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HOA CHE BIlN D A U KHI M6 pi iong vd nghien cau cong ngiie son xudt EDC va VCM ta ethylene KS Trin Ng9C Cdng, PGS TS Nguyin Thi Minh H\i PGS TS Ph^m Thanh HuyIn Vifn Ky thudt Hda ht;>c Dgt hgc Bdch kh[.]
HOA - CHE BIlN D A U KHI M6 pi-iong vd nghien cau cong ngiie son xudt EDC va VCM ta ethylene KS Trin Ng9C Cdng, PGS.TS Nguyin Thi Minh H\i PGS.TS Ph^m Thanh HuyIn Vifn Ky thudt Hda ht;>c - Dgt hgc Bdch khoa Hd N^i Tdm t i t Phucmg phdp thich hgp disdn xudt EDC vd VCM tCf ethylene Id phUcfngphdp Ilin hgp hda, oxy hdaethylem vd cracking EDC Bdi bdo sijfdgng phdm mim bdn quyin Unlsim Design R400 (Honeywell - UOP) md phdng qud MnJ sdn xudt EDC/VChA vdi cdng sudt thiit ki330.000 tdn EDC/ndm vd 400.000 tdn VCM/ndm Cdc thdng sdkyUiuAt, ( M kiin vdn hdnh tdi tiu eda thiit bf cdng dugc nghiin cdu vd ddnh gid Gidi thidu b i n q u y i n cdng ngh$ d i u c6 Uu d i l m v i nhupc di^rr ridng Khi t h i l t k l , v l m i t cdng n g h | cic cdng ty tUv^r Tip d o i n DIu khiViet Nam (Petrovietnam) v i cic ddi t i e da ky hgp dong liln doanh hpp t i e d i u tu dy i n Td hpp Hda d i u Long Son (nay gpi l i To hpp Hda d i u m i l n Nam) Ngudn nguyen lieu dy i n gdm propane, naphta Cdng ty Qatar International Petroleum Marketing (TASWEEQ) cung d p v i ethane Tong cdng ty Khi Vidt Nam - PVGas (thudc Petrovietnam) tach tUNha m i y GPP2 vdi ngudn tU b l Nam Cdn Son (ham lupng ethane 7%) Dy kiln, mdi nam Td hpp se eung cap 1,45 tridu t i n hat nhua polyethylene (PE) v i polypropylen (PP), 330.000 tan EDC, 400.000 t i n VCM iam nguyen lieu cho sin x u l t nhya polyvinyl clorua (PVC) v i 840.000 t i n hda chit ca b i n khic phuc vu nganh cdng nghiep hda d i u v i hda chat[1] v i t h i l t k l hidn sd dung cic p h i n m i m md ph6ng (nhu: Hysys, Proll, Unlsim ) d4 md phdng v i tinh toin, Bii b i o sd dyng p h i n m i m b i n quyen Untsim Design R400 (Honeyw/ell - UOP) md phdng cdng nghd sin xuat EDC/VCM vdi cdng suit t h i l t k l 330.000 t i n EDC/nam va 400.000 t i n VCM/nim Oanh g i i , lUa chon cdng nghd s i n x u l t EDC/VCM 2.1 Phuang phdp sdn xudt EDC [2-5] Trong edng nghidp, vide sin x u l t EDC vdi ngti^ nguydn lidu d i u v i o t i ethylene dugc thuc hidn bing phuang p h i p : d o hda true t i l p hoic oxy cio hda Q u i trinh d o hda ethylene s i n x u l t EDC ed cong Trong q u i trinh x i y dyng dU i n , viec d i n h g i i , lya nghe chinh: d o hda nhidt dd t h i p (LTC) v i d o hda nhift chpn cdng nghd sin x u l t r l t quan trpng Hidn nay, cd dd cao (HTC) Vdi cdng n g h | LTC sin p h i m thu diiocia nhilu n h i b i n q u y i n cdng nghd sin x u i t EDC v i VCM hdn hpp Idng Trong t h i l t bj p h i n dng ehinh nlgt nhU: Ineos Vinyls, Oxy Vinyls, Vinnolit v l Mitsui Mdi dd p h i n dng khoing 50 - 70* C.HjCI + 3HCI V«l E = 93.600 kJ/kgmol vS 1= SO"C, R = 8.314J/mol ld\ E = 37.800kJ/kmol va T,,= 150°C : , H , + HCI + » O j - > V C M + H,0 Vfll E = 93.600kJ/kgmol vJT^= 150»C R = 8.314J/mol k „ = 3,00e " exp (-E/R x (l/T-l/TJ) c,= 1,2 X ' exp(-E/R X (l/T-l/TJ) : , H , +20; -> 2C0 + 2H,0 CICH,-CH,CI + 2HCI-> C,CI, (TETRACLOETHYLENE) + 3H, c, = 1,4 X 10' exp(-E/R X (1 /T-1 /TJ) ,0 (17) k „ = 5,00e-" exp(-E/R x (l/T-l/TJ) (13) Trong qua trinii mo phong, dung t h i l t bi day ly tudng PFR de m6 ph6ng thiet bj phan iJng d o hoa c6 tuan hoan lai dong EDC long lam m6i trudng phSn dng Nhiet phan dng tach the hl&n bSng ddng nhiet luong khdi thiet bj Qua trinh d o hda the hien thong qua cac phudng trinh ddng hoc cCia cac phan dng Cac thdng sd nhiet dd, ap suat sddung qu^ trlnh md phdng thiet bj hda tn/c tiep dUdc tham kh^o td cac cdng bd cua cac nha ban quyen cdng ngh^ [7-11] Phan dng tien hanh dT = 80 -120''C va ap suit P = 100 - 250kPa vdi t9 le nguyen lieu ethylene/do 111 / I , ty le ethylene/EDC t u a n h o a n l a / l Thiet b| phSn dng oxy d o hda xdc tac tang sol dddc md phdng bdi thiet bi d i y ly tddng PFR vdi T = 200 - 230''C va P = 200 - 500 kPa Nhiet phin dng tach de san xult C,H,CI (8) k„=l,00e-"'exp(-E/Rx(l/T-1/rj) Vdi E = 37.800kJ/kmol v l T^= 150°C C,H, -1- 4HCI + 1,50, ^ C,H,CI, (1,1,2,2-TETRACLOETAN) -l-3H,0 (9) (10) CICH,-CH,CI -> C,H,CI -1- 3HCI (19) CICH,-CH,CI -1- HCI -> C,H,CI, (TEC) + H, (20) k,„=l,OOe-"exp(-E/Rx(l/r-l/rj) k,„= 10-'exp(-E/Rx(1/T-l/TJ) Vdi E = 93.600kJ/kgmol va T„= 150°C, R = 8.314J/mol Vdi E = 37.800kJ/kmol v l T^= 150°C (11) k,, = 2,5 X 10-* exp(-E/R x (l/T-l/TJ) Vdl E = 37.800kJ/kmol va T„= 150"C Qua trlnh cracking EDC [13,151 (12) k , j = 10'"exp(-E/RT) vdi E = 2,4267 X 10=kJ/kmol k„|, = 0,3 X10» exp(-l 84100/RT) C,HjCI->C,H,-fHCI Vdl E = 93.600kJ/kgmol V|T^= 150°C, R = 8314J/mol Vdl E = 93.600 kJ/kgmol v l T,= 150"C R = 8.314J/mol Vdi E = 37.800kJ/kmol va T^= 150''C CICH,-CH,CI->C,H,CI(VCM) + H a (8) k „ = 3,00e-" exp (-E/R x (1 /T-I/TJ) k,= 1,2 X ' exp(-E/R x (l/T-l/TJ) C,H„-fHa-H4 0,->VCM-l-H,0 CICH,-CH,CI + 2HCI-> C,CI, (TETRACLOETHYLENE) + 3H, k,= 1,4 X 10-' exp(-E/Rx (l/T-l/TJ) C,H,-l-20,->2CO-l-2H,0 (17) k „ = 5,00e-" exp(-E/R x (l/T-l/TJ) (13) Trong q u i trinh md phdng, dung thiet bj day ly tddng PFR de md phdng thiet bj phin dng d o hda