Hom polyethylene PE ntau lawm tshuab

Nyob rau hauv cov ntau lawm ntawm txhaj qhov chaw, Nws yog inevitable siv yas nyoos nyoos. Hnub no peb yuav piav qhov ntau lawm ntawm pe, neeg ntiaj teb loj 11 hom polyethylene PE ntau lawm tshuab

Tam sim no, Muaj ntau tuam txhab uas muag nrog polyethylene tshuab nyob hauv lub ntiaj teb, Nrog 7 Tuam txhab uas muag nrog LDPE tshuab, 10 Tuam txhab uas muag nrog LDPE thiab full-density tshuab, Thiab 12 Tuam txhab uas muag nrog HDPE tshuab. Ntawm tus foupective ntawm kev loj hlob tshuab, High-pressure ntau lawm ntawm LDPE yog txoj kev mature tshaj plaws nyob rau hauv cov ntau lawm ntawm PE resin. Ob txoj kev kettle thiab cov tubular txoj kev muaj matured. Tam sim no, Cov ob ntau lawm tshuab coexist. Tsim lub teb chaws feem ntau tau txais cov tubular ntau lawm. Tsis tas li ntawd, Txawv teb chaws tuam txhab uas muag feem ntau siv tsawg-kub-kev catalysts los pib polymerization lub nruab, uas yuav txo tau qhov kub thiab siab. Lub siab-siab ntau lawm ntawm LDPE yuav tsim nyob rau hauv cov kev taw qhia loj-teev thiab tubular ntau lawm. Lub siab-siab ntau lawm ntawm HDPE thiab LLDPE mas siv titanium thiab txoj catalysts. Teb chaws Europe thiab Nyiajpoom teb feem coob siv Ziegler-hom titanium catalysts, Thaum lub teb chaws As Mes Lis Kas feem ntau siv txoj catalysts. Tam sim no, muaj 11 Hom polyethylene ntau lawm tshuab uas mas siv nyob hauv lub ntiaj teb. Kev taw qhia yog raws li nram no:
(1) Basel tuam txhab roj theem Spherilene txheej txheem

Qhov ntau lawm ntawm linear PE yuav ntau yam los ntawm cov density PE (ULDPE) LLDPE, THIAB RAWS LI HDPE. De

Ziegler-Natta hom titanium kuas catalyst thiab Spherilene roj theem txheej txheem siv. Nyob rau hauv lub teeb inert hydrocarbons, Tus catalyst thiab pub yog pre-polymerized hauv bulk ua ntej, thiab tej yam mob uas muaj tshwm sim nyob rau hauv cov mob me me. Tus slurry nkag mus rau thawj roj theem reactor, siv cov roj loop txias los dissipate tshav kub kub, Thiab ces nkag mus rau ob roj theem reactors. Cov density ntawm cov khoom uas ua ntau yam los ntawm ULDPE (tsawg tshaj 900kg/m3) HDPE (ntau dua 960 kg/m3), thiab tus melt ntws tus nqi (MFR) ntau yam los ntawm ntau yam 0.01 mus rau 100. Vim yog siv ob roj theem reactors, Nws yuav ua tau bimodal thiab tshwj xeeb polymers. Yam. Txij thaum lub Spheri Lene txheej txheem yog nkag tau rau lub lag luam hauv 1992, Nws tam sim no muaj ib tug ntau lawm peev xwm ntawm 1.8 lab tons ib xyoo. Rau ntau lawm chav tsev (1 nyob tebchaws Asmesliskas (United States), 2 Kaus lim qab teb, 2 hauv tebchaws Brazil, Thiab 1 Is Nrias teb) tau muab tso rau hauv lub lag luam, thiab lwm ob (1 Txhua yam nyob rau khej thiab Iran) siv tau. Tus single-line ntau lawm peev xwm yuav mus txog 100,000 tons ib chav tsev. Ib 300,000 tons ib xyoos twg. tam sim no, Tuam Tshoj tsis muaj ntau lawm chaw rau hom tshuab.
(2)Borealis Bastar process

Beixing PE txheej txheem yuav ua bimodal thiab unimodal LLDPE, MDPE (nruab nrab density PE) thiab HDPE. Siv

Koob loop, roj theem uas tsis muaj siab reactor. Cov density ntawm PE yog 918-970kg/m3, thiab tus melt Index yog 0.1-100. Adopt Z-N catalyst los yog Ssc (ib qho chaw ua si) catalyst.

