Vinyl acetate (Vac), tseem hu ua vinyl acetate lossis yas acetate, yog cov kua tsis muaj xim thiab lub siab. Raws li ib qho ntawm lub ntiaj teb cov khoom lag luam cov khoom siv organic, vacryylonitrile (PVAC Cov derivatives no tau siv dav hauv kev tsim kho, cov ntawv nyeem, tshuab, khoom siv thiab cov khoom noj kom huv.

Txheej txheem kev tsom xam ntawm vinyl acetate kev lag luam saw

Qhov nce ntawm Vinyl acetate kev lag luam saw yog tsuas yog tsim cov ntaub ntawv raw xws li kev npaj ua pa, thiab muaj kev cuam tshuam los ntawm kev hloov pauv ntawm cov nqi roj crude. Ib qho yog kev npaj ntawm acetylene los ntawm cov nkev lossis calacium carbide, thiab tom qab ntawd thiab accelic acid synthetes, ntuj roj me dua li calcium carbide. Cov dej cawv yog feem ntau yog kev npaj ntawm polyvinyl cawv, dawb yas (vae, EVAs, ETC, thiab lwm yam, ntawm uas cov neeg xav tau lub ntsiab.

1, ntws los cov khoom siv ntawm vinyl acetate

Acetic acid yog qhov tseem ceeb cov khoom siv tseem ceeb ntws los ntawm Vae, thiab nws tau noj muaj kev sib txheeb nrog kev sib raug zoo nrog Vae. Cov ntaub ntawv qhia tau tias txij li xyoo 2010, Tuam Tshoj qhov kev hloov acetic tau nce ntxiv, kev siv roj ntsha tau nce, cov khoom siv roj ntsha tau nce ntxiv, kev siv roj ntsha ua kom zoo nkauj ntxiv, kev siv roj ntsha actetic actete,

Nyob rau hauv cov nqe lus ntawm cov ntawv thov hauv qab, 25.6% ntawm acetic acid yog siv los tsim cov ntaub acetic acid), thiab 18,% ntawm acetic acid yog siv los tsim cov accels acetate. Nyob rau hauv xyoo tsis ntev los no, kev lag luam qauv ntawm acetic acid derivatives tau sib luag. Vinyl acetate yog siv los ua ib qho tseem ceeb tshaj plaws ntawm cov ntawv thov nqes hav ntawm acetic acid.

2. Downstream qauv ntawm vinyl acetate

Vinyl acetate feem ntau yog siv los tsim polyvinyl cawv thiab lwm yam yooj yim, tuaj yeem siv cov roj av uas tsis muaj zog - Ethylene VinylSurate - Ethylene Vinyling (Ethylene Cov nplaum, ntawv los yog cov ntaub qhwv cov kua muag, inks, cov khoom siv tawv, cov ntaub ntawv dej, kev lag luam lub teeb, kev tsim kho thiab tsheb lag luam. Cov ntaub ntawv qhia tias 65% ntawm Vinyl acetate yog siv los tsim polyvinyl cawv thiab 12% ntawm vinyl acetate yog siv los ua polyvinyl acetate.

Kev tsom xam ntawm cov xwm txheej tam sim no ntawm Vinyl acetate kev ua lag luam

1, Vinyl acetat ntau lawm muaj peev xwm thiab pib tus nqi

Ntau dua 60% ntawm lub ntiaj teb Vinyl acetate ntau lawm muaj peev xwm nyob rau hauv thaj chaw Asetection cov peev txheej thiab yog lub ntiaj teb loj tshaj vinyl acetate ua lub teb chaws. Piv nrog acetylene txoj kev, lub ethylene txoj kev yog kev lag luam ntau dua thiab ib puag ncig ua phooj ywg, nrog cov khoom lag luam siab dua. Txij li lub zog hluav taws xob ntawm Tuam Tshoj txoj kev lag luam tshuaj tsuas yog siv cov thee, kev tsim cov yas acetate yog tsuas yog raws cov qauv acetain yog feem ntau yog cov qauv acetylene, thiab cov khoom yog tsawg-kawg. Tsev vinyl acetental ntau lawm muaj peev xwm nthuav dav lub sijhawm xyoo 2013-2016, thaum uas tshuav tsis hloov pauv thaum xyoo 2016-2018. 2019 Tuam Tshoj lub vinyl acetate kev lag luam nthuav tawm ib qho teeb meem uas muaj peev xwm ntau tshaj plaws hauv calcium carbide acetylene txheej txheem thiab kev lag luam siab. 2020, Tuam Tshoj lub vinyl acetat ntau lawm muaj peev xwm ntawm 2.65 lab tons / xyoo, ncaj xyoo xyoo.