cd tuan hoan lai ddng EDC Idng Ilm mdi trddng phin dng Nhiet phin dng tach the hien b i n g ddng nhiet Iddng khdi thiet bj Qui trinh d o hda t h ^ hien thdng qua cic phddng trinh dpng hoc cua cac p h i n dng Cac thdng so nhiet do, ap suit sddung qua trlnh md phdng thiet bj hda trdctl^p dddc tham khao t d cic cdng bo cua cic n h i b i n quyen cong nghe [7 -11] Phin dng tien hlnh dT = 80 -120°C v l I p suat P = 100 - 250kPa vdi ty le nguyen lieu ethylene/do la 1/1, ty l# ethylene/EDC t u i n hoan la 7/1 Thiet bj phan dng oxy d o hda xuc t i c tang sdi ddpc md phdng bdi thiet bj day ly tddng PFR vdi T = 200 - 230°C v l P = 200 - 500 kPa Nhi^t phin ijfng t i c h de sin xult k,„ = 0,5 X " exp(-2S8700/RT) hoi nddc the hien bdi ddng nhiet khdi thiet bj Nguyen lieu v i o thiet bj phin dng phu thupc vao Iddng HCI t u i n k „ j = 0,37 X 10» exp (-167360/RT) CICH,-CH,CI^C,H„-l-CI, (14) k„=10"exp(-301250/RT) C,H,->C,H,-1-H, '^15 ~ "^is/ 15b hoan t d q u I trlnh cracking EDC.T;^ le HCI/ethylene la 1,8 v l O/ethylene la 0,45 Qua trlnh sCf dting oxy tinh khiet vi vay dung dd ethylene, ethylene d d ddpc t i c h va tuan hoan (15) lal thl^t bl phin dng Q u i trlnh cracking EDC sin xuat VCM tien hanh d pha khdng cd xuc t i c vdl nhiet dp va I p suat cao (T = 530°C, k „ , = 0,1 X 10'*exp(-343090/RT) P - 2.025kPa) Ddng nguyen lieu v i o ban d i u ddpc trao doi k , „ = 0,8 X 10» exp(-158990/RT) nhiet vdi ddng khdi thiet bj phan dng nham t i n dung 41 a H O A - C H ^ BIEN D A U KHI Bdng Cdc cdng nghi idn xudt EDC vd VCM trin thi gidi hifn D»c diim ; T i n cdng ty DOW Chemical ' Shin-Etsu Chemical • INEOS Group Ltd Oxy Chemical ' Vinnolit Gmbh & Co KG Solvay (Solvin) f Mitsui Chemical Cdng ngh6 Cdng n g h f d o hda HTC HTC DOW ShinEstu Cdng n g h f oxy d o hda Xilc tac c6dinh, sddung khdng ' XOctaccddjnh.sddyngoxyhoSckhdngkhf _ ^ IneosVinyls Oxy-vinyls Vinnolit HTCviLTC HTC HTC : Xuc t i c cddjnh, sddung oxy Xuc tdc t i n g sdi, ho^c xiic t i c cfi djnh, sd dgng khdng Xuc t i c t i n g s6l, sddyng oxy _^ Solvin Mitsui HTC HTC Xiic the t i n g s6l I XOc tac t i n g s61, sddung oxy la hudng tdi cdng CjH^CIj-^CjHiCI-t HCI CjH, + Cl,->C2H.C ngh& oxy d o hda ethylene vdi thi^t Cio h6a l-ij -* Cracking EDC EDC bi xdc tac t i n g sdi Tinh ch^ VCM v i tac nhin oxy -J hda la oxy Q u i -J trinh d o hda sd dung cdng nghe T u i n hoan EDC Tinh ch« EDC CjH, cio hda nhiet dp t cao cd nhieu Uu diem hon -J - ' -" UA Oj -J M6 phdng cong CjH, + HCI + 'A Gi ^ CiHtCli + H,0 nghe b i n g phan Hinh SO khdi cdng nghf liin hgp sdn xudt EDC/VCM (11,12.16} mem