1

LI CM N Trong sut qu trnh tm hiu ti liu v hon thnh n nhp mn, chng

em nhn c s hng dn, gip qu bu ca cc thy c trong vin K thut ha hc, cc anh ch kha trn v cc bn. Vi lng knh trng v bit n su sc chng em xin c by t li cm n chn thnh ti:

Vin k thut ha hc, B mn Cng ngh Hu c- Ha Du Trng i hc Bch Khoa H Ni to mi iu kin thun li gip ti trong qu trnh hc tp v hon thnh n nhp mn.

Ph gio s-Tin s L Minh Thng, ngi ht lng gip , dy bo, ng vin v to mi iu kin thun li cho chng em trong thi gian qua.

Xin chn thnh cm n cc thy c trong hi ng chm bo v n.

Cui cng em knh chc qu Thy, C di do sc khe v thnh cng trong s nghip cao qu.

Em xin chn thnh cm n!

2

Mc Lc

M U ....................................................................................... Error! Bookmark not defined.

M U ........................................................................................................................................ 3

TNG QUAN V AXIT ACRYLIC ............................................................................................. 4

PHN I: TN GI, CU TO, TNH CHT ....................................................................... 5

1.TN GI ........................................................................................................................ 5

2.CU TO ...................................................................................................................... 5

3.TNH CHT VT L ................................................................................................... 6

4.TNH CHT HA HC ............................................................................................... 8

4.1 Phn ng ca nhm vinyl ............................................................................................. 8

4.2 Phn ng ca nhm carboxyl ........................................................................................ 9

PHN II:NG DNG V PHNG PHP SN XUT ........................................................ 10

1. NG DNG ...................................................................................................................... 10

1.1 S dng vi vai tr l ha cht trung gian .......................................................... 10

1.2 S dng vi vai tr l monome trong phn ng trng hp ................................. 10

2. PHNG PHP SN XUT .......................................................................................... 10

3. BO QUN, LU TR & X L ................................................................................. 18

PHN III: VN CON NGI, MI TRNG .................................................................. 19

1. NH HNG CON NGI ........................................................................................... 19

2. NH HNG MI TRNG ..................................................................................... 20

3. NGUN PHT THI ................................................................................................... 20

3.1. T cng nghip ......................................................................................................... 20

3.2. T t nhin ............................................................................................................... 21

3.3. Sn phm tiu dng .................................................................................................. 21

TI LIU THAM KHO ............................................................................................................ 22

3

M U

K thut ha hc l mt lnh vc tng i mi v c chnh thc thnh lp

vo cui nhng nm 1800. Hin nay ngnh k thut ha hc ha hn rt nhiu c

hi cho sinh vin trong ngnh v n ng mt vai tr quan trng khng km g cc

ngnh kinh t, k thut khc trong i sng hng ngy. K thut ha hc ch yu

lin quan n vic thit k, ci thin v duy tr cc qu trnh lin quan n ha hc

hoc sinh hc, bin i cho sn xut quy m ln.nhng ngi lm vic trong lnh

vc ny c gi l k s ha hc. Cc k s ha hc s m bo cc tin trnh

ang hot ng mt cch an ton, bn vng v kinh t. H c th lm vic c

trn rt nhiu lnh vc t k thut n kinh t, mi trng

Vi s pht trin khng ngng ca x hi, Vic nghin cu cc vt liu mi, cc hp cht mi c nhiu ng dng v kh nng siu vit phc v i sng ngy cng c y mnh. Cc vt liu dn c tm ra, c nghin cu. Vi nhiu tnh cht c bit, axit acrylic ngy cng c nhu cu ln cho cng nghip. Vi nng sut hang chc nghn tn mt nm, thc s axit acrylic ng gp khng nh vo s pht trin ca cng nghip. c bit l cng nghip sn v nha polymer.

Vy axit acrylic l g ? C nhng c im v tnh cht no ? ng dng ca n ra sao ? Cc quy trnh sn xut. ti c tn Tng quan v Axit Acrylic ca ems au y xin c trnh mt cch khi qut nhng vn nu trn.

