Vinyl acetate (Vac), nke a makwaara dị ka vinyl acetate ma ọ bụ vinyl acetate, bụ mmiri mmiri na-enweghị agba na nke na-enweghị atụ na ọnụ ụlọ okpomọkụ na nrụgide. Dị ka otu n'ime ụwa kasị eji organic organic akụrụngwa, Vac nwere ike imepụta polyvinyl acetate resin (PVAc), polyvinyl mmanya (PVA), polyacrylonitrile (PAN) na ndị ọzọ usoro site na ya polymerization ma ọ bụ copolymerization na ndị ọzọ monomers. A na-eji usoro ndị a eme ihe n'ọtụtụ ebe n'ihe owuwu, akwa akwa, igwe, ọgwụ na ntụ oyi.

Nyocha mkpokọta nke Vinyl Acetate Industry Chain

The elu nke vinyl acetate ụlọ ọrụ yinye bụ tumadi mejupụtara akụrụngwa dị ka acetylene, acetic acid, ethylene na hydrogen, wdg. Isi ụzọ nkwadebe na-ekewa ụzọ abụọ: otu bụ mmanụ ala ethylene usoro, nke e mere site ethylene, acetic acid na hydrogen, na-emetụta mgbanwe nke crude mmanụ ahịa. Otu bụ nkwadebe nke acetylene site eke gas ma ọ bụ calcium carbide, na mgbe ahụ na acetic acid njikọ nke vinyl acetate, eke gas ubé elu na-eri karịa calcium carbide. N'okpuru ala bụ nkwadebe nke mmanya polyvinyl, latex ọcha (polyvinyl acetate emulsion), VAE, EVA na PAN, wdg, nke mmanya polyvinyl bụ isi ihe achọrọ.

1. Upstream akụrụngwa nke vinyl acetate

Acetic acid bụ isi akụrụngwa nke VAE, yana oriri ya nwere njikọ siri ike na VAE. Data na-egosi na ebe ọ bụ na 2010, China pụtara na oriri nke acetic acid dị ka a dum na-eto eto na-emekarị, nanị na 2015 site na ụlọ ọrụ ọganihu ala na downstream ina mgbanwe agbadala, 2020 ruru 7.2 nde tọn, mmụba nke 3.6% tụnyere 2019. Na downstream vinyl acetate, na ndị ọzọ na ngwaahịa ikike Ọdịdị na-abawanye dị ka acetate nke ngwaahịa ga-anọgide na-agbanwe agbanwe ka ụlọ ọrụ mmepụta ihe. eto.

N'ihe gbasara ngwa ngwa ala, 25.6% nke acetic acid na-eji PTA (nke terephthalic acid dị ọcha), 19.4% nke acetic acid na-emepụta vinyl acetate, na 18.1% nke acetic acid na-emepụta ethyl acetate. N'ime afọ ndị na-adịbeghị anya, ụkpụrụ ụlọ ọrụ nke ihe nrụpụta acetic acid adịla mma. A na-eji Vinyl acetate mee ihe dị ka otu n'ime akụkụ ngwa ngwa kachasị mkpa nke acetic acid.

2. Ọdịdị ala nke vinyl acetate

A na-ejikarị vinyl acetate na-emepụta mmanya polyvinyl na Eva, wdg Vinyl acetate (Vac), ester dị mfe nke acid saturated acid na mmanya na-abaghị uru, nwere ike polymerized n'onwe ya ma ọ bụ ya na ndị ọzọ monomers na-emepụta polymers dị ka polyvinyl mmanya (PVA), ethylene vinyl acetate - ethylene copolymer (ethylene copolymer) ma ọ bụ polymer na-eme ka a na-emepụta ihe, wdg. ndị ọrụ, agba, inks, nhazi akpụkpọ anụ, emulsifiers, ihe nkiri na-edozi mmiri, na ihe ndị na-eme ka ala dị na kemịkalụ, textile O nwere ọtụtụ ngwa ngwa na kemịkalụ, textile, ụlọ ọrụ ọkụ, ime akwụkwọ, ihe owuwu na ugbo ala. Data na-egosi na 65% nke vinyl acetate na-eji emepụta mmanya polyvinyl na 12% nke vinyl acetate na-emepụta polyvinyl acetate.

