Vinyl acetate (VAc), eo hape e tsejoang e le vinyl acetate kapa vinyl acetate, ke mokelikeli o se nang mebala le o bonaletsang mocheso oa kamore le khatello. E le e 'ngoe ea lihlahisoa tse sebelisoang ka ho fetesisa tsa indasteri lefatšeng, VAc e ka hlahisa polyvinyl acetate resin (PVAc), polyvinyl alcohol (PVA), polyacrylonitrile (PAN) le tse ling tse tsoang ho eona ka polymerization kapa copolymerization le li-monomers tse ling. Li-derivatives tsena li sebelisoa haholo kahong, masela, mechine, meriana le li-conditioner tsa mobu.

Kakaretso ea Tlhahlobo ea Vinyl Acetate Industry Chain

Karolo e ka holimo ea ketane ea indasteri ea vinyl acetate e entsoe haholo ka lisebelisoa tse tala tse kang acetylene, acetic acid, ethylene le hydrogen, joalo-joalo Mekhoa e meholo ea ho itokisa e arotsoe ka mefuta e 'meli: e' ngoe ke mokhoa oa petroleum ethylene, o entsoeng ka ethylene, acetic acid le hydrogen, mme e angoa ke ho feto-fetoha ha litheko tsa oli e tala. E 'ngoe ke ho lokisoa ha acetylene ka khase ea tlhaho kapa calcium carbide, ebe joale le acetic acid synthesis ea vinyl acetate, khase ea tlhaho e theko e phahameng hanyane ho feta calcium carbide. Haholo-holo ho lokisoa ha joala ba polyvinyl, latex e tšoeu (polyvinyl acetate emulsion), VAE, EVA le PAN, joalo-joalo, tseo joala ea polyvinyl e leng eona tlhokahalo e ka sehloohong.

1, Lisebelisoa tse tala tse holimo tsa vinyl acetate

Acetic acid ke eona ntho e ka sehloohong e tala ea VAE, 'me tšebeliso ea eona e na le kamano e matla le VAE. Lintlha li bonts'a hore ho tloha ka 2010, tšebeliso e bonahalang ea China ea asiti ea asiti ka kakaretso e ntse e hola, ke ka selemo sa 2015 feela ka 2015, liphetoho tsa tlhokahalo ea indasteri li theohile, 2020 e fihlile ho lithane tse limilione tse 7.2, keketseho ea 3.6% ha e bapisoa le 2019. The downstream vinyl acetate le lihlahisoa tse ling tsa sebopeho sa sebopeho se fetoha, sekhahla sa tšebeliso se eketsehile, indasteri ea acetic acid ka kakaretso e tla tsoelapele ho hola.

Mabapi le lits'ebetso tse tlase, 25.6% ea acetic acid e sebelisetsoa ho hlahisa PTA (purified terephthalic acid), 19.4% ea acetic acid e sebelisetsoa ho hlahisa vinyl acetate, le 18.1% ea acetic acid e sebelisetsoa ho hlahisa ethyl acetate. Lilemong tsa morao tjena, mokhoa oa indasteri oa lihlahisoa tsa acetic acid o ntse o tsitsitse. Vinyl acetate e sebelisoa e le e 'ngoe ea likarolo tsa bohlokoa ka ho fetisisa tsa ts'ebeliso ea acetic acid.

2. Sebopeho se tlaase sa vinyl acetate

Vinyl acetate e sebelisoa haholo-holo ho hlahisa joala ba polyvinyl le EVA, joalo-joalo Vinyl acetate (Vac), ester e bonolo ea asiti e tletseng le joala bo sa tsitsang, e ka etsoa polymerized ka boeona kapa ka li-monomers tse ling ho hlahisa li-polymers tse kang polyvinyl alcohol (PVA), ethylene vinyl acetate - ethylene copolymer (EVA), joalo-joalo Li-polymers tse hlahisoang li ka sebelisoa e le li-adhesives, pampiri kapa lesela. li-agent, lipente, li-inks, lisebelisoa tsa letlalo, li-emulsifiers, lifilimi tse qhibilihang ka metsi, le li-conditioner tsa mobu lik'hemik'hale, textile E na le mefuta e mengata ea likopo tsa lik'hemik'hale, tsa masela, tse khanyang, tsa ho etsa pampiri, tsa kaho le tsa likoloi. Lintlha li bontša hore 65% ea vinyl acetate e sebelisetsoa ho hlahisa joala ea polyvinyl le 12% ea vinyl acetate e sebelisetsoa ho hlahisa polyvinyl acetate.