2, yas acetate kev noj

Raws li kev siv tau muaj kev txhawj xeeb, Tuam Tshoj lub txhab acetate raws li kev loj hlob ntawm cov khoom siv tau ua tiav rau cov khoom siv tau ua tiav rau kev ua haujlwm hauv Suav teb eva Sawv nrawm, tau noj tau nce siab xyoo los ntawm xyoo, raws li 2020 tus nqi qis tau mus txog 1.95 lab tons, muaj ntxiv 4.8% piv nrog 2019.

3, tus nqi nruab nrab ntawm vinyl acetate kev ua lag luam

Los ntawm qhov kev pom ntawm Vinyl acetate Tus nqi ua lag luam, cuam tshuam los ntawm kev muaj peev txheej dhau, kev lag luam cov nqi tseem nyob hauv xyoo 2009-2020. Lub 2014 Los ntawm Overseas Cov Khoom Siv Nyiaj Txiag, Kev Lag Luam Cov Khoom Siv Cov Khoom Siv tau nce ntau dua, kev lag luam hauv tsev ntau dua, ua rau muaj kev sib tw loj heev. Vinyl acetate tus nqi poob siab nyob rau hauv 2015 thiab 2017, thiab xyoo 2017, cuam tshuam los ntawm kev tiv thaiv kev tiv thaiv ib puag ncig, cov khoom lag luam cov nqi nce nrawm. 2019, vim muaj kev lag luam txaus nyob rau hauv cov kev lag luam acttream actife, thiab nyob rau hauv cov neeg muaj kev lag luam sab hnub tuaj thiab muaj txiaj ntsig zoo ntawm cov khoom lag luam sab hnub tuaj thiab cov khoom lag luam muaj txiaj ntsig ntau yam tshwm sim los ntawm qee lub Hoobkas kaw lossis qeeb.

Txheej txheem cej luam ntawm Ethyl Acetate tuam txhab

Ethyl Acetate Suav kev lag luam Sinopec plaub cov nroj tsuag muaj lub peev xwm ntawm 1.22 lab rau 43% ntawm lub teb chaws muaj 7,50,000 tons / xyoo, suav rau 26.5%. Cov ntu txawv teb chaws nqis peev ntau dhau 350,000 tons / xyoo, suav nyiaj rau 12%, thiab NingXia Diri tag nrho 560, suav nyiaj rau 20%. Tam sim no cov chaw tsim khoom siv hluav taws xob vinyl acetate yog nyob rau sab qaum teb hnub nyoog rau 5,8%, sab hnub poob suav nyiaj txiag rau 6.4% thiab yav qab teb nyiaj txiag rau 21,2%.

Tsom xam ntawm vinyl acetate Outetain

1, eva nqis deg pov kev loj hlob

Eva downtream ntawm vinyl acetate tuaj yeem siv tau ua PVT cell encapsulation zaj duab xis. Raws li lub zog thoob ntiaj teb tshiab network, Eva los ntawm ethylene thiab vrayl acetting zaj duabs thiab kub yaj ua cov nplaum, Lwm yam Nws cia siab tias 800,000 Tons ntawm EVA muaj peev xwm muab tso rau hauv kev tsim khoom ntawm 1021. Raws li kev nce qib ntawm 103,700 tons kev loj hlob ntawm 103,700 tons ntawm acetic cov kua qaub.

2, ntaub pua av yas acetate overcapacity, cov khoom lag luam high-end-endas tseem yuav tsum tau import

Tuam Tshoj muaj kev sib tshooj tag nrho ntawm vinyl acetate, thiab cov khoom lag luam high-endas tseem yuav tsum tau import. Tam sim no, kev muab cov ntaub ntawv vinyl acetate hauv Suav tau tshaj qhov kev thov, nrog kev sib tshooj tag nrho thiab ntau dhau ntau lawm siv rau kev xa tawm. Txij li thaum nthuav tawm ntawm vinyl acetat ntau lawm ua tau ntau lawm nyob rau xyoo 2014, Tuam Tshoj lub vinyl acetate Cov khoom xa tawm tau nce ntau yam tau hloov los ntawm kev muaj peev xwm sib luag. Tsis tas li ntawd, Tuam Tshoj qhov kev xa tawm yog feem ntau cov khoom lag luam tsawg, thaum cov khoom lag luam yog tsuas yog cov khoom lag luam siab. Ntawm tam sim no, Tuam Tshoj tseem yuav tsum cia siab rau kev nkag mus rau High-end vinyl acetate kev lag luam tseem muaj kev txhim kho hauv cov khoom lag luam siab.