Nyocha nke ọnọdụ ugbu a nke vinyl acetate ahịa

1, Vinyl acetate mmepụta ike na mmalite ọnụego

Ihe karịrị 60% nke ikike mmepụta vinyl acetate ụwa gbadoro ụkwụ na mpaghara Eshia, ebe ikike mmepụta vinyl acetate nke China na-akpata ihe dị ka 40% nke ikike mmepụta ụwa niile ma bụrụ obodo kacha emepụta vinyl acetate n'ụwa. E jiri ya tụnyere usoro acetylene, usoro ethylene na-eme ka akụ na ụba dịkwuo mma na gburugburu ebe obibi, na ịdị ọcha ngwaahịa dị elu. Ebe ọ bụ na ike ike nke ụlọ ọrụ kemịkalụ China na-adabere na coal, mmepụta nke vinyl acetate na-adabere na usoro acetylene, na ngwaahịa ndị ahụ dị ntakịrị. Ike mmepụta vinyl acetate nke ụlọ gbasaara nke ọma n'oge 2013-2016, ebe ọ na-agbanweghị agbanwe n'oge 2016-2018. Industrylọ ọrụ vinyl acetate nke China nke afọ 2019 na-eweta ọnọdụ oke arụ ọrụ, yana ikike karịrị ya na nkeji usoro calcium carbide acetylene yana itinye uche ụlọ ọrụ dị elu. 2020, China si vinyl acetate mmepụta ikike nke 2.65 nde tọn / afọ, ewepụghị afọ-na-afọ.

2, Vinyl acetate oriri

N'ihe gbasara oriri na-eri, vinyl acetate nke China n'ozuzu ya na-egosi mgbanwe na-agbanwe agbanwe, na ahịa maka vinyl acetate na China na-amụbawanyewanye n'ihi mmụba nke ọchịchọ nke ala EVA, wdg Data na-egosi na, ma e wezụga maka 2018, China's vinyl acetate oriri site na ihe ndị dị ka ịrị elu nke acetic acids 3, ebe ọ bụ na ịrị elu nke acetic acid 3, ebe ọ bụ na ịrị elu nke acetic acid 3, China. Ọchịchọ ahịa acetate ebiliwo ngwa ngwa, oriri ebiliwo kwa afọ, ka nke 2020 dị ala eruola tọn nde 1.95, mmụba nke 4.8% ma e jiri ya tụnyere 2019.

3, The nkezi price nke vinyl acetate ahịa

Site n'echiche nke ọnụ ahịa ahịa vinyl acetate, nke ike karịrị ike metụtara, ọnụ ahịa ụlọ ọrụ kwụsiri ike na 2009-2020. 2014 site na mkpirisi ọkọnọ nke mba ofesi, ọnụ ahịa ngwaahịa ụlọ ọrụ abawanyela nke ukwuu, ụlọ ọrụ ụlọ na-agbasawanye mmepụta ihe, na-ebute oke oke ike. Ọnụ ahịa acetate vinyl dara nke ukwuu na 2015 na 2016, na 2017, metụtara amụma nchekwa gburugburu ebe obibi, ọnụ ahịa ngwaahịa ụlọ ọrụ bilitere nke ukwuu. 2019, n'ihi ọkọnọ zuru oke n'ahịa acetic acid dị elu na iji nwayọ na-achọ ụlọ ọrụ ihe owuwu nke ala, ọnụ ahịa ngwaahịa ụlọ ọrụ dara nke ukwuu, yana na 2020, ọrịa ahụ metụtara, nkezi ọnụahịa ngwaahịa dara n'ihu, yana dị ka nke July 2021, ọnụ ahịa dị n'ahịa ọwụwa anyanwụ ruru ihe karịrị 12,000 ọnụahịa ịrị elu dị ukwuu, nke bụ isi n'ihi ọnụahịa mmanụ na-abawanye, nke bụ isi ihe kpatara ọnụahịa mmanụ. obere ahịa ahịa kpatara ụfọdụ nkwụsị ụlọ ọrụ ma ọ bụ igbu oge.