Unisim Design R400 [2, 6, Bdng Thdng sd ddng nguyin liiu vd sdn phdm 11,13-15] Bii bio Nguyen lifu md Khi Sin ph Jm Luuluong(kg/h) 590.000 LUu luang (kg/h) EDC (thuong phim) 41.250 phdng cdng nghe Khi ethylene (do hda) 23.340 EDC (qua trinh cracking EDC) 41.010 sin xuat EDC/VCM Khiethylene (oxy-cio hda) 11.240 Khf HCI 29320 vdi cdng suit thiet Khioxy VCM (thuong phim) 50.000 6.433 ke la 330.000 tan EDC/nam va 400.000 tan VCM/nam theo sd khoi Hinhl CH^ = CHj + Clj -* CI-CHj-CH,-CI (1) k, = 11493exp(-17921/RT) Thdi gian lam viee cua nha may l i 8.000 gid/nim, thdng so ddng nguyen lieu v i san pham the hien d Bang Hd nhiet ddng sd dyng la SRK he nhiet ddng n i y thfch hop vdi cac qua trinh sddung hon hpp hydrocarbon va nude nhutrong qua trinh sin x u i t VCM Thiet bi d o hda CHj= CH, + 2CI, -*CHjCI-CHCIj + HCI (2) kj = 8,517x10' exp(-60515/RT) Q u i trinh oxyelo hda [15]: CjH^ + 2HCI + ViOj ^ C,H^CIj + H,0 & true tiep, oxy d o hda, cracking d\sgc md phdng b i n g thi^t bi p h i n dng ddng chiy deu (hay cdn goi la thiet bi day ly k3 = 10«exp(-40100/RT) tddng - PFR) CjH.CIj + HCI + !6 , -> CjHjClj (TEC) + H,0 Cic p h i n dng cua qua trinh duoc nhap v i o eie gdi p h i n dng eung vdi he so ddng hoe sau: k^= 10'"^exp(-128040/RT) CjH^ + 3Qj -* 2C0j + 2HjO Qui trinh d o hda [17]: k5=10ô''ằexp(-n2000/RT) 40 DAllKHl-Sd9/2012 M Đ PETROVIETNAM 4HCI + , ^ C l j + H p (6) C,H,-l-C,H,->C,H, (1,3 Butadlen) (16) k„ = k„/k„j k „ = 10' exp(5,4 - 30.238/(RT)) k,„ = 0,15 X 10' exp(-133890/RT) k,„ = exp(5,4 + 37.216/(RT)) CjH„ + 3HCI + , ^ C,H,CI, (TEC) + 2H,0 k,„ = 0,5 X 10" exp(-305430/RT) (7) CICHj-CHjCI -1- H, -> C,H,CI + HCI k,= 1,2 X ' exp(-E/R x (l/T-l/TJ) Vdi E = 37.800kJ/kmol v l \ = 1SO-C Vdi E = 93.600kJ/kgmol v l T_= 150»C, R = 8.314J/mol C,H, + HCI -> CjHjCI (8) C,H, + 4HCI + 1,50; ^ CjHjCI, (1,1,2,2-TETRACLOETAN) (9) + 3Hp k, = 1,2 X ' exp(-E/R x (1 /T-1 /TJ) CICH,-CH,CI ^ C,H,CI -1- 3HCI (19) Vdi E = 93.600 kJ/kgmol va T_= 150°C, R = 8.314J/mol (10) CICHj-CHjCI -I- HCI -> C,H,CI, (TEC) -I- H, (20) kj„= l,00e-"'exp(-E/Rx(l/T-1/TJ) k „ = ' exp(-E/R X (l/T-l/TJ) Vdi E = 93.600kJ/kgmol v l T„= 150°C, R = 8.314J/mol Vdl E = 37.800kJ/kmol v i T,,= 150°C (11) k„ = 2,5 X 10< exp(-E/Rx (1/r-1/rj) Vdl E = 37.800kj/kmol v l T = 150"C Qui trinh cracking EDC [13,15] (12) k„ = k„/k,„ k „ = 10'« exp(-E/RT) vdl E = 2,4267 X O=kj/kmol k, J, = 0,3 X10' exp(-l 841OO/RT) CjH,CI-»C,H,-l-HCI Vdi E = 93.600kJ/kgmol vlT„= 150°C R = 8.314J/mol k „ = 3,00e" exp (-E/Rx(l/T-l/TJ) Vdi E = 37.800kJ/kmdl v l T,= 150»C CICHj-CHjCI -• C,H,CI (VCM) + HCI (8) k „ = l,O0e'» exp (-E/R x (l/T-l/TJ) Vdi E = 37.800kJ/kmol v l T,,= 150°C C,H,-l-HCI+16 0j->VCM-l-H,0 CICHj-CHjCI + 2HCI-> C,CI, (TETRACLOETHYLENE) -13H, k, = 1,4 X ' exp(-E/R X (1 /T-1 /TJ) CjH, +20, ^ 2C0 -1- H p (17) k „ = 5,00e '• exp(-E/R x (l/T-l/TJ) (13) Trong qua trlnh md phdng, dung thl^t bi day ly tddng PFR de md phdng thl^t bi phin dng d o hda cd tuan holn lai ddng EDC Idng Ilm mdi trddng phin dng Nhiet phin dng tich the hien b i n g ddng nhl&t Iddng khdi thiet bl Qua trinh d o hda th^ hiln thdng qua cac phddng trinh dpng hoc cua cic phin dng Cac thdng sd nhi&t dd, I p suit sd dijng q u i trinh md phdng thiet bj d o hda trtfc tiep dddc tham khio td cic cdng bd cda cic n h i ban quyen cdng nghe [7 -111 Phin dng t i l n hlnh dT = 80 -120''C v l ap suit P = 100 - 250kPa vdi r? I I nguyen lidu ethylene/do I I / I , t^ le ethylene/EDC tuan hoan I I / Thiet bl p h i n dng oxy d o hda xdc t i c tang sdi dddc md phdng bdi t h i l t bi day ly tddng PFR vdl T = 200 - 230°C v l P = 200 - 500 kPa Nhiet phin dng t i c h de sin x u l t k,„=0,5 X 10"exp(-288700/RT) hdi nddc the hien bdi ddng nhilt khdi thiet bi Nguyin k „ j = 0,37 X 10" exp (-167360/RT) CICH,-CH,CI^C,H,-fCI, lieu v i o thiet bi p h i n dng phu thudc v i o luong HCI t u i n (14) holn t d q u I trlnh cracking EDC.TJ 11 HCI/ethylene II1,8 v l O/ethylene I I 0,45 Qui trinh sddung oxy tinh khiet vi vay k„=10"exp(-301250/RT) C , H , ^ C , H , + H, dCing dd ethylene, ethylene dd dddc t i c h va tuan holn (15) lai thiet b| phin dng Qui trlnh cracking EDC sin xuat VCM tien hanh pha k,j, = 0,l xl0"exp(-343090/RT) khdng cd xuc t i c vdl nhiet dd va l p suit cao (T= 530°C, k,„ = 0,8 x 10» exp(-l 58990/RT) nhilt vdi ddng khdi thiet bj phin dng nhim tan dijng P = 2.025kPa) Ddng nguyin lieu v i o ban dau dddc trao ddi OilUKHl-sd S^i2pi2 41 I H O A - C H E BIEN DAU KHI ^ • '^'t—-i ' I il " I ^7^ ,J^•4 j s •Wf r J ap sdn xudt EDC/VCM nhi&t v i di^u chlnh nhi^t dd Id p h i n dng Qui trinh ti^n hanh Id cracking nhi^t sd dung nhiSn li#u _ "|] n h i miy j "•• K^t q u i v i t h i o luin | H ^-^-^^^ — 4.1 Kit qud md phdng cdng nghi Sd md phdng cdng nghe lien hop sin xuat EDC/ VCM duoc trinh b i y H)nh Td ket q u i md phdng thu dUOc: + Bd chuyen hda eua q u i trinh d o hda la 99,27%, qua trinh oxy d o hda l i 99,6% va qua trinh cracking EDC sin xuat VCM ta 60% + EDC thuong p h i m cd dp tinh khiet dat 99,6% vdi lUu luong l i 41.210kg/h tUOng dUPng 330.000 t i n EDOnim VCM cd dd tinh khi^t dat 99,98% vdi lUu lUpng 50.050kg/h tuong duong vdi 400 000 