Hom polyethylene PE ntau lawm tshuab

Hauv kev tsim khoom ntawm txhaj tshuaj molding ntu, nws yog inevitable siv yas raw khoom. Hnub no peb yuav piav qhia txog cov txheej txheem ntau lawm ntawm pe, lub ntiaj teb tseem ceeb 11 hom polyethylene PE ntau lawm tshuab

Tam sim no, muaj ntau lub tuam txhab nrog polyethylene technology hauv ntiaj teb no, nrog rau 7 tuam txhab uas muag nrog LDPE technology, 10 tuam txhab uas muag nrog LDPE thiab puv-density technology, thiab 12 tuam txhab uas muag nrog HDPE technology. Los ntawm txoj kev xav ntawm kev tsim kho technology, Kev kub siab ntau lawm ntawm LDPE yog txoj kev paub tab tshaj plaws hauv kev tsim cov PE cob. Ob txoj kev kettle thiab txoj kev tubular tau matured. Tam sim no, ob lub tshuab tsim khoom siv tau ua ke. Cov teb chaws tsim kho feem ntau siv cov txheej txheem tubular ntau lawm. Ntxiv thiab, Cov tuam txhab txawv teb chaws feem ntau siv cov khoom siv hluav taws xob tsawg-kub siab ua haujlwm los pib cov txheej txheem polymerization, uas tuaj yeem txo qhov kub thiab txias. Kev kub siab ntau lawm ntawm LDPE yuav tsim nyob rau hauv cov kev taw qhia ntawm loj-scale thiab tubular ntau lawm. Kev tsim hluav taws xob tsawg ntawm HDPE thiab LLDPE feem ntau yog siv titanium thiab complex catalysts. Teb chaws Europe thiab Nyiv feem ntau siv Ziegler-type titanium catalysts, thaum lub tebchaws United States feem ntau siv complex catalysts. Tam sim no, muaj 11 hom polyethylene ntau lawm technologies uas yog siv nyob rau hauv lub ntiaj teb no. Cov lus qhia luv luv yog raws li hauv qab no:
(1) Basel tuam txhab roj theem txheej txheem Spherilene

Kev tsim tawm ntawm PE linear tuaj yeem ua los ntawm PE tsawg heev (ULDPE) rau LLDPE, zoo li HDPE. Xaiv

Ziegler-Natta hom titanium-based catalyst thiab Spherilene roj theem txheej txheem yog siv. Nyob rau hauv lub xub ntiag ntawm lub teeb inert hydrocarbons, cov catalyst thiab pub yog pre-polymerized nyob rau hauv tej ua ntej, thiab bulk polymerization tshwm sim nyob rau hauv me me. Lub slurry nkag mus rau thawj theem roj reactor, siv lub circulating gas voj txias kom dissipate tshav kub, thiab tom qab ntawd nkag mus rau ob theem roj reactors. Qhov ntom ntawm cov khoom tsim tawm yog los ntawm ULDPE (tsawg dua 900kg / m3) rau HDPE (loj dua 960 kg/m3), thiab melt flow rate (MFR) thaj tsam ntawm 0.01 rau 100. Vim yog siv ob theem roj reactors, nws tuaj yeem tsim bimodal thiab tshwj xeeb polymers. Tej yam. Txij li cov txheej txheem Spheri Lene tau qhia rau kev ua lag luam hauv 1992, tam sim no nws muaj peev xwm ntau lawm 1.8 lab tons ib xyoos twg. Rau ntau lawm units (1 nyob rau hauv lub tebchaws United States, 2 hauv South Kauslim, 2 hauv Brazil, thiab 1 hauv Is Nrias teb) tau muab tso rau hauv kev ua haujlwm, thiab lwm ob (1 txhua qhov hauv Is Nrias teb thiab Iran) nyob rau hauv kev tsim kho. Lub peev xwm ntawm ib leeg tuaj yeem ncav cuag 100,000 tons ib unit. Ib 300,000 tons ib xyoos twg. Tam sim no, Tuam Tshoj tsis muaj chaw tsim khoom rau hom tshuab no.
(2) Borealis Bastar Txheej txheem

Beixing PE txheej txheem tuaj yeem tsim bimodal thiab unimodal LLDPE, MDPE (medium ntom PE) thiab HDPE. siv

Series voj, gas theem qis siab reactor. Qhov ceev ntawm PE yog 918-970kg / m3, thiab lub melt index yog 0.1-100. Txais Z-N catalyst lossis Ssc (ib qhov chaw nquag) catalyst.