4

TNG QUAN V AXIT ACRYLIC

5

PHN I: TN GI, CU TO, TNH CHT

-------******-------

1.TN GI

Axit Acrylic C3H4O2 (CH2 = CHCO2H )cn c cc tn gi:

Danh php UIPAC: Axit 2-Propenonic,

Hoc Axit Ethylenecarboxylic

Axit Vinylformic

Axit Acroleic ( Theo Keith v Walters -1985)

2.CU TO

Axit acrylic l mt hp cht hu c vi cng thc CH2=CHCO2H y l axit cacboxylic khng no n gin, bao gm mt nhm vinyl kt ni trc tip n mt axit cacboxylic im cui cng. Cht lng khng mu ny c mt c im cht hoc mi chua. N l th trn ln vi nc, ru, ete, v chloroform. Hn mt t kg c sn xut hng nm.

6

M hnh khng gian

3.TNH CHT VT L

Axit acrylic l mt cht lng khng mu, trong sut c s dng rng ri , do cu trc ha hc ca n to iu kin cho s kt hp d dng hn vi chui ln ca cc hp cht to thnh polyme . Cng thc phn t l C3H4O2 , trng lng phn t ca 72 g/mol.

L mt cht c th ha tan trong nc v c nhit nng chy bng 14 C v im si l 141 C. Vic tip xc trc tip vi axit c th gy kch ng cho da v h thng h hp. Trong khi tip xc nh khng gy hi cho c th, liu cao ca axit ny c th c hi dn n cc vn ca ph phi , nu nut phi c th gy bng nng trong ming v ng tiu ha . Bn cnh , hi axit c th gy ra tc nghn trong mng nhy v h h hp . Do cu trc ha hc ca n, axit acrylic phn ng vi mt s lng kh ln cc hp cht v c v hu c dn n s hnh thnh ca mt s lng ln cc hp cht c phn t lng thp v cao .

c im S Liu, Thng tin Ti Liu Tham Kho

Trng thi, Mu sc

Cht lng , Khng mu

Keith v Walters 1985

Khi lng phn t

72.06 g/mol-1 Budavari et al. 1989

Nhit ng bng

13C http://en.wikipedia.org/wiki/Acrylic_acid

Nhit nng chy

14 C, 287 K, 57 F

Budavari et al. 1989

Nhit si

141 C, 414 K, 286 F

Budavari et al. 1989

7

Kh nng ha tan trong nc

> 10 g L Keith v Walters 1985

nht 1.3 cP at 20 C (68 F)

Verschueren 1983

p Sut Hi

3,2 mm Hg 20oC

Verschueren 1983

im chp chy

68 C (154 F) Budavari et al. 1989

Nhit t bc chy

429 C (804 F) http://en.wikipedia.org/wiki/Acrylic_acid

Mt 1,051 g/ml 25oC

chemicalbook.com/ChemicalProductProperty_EN_CB7307797.htm

Mt hi 2,5 so vi khng kh

Ch s khc x

N20/ D 1,421

Nhit lu tr bo qun

15-250C

8

4.TNH CHT HA HC

Axit acrylic l mt cht lng khng mu c mi kh chu cht nhit phng v p sut. Ngng mi ca n thp (0,20-3,14 mg / m3). N l c th trn trong nc v hu ht cc dung mi hu c.

Axit acrylic trong thng mi c hai loi: loi k thut (94%) cho este ha, v lp bng (98-99,5% tnh theo trng lng v ti a l 0,3% nc bng trng lng) sn xut nha ha tan trong nc

Do trong cu to phn t c hai nhm c trng ( vinyl v carboxyl ) nn tnh cht ha hc ca axit acrylic l tnh cht ca c hai nhm to thnh.

Axit acrylic phn ng d dng vi cc gc t do v a in t hoc cc tc nhn sinh hc . N c th polyme ha trong s hin din ca axit (axit sulfuric, axit chlorosulfonic),kim (amoni hydroxit), amin (ethylenediamine, ethyleneimine, 2 aminoethanol), mui st, nhit cao, nh sng, peroxit, v cc hp cht khc dng peroxides hoc cc gc t do. V do , mt cht c ch n nh c thm nhm lm lnh axit acrylic, ngn chn s trng hp ta nhit mnh. Cc cht c ch thng c s dng trong qu trnh iu ch axit acrylic l:

Monomethyl ether of hydroquinone (methoxyphenol) ti 200 20 ppm

phenothiazine mc 0.1%

hydroquinone mc 0.1%

Methylene blue mc 0.5 ti 1.0%

N,N'-diphenyl- p-phenylenediamine mc 0.05% cng c th c s dng.