tan VCM/nim + Th4 tich thiet bi p h i n dng elo hda true ti^p V = 200m'; chi^u d i i L = 28,29m; dddng kinh D = 3m + The tich thi^t bi p h i n dng oxy d o hda V = 170m^ chieu d i i L = 34,63m; dudng kinh D = 2,5m + The tieh t h i l t bj phin dng cracking EDC V=375m',chieudaiL=250mgdm191 doanong dudng kfnh D = 0,1m Hinh Anh hUdng ciia nhiet tdi dd chuyen hda phdn dng d hda vd nhift luang cdn tdch dng d o hda: t d d6 thj Hlnh n h i n t h i y nhiet dp ciia t h i l t bj p h i n dng t i n g t d 80 -120°C thi dd chuyin h6a cda p h i n dng d o hda g i i m t d 99,31 % xudng 99,24%.Bo chuyen hda g i i m p h i n dng tda nhi^t thuin Ipi t i l n h i n h d nhi^t dp t h i p Tuy nhien, nhdm t i e gti nhan t h i y chuyen hda eua p h i n dng chfnh giim khong nhieu Vl vay, ehpn d i l u kien lam viec toi Uu cho thift b! elo hda l i l a C C vl dd Idpng EDC lanh tuan hoan can ddng de dieu khien nhiet dp p h i n dng l i it hon,t6n 4.2 Nghien cdu ddnh gid thdng s6 Icy thudt thiet bi phdn dng chinh 4.2.1 Thiet bi hoa trUc tiep ethylene sdn xudt EDC Nhi§t dp tien hanh phin dng d o hda: Anh hudng eda nhiet dp tdi dd chuyen hda cua p h i n it nang luong cho bom v i cho q u i trinh lam lanh hdn (the hien qua su g i i m ddng nhiet Ql q u i trlnh mo phdng) Khi thay ddi i p suit, dp ehuyen hda cda phin itng chfnh hau nhu khdng thay ddi Tuy nhifin, chpn khoing lam viec thfch hop cua t h i l t bj d o hda l i 100 - 250kPavi PETROVIETNAM I lam vi&c d i p suit t h i p hon 10OkPa tren thUc te se khd j dieu khien, l i m viec d i p suit cao hon 250kPa thi ton k i m I chi phf cho q u i trinh ehe tao thiet bj, ^ -— 80 - , 4.2.2 Thiet bi oxy hda ethylene sdn xudt EDC I Nhiet dp tien h i n h p h i n dng oxy cio hda ethylene: s *" Khao s i t dp ehuyin hda eda p h i n dng chfnh nhiet dd l i m viec eua t h i l t bi p h i n dng t i n g td 200''C l l n 300°C (Hinh 5) nhin thay: Trong khoing t d 200 - 220''C, dp chuyin hda cda phin dng chfnh t i n g manh td95 - 99,4% nhiet dd t i n g lim tang toe dp p h i n dng dd tang dd chuyin hda Dp chuyen hda tdt n h i t nhidt dp khoing 220 - 230"C dd dat t r l n 99,5% theo HCI Khi nhi&t dd l i m viec cua thiet bj p h i n dng Idn hon 230°C thi dd chuyin hda phin dng chfnh g i i m nhiet dd cao thuc di'y q u i trinh oxy hda siu, dp chuyin hda eua p h i n dng phu t i n g T h i ^ b! h6a - i p suSt (kPa) Hinh Anh hudng cOa dp sudt den dd chuyin hda cda phdn d cio hda Anh hudng cda toe khdng gian t h i tfch khf; Tdc dp khdng gian the tich [GHSV (h'} - tdc dp ddng nguyen lieu (mVh)/thl tich t h i l t bi (m^)] l i dai lupng