Catcher qua V-08 tch nt phn lng cn li, lng lng c tch ra ny c a n bnh tch V-03 x l, cn dng kh ra t V-08 i vo V-06A/B tch tinh nc. Trong ch ny, thit b Turbo-Expander c a vo hot ng thay th E-20 trong ch MF, nn khong 2/3 lng kh ra khi V-06A/B c chuyn ti phn gin n ca thit b CC-01, ti kh c gin t 109 bar xung 33,5 bar v nhit cng gim xung -18C, sau dng ny c a vo thp tinh lc C-05. Phn cn li khong 1/3 dng t V-06A/B c a ti thit b trao i nhit E-14 lm lnh dng kh t 26C xung - 35C nh dng kh lnh ra t nh thp C-05 c nhit - 42,5C. Sau , dng ny li qua van gim p FV-1001 (p sut c gim t 109 bar xung 47,5 bar, nhit cng gim xung cn -62C) ri c a vo thp C05 nh mt dng hi lu ngoi nh thp. Trong ch GPP, thp C-05 lm vic p sut 33,5 bar, nhit nh - 42C v nhit y -20C. Kh ra khi nh thp C-05 c nhit -42,5C c s dng lm lnh kh u vo thng qua thit b trao i nhit E14 trc khi nn ra dng kh thng phm bng phn nn ca CC-01. Qu trnh thu hi lng trong ch ny c khc bit so vi ch AMF v ch MF do s c mt ca thp C-04 v cc my nn K-02, K-03. Dng kh ra t nh thp C01 c my nn K-01 nn t 29 bar ln 47 bar ri tip tc c lm lnh trong thit b trao i nhit E-08 (tc nhn lnh l dng lng ra t V-03 c nhit l 20C) v vo Trn Quc Ti 35

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thp C-04 tch nc v hydrocacbon nh ln trong lng n t V-03. Thp C-04 lm vic p sut 47,5bar, nhit nh v y ln lt l 44C v 40C. Kh sau khi ra khi thit b C-04 c nn tip ti p sut 75 bar nh my nn K-02 ri c lm lnh ti thit b trao i nhit bng khng kh E-19. Dng ny c trn ln vi dng kh ra t V-03, v c nn tip ti 109 bar bng my nn K-03, sau li c lm lnh v nhp vo dng kh nguyn liu trc khi vo V-08. Dng lng ra t thp C-04 c a n a th 14 ca thp C-01 dng lng ra t thp C-05 c a n a th nht ca thp C-01 ng vai tr nh dng hi lu ngoi nh thp. Trong ch ny, thp C-01 lm vic p sut 29 bar, nhit nh 14C v nhit y 109C. Sn phm y ca thp C-01 ch yu l C+3 c a n thp C-02 (p sut lm vic ca C-02 l 11 bar, nhit nh 55C v nhit y 134oC) tch ring condensate v Bupro. Dng ra t nh thp C-02 l hn hp Bupro c tin hnh ngng t hon ton nhit 43C qua h thng qut lm mt bng khng kh E-02, sau c a ti bnh hi lu V-02 c dng nm ngang. Mt phn Bupro c bm tr li thp C-02 hi lu bng bm P-01A/B, p sut ca bm c th b p c s chnh p sut lm vic ca thp C-02 (11bar) v thp C-03 (16 bar). Phn Bupro cn li c gia nhit n 60C trong thit b gia nhit E-17 trc khi cp cho thp C-03 bng cht lng nng t y thp C-03. Sn phm y ca thp C-03 chnh l Condensate thng phm c a ra bn cha hoc dn ra ng ng vn chuyn Condensate v kho cng Th Vi. Sn phm ra t nh thp C-03 l hi Propan c ngng t hon ton nhit 46oC trong thit b E-11 c lp ti nh C-03 c dng lm mt bng khng kh v c a ti thit b cha hi lu V-05 c dng nm ngang. Sn phm Propane lng ny c bm ra khi V-05 bm bng cc my bm, mt phn Propane thng phm c tch ra bng thit b iu khin mc v chng c a ti ng ng dn Propane hoc b cha Propane V-21A. Phn cn li c a tr li thp C-03 nh mt dng hi lu ngoi nh thp. Ti y thp C-03, thit b trao i nhit E-10 c lp t cp nhit un si li bng du nng ti nhit 97C. Nhit ca n c iu khin bi van TV-2123 t trn ng dn du nng. Butan cn li a ra bn cha hoc a n kho cng Th Vi Trn Quc Ti 36

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sau khi c gim nhit n 60C bng thit b trao i nhit E-17 v n 45oC nh thit b trao i nhit E-12. 3.3 Loi nc v s ti sinh (Dehydration and regeneration) Trong ch hot ng ny, dng kh t Slug Catcher c chuyn n bnh tch bnh tch V-08, v sau c a vo mt trong hai thp hp ph song song (V-06A/B) loi b nc cha trong kh. Sau cho qua h thng li lc F-01A/B loi b cc bi bn, tp cht c hc b cun theo v a vo h thng x l kh tng t nh trong ch MF. 3.4 Qu trnh x l Condensate trong ch hot ng GPP. Qu trnh x l dng Condensate trong ch hot ng GPP khc so vi ch hot ng MF v AMF bi v trong ch hot ng GPP c thm hai thit b l Stripper v my nn kh K-02/03. Dng lng v kh t bnh tch 3 pha c chuyn ln lt n hai thit b ny. p sut ca bnh tch V-03 c iu chnh 75BarA bng van PV2002 lp t trn ng hi lu ca my nn hi lu cp 2 K-03. Condensate t bnh tch V-03 thng qua thit b iu chnh dng FV-1802 c lin kt vi thit b iu chnh mc LIC-0302 (cascaded control) i vo a trn cng ca thp C-04 (Gas stripper) sau khi c gia nhit t 20oC ln 41C trong thit b gia nhit kh/Condensate (E-08A/B, Gas/ Condensate Exchanger) bi dng kh nng 54C t my nn kh K-01, Deethanizer OVHD Compressor. Dng kh t thit b trao i nhit c chuyn n y thp C-04, Gas stripper. Mc ch chnh ca thit b trao i nhit l thu hi nhit, chng li s to thnh hydrate u ra ca van FV-1802 (ni m p sut hot ng gim t 75BarA xung 47.4BarA). Mc ch ca thp lm sch kh l loi nc khi condensate bng dng kh nng (kh kh). Thp lm sch gm 6 a van, Condensate tip xc trc tip vi dng kh nng i ln trong thp, v vy nc trong Condensate s c cun theo dng kh. Thp C-04 hot ng p sut hot ng l 47.5BarA c iu chnh bi thit b iu chnh PICA-1801, PICA-1801 c lp t x kh ra uc t trnh hin tng qu p. Dng lng t y ca thp C-04 thng qua van iu chnh dng FV-1701 (kt hp vi thit b iu chnh mc LICA-1821, cascaded control) a vo a th 14 hoc 20 Trn Quc Ti 37

