amakuru

Polyethylene yuzuye (LDPE)ni polymerized etylene nka polymerisation monomer, peroxide nkuwatangije, resimoplastique resin yabonetse kubuntu bwa polymerisiyonike yubusa, uburemere bwa molekile muri 100000 ~ 500000, ubucucike ni 0,91 ~ 0.93g / cm3, nubwoko bworoshye bwa polietilen. .

Ifite ubwitonzi bwiza, kwaguka, kubika amashanyarazi, gukorera mu mucyo, gutunganya byoroshye hamwe no guhumeka ikirere.Imiti ihamye neza, kurwanya alkali, kurwanya imiti rusange yumutungo kamere, ifite uburyo bwinshi bwo gukoresha, harimo gusohora ibicuruzwa, firime ya firime, insinga na kabili, gutera inshinge no guhanagura ibibyimba byubusa, nibindi.

Bitewe n'ubuzima buke bwa radicals yubuntu yakozwe nuwatangije, Ethylene irahagarikwa cyane mukongera umuvuduko wa reaction (110 ~ 350MPa), kuburyo ubucucike bwayo bwiyongera kuri 0.5g / cm3, busa namazi adashobora ongera uhagarike.Mu rwego rwo kugabanya intera ya molekile ya Ethylene no kongera amahirwe yo kugongana hagati ya radicals yubusa cyangwa iminyururu ikura ikora na molekile ya Ethylene, hakorwa reaction ya radical polymerisation yubusa.Polyethylene yubucucike buke ikorwa, bityo polyethylene yubucucike buke nayo yitwa umuvuduko mwinshi polyethylene.

Ubucucike buke bwa polyethylene

Igikorwa cyo kubyaza umusaruro polyethylene nkeya cyane cyane kirimo Ethylene yo kwikuramo ibyiciro bibiri, gutangiza no gutera inshinge, sisitemu ya reaction ya polymerisiyonike, sisitemu yo gutandukanya umuvuduko ukabije hamwe na sisitemu yo gukira, gukuramo granulation na sisitemu yo kuvura, nibindi.

Ukurikije ubwoko butandukanye bwa reaktor, irashobora kugabanywamo ubwoko bubiri: uburyo bwumuvuduko ukabije wuburyo bwa autoclave.

Inzira ya tubular hamwe na keteti inzira ifite ibiranga: reaction ya tubular ifite imiterere yoroshye, kuyikora no kuyifata neza, kandi irashobora kwihanganira umuvuduko mwinshi;Imiterere ya reaction iragoye, kandi kubungabunga no kuyishyiraho biragoye.Muri icyo gihe, ingano ya reakteri iba isanzwe kubera ubushobozi buke bwo gukuraho ubushyuhe.

Muri rusange, uburyo bwa tube bukoreshwa muburyo bunini bwo kwishyiriraho, mugihe uburyo bwa keteti bukoreshwa mubikoresho bitanga ibicuruzwa byongerewe agaciro nka EVA yo murwego rwohejuru hamwe nibintu byinshi bya vinyl acetate.

Bitewe nibiranga inzira zitandukanye, uburyo bwa keteti bufite iminyururu myinshi yashami hamwe nimbaraga nziza zingirakamaro, zikwiranye no gusohora ibishishwa.Uburyo bwa tube bufite uburemere bwagutse bwa molekile, urunigi rudafite amashami hamwe nibintu byiza bya optique, bikwiranye no gutunganya firime zoroshye.

Uburyo bwumuvuduko mwinshi uburyo buke bwa polyethylene ikoranabuhanga

Diameter y'imbere ya reaction ya tubular muri rusange ni 25 ~ 82mm, uburebure ni 0.5 ~ 1.5km, igipimo cya aspect kirenze 10000: 1, diameter yo hanze na diameter y'imbere muri rusange ntabwo iri munsi ya 2mm, kandi ikoti y'amazi ni ikoreshwa mugukuraho igice cyubushyuhe bwa reaction.

Kugeza ubu, umuyoboro ni uburyo bumwe bwo gutunganya imigendekere y’ibanze, kwemeza ingingo zitandukanye zo kugaburira za reaktor, kugenzura uburemere butandukanye bwa molekile, uwatangije n’aho yatewe, hamwe nuburyo butandukanye bwo gutera ifumbire, gutunganya ibicuruzwa, ingano yo kugaruka Ethylene no kohereza imyanya, yakoze ibintu bitandukanye byimikorere.