Cov catalyst thiab propane diluent yog tov rau hauv lub compact pre-polymerization reactor, thiab co-catalyst,

Ethylene, comonomer thiab hydrogen. Lub pre-polymerized slurry nkag mus rau lub thib ob loj slurry voj reactor thiab ua hauj lwm nyob rau hauv supercritical tej yam kev mob (75-100C, 5. 5-6.5 MPa). tuaj yeem tsim cov khoom lag luam bimodal. Lub flashed polymer yog txuas ntxiv mus rau fluidized txaj roj theem reactor yam tsis ntxiv cov catalysts tshiab, thiab homopolymer tuaj yeem tau txais. Gas theem cov tshuaj tiv thaiv tej yam kev mob yog: 75-100C, 2. 0MPa. Thawj txheej ntawm cov cuab yeej siv tau muab tso rau hauv kev ua haujlwm hauv Finland hauv 1995, thiab ob kab ntau lawm (450,000 tons / xyoo bimodal khoom) ua nyob rau hauv Abu Dhabi tau muab tso rau hauv kev ua haujlwm nyob rau hauv lub thib ob ib nrab ntawm 2001. Qhov thib tsib txheej ntawm 250,000 tons/xyoo (thib ob txheej ntawm bimodal) kuj tau tsim nyob rau hauv Tuam Tshoj Shanghai Petrochemical Company, ua Tuam Tshoj tus loj tshaj plaws PE ntaus ntawv. Qhov siab tshaj plaws tsim peev xwm ntawm ib kab ntawm cov txheej txheem no tuaj yeem ncav cuag 300,000 tons/xyoo.
(3) BP's gas theem Innovene txheej txheem

Nws tuaj yeem tsim cov khoom LLDPE thiab HDPE, siv Z-N titanium-raws li, chromium-based lossis metallocene catalysts. Chrome

Tus neeg sawv cev tshuaj tuaj yeem tsim cov khoom lag luam nrog qhov dav molecular hnyav faib, thiab Ziegler-Natta (Z-N) catalyst tuaj yeem tsim cov khoom nrog nqaim molecular hnyav faib. Cov kev ua haujlwm ntawm lub txaj reactor tau so, ntawm 75-100C thiab 2.0MPa. Butene los yog hexene tuaj yeem siv los ua comonomer. 30 cov kab ntau lawm tau muab tso rau hauv kev ua haujlwm, tsim los yog kev tsim kho. Lub peev xwm yog nyob ntawm 50,000 rau 350,000 tons ib xyoos twg.

Technip koom tes nrog BP hauv Tebchaws Europe, lub qub Soviet Union, South America, Tuam Tshoj thiab Malaysia
Txhawb BP's Innovene txheej txheem los tsim polyethylene. BP's Innovene PE muaj peev xwm tam sim no tau dhau lawm 8 lab tons ib xyoos twg, suav nrog PE cov khoom siv hauv Bandar Iman hauv Iran, Grangermus hauv Scotland, Peacock hauv Indonesia, thiab Keltih hauv Malaysia. Qhov thib ob nthuav dav ntawm LLDPE / HDPE cog ntawm Tuam Tshoj lub Dushanzi Petrochemical Company kuj tau txais cov txheej txheem Innovene, nce los ntawm 120,000 tons/xyoo rau 200,000 tons/xyoo. SECCO's new 600,000 tons ntawm polyethylene yuav siv cov tshuab no.
(4) ExxonMobil's tubular thiab kettle tshuaj tiv thaiv txheej txheem