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ca thp tch ethane sau khi c gia nhit t 40C ln 86C trong thit b trao i nhit E-04, Condensate Cross Exchanger bi dng nng 154oC i ra t y thp n nh C-02, Stabilizer. Mc ch ca thit b trao i nhit l tn dng v thu hi nhit. 3.5 Qu trnh tch tinh v lm lnh su trong ch GPP. Mt phn ba lng kh c lm kh c chuyn n thit b trao i nhit E14, Cold Gas/ Gas Exchanger lm lnh su t 26C xung -35C bng dng kh lnh t nh thp tch tinh C-05, Rectifier c nhit -42.5C. Nhit ca dng kh ra khi thit b trao i nhit ny l -36C , y l mt thng s quan trng trong qu trnh x l kh, nu nhit ny thp hn gi tr , th mt lng hydrocacbon lng c th khng c thu hi, v nu nhit ny cao hn gi tri c bit , th hydrate c th hnh thnh trong ng ng, v vy nhit ny c iu chnh bi dng lnh qua E-14 thng qua b iu chnh nhit TICA-1009. B iu chnh nhit TICA-1009 c lp t trn ng ng u ra ca dng lnh nhm trnh hin tng nhit thp hn gi tr nhit thit k ng ng (-100C) bng cch gii hn dng kh lnh chy vng (bypass) qua E-14. p sut ca dng kh u vo sau c gim t 109BarA xung 33.5BarA thng qua van FV-1001 nh qu trnh gin n on nhit v nhit ca n gim xung -62C. Dng lnh ny gm 56% (t l mole phn) l lng , c a vo a trn cng ca thp tch tinh C-05 nh l dng hi lu ngai cho thp. Hai phn ba lng kh cn li c a vo h thng gin n kh CC-01, Turbo Expander, ti h thng ny kh c gin t 109BarA xung 33.5BarA v nhit h xung -180C. Van FV-0501B c lp t trn ng bypass qua CC-01 nhm trch qu p cho h thng. Nu b phn gin n ca CC-01 ngng lm vic (SDV-1101 u vo phn gin n ng li trong vng 0.5 giy), van bypass FV-0501B s t ng m, do vy c th trnh c hin tng di p t ngt. Dng lnh ny sau c a vo y thp tch tinh C-05. Trong thp tch tinh C-05, kh cha ch yu methane, ethane c tch ra khi dng lng cha cc cu t nng hn nh propane, butane v cc cu t nng khc di p sut hot ng 33.5BarA, nhit nh thp l -430C v nhit y thp l -200C. Phn trn ca thp tch tinh nh l bnh tch kh/lng. Cn nhn mnh thm rng trong cc ch hat ng AMF v MF, thp tch tinh c tc dng nh l mt bnh tch, Trn Quc Ti 38

Nh my x l kh Dinh C

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nhng trong ch hat ng GPP n c tc dng nh l mt thp chng ct phn on c dng hi lu ngai v khng c thit b gia nhit bn ngoi (reboiler). Thp C-05 c 12 van dng a. p sut hot ng ca thp tch tinh trong ch hot ng GPP l 33.5BarA thp hn so vi trong ch hot ng MF v AMF (47.5BarA). p sut ny khng c duy tr bi cc thit b iu chnh p sut m ph thuc vo hiu sut lm vic ca Turbo-Expander/Compressor. Dng kh t nh thp tch tinh c nhit -430C c dng lm lnh su dng kh nguyn liu i vo thit b trao i nhit E-14, v sau c nn bi phn nn ca CC-01. Mt van anti-surge FV-1111 c lp t phn nn ca CC-01. Trc khi khi ng my nn, dng kh thng phm i theo ng ng bypass (qua van FV1111), sau t ng thay i ti my nn khi my nn khi ng, nh van mt chiu lp t trn ng ng (check valve). Khi my nn ngng hot ng, dng kh tr li di chuyn theo ng ng bypass. Khi dng kh vo my nn khng , van anti-surge FV1111 s m ra gi cho my nn lm vic ngoi vng surge. Dng kh sau c chuyn n ng ng dn kh thng phm qua b o dng ME-13. ME-13 bao gm 02 b o dng FI-1150A/B, mt lm vic, mt d phng. Van iu p PV-1114A c lp t trn ng ng iu chnh p sut ti u ra ca nh my l 47 BarA. Dng lng t y thp tch tinh thng qua thit b iu chnh dng FIC1201 cascaded vi thit b iu chnh mc cht lng trong thp tch tinh LIC-1201A c a vo a trn cng ca thp C-01 nh l dng hi lu ngoi. 3.5.1 Thp tch C-01 trong ch hat ng GPP. Trong ch hot ng GPP, thp tch ethane C-01(Deethanizer) c hai dng u vo, mt dng lng t thp C-04, sau khi c gia nhit t 40oC n 86oC trong thit b trao i nhit (E-08, Condensate Cross Exchanger) c a vo a th 20 ca thp C-01. Dng cn li l dng lng t y thp tch tinh c nhit -23C c a vo a trn cng ca thp, dng ny gm 95% (theo t l mole phn) l cht lng lm dng hi lu ngai cho qu trnh chng ct. Trn Quc Ti 39

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Trong thp tch C-01, cc hydrocacbon nh nh methane, ethane c tch ra khi pha lng nh thit b gia nhit cho y thp E-01A/B. Nhit y thp c duy tr 109C. Hydrocacbon dng kh i ra t nh thp c nn bng 1 trong 2 my nn K-01 A/B, Deethanizer OVHD Compressor t 29BarA ln 47BarA. K-01 A/B, Deethanizer OVHD Compressor l my nn kiu pittong n cp c dn ng bi ng c kh 766kW trong 1 my lm vic v 1 my d phng. Bnh tch u vo V12 l dng bnh thng ng c ng knh 1.200mm, cao 3.000mm c lp t trc my nn loi b tt c cc git cn li trong dng kh. Cht lng y ca thit b tch lc c x vo h thng x kn thng qua thit b iu chnh mc LICA-1401. Dng kh sau c lm mt trong thit b trao i nhit E-08, Gas/Condensate Exchanger nh vo dng lnh c nhit l 200C i ra t bnh tch ba pha V-03, Slug Catcher Liquid Flash Drum. Dng kh ny c tip tc nn ti 75BarA bng my nn K-02, Expanded Deethanizer OVHD Compressor v c lm mt ti qut lm mt bng khng kh E-19, sau i vo u ht ca my nn K-03. Dng kh t bnh tch ba pha V-03 c trn ln vi dng kh i ra t E-09 v i vo u ht ca my nn K-03, 2nd Stage OVHD Compressor, sau c a a tr li nhp vo ng kh nguyn liu u vo chuyn n thp loi nc loi nc v a vo ch bin tr li nhm tng hiu qu thu hi lng cho nh my. Cc my nn K-02 v K-03 l loi my nn kiu pittong hai cp c dn ng bi ng c kh 1200kw. Cc bnh tch u vo V-13 v V-14 l dng bnh thng ng c ng knh ln lt l 1.100mm v 1.000mm v c chiu cao l 3.000mm c lp t u vo ca mi my nn loi b cc ht cht lng c trong dng kh i vo my nn. Dng lng y cc thit b tch lng thng qua b iu chnh mc chnh mc LICA-1901 v 2001 c a vo a trn cng ca thp tch C-01 v thp C-04. p sut u ht K-01 bng p sut hot ng ca thp tch ethane, c iu chnh 29BarA bi b iu chnh p sut PICA-1303A, trong trng hp K-01 ngng hot ng, dng kh t thp tch ethane s t ng x ra uc t thng qua van PV1303B nhm duy tr p sut hot ng ca thp.