Kugeza ubu, tekinoroji ikuze yuburyo bukubiyemo cyane cyane inzira ya Lupotech T ya LyondellBasell, inzira ya Exxon Mobil hamwe na DSM ya CTR.

Lupotech T.

Inzira ya LyondellBasell Lupotech T ikoreshwa hafi 60% yubushobozi bwimbere mu gihugu bwibihingwa bya polyethylene nkeya.Umuvuduko wa reaction 260 ~ 310MPa, ubushyuhe bwa reaction 160 ~ 330 ℃, igipimo kimwe cyo guhindura 35%, ubucucike bwibicuruzwa 0.915 ~ 0.935g / cm3, gushonga 0.15 ~ 50g / 10min, ubushobozi bwumurongo umwe 45 × 104T / A, inzira ifite ibintu bitanu bya tekiniki:

.Imikorere ya pulse irashobora kunoza ingaruka zo kuvanga mumashanyarazi, reaction nziza itajegajega, umuvuduko mwinshi wo guhindura, kugabanya urukuta rwa reaction, kunoza coefficient de transfert, hamwe ningaruka nziza yo gukuraho ubushyuhe bwamazi yikoti;

(2) Peroxide yatewe mu bice bitandukanye bya reakteri ku ngingo enye kugirango ibice bine bigize zone reaction;

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Exxon Mobil tubular inzira

Umuvuduko wa reaction ya Exxon Mobil tube inzira ni 250 ~ 310MPa, ubushyuhe bwa reaction ni 215 ~ 310 ℃, igipimo cyo guhinduka kigera kuri 40%, ubwinshi bwibicuruzwa ni 0.918 ~ 0.934g / cm3, icyerekezo cyo gushonga ni 0.2 ~ 50g / (10min), kandi ubushobozi bwo gukora umurongo umwe ni 50 × 104T / A.Inzira ifite ibintu bitandatu biranga tekinike:

.Ongera ituze rya reaction, kugabanya reaction yo kubora, kugabanya igipimo imbere muri reaction, kunoza imikorere yubushyuhe bwa reaction;

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. , hanyuma ukore ubushyuhe bwa reaction ya reaction muburyo bworoshye, kuzamura igipimo cya Ethylene.Muri icyo gihe, kubera ibiryo byinshi byerekeranye nuruhande, ibiryo bishyushye bya Ethylene bigaburira ubwinshi bwa reaktor bigabanuka, ubushyuhe bwumuriro wa reaktor inlet preheater buragabanuka, kandi ikoreshwa ryumuvuduko mwinshi hamwe nicyuka giciriritse kiragabanuka.

.Mugutezimbere ubushyuhe bwamazi yo mumazi yikoti, uburyo bwo kohereza ubushyuhe burahinduka, uburebure bwa reaction buragabanuka, kandi igipimo cyo guhindura cyiyongera;

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Inzira ya CTR

Umuvuduko wa DSM CTR ni 200 ~ 250MPa, ubushyuhe bwa reaction ni 160 ~ 290 ℃, igipimo cyo guhindura ni 28% ~ 33.1%, ntarengwa gishobora kugera kuri 38%, ubwinshi bwibicuruzwa ni 0.919 ~ 0.928g / cm3, icyerekezo cyo gushonga ni 0.3 ~ 65g / (10min), Ubushobozi ntarengwa bumwe bushobora kugera kuri 40 × 104T / A.Inzira ifite ibintu bitanu bya tekiniki:

. no kugabanya ikiguzi cyo gukora;

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(3) ikoti ya reactor ikonjeshwa namazi akonje, ashobora kubyara amavuta kubicuruzwa;

.Hakozwe oligomeri nkeya, kandi uburyo bwo gutunganya gaze yo kuzenguruka bworoshe.

. ntishobora kubyara ibicuruzwa bya kopi (EVA) hamwe nubushakashatsi buke.

Tekinoroji yumusaruro wa polyethylene nkeya kuburyo bwa autoclave

Inzira ya autoclave ikoresha reaction ya tank hamwe na sisitemu ikangura, igipimo cyerekezo gishobora kuva kuri 2: 1 kugeza 20: 1, ingano ya reaction ya tank ni 0,75 ~ 3m3.Ubushyuhe bwa reaction muri rusange ni 150 ~ 300 ℃, igitutu cya reaction ni 130 ~ 200MPa, igipimo cyo guhinduka ni 15% ~ 21%.