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

Loj-scale tubular reactors (muaj peev xwm ntawm 130 rau 350,000 tons/xyoo) thiab stirred tank reactors (muaj peev xwm txog 100,000 tons/xyoo) siv. Kev khiav hauj lwm siab ntawm tubular reactor yog siab li 300MPa, thiab lub tank reactor qis dua 200MPa. Qhov kom zoo dua ntawm cov txheej txheem high-pressure yog kom luv lub sij hawm nyob, thiab tib lub reactor tuaj yeem hloov los ntawm kev tsim homopolymer rau copolymer. Qhov ntom ntawm homopolymer polymer yog 912-935 kg/m3, thiab lub melt index yog 0.2-150. Cov ntsiab lus vinyl acetate tuaj yeem siab npaum li 30%. Cov khoom siv thiab lub zog noj ib tuj ntawm polymer ntau lawm yog: 1.008 tons ntawm ethylene, 800kw zog, 0.35t yiv, thiab 5m3 nitrogen. 23 cov txheej txheem siab-siab reactors tau muab tso rau hauv kev ua haujlwm, nrog lub peev xwm ntau lawm 1.7 lab tons ib xyoos twg. Kev tsim cov homopolymers thiab ntau yam copolymers. Tam sim no, Yanshan tus tshiab tsim 200,000-tuj / xyoo LDPE cog txais lub tuam txhab txoj kev siv tshuab raj.
(5) Mitsui Chemicals low-pressure slurry Cx txheej txheem

Nws tuaj yeem tsim tau HDPE thiab MDPE, siv cov txheej txheem low-pressure slurry CX. tuaj yeem tsim bimodal molecular hnyav faib

The product. Ethylene, hydrogen, comonomer and ultra-high activity catalyst enter the reactor, and polymerization reaction occurs in the slurry state. The polymer property automatic control system can effectively control the product quality, and the ultra-high activity catalyst does not need to be removed from the product. 90% of the solvent separated from the slurry can be directly recycled to the reactor without any treatment. It can produce products with narrow or wide molecular weight distribution with a density of 930-970 kg/m3 and a melt index of 0.01-50. The material consumption and energy consumption per ton of product produced are: 1010 kg of ethylene and comonomers, 305 kWh of electricity, 340 kg of steam, 190 tons of cooling water, thiab 30 m3 of nitrogen. 35 production lines have been put into operation or under construction, with a total capacity of 3.6 lab tons ib xyoos twg. Tam sim no, Kev lag luam hauv tsev siv cov thev naus laus zis no feem ntau suav nrog 220,000-tuj cog hauv Daqing, 140,000-tuj cog hauv Yangtze thiab Yanshan, thiab 70,000-tuj cog hauv Lanzhou.
(6) Chevron-Philips ob lub voj reactor LPE txheej txheem

Phillips Petroleum Company LPE txheej txheem yog siv los tsim cov kab polyethylene (LPE). High active catalyst

Tus neeg sawv cev tshuaj yog polymerized nyob rau hauv lub voj reactor thiab cov isobutane slurry. Cov khoom lag luam yaj qhov ntsuas thiab qhov hnyav molecular faib tuaj yeem hloov kho thiab tswj los ntawm catalyst, kev khiav hauj lwm tej yam kev mob thiab hydrogen. Lub comonomer tuaj yeem yog butene-1, hexene-1, octene-1 thiab lwm yam. Lub siab ua haujlwm catalyst ua rau nws tsis tsim nyog tshem tawm cov catalyst, thiab tsis muaj paraffin lossis lwm yam khoom los ntawm cov khoom raug tsim thaum lub sijhawm polymerization, uas zoo heev txo cov pa phem ib puag ncig. Ethylene, isobutane, comonomer thiab catalyst tsis tu ncua nkag mus rau lub voj reactor thiab hnov ​​​​mob ntawm qhov kub qis dua 100C thiab txog 4.0 MPa, thiab lub sij hawm nyob yog hais txog 1 teev. Qhov kev hloov pauv ib zaug ntawm ethylene ntau dua 97%. The material consumption and energy consumption per ton of product produced are: 1.007 tons ntawm ethylene, US $ 2-10 rau catalysts thiab tshuaj (rau cov khoom sib txawv), 350 kWh of electricity, 0.25 ton chav, 185 ton ntawm dej txias, thiab 30 m3 of nitrogen. 82 cov kab ntau lawm tau muab tso rau hauv kev ua haujlwm thiab kev tsim kho, accounting rau 34% ntawm lub ntiaj teb lub peev xwm PE. Lub 135,000-tuj cog ntawm Shanghai Jinfei Company siv cov thev naus laus zis no. Maoming tus tshiab tsim 350,000-tuj / xyoo tshiab tuaj yeem siv cov thev naus laus zis no.
(7) Univation thev naus laus zis lub tuam txhab tsis tshua muaj siab roj theem txheej txheem Unipol