Tus catalyst thiab propane diluent yog sib xyaw rau hauv lub compact pre-polymerization reactor, thiab tus nqi catalyst,

Ethylene, comonomer thiab hydrogen. Tus pre-polymerized slurry nkag mus rau ob loj slurry loop reactor thiab koomtxoos hauv supercritical mob (75-100C, 5. 5-6.5 MPa). Muaj peev xwm ua tau bimodal khoom. Tus flashed polymer ntxiv xa mus rau lub txaj fluidized roj reactor tsis ntxiv catalysts tshiab, thiab homopolymers yuav tau txais. Cov roj theem tshuaj tiv thaiv yog: 75-100C, 2. 0MPa. Thawj txheej industrial khoom yog muab tso rau hauv lub lag luam hauv Finland 1995, thiab ob kab ntau lawm (450,000 tons/xyoo bimodal khoom) Ua nyob rau hauv Abu Dhabi tau muab tso rau hauv lub lag luam nyob rau hauv ib nrab hnub thib ob ntawm 2001. Tus fifth txheej ntawm 250,000 tons/xyoo (Ob txheej bimodal) Kuj ua nyob rau hauv Suav teb Shanghai Petrochemical tuam txhab, Qhov lub teb chaws Suav coob PE ntaus ntawv. Qhov ntau tsim peev xwm ntawm no ib kab ntawm txoj kev no yuav mus txog 300,000 tons/xyoo.
(3) BP cov roj theem Innovene txheej txheem

Nws yuav ua tau LLDPE thiab HDPE khoom, siv Z-N titanium kuas, chromium kuas los yog metallocene catalysts. Chrome

Cov tshuaj tus neeg saib xyuas yuav ua tau cov khoom uas muaj ib tug molecular luj tis, thiab cov Ziegler-Natta (Z-N-N) catalyst yuav ua tau khoom uas muaj ib tug nqaim molecular luj tis. Cov kev khiav hauj lwm rau cov neeg mob ntawm lub txaj reactor yog so, Thaum 75-100C thiab 2.0MPa. Tiam sisene los yog hexene yuav siv tau ua ib comonomer. 30 Txheej ntau lawm kab muaj tau muab tso rau hauv lub lag luam, tsim los yog siv. Lub peev xwm ntau yam los ntawm 50,000 mus rau 350,000 tons ib xyoos twg.

Technip koom tes nrog BP nyob teb chaws Europe, Tus soviet npe, South America, Tuam Tshoj thiab Malaysia
Kev them nyiaj yug BP innovene txheej txheem ua polyethylene. BP tus Innovene PE peev xwm muaj tam sim no tshaj 8 lab tons ib xyoo, Xws li PE li nyob bandar Iman hauv Iran, Grangermus hauv Scotland, Merak hauv Indonesia, Thiab Keltih hauv Malaysia. Tus expansion thib ob expansion ntawm lub LLDPE/HDPE cog ntawm lub teb chaws Suav Dushanzi Petrochemical tuam txhab kuj tau txais txoj kev Innovene, ua los ntawm kev ua kom 120,000 tons/xyoo rau 200,000 tons/xyoo. SECCO tus tshiab 600,000 tons ntawm polyethylene yuav siv tshuab no.
(4) ExxonMobil tus tubular thiab kettle cov tshuaj tiv thaiv

High-pressure dawb radical txheej txheem siv los ua LDPE homopolymer thiab EVA (ethylene vinyl acetate) copolymer.