Axit Acrylic ng bng 13 C. S ti tan gi di iu kin nhit khng ph hp l mt l do thng xuyn khin cho axit acrylic trng hp.

Axit acrylic l mt tc nhn n mn mnh m vi nhiu kim loi, chng hn nh thp thun khit. Tham gia phn ng ca nhm vinyl v gc cacboxyl, c bit l cht phn ng nh chc, thng to ra con ng thun li vi cc cht a vng v d vng.

CC PHN NG NGOI RA:

4.1 Phn ng ca nhm vinyl

Axit Acrylic sn sang kt hp vi Hydro, Cc hp cht Halogen v Hydro Cyanides, nh thng thng vo Olefin.

Trong X l: H2, Halogen hoc CN.

Ngoi ra , phn ng din ra trong s c mt ca cht xc tc c bn, chng hn nh cc amin bc ba, mui amoni bc bn, v ancoxit kim:

trong X =-C (NO2) R'R ",-CH (COOR ') 2 v R', R" l alkyl hoc aryl.

Amoniac v amin l c bn phn ng xy ra m khng cn cht xc tc, trong X =-NH2,-NHR,-NR'R ",-NR'COR" hay-NHNR2.

9

Vic b sung cc amin thm hoc amit v cc amin chnh tert-alkly th hiu qu cho vic thc y bi axit. Amin c th tn cng c chc vinyl v carboxyl , nhng cc sn phm ca phn ng phn hy ny l cung cp cho amit N-thay th.

Hidro sunfit trong s c mt ca lu hunh v amoni polysunfit hoc cht xc tc amin

cho axit polythiodipropionic v este.

nhit cao hoc lu tr lu c s nh trng ha:

Trong s hin din ca cht xc tc nh tributyl phophine , acrylates cng c th nh trng ha cho sn phm:

4.2 Phn ng ca nhm carboxyl

Axit acrylic c chuyn i d dng thnh cc mui tng ng ca n, tr thnh anhydride acrylic bi phn ng vi acetic anhydride, thnh acryloyl clorua bng phn ng vi benzoyl hoc thionyl clorua. Qu trnh este ha ca axit acrylic l qu trnh c ngha kinh t quan trng ca phn ng.

V d minh ha :

____________________________________________________________________________

10

PHN II:NG DNG V PHNG

PHP SN XUT

-------*****-------

1. NG DNG

Axit acrylic ch yu c s dng trong cng nghip theo hai hng chnh 1.1 S dng vi vai tr l ha cht trung gian

Axit acrylic ch yu c chuyn i thnh nhiu loi ha cht khc, bao gm khc monome nh mui acrylic hoc este acrylic (nh methyl acrylate, ethyl acrylate,butyl acrylate v 2-ethylhexyl acrylate). Sau khi trng hp ha hc, cc thnh phn c s dng trong:

Sn phm hp v sinh nh nha superabsorbent Sn nc v cc lp ph Cht kt dnh xy dng v cht kt dnh nhy p Lp ph cho hng dt may, g v giy Hon thin sn phm t da, c bit l da ln v nubuck Sn xut cc loi nha khc nhau Sn xut si dt v vi khng dt

1.2 S dng vi vai tr l monome trong phn ng trng hp Cc homo hoc copolyme c ngun gc t axit acrylic c s dng trong:

Sn phm v sinh v cht ty ra; Ha cht x l nc thi

2. PHNG PHP SN XUT

V axit acrylic v este ca n t lu c nh gi v mt thng mi, nhiu phng php khc c pht trin nhng hu ht b b qua v l do kinh t hoc mi trng. Phng php u c a ra l s hydrocacboxyl acetilen:

HCCH + CO + H2O CH2=CHCO2H

Phng php ny i hi niken cacbonyl v p sut cao ca kh carbon monoxide. N tng c sn xut bi qu trnh thy phn ca acrylonitrile c ngun gc t propene bi ammoxidation, nhng b b ri bi v phng php cogenerates dn xut amoni.