LLDPE-HDPE yog tsim los ntawm qhov tsis tshua muaj siab, Huab cua-siab Unipol PE txheej txheem. Siv slurry catalyst thiab roj

Theem, fluidized txaj reactor. Nrog cov pa thiab metallocene catalysts, tsis muaj cov kauj ruam tshem tawm catalyst. Kev nqis peev thiab cov nqi khiav lag luam qis dua, thiab muaj kuab paug tsawg dua rau ib puag ncig. Ethylene, comonomer thiab catalyst nkag mus rau lub txaj fluidized reactor, kev khiav hauj lwm tej yam kev mob yog hais txog 100C thiab 2.5MPa. Cov khoom ceev yog 915-970kg / m3, thiab lub melt index yog 0.1-200. Raws li hom catalyst, nqaim lossis dav molecular phaus faib tuaj yeem hloov kho. 89 cov kab ntau lawm tau muab tso rau hauv kev ua haujlwm lossis kev tsim kho. Ib kab muaj peev xwm ua tau 410,000 rau 450,000 tons ib xyoos twg. Tam sim no, muaj ntau yam khoom siv hauv tsev siv cov tshuab no, mas Maoming, Jihua, Yangtze, Tianjin, Zhongyuan, Guangzhou, Daqing, Qilu, lwm yam.

(8) Stamicarbon 4a COMPACT IZ txheej txheem no siv cov Z-N catalysts siab heev thiab siv COMPACT Solution thev naus laus zis los tsim kom muaj qhov ntom ntom.

900-970kg/m3 PE. Ib tug stirred tank reactor yog siv, thiab lub polymerization kub yog 200C. Hydrogen yog siv los tswj qhov hnyav molecular ntawm polymer. Tsis muaj cov kauj ruam tshem tawm catalyst. Cov khoom siv thiab lub zog noj ib tuj ntawm cov khoom yog: ethylene thiab comonomer 1.016t, zog 500kwh, hnyav 400 kg, dej txias 230m3, tsis tshua muaj siab chav (tso zis) 330kg. Muaj 5 cov khoom siv hauv kev ua haujlwm, with a total capacity of 650,000 tons / xyoo.
(9) Basel Polyolefin tuam txhab Hostalen txheej txheem

Cov txheej txheem hostalen ntawm stirred tank yog siv los tsim HDPE. Siv ob lub reactors nyob rau hauv parallel los yog series

Slurry polymerization. The material consumption and energy consumption per ton of product produced are: 1.015 t ntawm ethylene thiab comonomers, 400 kg of steam, 350 kw zog, thiab 165 m3 dej txias. Muaj 31 cov kab ntau lawm hauv kev ua haujlwm lossis hauv qab tsim, nrog lub peev xwm ntau lawm ze 3.4 lab tons ib xyoos twg. Tam sim no, cov khoom siv hauv tsev siv cov thev naus laus zis no yog Liaohua Tuam Txhab, nrog lub peev xwm ntau lawm xwb 40,000 tons. Tam sim no ib leeg-kab siab tshaj plaws ntawm cov tshuab no tuaj yeem ncav cuag 350,000 tons/xyoo, thiab nws tuaj yeem tsim yuav luag txhua yam khoom suav nrog Bifeng, ntawm uas nws cov khoom xws li zaj duab xis, hollow thiab yeeb nkab muaj lub koob npe nrov hauv ntiaj teb.