I HC BCH KHOA TPHCMB MN: QU TRNH & THIT B

BI THUYT TRNHS DNG PHN MM PRO/II M PHNG QU TRNH CHNG CT GIN ON

NGUYN V NAMMSSV: 61002048NGUYN TH LINHMSSV: 61002048

CBHD: THY TRN TN VIT

MC LC

I. M PHNG V THIT K M PHNGII. CC PHN MM M PHNG TRONG CNG NGH HA HCIII. TNG QUAN V PHN MM PRO/IIIV. FLUID PACKAGEV. THIT B BATCH DISTILLATIONVI. YU CU M PHNGVII. KT QU

I. M PHNG V THIT K M PHNG. M phng c th c nh ngha l mt qu trnh to mtm hnh(chng hn nh m t mt khi nim tru tng) ca mth thngc sn (nh mt d n, kinh doanh, qung m, khu rng, c quan trong c th) xc nh v hiu r nhng nhn t iu khin h thng, hay d on/d bo hnh vi hot ng ca h thng trong tng lai. Phn ln cc h thng iu c m t nh lng da trn phng trnh hoc nguyn tc c m phng. M phng l qu trnh "bt chc" mt h thng c thc. Cc chng trnh my tnh c th to ra cc m phng nh m phng v thi tit, cc phn ng ho hc, thm ch l cc qu trnh sinh hc. M phng l mt cng c hiu qu v quan trng bi n a ra phng thc cc thit k la chn (hoc k hoch, chnh sch) c th c nh gi m khng cn phi thc nghim trn h thng thc (iu ny c th tiu tn nhiu kinh ph, thi gian, nguy him v khng thc t). N cho php bn tr li cu hi iu g s xy ra nu? v mt h thng m khng cn tri nghim tht s trn chnh h thng y. Thit k m phng l thit k vi s tr gip ca my tnh vi cc phn mm chuyn nghip. Thit k m phng thng c s dng : Thit k mt qu trnh mi Th li, kim tra li cc qu trnh ang tn ti Hiu chnh cc qu trnh ang vn hnh Ti u ha cc qu trnh hot ngII. CC PHN MM M PHNG TRONG CNG NGH HA HC.Trong cng ngh ha hc, c nhiu phn mm m phng c s dng. Mi phn mm m phng c nhng u im ring v c s dng cho cc mc ch khc nhau. V d: DESIGN II (WINSIM): s dng trong cng nghip ha hc ni chung HYSIM (HYSYS): s dng trong cng nghip ch bin kh OLGA 2000: s dng thit k m phng ng ng PRO II (SIMSCI): s dng trong cng nghip du kh.

III. TNG QUAN V PHN MM PRO II

giao din khi khi ng PRO II

Pro II l mt trong nhng sn phm ca t hp SIMSCI, c thnh lp t nm 1957 chuyn v thit k cc phn mm m phng trong cng ngh ha hc, c bit l v nn cng nghip lc ha du. Hin nay sn phm ca t hp ny kh a dng, bao gm cc phn mm v thit k cc thit b, ng ng, tnh ton kinh t. Pro II l sn phm u tin ca SIMSCI, l kt qu ca bn ln nng cp t chng trnh u tin nm 1967 n nm 1988 th chnh thc ra mt. Chng trnh ny khng ngng c nng cp, b sung v hin nay c phin bn mi nht l 9.2 Phn mm ny c th ng dng vo nhiu qu trnh: X l du, kh Tinh ch Ha du Polymer Dc phm So vi cc phn mm m phng khc, Pro II c u im l giao din thn thin, trc quan. Th vin cu t phong ph v s. Tuy vy hin nay, cc ti liu hng dn bng ting Vit cha nhiu. y l mt kh khn cho nhng ngi mi lm quen vi phn mm ny. Cc bc thc hin mt qu trnh m phng bng phn mm Pro II: La chn h n v. V lu qu trnh Xc nh cc cu t trong qu trnh Chn phng php nhit ng thch hp Cung cp cc d liu cho dng Cung cp cc iu kin lm vic cho qu trnh Chy m phng c v phn tch kt quIV. FLUID PACKAGECc tnh cht nhit ng l c s d liu quan trng nht cho vic tnh ton qu trnh ton h thng. Cc tnh cht ny thay i lin tc theo cc yu t khc nh nhit , thnh phn, p sut. Do vy, cn phi thnh lp cc phng trnh biu din s tng quan gia cc yu t ny. T , cc m hnh nhit ng ra i. Cho n nay, cha c m hnh nhit ng no c th m t ton b tnh cht ca tt c cc cht. Mi m hnh nhit ng ch thch hp nhng iu kin v thnh phn, nhit , p sut khc nhau. Do vy, la chon m hnh nhit ng thch hp l yu t quan trng nht, gip cc phn mm c th tnh ton chnh xc.C nhiu phng php tnh ton cc tnh cht ny, trong , quan trng nht l hai phng php: Phng php tng quan API v Rackett Phng php phng trnh trng thi: phng trnh bc ba tng qut, cng thc alpha, cc qui lut hn hp, phng trnh SKR, phng trnh PR, .Phng php API v Rackett tnh ton kh chnh xc t trng pha lng, cn cc tnh cht nhit ng khc c tnh ton rt chnh xc bng cc phng trnh trng thi.Mi m hnh nhit ng cho php tnh ton cc thng s: Hng s cn bng pha K: th hin s phn b ca cc cu t gia cc pha iu kin cn bng. Enthanpy ca cc pha lng v pha hi: xc nh nng lng cn thit chuyn mt h t trng thi nhit ng ny sang trng thi nhit ng khc. Entropy ca pha lng v pha hi: nhm tnh ton cc thng s trong cc qu trnh nn, dn n. T trng pha lng v pha hi: tnh ton qu trnh truyn nhit, chng ct, ngng t la chn m hnh nhit ng thch hp, nn da vo cc thng s: Bn cht cc c trng nhit ng ca h nh: hng s cn bng lng-hi ca cc qu trnh Thnh phn hn hp Phm vi nhit v p sut Tnh sn c ca cc thng s ca thit bCc m hnh nhit ng sn c v cch vit y trong phin bn Pro II 8.1:IDEALIdeal