Cng ty Dow Chemical v mt i tc, OPX cng ngh sinh hc, ang iu tra s dng ng ln men sn xut axit 3-hydroxypropionic (3HP), mt acid tin thn acrylic. Mc ch l gim pht thi kh nh knh.

11

Hin nay, Axit Acrylic ch yu c iu ch t propylene, sn phm ph ca qu trnh sn xut xng v etilen theo phn ng:

Mt s phn ng ph c th xy ra, hu ht cc kt qu trong qu trnh oxy ha ca cht phn ng v sn phm. mt sphn ng ph in hnh c a ra di y:

Do , thit lp qu trnh in hnh bao gm hai - l phn ng h thng vi mi l phn ng cha cht xc tc ring bit v hot ng ti iu kin ti a ho sn xut AA. L phn ng u tin thng hot ng ti nhit cao hn n v th hai.

Di y l Gii thiu tng quan v quy trnh iu ch Axit Acrylic t propylene

Quy trnh trng hp c s c trnh by trong Hnh 1. Qu trnh ny to ra 50,000 tn mi nm ca 99.9% ca a - xt axit acrilic ( AA ) thnh phm. S gi h thng hot ng vo khong 8000 gi/nm. L phn ng trong qu trnh th hin trong hnh 1 s dng mt cht xc tc c quyn loi b vic sn xut ca cc trung gian, acrolein. V vy, qu trnh ny i hi ch c mt l phn ng duy nht. sau khi phn ng, n l iu cn thit lm mt cc sn phm (l phn ng nc thi) mt cch nhanh chng trnh thm ng nht phn ng oxy ha. iu ny t c bng cch nhanh chng dp tt cc l phn ng nc thi, Dng chy 6, bng cch bm nc ct vo n. Cc phn ng t ng nht s khng din ra qu lu nh cc l phn ng nc thi , c lm lnh n di 100 C ngay lp tc sau khi l phn ng. Phc hi thm AA v axit axetic (mt sn phm) t kh, Dng chy 7, li cc du phn cch pha (V-301) c thc hin trong My ht khthi, T-301.

Dng cht lng , Dng chy 9 , li phn hp th l mt axit long dung dch nc . N c kt hp vi cc cht lng t tch pha, V -301 , l ngun vo cho phn vt, Stream 13 .Dng ny c gi n phn chit lng - lng, X -301 , loi b u tin axit phn t mt nc trc

12

khi lc . C mt s ct, trao i , my bm, ng , thit b khc trong X -301 . Pha hu c li X -301 , Dng chy 15 , c 99,5% ca AA v axit axetic trong Dng 13 v v c bn khng c nc hoc cc thnh phn khc. Phn ny c gi n cc ct lc axit , T- 302 , trong 95% axit axetic sn phm ph c sn xut trn khng v 99,9 % Axit Acrylic c sn xut pha di v lm mt trc khi c gi n lu tr. Pha nc t Phn vt, Dng chy 14 , c gi n mt nh my x l nc thi , ni n c kh nhim trc khi c tr li cho mi trng.

13

Hnh 1:S Quy trnh sn xut Axit Acrylic t Propylen

14

Bng 1: Bng cc Dng chy

Dng 1 2 3 4 5 6 7 8 9

Nhit (C) 25 159 25 191 250 310 63 40 40

p Sut (bar) 1.0 6.0 11.5 4.3 3.0 3.5 2.0 2.4 1

Phn hi 1.0 1.0 1.0 1.0 0.0 1.0 0.0 0.0 0.0

L.Lng K.L (tonne/h)

39.05 17.88 5.34 62.27 1070.0 62.27 3.08 1895. 37.89

L.Lng Mol (kmol/h)

1362.9 992.3 127.0 2482.2 - 2444.0 148.5 85200.0 1342.9

L.Lng Mol hp thnh

Molten salt

Propylene - - 127.0 127.0 - 14.7 - - 14.7

Nitrogen

1056.7 - - 1056.7 - 1056.7 - - 1056.7

Oxygen

280.9 - - 280.9 - 51.9 - - 51.9

Carbon Dioxide - - - - - 60.5 - - 60.5

Nc 25.3 992.3 - 1017.6 - 1165.9 140.9 78870 150.1

Axit Acetic - - - - - 6.54 0.65 415 1.11

Axit Acrylic - - - - - 87.79 6.99 5915 7.97

15

Bng 1: Bng cc Dng chy ( Tip theo)