nghich d i o vdi thdi gian luu Khio sit tdc dp the tieh 40 - 130h' tUdng duong thdi gian luu thiet bj phin dng l i 31,6 g i i y d i n 10,5 giay {Hinh 6) Nhan thay ring tdc the tfch tang (tdc l i thdi gian luu thiet bj p h i n dng giim) dan tdi dp chuyen hda cua phin dng oxy elo hda g i i m Chpn tdc dp t h i tich l i 77h' (tuong dng vdi thdi gian luu l i 18 giiy) va dp chuyen hda phin dng chfnh la 99,56% vda dam b i o ehi tieu ky thuat cdng nghe, vda t i l t kiem dupe vat lieu che tao 4.2.3 Thiit bf cracking EDC sdn xudt VCfi/l 200 210 220 230 2A0 2S0 260 270 2B0 290 300 Thiet bj oxy hoa - nhiet ("C) Hinh Anh hudng cua nhiit den chuyen hoa cua phdn d oxy hda 101 100 ? 99 g 98 •—> \^- •S 9S O' 94 Ylu to i n h hudng Idn nhat d i n hieu suat qua trinh l i nhiet dp tien hanh cracking EDC Khao sat i n h hudng cda nhiet dp tdi dp chuyen hda cda phan dng (Hinh va 8) nhan t h i y : Trong khoing nhiet dp t d 480 - 530°C thi dp ehuyin 40 60 80 100 120 10 GHSVIh-') Hinh Anh hudng cda tdc dd thi tich den chuyen hda cua ph dng oxy hda hda phin dng cracking EDC tang theo nhi&t dp Tai T = 530°C dp ehuyen hda dat tren 70% Tuy nhiln, lam vi6c d nhiet dp cao, dp ehuyin hoa cda phan dng chfnh Idn, lupng VCM nhieu se thdc day q u i trinh tao coc lam g i i m hieu suat eua qua trinh Vi vay q u i trinh cracking dilu ehinh nhiet dp d i m b i o dp ehuyen hda phan dng l i 50 - 60%, luong EDC chua p h i n dng dugc t i c h dua sang khu vuc tinh c h l va cho tuan h o i n lai thiet bj phan dng, Thiet bi cracking - nhift dd {••€) dd higu suat cua q u i trinh la 95 - 98% Mat khac, viec Hinh Anh hudng cOa nhift dd tdi dd chuyen hda phdn dng cracking EDC tang nhiet dd qua trinh craking cdng dan tdl q u i trinh DAU KHi-sd 9/2012 43 HOA - CHE' BI6'N D A U KHI Utmman Encyclopedia of /nd| Chemistry 7"^ edition, Wiley 2004 j^ f Hydrocarbon processing 3/200i -m Y.Saeki,T.Emura Technicalprogil for PVC production Former Shin [ ^ Vinyl Corporation, Tokyo 105-0003, ^ 19/11/2001 I ThlA b| cracklno - nhift Hif (°C) INEOS Technologies Fact Hinh fl Anh hudng cdo nhift dfy tdi dfy chuyin hda phdn Ung phu qud Solutions for petrochemicals trlnh cracking EDC cracking siu tao nhilu sin p h i m phy (Hlnh 8) Do viy, chon nhi&t dd l i m viee eua t h i l t bj l i 520''C d i m b i o dd ehuyin hda eua p h i n dng 60% khoing cho phip Nhi&t dd n i y phu hpp vdi nhi|t dd iam vi|c td n h i ban fflei http://vi/wvi/.ineostechnologles.com/68-edc_technology benefits.htm ] http://www,oxy.com/OurBusinesses/Chem_ TechnologyLicenstng/Pages/Overview.aspx q u y i n Vinnolit [11] 