Kubera ko isafuriya ya keteti ari icyuma gikikijwe cyane, ihererekanyabubasha rinyuze mu rukuta rwa reaktor rirabujijwe kuruta reaction ya tubular, bityo rero reaction ni inzira ya adiabatic, kandi nta bushyuhe bugaragara bwakuwe kuri reaction.Ubushyuhe bwa reaction bugenzurwa cyane cyane no guterwa inshuro nyinshi ibiryo bya Ethylene ikonje kugirango bingane ubushyuhe bwa reaction.Imashini ifite moteri ikoreshwa na moteri kugirango ikore imvange muburyo bwa reaction kandi wirinde ahantu hashyushye.Uwatangije ni organic peroxide, ishobora guterwa ahantu hatandukanye ku cyerekezo cya axial ya reaction kugirango ikore ibice byinshi byerekana ubushyuhe butandukanye.Nta gusubira inyuma hagati y'ibice byitwara, gukora byoroshye no kugurisha ibicuruzwa byinshi, bishobora kubyara EVA ikoporora hamwe na vinyl acetate igera kuri 40%.

Lupotech Inzira

Lupotech Inzira ikoresha reaction ya tank ya reaction, ingano ya reaction ni 1,2m3, ibikoresho fatizo hamwe nuwatangije byatewe mumashanyarazi amanota menshi, umuvuduko wa reaction ni 210 ~ 246MPa, ubushyuhe bwo hejuru cyane ni 285 ℃, umuyobozi ni propylene cyangwa propane, yongewemo na compressor ya kabiri ya compressor, irashobora kubyara ibicuruzwa bitandukanye bya LDPE / EVA, Ubucucike bwibicuruzwa ni 0.912 ~ 0.951g / cm3, icyerekezo cyo gushonga ni 0.2 ~ 800g / (10min), ibikubiye muri vinyl acetate birashobora kuba hejuru kugeza 40%, igipimo cyinzira imwe yo guhindura reaction ni 10% ~ 21%, igipimo ntarengwa cyo gushushanya umurongo gishobora kugera kuri 12.5 × 104t / a.

Inzira ya Lupotech ntishobora kubyara gusa ibisigazwa bisizwe hamwe nuruhererekane rwinshi kandi bigira ingaruka nziza, ariko kandi bitanga umusaruro wa firime yoroheje hamwe nogukwirakwiza uburemere bwa molekile.Gushonga hamwe nubucucike bwibicuruzwa bya LDPE / EVA birashobora kugenzurwa neza na sisitemu yo kugenzura APC, kandi ibicuruzwa bimwe birashobora kuboneka.Intangiriro nyamukuru yo gutangiza iki gikorwa ni peteroli ya Sirbon, peteroli ya Yangzi, peteroli ya Shanghai, nibindi, ubushobozi bwibikoresho ni 10 × 104T / a.

Exxon Mobil kettle inzira

Ikigega cya Exxon Mobil gikora cyashizweho ubwacyo 1.5m3 ya reakteri ya tanki.Imashini ifite igipimo kinini kinini, igihe kinini cyo kugumana, gutangiza neza no gutangiza ibicuruzwa bigabanya uburemere bwa molekile, ibyo bikaba bifasha mu gukora ibicuruzwa bya firime yoroheje kandi bifite ireme risa na trube.

Igenzura ritandukanye nuburyo bwa Exxon Mobil tube.Isobutene cyangwa n-butane irakoreshwa, ikazamurwa ikagera kuri 25 ~ 30MPa binyuze muri pompe ya diaphragm yumuvuduko ukabije, yatewe inshuro ebyiri kuri compressor yinjira, hanyuma yinjira muri reaction hamwe na Ethylene.

Umuvuduko wa reaction ya rugari ni nini, kandi umuvuduko ntarengwa wa reaction ni 200MPa, ushobora kubyara LDPE homopolymer ifite indangagaciro nkeya hamwe na EVA copolymer hamwe na vinyl acetate nyinshi.

Igikoresho cya Exxon Mobil gishobora kubyara LDPE homopolymer ibicuruzwa bifite igipimo cya 0.2 ~ 150g / (10min) nubucucike bwa 0.910 ~ 0.935g / cm3.Gushonga indangagaciro 0.2 ~ 450g / (10min) vinyl acetate igera kuri 35% ya Ethylene - vinyl acetate copolymer (EVA).Intangiriro nyamukuru yo gutangiza iki gikorwa ni Itsinda rya Lianhong (ahahoze ari Shandong Hauda), ubushobozi bwibikoresho ni 10 × 104T / a, TRINA, ubushobozi bwibikoresho ni 12 × 104T / a, nibindi.