Loj-teev tubular reactors (peev xwm 130 mus rau 350,000 tons/xyoo) thiab stirred tank reactors (peev xwm txog 100,000 tons/xyoo) siv. Qhov kev khiav hauj lwm siab ntawm lub raj reactor yog siab li 300MPa, thiab lub tank reactor yog tsawg tshaj 200MPa. Qhov kom zoo dua ntawm txoj kev high-pressure yog kom shorten lub sij hawm nyob, Thiab tib reactor yuav tau switched los ua homopolymers copolymers. Lub density ntawm homopolymer polymer yog 912-935 kg/m3, thiab tus melt Index yog 0.2-150. Cov ntsiab lus vinyl acetate ntsiab lus yuav siab li siab 30%. Cov khoom noj thiab zog noj ib ton ntawm polymer ntau lawm yog: 1.008 tons ntawm ethylene, 800kwj dej, 0.35t steam, thiab 5m3 ntawm nitrogen. 23 Txheej txheem high-pressure reactors muaj tau muab tso rau hauv lub lag luam, Muaj ib tug ntau lawm peev xwm ntawm 1.7 lab tons ib xyoo. Ntau lawm homopolymers thiab ntau copolymers. Tam sim no, Yanshan tus tshiab khiv ua 200,000-ton/xyoo LDPE cog adopts lub tuam txhab tube txoj kev tshuab.
（5) Mitsui Chemicals low-pressure slurry Cx txheej txheem

Nws yuav ua tau HDPE THIAB MDPE, Siv txoj kev uas tsis muaj siab slurry txoj kev CX. Yuav ua bimodal molecular luj tis

Cov khoom. Ethylene, hydrogen, comonomer thiab ultra-high kev catalyst nkag mus rau lub reactor, thiab polymerization cov tshuaj tiv thaiv tshwm sim nyob rau hauv lub xeev slurry. Cov cuab yeej polymer tswj lawv yuav tswj tau cov khoom zoo, thiab cov ultra-high catalyst tsis yuav tsum raug tshem tawm ntawm cov khoom. 90% Cov solvent muab cais los ntawm tus slurry yuav ncaj qha recycled rau lub reactor tsis muaj kev kho. Nws yuav ua tau cov khoom uas nqaim los yog dav molecular luj tis nrog ib density ntawm 930-970 kg/m3 thiab ib melt Index ntawm 0.01-50. Cov khoom noj khoom haus thiab zog noj ib ton ntawm cov khoom uas ua yog: 1010 kg ntawm ethylene thiab comonomers, 305 kWh of hluav taws xob, 340 ncu, 190 txias, Thiab 30 m3 ntawm nitrogen. 35 Ntau lawm kab muaj tau muab tso rau hauv lub lag luam los yog raws li siv, muaj peev xwm tag nrho cov peev xwm 3.6 lab tons ib xyoo. Tam sim no, Enterprises siv no tshuab mas muaj xws li cov 220,000-ton cog rau Daqing, Lub 140,000-ton cog hauv Yangtze thiab Yanshan, thiab cov 70,000-ton cog rau Lanzhou.
(6) Chevron-Philips coj loop reactor LPE txheej txheem

Phillips Petroleum tuam txhab LPE txheej txheem siv los ua linear polyethylene (LPE). Feem ntau catalyst

Cov tshuaj yog polymerized hauv lub loop reactor thiab cov isobutane slurry. Khoom melt Index thiab molecular luj tis yuav tau kho thiab tshuaj los ntawm catalyst, kev khiav hauj lwm rau cov neeg mob thiab hydrogen. Tus comonomer yuav butene-1, hexene-1, octene-1 thiab zoo li. Qhov kev ua catalyst ua rau nws ruaj tshem cov catalyst, thiab tsis muaj paraffin los yog lwm yam khoom uas tsim thaum polymerization, Uas heev txo qhov chaw muaj kuab paug. Ethylene, isobutane, comonomer thiab catalyst continuously nkag mus rau lub loop reactor thiab hnov mob ntawm ib kub tsawg tshaj 100C thiab txog 4.0 MPa, thiab qhov chaw nyob yog hais txog 1 Teev. Tus single-pass conversion tus nqi ntawm ethylene tshaj 97%. Cov khoom noj khoom haus thiab zog noj ib ton ntawm cov khoom uas ua yog: 1.007 tons ntawm ethylene, Teb Chaws Asmeskas$2-10 rau catalysts thiab tshuaj (txawv cov khoom), 350 kWh of hluav taws xob, 0.25 cub, 185 txias, Thiab 30 m3 ntawm nitrogen. 82 Ntau lawm kab muaj tau muab tso rau hauv lub lag luam thiab siv, accounting rau accounting 34% Neeg ntiaj teb PE peev xwm. Lub 135,000-ton cog ntawm Shanghai Jinfei tuam txhab siv no tshuab. Maoming tus tshiab khiv ua 350,000-ton/xyoo tshiab ntaus ntawv kuj yuav tau txais no tshuab.
(7) Univation tshuab tuam txhab uas tsis muaj siab roj theem Unipol txheej txheem