Nchịkọta nke ụlọ ọrụ Ethyl Acetate

Ụlọ ọrụ Ethyl acetate China nke akụkụ anọ nke Sinopec nwere ikike nke 1.22 nde tọn / afọ, na-aza 43% nke mba ahụ, na Anhui Wanwei Group nwere 750,000 tọn / afọ, na-aza 26.5%. Akụkụ nke mba ofesi etinyere ego Nanjing Celanese 350,000 tọn / afọ, na-aza 12%, yana akụkụ nkeonwe Inner Mongolia Shuangxin na Ningxia Dadi ngụkọta 560,000 tọn / afọ, na-aza 20%. Ndị na-emepụta vinyl acetate ugbu a dị na Northwest, East China na Southwest, yana ikike Northwest na-aza 51.6%, East China na-aza 20.8%, North China na-aza 6.4% na Southwest na-aza 21.2%.

Nyocha nke vinyl acetate anya

1, EVA downstream ina uto

Enwere ike iji EVA downstream nke vinyl acetate dị ka ihe nkiri mkpuchi cell PV. Dị ka ụwa ọhụrụ ike netwọk, EVA si ethylene na vinyl acetate (VA) abụọ monomers site copolymerization mmeghachi omume, na uka akụkụ nke VA na 5% -40%, n'ihi na ya ọma arụmọrụ, ngwaahịa na-ọtụtụ-eji na ụfụfụ, ọtọ wụsara film, nkwakọ film, injection ịfụ ngwaahịa, agwakọta mmadụ na adhesives, fotovoltaji na-agbaze cell cable, na-ekpo ọkụ na-ekpo ọkụ cell cable wdg 2020 maka enyemaka fotovoltaic n'afọ gara aga, ọtụtụ ndị na-emepụta modul ụlọ ụlọ ekwuputala mgbasawanye nke mmepụta, yana site na nhazi nke fotovoltaic modul size, ọnụọgụ abụọ nke iko modul nwere ọnụ ọgụgụ ntinye ọnụ na-abawanye nke ukwuu, ọchịchọ maka fotovoltaic modul gafere uto a na-atụ anya ya, na-akpali mmasị EVA. A na-atụ anya na a ga-etinye tọn 800,000 nke ikike EVA n'ime mmepụta na 2021. Dị ka atụmatụ ahụ si kwuo, uto nke 800,000 tọn nke ikike mmepụta EVA ga-eme ka ọganihu kwa afọ nke 144,000 tọn vinyl acetate chọrọ, nke ga-eme ka ọganihu kwa afọ nke 10 na 103 acid acids.

2, Vinyl acetate overcapacity, elu-ọgwụgwụ ngwaahịa ka mkpa ka a ga-ibubata

China nwere ikike karịrị nke vinyl acetate, na ngwaahịa ndị dị elu ka kwesịrị ibubata. Ka ọ dị ugbu a, ọkọnọ nke vinyl acetate na China karịrị ihe a chọrọ, yana oke oke na mmepụta oke na-adabere na oriri mbupụ. Kemgbe mgbasawanye nke vinyl acetate mmepụta ike na 2014, mbupụ vinyl acetate nke China abawanyela nke ukwuu, na ụfọdụ ngwaahịa ndị a na-ebubata ejirila ikike mmepụta ụlọ dochie anya. Tụkwasị na nke ahụ, ihe ndị China na-ebupụ na-abụkarị ngwaahịa dị ala, ebe mbubata na-abụkarị ngwaahịa dị elu. Ka ọ dị ugbu a, China ka kwesịrị ịdabere na mbubata maka ngwaahịa vinyl acetate dị elu, ụlọ ọrụ vinyl acetate ka nwere ohere maka mmepe na ahịa ngwaahịa dị elu.