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p sut u ht ca K-02 c iu chnh 47BarA bi b iu p PICA-1801A v gi n nh 47 BarA. p sut u ht K-03, c iu chnh 75BarA bi b iu p PIC-2002A. My nn K-02/03 c cng tc quay do s dng chung ng c. Lng t y thp tch ethane thng qua van FV-1301 (hot ng ch autocascaded nh vo b iu chnh mc LIC-1302 i vo thp n nh C-02, Stabilizer. 3.5.2 iu chnh nhit v t l dng trong ch GPP. Trong ch hot ng GPP, lu lng dng v p sut u vo ca nh my c iu chnh t ng. Thit b iu chnh p sut v dng PICA-0502A & FIC-0501 c lp t trn ng ng dn kh sau h thng thp hp ph V-06A/B v tn hiu iu khin t hai thit b iu chnh ny nh vo b la chn low selector PY-0502 v sau chuyn n iu chnh ng m van u vo phn gin n ca CC-01 (iu chnh tc quay ca CC-01). Trong trng hp CC-01 dng van FV-0501B s t ng m trnh qu p cho h thng. Khi lng kh cung cp t ngai khi khng , p sut kh u vo nh my gim xung di 109Bar, PICA-0502A gim tc ca CC-01 gi cho p sut kh u vo ca nh my 109BarA. Khi lng kh cung cp t ngoi khi tng v my nn khng th gim p sut mc d chy vi tc max, PICA-0502A c th m van Expander bypass FV-0501B. Nu dng kh vi lu lng ln hn cng sut nh my, FIC-0501 gi cho tc dng kh gi tr bng cng sut ca nh my. Nu p sut vt qu 109BarA, PICA-0502B s kch hot m van PV-0502 gii phng lng kh d a ra uc t, do vy thit b c bo v khi tnh trng qu p. T l dng kh nguyn liu u vo qua thit b trao i nhit kh lnh/kh (E14,Cold Gas/Gas Exchanger) c iu chnh 34% tng lng kh qua FIC-0501 bi FFIC-1001 v FV-1001. Trong trng hp nhu cu tiu th ca cc h tiu th ln hn lng kh cung cp, p sut u ra nh my c iu chnh 47BarA bi van iu p PV-1114A, Pressure Trn Quc Ti 41

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Control valve c lp t u ra ca nh my, trc ng ng dn kh. Khi nhu cu tiu th ca cc h tiu th thp hn lng kh cung cp, mt lng kh d s c t thng qua van PV-1114B , do vy trong ca hai trng hp trn p sut u ra ca nh my c iu chnh. Trong ch GPP sa i, do trm nn u vo lun duy tr p sut dng kh vo x l l 109 barG nn b iu khin t ng PY-0502 khng cn iu chnh theo p sut. Do b iu khin PIC-0502A c t manual vi output 100% v lc ny PY0502 s ch nhn gi tr iu khin t FIC-0501 qua HS-0501 ng m Inlet guide valve ca CC-01 iu khin lu lng qua CC-01. Phn lu lng kh cn li s c iu chnh qua E-14 bng cch ng m van FV-1001 nhm m bo tnh ch ng v n nh cho h thng.

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V-101 E1015A/B/ K- C/D 1011A/B/ C/D K-01 V-12 C-05 C-01 E01A/ B V-08 SDV-101 V-06A/B V-15 CC-01 ME SC-01/02TK-21

K-02 K-03 E-02 V-02 P-01A/B C-02 E-03 E-17 E-11 V-05Pp ro an

E-14

P-03A/B C-03 V-21A E-10 V-21B E-12

K hiu C: Thp tch phn on V: Thit b tch SC: Slug catcher CC: Turbo Expader K: My nn P: Bm ME: Thit b o m

Kh thng phm

Kh ng hnh

Buta n

E: Thit b trao i nhit

E-07

V-03

E-09 E-04

SP Condensate

Hnh 3.4. S cng ngh ch GPP chuyn i Modified Gas Processing Plant

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IV. CH MGPP GAS PROCESSING PLANT MODIFIED: gii quyt nhng pht sinh ca vic tng cng sut Nh my khi phi tip nhn thm lng kh ng hnh t m Rng ng sao cho em li hiu qu kinh t cao nht: Vic tng lu lng kh ng hnh dn vo b gy nn s st gim p sut ng k trn ng ng lm cho p sut ti u vo Nh my x l kh khng th m bo gi tr p sut thit k l 109 bar. Phng n lp t trm nn kh u vo Nh my x l kh Dinh C nn tng p sut kh nguyn liu vo Nh my ln 109 bar theo ng thit k ban u s m bo vic tng sn lng sn phm ca nh my khi tng lu lng nguyn liu vo nh my cng nh p sut ca dng kh cung cp cho Nh my in Ph M 1. Trm nn kh u vo c lp t gm 4 my nn kh : 3 my hot ng v 1 my d phng. Ngoi ra, mt s thit b ca nh my x l kh Dinh C cng c ci hon kt ni m rng vi trm nn kh. Cc thit b trong ch ny gm ton b cc thit b ca ch GPP v thm trm nn kh u vo K-1011A/B/C/D v bnh tch V-101. Kh ng hnh t m Bch H vi lu lng khong 5,7-6,1 triu m3 kh/ngy vo h thng Slug Catcher trong iu kin p sut 65 bar- 80 bar nhit 20C n 30C (tu theo nhit mi trng). Dng kh ra t SC c chia thnh hai dng: - Dng th nht c lu lng khong 1 triu m3/ngy c a qua van gim p PV-106 gim p sut t 65 bar-80 bar xung 54 bar v i vo thit b tch lng V-101. Lng c tch ra ti y bnh V-101 c a vo thit b V-03 ch bin su. Kh i ra t bnh tch V-101 c a vo h thng ng ng dn kh thng phm 16 inch cung cp cho cc nh my in. - Dng th hai c lu lng khong 5 triu m3 kh/ngy c a vo trm nn kh u vo K-1011 A/B/C/D (3 my hot ng 1 my d phng) nn nng p sut t 65 bar- 80 bar ln 109 bar sau qua h thng qut lm mt bng khng kh E-1011 lm ngui dng kh ra khi my nn n nhit khong 40-45C. Dng kh ny i vo thit b tch lc V-08 tch lng lng cn li trong kh v lc bi bn. Sau c a vo thit b hp th V-06A/B tch trit nc trnh hin tng to thnh hydrate qu trnh lm lnh su.