10 http;//w/ww.oxy.eom/OurBusinesses/Chemn S Ket l u i n TechnologyLicensing/Pages/OxyChlorinatlonjspx 11 Uhde Vinyl chloride and polyvinyl chloi D i md phdng cdng nghe sin xuit ddng thdi EDC va VCM vdi cdng suat 330.000 t i n EDC/nim v i 400.000 tan VCM/nam b i n g phan mem Unisim Design R400 Nghiln cdu tdi Uu hda cie thdng sd ky thuat eua ba thiet bi p h i n dng chinh cho thiy: Thilt bj hda ethylene sin xuit EDC lam viee d T = 120"^ v i P = 10OkPa cho dp chuyen hda > 99% ddng thdi nang lupng t i l u tdn eho bom v i q u i trinh lam lanh thap Thiet bj oxy hda ethylene sin x u i t EDC l i m viee d T = 230°C vdi ty le nguyen lieu HCI/ethylene l i 1,8, oxy/ethylene la 0,45 Thdi gian luu l i 18 giiy tUOng dng vdi the tfch t h i l t bj l i 170m' Thilt bj cracking EDC sin x u i t VCM lam vile d T=520''C cho dp chuyin hda l i 60%, lupng sin p h i m phu thip 30/3/2009 12 http://vi/vi/w.shinetsu.nI/en/production-pRp pvc-plant 13 A.C.Dimian, CS.Bildea Chemical Process a Computer-Aided Case Studies Vflley-VCH 2008 14 United States Patent US 7,671,244 82 M for producing 1,2 - Dichloroethane by means of ^ chlorination 2/3/2010 / 15 A Lakshmanan, W.C Rooney, LT Biegler.jS^ study for reactor network synthesis: the vinyl chto process Computers and Chemical Engineering 1999; p 479-495 16 http-y/w/ww^.dow/.com/productsafety/finder/v htm 17 Joaqumn A Orejas Model evaluation for Tai lieu tham k h i o http://wvi/vi/.thesaigontimes.vn/Home/kinhdoanh/ dautu/71116/ Jeremy Dry, Bryce Lawson, Phuong Le, Israel Osisanya, Deepa Patel, Anecia Shelton Vinyl chloride production - Capstone design project spring 2003 Chemical Engineering-University of Oklahoma 2003 PhamThanh HuyIn, Nguyen Hdng Lien.Cdngng/il tong hgp hdu ca - hoa ddu N h i xuat b i n Khoa hpc Ky thuat 2006 44 DAUKHl-Sdg/2012 industrial process of directchlorination of ethylene i bubble-column reactor with external recirculation k Chemical Engineering Science 2001; 56: p 513 - 522 ... SfnplUm 590.000 EDC (thuong phim) EDC (qui trinh cracking EDC) Khi HCI *}^ 41^010 29J20 VCM (thuong phim) ^0.000 phdng edng nghe Khi ethylene (do h6a) 23.340 sin xult EDC/ VCM Khi ethylene (oxy-cio... hop axethylene va ethylene Sin xuat VCM bang phuong p h i p cracking EDC Sin xuat VCM bang phuang p h i p lidn hpp elo hda, oxy elo hda va cracking EDC Qua trinh sin xuat VCM cd sd dung acethylene... 590.000 Khi ethylene (do hda] sin xuat EDC/ VCM i Khi ethylene (oxy-do hda) vdi cdng suit thiet '' Khi oxy Sin phim Lini IdOng (kg/h) Lifu lutfng (kg/l''l EDC (thddng phSmT _ 41.250 23.340 EDC (qui