LLDPE-HDPE yog ua los ntawm lub siab qis-siab, Cua-siab Unipol PE txheej txheem. Siv slurry catalyst thiab roj

Theem, kua txaj reactor. Nrog conventional thiab metallocene catalysts, Tsis muaj catalyst tshem tawm kauj ruam yuav tsum tau txhaj. Peev thiab kev khiav hauj lwm nqi yog tsawg dua, thiab muaj kuab paug rau ib puag ncig. Ethylene, comonomer thiab catalyst nkag mus rau lub txaj bed reactor, Cov kev khiav hauj lwm rau cov neeg mob yog li 100C thiab 2.5MPa. Cov khoom density yog 915-970kg/m3, thiab tus melt Index yog 0.1-200. Raws li hom catalyst, nqaim los yog sab molecular luj tis yuav tau kho. 89 Ntau lawm kab muaj tau muab tso rau hauv lub lag luam los yog siv. Tib kab peev xwm yuav tau 410,000 mus rau 450,000 tons ib xyoos twg. Tam sim no, Muaj ntau ntau kev li siv tshuab no, mas Maoming, jihua, Yajtze, Tianjin, Zhongyuan, Guangzhou, Daqing, Qilu, lwm yam.

(8) Stamicarbon 4a COMPACT IZ txoj kev no siv ua ntej Z-N catalysts thiab siv COMPACT solution tshuab los ua ib density ntawm

900-970kg/m3 ntawm PE. Ib stirred tank reactor siv, thiab cov polymerization kub yog 200C. Hydrogen siv los tswj cov molecular luj ntawm lub polymer. Tsis muaj catalyst tshem tawm kauj ruam yuav tsum tau txhaj. Cov khoom noj khoom haus thiab zog noj ib ton ntawm cov khoom no: ethylene thiab comonomer 1.016t, hluav taws xob 500kwh, steam 400kg, txias 230m3, cub (zis) 330kg. Muaj cov 5 txheej li nyob rau hauv lub lag luam, muaj peev xwm tag nrho cov peev xwm 650,000 tons/ xyoo.
(9) Basel Polyolefin tuam txhab Hostalen process

Tus txheej txheem ntawm stirred tank siv los ua HDPE. Siv ob reactors hauv parallel los yog koob

Slurry polymerization. Cov khoom noj khoom haus thiab zog noj ib ton ntawm cov khoom uas ua yog: 1.015 t ntawm ethylene thiab comonomers, 400 ncu, 350 kwj dej, Thiab 165 txias. Muaj cov 31 Ntau lawm kab hauv lub lag luam los yog raws li tsim, Muaj ib tug ntau lawm peev xwm ze li ntawm ze li ntawm 3.4 lab tons ib xyoo. Tam sim no, Tus ntaus ntawv ntaus ntawv adopting no tshuab yog Liaohua tuam txhab, Muaj ib tug ntau lawm peev xwm tsuas 40,000 tons. Tam sim no ib zaug xwb-kab ntau lawm peev xwm ntawm no tshuab yuav mus txog 350,000 tons/xyoo, Thiab nws yuav ua tau yuav luag tag nrho cov khoom xws li Bifeng, Cov khoom uas nws cov khoom xws li zaj duab xis, hollow thiab pipe muaj ib lub koob npe nrov nyob hauv lub ntiaj teb.