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Dng kh ra khi thit b V-06A/B c tch thnh hai dng: Khong mt phn ba dng kh ban u qua thit b trao i nhit E-14 h nhit t 26,5C xung -35C vi tc nhn lnh l dng kh kh n t nh thp C-05 c nhit l - 45C, sau c lm lnh su bng cch gim p qua van FV-1001. p sut gim t 109 bar xung 37 bar (bng p sut lm vic ca nh thp C-05) ko theo nhit gim xung -62C ri c a vo a trn cng ca thp tinh ct C-05, ng vai tr nh dng hi lu ngoi nh thp. Hai phn ba dng kh cn li c a vo thit b CC-01 thc hin vic gim p t 109 bar xung 37 bar v nhit gim xung -12C v c a vo y ca thp tinh ct C-05. Thp tinh ct C-05 hot ng p sut 37 bar, nhit nh thp v y thp tng ng l -45C v -15C, ti y kh (ch yu l metan v etan) c tch ra ti nh thp C-05. Thnh phn lng ch yu l Propan v cc cu t nng hn c tch ta ti y thp.Dng kh ra t nh ca thp tinh ct c nhit -45C c s dng lm tc nhn lnh cho thit b trao i nhit E-14 v sau c nn ti p sut 54 bar trong phn nn ca thit b CC-01. Hn hp kh i ra t thit b ny l kh thng phm c a vo h thng ng ng 16 inch n cc nh my in. Dng lng ra t y thp tinh ct c a vo thp C-01 nh dng hi lu ngoi nh thp. Trong thp C-01, vi nhit y thp l 109oC (nh thit b gia nhit E-01A/B), p sut hot ng ca thp l 27,5 bar, cc hydrocacbon nh nh metan, etan c tch ra i ln nh thp vo bnh tch V-12 tch lng c trong kh v c my nn K-01 nn t p sut 27,5 bar ln p sut 47,5 bar. Dng ra khi my nn K-01 c a vo E-08 sau vo thp C-04. Do bnh tch V-03 phi gim p sut vn hnh t 75 bar theo thit k xung cn 45 bar (v cc l do trnh by mc trn) nn lng lng t y bnh tch V-03 c a trc tip qua E-04A/B m khng i vo thit b trao i nhit E-08 nh thit k. V vy E-08 v C-04 lc ny khng hot ng nh cc thit b cng ngh m ch hot ng nh cc ng ng dn kh. Dng kh t K-01 sau c nn n 75 bar nh my nn K-02 ri li tip tc a vo thit b trao i nhit E-19 bng vic s dng dng tc nhn lnh l khng kh. Dng kh ra t E-19 c a vo my nn K-03 nn ti p sut 109 bar v lm lnh trong thit b trao i nhit E-13, ra khi E-13 dng kh ny c a ti thit b V-08

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nh l nguyn liu u vo. Thp tch etan C-01 l thit b tch dng thp loi a van, hot ng nh mt thit b chng ct. Dng lng i ra t y ca thp C-01 c a qua V-15 sau ti thp C-02. Thp C-02 l thit b c cu trc dng thp, c p sut hot ng l 10 bar, nhit y thp c duy tr 135oC nh thit b gia nhit E-03, nhit nh thp 56oC, hn hp Bupro c tch ra nh thp , cn Condensate c tch ra y thp. Hn hp Bupro t nh thp C-02 tip tc c a vo thit b lm lnh E-02, sau c a vo bnh tch V-02. Dng lng ra t bnh tch V-02 c bm P-01A/B bm hi lu 1 phn li nh thp v phn cn li theo ng ng dn sn phm Bupro n bn cha V21 A/B hoc n kho cng Th Vi. Trong trng hp cn tch ring thnh sn phm Propan v Butan theo yu cu ca khch hng th sn phm lng t bnh V-02 s c bm P-01A/B bm qua thit b trao i nhit E-17 ( tn dng nhit) v vo thp C-03. Thp C-03 c nhit y l 95C, p sut hot ng ca thp l 16 bar. Propan c tch ra nh thp, nh qut E11 lm lnh v c a vo bnh tch V-05 sau c bm P-03 A/B cho hi lu mt phn tr li nh thp v phn cn li theo ng ng dn Propane thng phm. Butan c tch ra y thp qua thit b lm lnh E-12 v theo ng ng dn butan thng phm. Lng ra t y thp C-02 l Condensate c h nhit xung 60C nh thit b trao i nhit E-04 A/B v xung 45C nh thit b E-09 v sau c a ti bn cha TK-21 hoc ng ng dn Condensate ti kho cng Th Vi. Condensate (sau khi tch nc ti Slug Catcher) c tch ra trong Slug Catcher c a vo thit b V-03 hot ng p sut 47 bar v nhit 20C tch cc cu t kh nh b hp th trong hn hp lng ny bng cch gin n v gim p. T thit b V-03, Condensate c dn ti thit b trao i nhit E-04 ( tn dng nhit ca dng Condensate ra t y C-02) sau i vo a th 20 ca thp.