GSGrayson-Streed

CSChao_Seader

IGSImproved Grayson_Streed

GSEErbar Improved Chao-Seader

CPCurl-Pitzer

BK10Braun K10

JGJohnson-Grayson

LKLee-Kesler

APIAPI Liquid Density

RACKETTRackett Liquid Density

COSTALDCOSTALD Liquid Density

LIBRARYLibrary Liquid Entropy

SKRSoave-Redlich-Kwong

PRPeng-Robinson

SRKKDSRK Kabadi-Danner

SRKHSRK Huron-Vidal

SRKPSRK Panagiotopoulos & Reid

SRKMSRKP Modified

SRKSSRK Ssmsci

PRHPR Huron-Vidal

PRPPR Panagiotupoulos & Reid

PRMPRP Modified

UNIWAALUNIWAALS

BRWSBenedict-Webb-Rubin-Srarling

HEXAMEAssociating EOS for HF systems

LKPLee-Kesler-Plocker

NTRLNTRL

UNIQUACUNIQUAC

UNIFACUNIFAC

UFT1UNIFAC Lyngby

UFT2UNIFAC Dortmund

UFT3Modified UNIFAC

UNFVUNIFAC Free Volume option

WILSONWilson equation

VANLAARVan Laar equation

MARGULESMargules equation

REGULARRegular solution theory

FLORYFlory Huggins

HOCVHayden-OConnell vapor fugacity

TVIRIALTruncated virial vapor fugacity

IDIMER IDIMER vapor fugacity

ALCOHOLAlcohol package

GLYCOLGlycol package

SOURSour water package

GPSWATERGPA sour water package

AMINEAmine package

la chn m hnh nhit ng thch hp, ta c th tham kho trong cc ti liu i km.V. THIT B BATCH DISTILLATIONL thit b m phng qu trnh chng ct gin on.

Batch Distillation Dialog BoxNumber of Theoretical: s a l thuyt, ti thiu l 2. Thit b ngng t condenser mc nh l a u tin, thit b ung nng reboiler l a cui cng.Maximum Simulation: thi gian m phng ti a. Khi ht thi gian ny, qu trnh m phng s kt thc.Batch Cycle Time: thi gian thc hin mi giai on. Thit lp p sut cho h thng.

Thit lp li cun cht lng

Thit lp cc thng s nhit ng ca h. Phi chn gi nhit ng oVLE hoc VLLE.

VI. YU CU M PHNGM phng qu trnh chng ct phn on thu c ethanol 95o t dung dch ln men tinh bt c nng ethanol 8o, cc tp cht khc khng ng k. Lu lng nhp liu: 100 m3/m. Nhp liu lng si 1atm. Thi gian mi m l 1h. Thi gian m phng l 10h. Phng php nhit ng la chon l UNIFAC.

VII. KT QU