Dng 10 11 12 13 14 15 16 17 18

Nhit (C) 50 48 25 102 90 47 47 40

p sut (bar) 2.4 1.0 5.0 1.10 0.19 .07 1.1 2.5

Phn Hi 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0

L.Lng K.L (tonne/h)

1922.5 37.35 2.54 20.84 6.63 11.59 0.37 6.26

L.Lng Mol(kmol/h)

86449.6 1335.4 141.0 1156.43 93.19 199.66 6.34 86.85

L.Lng mol hp thnh

Propylene - 14.7 - - - - - -

Nitrogen - 1056.7 - - - - - -

Oxygen

- 51.9 - - - - - -

Carbon Dioxide - 60.5 - - - - - -

Nc 80026.7 150.2 141.0 1156.4 0.30 9.45 0.30 -

Axit Acetic 421.1 0.46 - 0.03 6.08 189.9 6.03 0.05

Axit Acrylic 6001.8 0.98 - - 86.81 0.31 0.01 86.80

16

Bng 2: Cc Dng chy thit yu

* can thip hay v qu nhit b trao i

Tn Dng cw n E-301 cw n E-302 lps n E-303* cw n E-304 cw toz E-305

Nhit C 32 32 160 32 32

p sut bar 4.00 4.00 10.00 4.00 4.00

Lu Lng tnh bng 103kg/h

1,995 1,923 2.190 235.4 16.70

17

Gn y ba nh sn xut ln trn th gii trong cc lnh vc sn xut ha cht, sn phm nng ha v enzym cng nghip mi y lin kt vi nhau thng mi ha qu trnh sn xut axit acrylic theo phng php sinh hc.

Trong mt tuyn b chung, Tp on BASF cng vi cc cng ty Cargill v Novozymes cho bit th trng ch ca h l diaper v cc sn phm tng t da trn cc polyme siu hp th, c ch to t axit acrylic. Axit acrylic cng c s dng sn xut cc cht ty ra, sn v cc cht kt dnh. Theo ba nh sn xut ni trn, th trng axit acrylic ton cu t khi lng khong 4,5 triu tn vi gi tr 11 t USD mi nm.

BASF l nh sn xut axit acrylic ln nht th gii. Tp on ny sn xut monome then cht cho sn xut axit acrylic bng cch oxy ha propylen thu c khi tinh ch du m. Trong khi , t nm 2008 cc cng ty Cargill v Novozymes nghin cu v trin khai cng ngh sn xut axit acrylic i t nguyn liu c th ti to.

Trc y, Novozymes v Cargill hp tc vi nhau v tp trung vo cc vi khun bin i gen chuyn i ng mt cch hiu qu thnh axit 3-hydroxypropionic (3-HP), mt tin cht khc sn xut axit acrylic. Vai tr ca BASF trong s hp tc m rng gia 3 nh sn xut s l pht trin qu trnh chuyn ha 3-HP thnh axit acrylic.

Quy trnh ny hin cng ang c Cng ty OPX Biotechnologies - mt cng ty cng ngh sinh hc mi thnh lp - theo ui. OPX Biotechnologies hp tc vi Tp on Dow Chemical chuyn ha 3-HP thnh axit acrylic theo cng ngh kh nc c xc tc. Thng 4/2012, OPX Biotechnologies thng bo nng cp sn xut 3-HP, s dng thit b ln men 3.000 lt do Vin Cng ngh sinh hc Michigan vn hnh. Trong khi , Cng ty Myriant Technologies (ni ting vi cc k hoch thng mi ha axit acrylic sn xut t nhin liu sinh hc), cho bit s sn xut axit acrylic sinh hc vi cng sut tng t trong nm nay.

Theo cc chuyn gia trong ngnh, do hot tnh phn ng cao ca axit acrylic nn vic sn xut axit ny kh kh khn. V nguyn l, sn xut axit acrylic ch i hi mt bc kh nc. Tuy nhin, cc nh sn xut thng gp phi cc vn trong qu trnh tinh ch, khi cc polyme c th hnh thnh trn thit b. V vy, vic cc cng ty ln lin kt vi nhau c th mang li nhng t ph ln, nht l khi nhng i tc c th mang li nhng li ch tim nng quan trng.