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V. QU TRNH KH NC:5.1. Qu trnh kh nc: Thp hp ph V-06 A/B c chc nng hp ph hi nc bo ho tn ti trong kh HC ngn nga qu trnh to hydrat. Hai thp hp ph c chc nng, thit k nh nhau, mt vn hnh v mt ti sinh hoc standby. Trong ch hat ng MF v GPP ( v ch AMF sau khi ch hot ng GPP hon thnh) kh t slug Catcher u tin c chuyn n bnh tch (V-08, Dehydration Intel Filter/Separator) bnh tch ny c thit k nhm tch loi 99% cc hydrocacbon lng, nc t do, du bi trn, v cc cht rn (solid particles) c trong dng kh bo v cho lp sng phn t cht hp th, bi v cc tp cht ny c nguy c lm bn cht hp th, lm gim hiu sut v tui th ca cht hp th. Thit b bo chnh p PDIA 0401, Diferential pressure Alarm c lp t kim sot chnh p qua V-08. Nu chnh p ln hn 0.5Bar s kch hot tn hiu cnh bo alarm. Kh i vo thp hp ph qua 3 lp: Lp trn cng l nhm hot tnh loi b nc, lp th 2 l mng phn t loi b hon ton nc t nhit im sng ca nc trong kh HC l -75C ti 34.5 bar; lp cui cng l m caremic. Kh sau khi qua thp hp ph c a qua thit b lc F-01A/B loi b bi bn cht hp ph. Cht hp ph s bo ho hi nc sau thi gian lm vic 8 gi. Kh a vo thp hp ph kh nc thng qua thit b phn phi kh, dng kh i qua cc lp cht hp ph trong thp, lp cht hp ph u tin l oxit nhm hot tnh loi mt phn ln nc, lp cht hp ph th hai l ry phn t (Zeolit) loi nc trit t im sng ca kh nh yu cu (-750C 34.5 Bar A). Oxit nhm c dng tch th ban u v v: gi thnh thp, c kh nng ht nc cao hn, kh b lm bn v ry phn t ca Oxit nhm c bo v tt, d ti sinh. Kh kh i ra khi thp hp ph thng qua thit b thu hi c lp t bn trong v sau i qua thit b F-01A/B Dehydration After Filter, trong mt thit b hot ng, thit b cn li ch d phng, loi b cc bi ca cht hp ph , n bo chnh p (DPA-0503A/B, Diferential pressure Alarm) c lp t trn F01A/B s kch hot kh chnh p ln hn 0.1Bar. Trn Quc Ti 47

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5.2. Qu trnh ti sinh cht hp ph Cc cht hp ph s bo ha nc sau 8 gi hot ng trong iu kin nc bo ha u vo (29C v 109BarA) do cn phi c ti sinh. 5.2.1. Chuyn thp hp ph Thp hp ph sau khi ti sinh standby hoc c a vo vn hnh song song vi thp ang hp ph. Trong thi gian ngn hai thp hp ph c vn hnh song song vi mc ch: gim thiu s thay i thnh phn kh, trnh dng kh b gin on. Sau thp hp ph cn ti sinh s c c lp. 5.2.2. Gim p Thp hp ph sau khi c c lp s gim p t 109 bar xung p sut kh ti sinh (35 bar ch GPP, 38 bar ch MF). Lu lng gim p c gii hn bi l khng ch lu lng (Restriction Orifice) t c thi gian gim p trn 30 pht. Trong qu trnh gim p s c s gim nhit v s ngng t ca kh t nhin. 5.2.3. Gia nhit Nc c loi b t cht hp ph bng cch s dng dng kh ti sinh trch t u vo phn nn ca CC-01 . Dng kh ti sinh ( 12500kg/h, 47 bar ch MF; 11500 kg/h, 34 bar ch GPP ) c hi lu tun hon bng mt trong hai my nn kh ti sinh K-04 A/B, v c gia nhit bng thit b trao i nhit E-18 n nhit 2300C. Dng kh ti sinh i ngc chiu vi thp hp ph. Qu trnh ti sinh c kim sot bng 3 ch bo nhit c lp t trn thp ( TI-0551A/B, 0552A/B, 0553A/B ) v nhit ra ca kh ti sinh (TI-0512). Dng kh ti sinh nng bao gm c nc b hp ph c lm lnh bng qut lm mt E-15 v quay v u ht ca CC-01, cn nc b ngng t v tch bng V-07. 5.2.4. Lm lnh Cht hp ph c lm lnh bng dng kh tai sinh nhnh khng s dng thit b gia nhit E-18. Cht hp ph s c lm lnh n khong 250C hoc trong khong 5oC so vi nhit kh t nhin. Ging nh trong qu trnh Heating, nhit qu trnh Trn Quc Ti 48

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cooling cng c kim sot bng cc ch bo nhit gn trn thn thp v nhit u ra kh ti sinh (TI-0512). 5.2.5. Nng p Thp hp ph c nng p bng dng kh t nhin sau khi c lm kh (109 bar, 37oC). Lu lng kh nng p c gii hn bng l hn ch (RO) khng ch thi gian nng p l 30 pht. Ging nh qu trnh gim p, s c s ngng t lng. Hydrocarbon lng s tch t trong ng ng cng ngh. 5.2.6. D phng Thp hp ph s c duy tr p sut kh t nhin l 109 bar bng ng nng p. Trong thi gian ny cc Hydrocarbon lng s bay hi do nhit mi trng. My nn kh ti sinh K-04 A/B s chy 100% thi gian. Trong qu trnh gim p v nng p, kh ti sinh s bypass qua thp hp ph bng ng bypass. Theo thit k, dng kh nguyn liu qua thit b hp ph bo ha hi nc (0,06%); tuy nhin thit b x l nc bng glycol offshore gim hm lng nc n 7 lb/MMSCFD (0,015%). Do thi gian hp ph ca thp hp ph c th ko di, trong trng hp ny c th dng K04. 5.3. Cc ch vn hnh ca thp. Thp vn hnh ch Auto. Sau khi thp hp ph c lp t, precomissionning and comissionning hay chy li th thc hin cc bc sau: - Cng tc LOCAL/REMOTE/MANUAL trn bng iu khin LCP ca V06A/B chuyn v v tr MANUAL ng m van. - a hai thp hp ph vo vn hnh song song bng cc m cc van KV-0551A, KV-0552A, KV-0551B, KV-0552B. - Thp V-06A hp ph, thp V-06B gim p: Bng cch ng van KV-0551B, KV-0552B; m van KV-0555B n khi p sut ca thp cn bng vi p st ca thp C05. Trn Quc Ti 49