18

3. BO QUN, LU TR & X L

ngn chn trng hp, axit acrylic bng lun lun phi c c lu tr di iu ha khng kh v khng bao gi di kh tr. S hin din ca oxy cn thit cho vic n nh hot ng hiu qu. Axit acrylic bng phi lu tr t 15 n 25 C. Di nhng iu kin ny , mt s n nh lu tr d kin ko di khong 1 nm . Tuy nhin , axit diacrylic c hnh thnh trong qu trnh lu tr l khng th c ngn nga bng bt k cht ph gia ha hc no. Diacrylicaxit c th nh hng n hiu sut ca axit acrylic trong mt s ng dng . gim thiu nguy c lu tr qu mc, cc th tc lu tr nn thc hin theo ng nguyn tc " u tin - -u tin - ra ". lu tr m rngthi gian trn bn tun, bn nn b sung lng oxy ha tan hp l.

ngn chn vic ng cng, nhit ca axit acrylic nn khng bao gi c di 15 C. R ng khng ng cch c th dn n trng hp ha cng bc, Khng c c gng lm tan axit acrylic ng lnh hoc ng lnh mt phn khi cha c yu cu.

19

PHN III: VN CON NGI,

MI TRNG

-------******-------

1. NH HNG CON NGI

Axit acrylic l mt ha cht c hi cn c x l cn thn. Ngng mi thp phc v nh l mt ti sn cnh bo tt. Ngng mi thp cng l mt tn hiu ng bo ng. nh Gi nh Hng Kt qu

c tnh cp tnh bng ming/ht/da

Da trn nghin cu ng vt, axit acrylic c xem c hi nu nut hoc ht. Nut c th dn n kch ng tiu ha nng hoc lot v bng ca ming v c hng. Tip xc vi da c th dn n kch ng da hoc vt bng. nng hi t c nhit phng khng ngay lp tc nguy him, tuy nhin, tip xc ca mt gi hoc nhiu hnc th dn n chn thng hoc t vong.

Kch thch / n mn

Da / mt / ng h hp

Gy kch ng da nghim trng vi triu chng ,sung, bng ha hc v ph hy m. Cht lng c th gy kh chu nghim trng v thit hi nghim trng cho mt, thm ch m la. Hi hay sng gy kh chu, nh hng nghim trng n ng h hp

Ng c sau khi tip xc lp i lp li qua ming / ht / da

Tc dng ch yu l kch ng ti ch.kch thch ph thuc vo nng ca ccsn phm v thi gian tip xc. Khng gy ra c tnh i vi c quan ni tng sau khi tip xc lp li trong cc nghin cu trn ng vt

t bin gen v nhim sc th

Da trn cc d liu th nghim c sn, khng d kin gy ra hiu ng di truyn.

Gy Ung Th Khng gy ra cc khi u trong cc nghin cu lu di trn ng vt

c Tnh nh hng hoc thit hi cho c quan sinh sn trong ng vt th nghim.

20

T ch WorkSafe- c khuyn co mt thi gian 8 gi trng trung bnh (TWA) gii hn tip xc ca 2 ppm ( 5,9 mg/m3).

2. NH HNG MI TRNG

Do s phn hy ca axit acrylic trong mi trng v c tnh cp tnh va phi ca n, ha cht ny s khng c xem l s gy c cho ng vt thy sn trn mt t hoc cc cp thng c tm thy trong mi trng. Nh l mt hp cht hu c d bay hi ( VOC ), axit acrylic c th ng gp vo s hnh thnh ca sng khi quang ha trong s hin din ca cc cht c trc khc .Tc dng c hi cp tnh c th bao gm ci cht ca ng vt , chim, c hoc tc tng trng thp trong cc nh my .Hiu ng Cp tnh ( ngn hn) c nhn thy 2-4 ngy sau khi ng vt hoc thc vt tip xc vi mt ha cht c hi. Axit acrylic c c tnh cp tnh nh n i sng thy sinh v c tnh cao vi cc loi chim . D liu c sn khng y nh gi hoc d on nhng tc ng ngn hn ca axit acrylic cho cc nh my hoc ng vt trn cn . c hi (di hn) tc dng lu di c th bao gm tui th rt ngn , cc vn sinh sn, kh nng sinh sn thp hn, v nhng thay i v ngoi hnh hay hnh vi . Tc dng lu di c th c nhn thy lu sau khi tip xc u tin (s) vi mt ha cht c hi.