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- Gia nhit cho V-06B: Bng cc m cc van KV-0553B, KV-0554B; ng van KV-0557; m van KV-0601; ng van KV-0602 thc hin qu trnh gia nhit, t setpoint cho TIC-0608 hoc m Manual van TV-0608. - Thc hin cc bc tng t khi a V-06B vo hp ph, V-06A gim p. - Chuyn cng tc LOCAL/REMOTE/MANUAL trn LCP ca V-06 v Auto. - n nt RESET TIME trn LCP thc hin thi gian gia nhit cho V-06B theo thi gian ci t l 4 gi 25 pht. - T y thp V-06A/B c vn hnh ch Auto. Thp vn hnh ch Manual. Thc hin cc bc sau: - Mt trong hai thp V-06 ang trong trng thi hp ph, thp ti sinh va kt thc chu k gia nhit. - Chuyn cng tc LOCAL/REMOTE/MANUAL trn LCP ca V-06 v Manual ng m van. - Thc hin ng m cc van theo bng trng thi cc van (5.4) v bng thi gian (5.3) vn hnh thp V-06. T y thp V-06A/B c vn hnh ch Manual. VI. SLUGCATCHER V CC THP 6.1 Slugcatcher Kh ngoi gin vo nh my s c tip nhn u tin ti Slugcatcher (SC-01/02) iu kin p sut t 65 bar- 109 bar (ty theo lu lng) nhit 20C n 30C (tu theo nhit mi trng). H thng Slug Catcher l h thng tch dng ng, bao gm hai dy ng vi dung tch mi dy l 1.400m3, th tch ny l tip nhn slug t ng ng 16 inch di y bin. Kh tch ra t Slug catcher c thu gom trong ng ng 30 inch v a v x l tip cc thit b h ngun. Trn Quc Ti 50

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Condensate tch ra t slug catcher c thu gom trong ng ng 36 v c a v bnh tch V-03 thng qua cc b iu chnh mc (LIC-0111A/B, LT-0121 A&B). Mc lng c th iu chnh bng cch chn la mc A (mc cao) hoc mc thp (mc B) thng qua b chn la HS-0111, HS-0121. Khi mc lng trong SC-01A/B t mc cao LAHH-0111 v LAHH-0121 van u vo nh my s ng li, khi mc lng xung thp t gi tr LALL-0111/0121 van SDV-0111 v SDV-0121 s ng li trnh hin tng lt kh t Slug Catcher v V-03. Nc c a ra t Slug Catcher thng qua thit b iu khin mc (ILIC-0112 & 0122) i vo bnh tch V-52 (Produced Water Flash Drum), ti y nc c lm gim ti p sut kh quyn v hydrocacbon b hp th s c a ra ng thi. Sau nc c chuyn n burn pit ME-52, Burn pit. Trng hp mc nc thp, van (ILV0112 & 0122) ng li nhm trnh tnh trng cc hydrocacbon b cun theo. ch hot ng bnh thng, c hai h thng Slug Catcher SC-01/02 u hat ng t c cng sut cao hn v mt thit b iu chnh HS-0101 (low selector), c lp t gia mc cht lng ca c hai h thng ny trong trng hp hot ng song song. Trong trng hp cn bo dng sa cha mt h thng Slug Catcher duy tr s hot ng bnh thng ca nh my, h thng cn li c c lp bi cc cp van tay trn ng kh vo v ra ca SC. Bnh tch V-03 (Slug Catcher Liquid Flash Drum), l mt bnh tch ba pha nm ngang hot ng 45 barG (75 barG ch GPP theo thit k) v 20C tch cc hydrocacbon nh b hp th trong condensate bng phng php gim p sut. p sut c gim xung t p sut ti SC xung cn 45 barG, nhit h xung thp hn nhit to thnh hydrate (20C), do c hai van iu chnh mc c lp t trc u vo bnh tch V-03 (mt van d phng). Trong trng hp hydrate c to thnh trong mt van, c th bm methanol vo hoc thay th bng van d phng. Nh my c thit k vi iu kin l nguyn liu u vo c bo ha nc, nhng thc t nguyn liu khai thc c ngoi khi khng phi han ton nh vy. Hin ti gin khai thc trang b mt h thng tch nc bng glycol hot ng lin tc. V vy, s hnh thnh hydrate rt t kh nng xy ra.

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Ti V-03 mt thit b gia nhit dng ng xon (E-07) c lp t gia nhit cho condensate ln cao hn 20C bng du nng trnh hin tng to thnh hydrate bn trong bnh. Cng sut gia nhit ca E-07 c iu chnh bng thit b iu chnh nhit -TICA-0303 (Temperature controller). Sau condensate thng qua thit b iu chnh dng FICA-0302 (fow controller) v thit b iu chnh mc LICA 0302 (level controller) a vo ch bin tip. C ba s la chn cho vic x l condensate: ti Rectifier - C-05 ch AMF, ti Deethanizer - C-01 ch MF hoc ti V-14 (Inlet scrubber 3) ch GPP. Nc c tch c ti V-03 c chuyn sang thit b iu chnh mc (LICA0301, level controller) a vo bnh tch V-52, Produced Water Flash Drum, nh trong trung hp nc t Slug Catcher. p sut hot ng ca bnh tch 3 pha V-03 c iu chnh 45 barG hoc 75 barG, bng van iu p PV-1209 cho ch hot ng AMF, PV-1305A/B cho ch hat ng MF) c lp t trn ng ng dn kh t V-03 hoc bng my nn kh iu K-03.

Hnh 3.5. T v tr slugcatcher quan st ton b nh my Trn Quc Ti 52

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6.2 Thp tch ethane (C-01, Deethanizer). p sut hat ng ca h thng tch enthane l 29BarA ch MF v GPP, 20BarA ch AMF. Nhit nh v y thp ch hot ng GPP l 140C v 1090C, cn ch MF tng ng l 6 v 120oC . Trong ch AMF khng c dng lnh hi lu, do vy nhit ca thp (C-01, Deethanizer) cao hn, nhit nh thp v y thp (C-01, Deethanizer) ln lt l 63.70C v 194C. Thp tch ethane (C-01, Deethanizer) gm 32 van kiu a, 13 van phn trn ca thp c ng knh l 2.600mm, v 19 a phn di ca thp c ng knh l 3.050mm. B o chnh p PDIA-1321, Pressure Differential Transmitter c lp t pht hin s chnh p trong thp. Bn b thit b ch th nhit c lp t trn cc a th 2,3,14,20 ca thp. Hai thit b trao i nhit reboiler E-01A/B reboiler gia nhit cho thp, mt reboiler lm vic, mt ch d phng. T reboiler dng lng s c chuyn n bnh cha V-15 ,Deethanizer Bottom Buffer, sau c a v thp n nh C-02 thng qua van FV-1301 c iu chnh bi b iu chnh dng FICA-1301 cascaded vi b o mc cht lng LICA-1302. 6.3. Thp C-04, GAS STRIPPER. Thp tch kh c lp sau khi nh my hon tt v a ch GPP vo hot ng. Tuy nhin, thp C-04 cng c th c a vo hot ng trong ch MF v AMP. Thp C-04 hot ng p sut 47BarA. Van PV-1801B s x kh ra uc t trong trng hp p sut thp C-04 vt qu gi tr cho php. iu kin lm vic bnh thng nhit nh v y thp ln lt l 44C v 40C. Thp C-04 gm 06 van dng a c ng knh 2.600mm. B thit b o chnh p PDIA-1802, Pressure Differential Transmitter) c lp t pht hin s chnh p trong thp do s to bt. B thit b ch th nhit c lp t trn a th 6 ca thp. Thp C-04 khng c thit b gia nhit reboiler y thp v thit b ngng t condenser. Hydrocacbon lng, nc c tch ra nh vo dng kh kh t u x my nn K-01. Lng di y thp C-04 thng qua van FV-1701 ( hot ng ch auto cascaded) c dn vo a th 14 hoc 20 ca thp tch ethane sau khi c gia nhit t 40C n 86C trong thit b trao i nhit E-04A/B nh dng nng c nhit 154C i ra t y thp C-02. Mc ch ca thit b trao i nhit ny l tn dng v thu hi nhit. Trn Quc Ti 53