nh Gi nh Hng Kt qu

c tnh Ngun nc Cp tnh: rt c hi; mn tnh: c hi

V ha tan vo nc v p sut hi nht (khong 90 %) axit acrylic pht hnh cho mi trng d kin s kt thc trong nc . Ha cht c th c loi b khi bu khng kh trong ma. Nu pht hnh cho t ha cht b tan vo nc ngm hoc nc b mt. Lc xung t hay nc b mt l con ng chnh ca loi b cc axit acrylic t t do tan trong nc cao ca ha hc v p sut hi thp . Tch ly sinh hc ca axit acrylic c th s khng c ngha .

Axit acrylic tn ti trong bu khng kh trong giai on kh . Qu trnh gim kh ch o cho axit acrylic l do phn ng vi cc gc hydroxyl . Da trn phn ng ny, su tn ti trong kh quyn ch c cho l mt vi ngy. Trong axit acrylic khng kh phn ng vi ozone sn xut axit glyoxylic v acid formic. Lng ng t v kh ca axit acrylic kh cng c th quan trng .Acid acrylic l phn hy sinh hc. N cng b ph hy bi nh sng mt tri trong t nc mt v nc. N l hi dai dng trong nc nhng s lm suy gim trong vng mt vi tun hoc vi thng.

3. NGUN PHT THI

3.1. T cng nghip

21

Axit acrylic c th c pht hnh trong nc thi v pht thi trong sn xut v s dng n. Axit acrylic c pht ra t sn xut ca axit acrylic v acrylate. Cc ngun vn phng phm, nh sn xut tn la dn ng v xe khng gian, v linh kin in t v ph kin.Cc ngun khc, v ngun tin cng nghip bao gm trong d liu pht thi khuch tn. Kh thi axit acrylic c th xy ra t cc cht nh bng, sn, cht ph, tm thm, keo dn, nha, dt may, giy v kt thc. Axit acrylic c s dng lm thuc tr su.

3.2. T t nhin

Axit acrylic cng c sn xut t nhin ca mt s loi to v c tm thy trong dch

d c ca cu.

3.3. Sn phm tiu dng

Sn phm c cha axit acrylic bao gm nh bng, sn, cht ph, tm thm, keo dn, nha, dt may, giy v giy.

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TI LIU THAM KHO 1. http://www.arkema.com/export/shared/.content/media/downloads/socialresponsability

/safety-summuries/safety-summaries-acrylics-acrylic-acid-2012-08-30.pdf 2. http://en.wikipedia.org/wiki/Acrylic_acid 3. http://www.npi.gov.au/resource/acrylic-acid 4. http://www.che.cemr.wvu.edu/publications/projects/acrylic/acrylic-d.PDF 5. http://digitallibrary.srmuniv.ac.in/dspace/bitstream/123456789/1846/1/4001.pdf 6. http://www.chemicalbook.com/ChemicalProductProperty_EN_CB7307797.htm 7. http://www.vinachem.com.vn/PortletBlank.aspx/5D5EA4308B2D411781E15608961

6C5A4/View/So-92012/Cac_cong_ty_lon_tren_the_gioi_lien_ket_san_xuat_axit_acrylic_theo_cong_nghe_sinh_hoc/?print=1650073955 V mt s ti liu khc

M UTNG QUAN V AXIT ACRYLICPHN I: TN GI, CU TO, TNH CHT

-------******-------1.TN GI2.CU TO3.TNH CHT VT L4.TNH CHT HA HC4.1 Phn ng ca nhm vinyl4.2 Phn ng ca nhm carboxyl

PHN II:NG DNG V PHNG PHP SN XUT1. NG DNG 1.1 S dng vi vai tr l ha cht trung gian1.2 S dng vi vai tr l monome trong phn ng trng hp

2. PHNG PHP SN XUT3. BO QUN, LU TR & X L

PHN III: VN CON NGI, MI TRNG1. NH HNG CON NGI2. NH HNG MI TRNG3. NGUN PHT THI3.1. T cng nghip3.2. T t nhin3.3. Sn phm tiu dng

TI LIU THAM KHO