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6.4. Thp n nh (C-02, STABILIZER). Thp chng ct C-02 lm vic p sut 11 barA nhm mc ch thc hin qu trnh phn tch gia cc cu t C4 v C5 ca dng lng t V-15 ti to ra hai loi sn phm ring bit : LPG (Bupro) v Condensate (C5+). LPG ra khi nh thp ( trng thi im sng) c lm lnh bng khng kh bi gin qut E-02 ngng t thnh lng (trng thi im si) ti V-02. Sau mt phn LPG s c bm P-01A/B hi lu li thp nhm tng tinh ct ca thp, mt phn khc c bm ti V-21A/B/C, kho cng Th Vi hay ti thp C-03 tch ring Propan v Butan. T l gia phn hi lu (FI-1501) v phn sn phm nh thp (FI-1601) c gi l ch s hi lu (reflux ratio). Ch s ny cng ln th mc phn tch cng cao nhng tn tht nng lng gia nhit y thp v lm lnh nh thp cng ln. y, ta khng cn thit phi m bo tch qu cao m mc ch l cn ti u lng LPG thu c, v vy t thc t vn hnh v tnh ton m phng th ch s hi lu ti u nn vo khong 0.5 - 0.6 (khng nn nh hn 0.4) Thp C-02 hot ng p sut 11 BarA v c iu chnh bng h thng qut lm lnh, van bypass PV-1501A v van iu p PV-1501B. Thp C-02 gm 30 van kiu a c ng knh l 2.140mm. Dng nhp liu i vo a th 10. Bnh cha V-05 nh thp, v thit b gia nhit y thp Reboiler E-03. Trong thp C-02 LPG (propane v butane) c tch ra t dng condensate vo. Hi LPG nh thp C-02 c ngng t hon tan 43C trong bnh ngng (E-02, stabilizer Condensate) v c chuyn n bnh thu hi (V-02, Stabilizer Reflux Accumlator), bnh V-02 l mt bnh nm ngang c ng knh l 2.200mm v di 7.000mm, LGP t bnh cha V-02 c cc bm (P01A/B, Stabilizer Reflux Pumps) vi tc l 180m3/h, chy bng ng c c cng sut 75kw, bm ln p sut khong 17 BarA. Mt phn dng LPG ny c cho hi lu tr li thp m bo tinh khit ca sn phm, phn cn li c a v V-21A/B nh l LPG thng phm hay i vo ng ng xung Th Vai Terminal. Mc cht lng trong V-02 c iu chnh thng qua van FV-1601. Thit b gia nhit cho y thp E-03 c lp t y ca thp C-02 cung cp nhit cho thp nhit c iu khin bi TV-1523 c lp t trn ng ng dn du nng. Phn condensate t y thp thng qua thit b iu chnh mc (LICATrn Quc Ti 54

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1501,Level Cotrol) i vo bn cha Condensate (TK-21, Condensate Day Tank) c th tch l 2.000m3 hoc ng ng dn condensate sau khi c lm lnh xung 600C trong thit b trao i nhit E-04, Condensate Cross Exchanger nh dng lnh i ra t y thp C-04 (trong ch hot ng GPP) v tip tc c lm lnh xung 45C trong thit b trao i nhit bng khng kh E-09, Condensate Trim Cooler. B o chnh p PDIA-1521, Pressure Differential Transmitter c lp t pht hin s chnh p trong thp do s to bt. Ba thit b ch th nhit c lp t trn cc a th 9,10, 30 ca thp C-02. 6.5 Thp tch C-03 (C3/C4, SPLITTER). Thp chng ct C-03 lm vic p sut 16 barA nhm mc ch thc hin qu trnh phn tch gia cc cu t C3 v C4 ca dng Bupro lng t V-02 ti to ra hai loi sn phm ring bit : Propan v Butan. Nguyn liu Bupro c gia nhit trc ti E-17 bi dng Butan i ra t y reboiler E-10 sau ti a th 10 ca thp C-03 (gm c 30 a). Propan ra khi nh thp ( trng thi im sng) c lm lnh bng khng kh bi gin qut E-11 ngng t thnh lng (trng thi im si) ti V-05. Sau mt phn Propan s c bm P-03A/B hi lu li thp nhm tng tinh ct ca thp, mt phn khc c bm ti V-21A/B/C, kho cng Th Vi. Sn phm lng ra khi y thp c ho hi mt phn quay tr li thp, phn lng cn li c dn ti E-17 gia nhit cho nguyn liu, tip tc c lm mt bi qut E-12A/B i ra V-21A/B/C hoc KCTV. Thp tch C-03 bao gm 30 van dng a c ng knh l 1.750mm. Dng nhp liu c a vo a th 14. Thp lm vic p sut 16 BarA v c iu chnh bng h thng qut lm mt bng khng kh E-11 v cc van iu p PV-2101A/B. B o chnh p PDIA-2121, Pressure Diferential Transmiter c lp t nhm kim sot chnh p qua thp nm trong gii hng cho php. Ba thit b ch th nhit c lp t trn cc a th 13,14,30 theo di nhit lm vic ca thp. VII. SN PHM LNG Trn Quc Ti 55

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7.1. Thit b o im sn phm lng i vo ng ng. Ba ng ng dn sn phm lng c ng knh l 6 inch c thit k vn chuyn condensate, propane v butane t nh my x l kh Dinh C ti kho Cng Th Vi, nm cch nh my 28 km. iu kin lm vic bnh thng cc sn phm lng s c vn chuyn trc tip n Th Vi Terminal qua ba ng ng ny. Theo thit k mt ng dng vn chuyn condensate, mt ng vn chuyn butane v ng cn li vn chuyn propane. Cc thit b o dng dng coriolis ME-24, 25, 26 c lp t trn mi ng ng cng vi thit b kim tra dng FIQ-2604 (check meter) kim tra chnh xc cc thit b o trn. 7.2. H thng bm v bn cha Theo thit k ban u ba bn cha LPG v mt bn cha Condensate c s dng nh bn d phng trong trng hp c s c Th Vi Terminal. Ngoi ra cc bn cha LPG cn c s dng np LPG cho xe bn. Bn cha Condensate TK-21, c ng knh l 13.000mm v cao 15.600mm v c th tch l 2.000m3 c thit k c kh nng cha c lng condensate sn sut ra c trong 3 ngy ti nh my (Condensate sn xut c hng ngy trong nh my x l kh Dinh C l 575m3/ngy). Cc bm vn chuyn Condensate P-23A/B c cng sut l 30m3/h, chiu cao ct p 133m nc, c chy bi ng c in cng sut 30kw vn chuyn condensate trong bn cha ti ng ng dn condensate i kho cng Th vi. Bm P-23A/B l bm ly tm n cp. Thit b o dng FIA-2301 (Orifice flow meter) s kch hot dng hot ng ca bm khi lu lng dng qua bm thp hn gi tr cho php bo v bm. Thi b o LIA-2321, Tank Gaug c lp t bn cha v n bo mc LAHH2321 s kch hot ng van u vo (SDV-2321) bn cha khi mc bn cao hn gi tr cho php, n bo mc (LALL-2321, Level Alarm) ng u ra (SDV-2322) v t ng kch hot dng bm khi mc bn thp hn gi tr ci t. Ba bn cha LPG V-21A/B/C c ng knh 3.350mm v di 54.610mm l dng bn nm ngang c thit k cha LPG. Bn c th tch l 450m3 (theo thit k V-21A dng cho propane, V-21B dng cho Trn Quc Ti 56

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Butane, V-21C dng cha sn phm khng t cht lng, tuy nhin V-21A v V-21B c th lu tr Bupro trong ch hot ng MF cng nh cc sn phm khng t cht lng trong trng hp cn thit). V mt thit k ba bn cha ny ging ht nhau v c thit k vi p sut l 17.5BarG tng ng vi p sut hi propane 500C, v vy bt c bn no cng c th c s dng nh l bn cha sn phm propane ha lng. Cc PV-2401A/B/C c tc dng iu chnh p sut ca bn cha khng vt qu set point bng cch x mt lng hi trong bn ra uc t. Cc van an ton PSV240A/B/C bo v bn khi hin tng qu p. 7.3. H thng np LPG cho xe bn (Truck Loading). Cc bm xut LPG P-21A/Bc cng sut 70m3/h, chiu cao ct p 61.2m nc, c chy bi ng c in c cng sut 15kw dng xut LPG cho xe bn t cc bn cha sn phm. Bm P-21A/B l loi bm ng n cp, p sut lm vic c thit k sao cho p ng vic xut LPG qua trm xut ME-21 (LPG Loading station). Thit b o dng FIA-2402, Orifice flow meter s dng hot ng ca bm P-21A/B khi lu lng dng qua bm thp hn gi tr dng min (trong thit k ca bm). 7.4. Sn phm khng t cht lng: Bm P-22 c cng sut 40m3/h, chiu cao ct p 591.5m, chy bng ng c in 75 kw c nhim v bm cc sn phm khng t cht lng t bn cha v li C-01 ti ch trnh t b sn phm. 7.5. Cc h thng bo v an ton 7.5.1. H thng uc t. H thng uc t c thit k t b kh i ra t nh my thng qua cc van an ton, van iu p Ton b kh x ra c thu gom vo ng thu gom (flare header) c ng knh 20 inch sau c a n bnh tch lng V-51, Flare K.O Drum. V-51 c ng knh 3.100mm, di 8.200mm, l bnh nm ngang c tc dng loi b tan b cht lng b cun theo trc khi a ra t ti uc t ME-51, Flare Stack. uc t c ng knh 30 inch, cao 70m, cng sut 212 tn/h trong trng hp hot ng khng lin Trn Quc Ti 57

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tc v 77.2 tn/h trong trng hp hot ng lin tc. B nh la bng in c lp t to ra ngn la t kh, v thit b ny c theo di nh ba u d la BSL2701A/B/B, c lp t trn nh ca ct uc. Cht lng thu c trong bnh V-51 c chuyn i bng bm P-51A/B Flare K.O Drum Pum (cng sut l 10m3/h, p sut l 77m nc chy bng ng c in c cng sut 11kw) n hm t burn pit. Bm P-51 t ng khi ng khi tn hiu bo mc H1 t thit b ch mc cht lng trong bnh LIA-2701, Drum Liquid Level Indicator kch hot, nu mc cht lng tng cao hn th tn hiu bo mc H2 t LIA-2701 s kch hot a c hai bm vo hot ng. C hai bm s dng hot ng khi c tn hiu L kch hot. n bo mc (LALL-2701, Level Alarm) s kch hot dng vo v bm trong trng hp mc thp v LAHH 2701 s kch hot ng van u vo nh my ESDV101, Plant Intel Valve khi mc V-51 cao hn gi tr ci tThit b gia nhit E-52, Closed Drain Heater c nhim v gia nhit cho cht lng ln 550C bng du nng tch t trong V-51 nhm bay hi trit cc hydrocacbon nh trc khi thi ra burn pit. 7.5.2. H thng x kn. H thng x kn c thit k loi b cht lng i ra t nh my v c a vo gia nhit bay hi mt phn hydrocacbon nh trc khi t b burn pit. Ton b cht lng c thu gom vo trong ng ng 12 inch v c chuyn n thit b trao i nhit E-52 (closed drain heater) gia nhit dng lng ln 55C, sau a v bnh tch V-51. Kh c a ra uc t b, lng tch ra c bm P-51A/B a v burn pit. Cng sut ti a ca burn pit l 8.9 m3/h. 7.6. H thng ph tr: 7.6.1. H thng kh cng c H thng c nhim v kh v sch iu khin cc van, ngoi ra cn cung cp kh ph tr cho nh my. H thng kh cng c bao gm 2 my nn kh K-61 A/B, 2 my lm kh kh M-61 A/B v cc bnh cha kh cng c V-61, bnh cha kh ph tr V-62.

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Mt cm my nn kh K-61 bao gm b lc kh u vo, b gim thanh, phn nn piton dn ng bng ng c in, thit b lm mt v thit b tch kh ngng t. Mt cm lm kh kh M-61 bao gm b lc kh u vo, b lm lnh, thit b tch kh ngng t v b lc kh u ra. u tin hng u ca h thng l cung cp kh cng c cho h thng iu khin do khi p sut ca h thng kh iu khin xung thp hn 700 kPaG th van PCV-5101 v PCV-5201 s ng dng cung cp kh cho phn kh ph tr v sn xut nit. Cc thng s thit b ca h thng: My nn kh K-61 A/B: My nn piston 2 cp khng s dng du bi trn. p sut x: 1000 kPaG. Nhit kh u