Tlhahlobo ea boemo ba hajoale ba 'maraka oa vinyl acetate

1, Matla a tlhahiso ea acetate ea vinyl le sekhahla sa ho qala

Ho feta 60% ea matla a lefats'e a tlhahiso ea vinyl acetate e tsepame haholo sebakeng sa Asia, ha matla a tlhahiso ea vinyl acetate ea Chaena a etsa karolo ea 40% ea kakaretso ea tlhahiso ea lefats'e 'me ke naha e kholo ka ho fetisisa lefatšeng e hlahisang acetate. Ha ho bapisoa le mokhoa oa acetylene, mokhoa oa ethylene o na le moruo le tikoloho, o na le bohloeki bo phahameng ba lihlahisoa. Kaha matla a matla a indasteri ea lik'hemik'hale ea Chaena haholo-holo a itšetlehile ka mashala, tlhahiso ea vinyl acetate e itšetlehile haholo ka mokhoa oa acetylene, 'me lihlahisoa li batla li le tlaase. Matla a tlhahiso ea vinyl acetate ea lapeng a ile a hola haholo nakong ea 2013-2016, ha a ntse a lula a sa fetohe nakong ea 2016-2018. Indasteri ea vinyl acetate ea 2019 ea China e fana ka boemo ba sebopeho se matla haholo, se nang le matla a feteletseng ho likarolo tsa ts'ebetso ea calcium carbide acetylene le khatello e phahameng ea indasteri. 2020, tlhahiso ea China ea vinyl acetate ea lithane tse limilione tse 2.65 ka selemo, selemo le selemo.

2, tšebeliso ea acetate ea vinyl

Mabapi le tšebeliso e amehang, vinyl acetate ea Chaena ka kakaretso e bontša ho fetoha ha maemo ho ea holimo, 'me' maraka oa vinyl acetate oa Chaena o ntse o eketseha butle-butle ka lebaka la kholo ea tlhokahalo ea EVA e tlaase, joalo-joalo Lintlha li bontša hore, ntle le 2018 , Tšebeliso ea China ea vinyl acetate ka lintlha tse kang ho phahama ha litheko tsa acetic acid, tšebeliso e fokotsehile, ho tloha ka 2013 'maraka oa China oa vinyl acetate. tlhokahalo e eketsehile ka potlako, tšebeliso e ntse e eketseha selemo le selemo, ha 2020 e tlase e fihlile ho lithane tse limilione tse 1.95, keketseho ea 4.8% ha e bapisoa le 2019.

3, Theko e tloaelehileng ea 'maraka oa vinyl acetate

Ho latela pono ea litheko tsa 'maraka tsa vinyl acetate, tse anngoeng ke matla a feteletseng, litheko tsa indasteri li ile tsa lula li tsitsitse ho 2009-2020. 2014 ka konteraka ea phepelo ea mose ho maoatle, litheko tsa lihlahisoa tsa indasteri li eketsehile haholo, likhoebo tsa malapeng ka mafolofolo li atolosa tlhahiso, e leng se bakang ho feta tekano. Litheko tsa vinyl acetate li ile tsa theoha haholo ka 2015 le 2016, 'me ka 2017, e anngoeng ke maano a tšireletso ea tikoloho, litheko tsa lihlahisoa tsa indasteri li ile tsa phahama haholo. 2019, ka lebaka la phepelo e lekaneng 'marakeng oa acetic acid le tlhokahalo e ntseng e fokotseha indastering ea kaho e tlase, litheko tsa lihlahisoa tsa indasteri li ile tsa theoha haholo, mme ka 2020, e anngoeng ke seoa sena, theko e tloaelehileng ea lihlahisoa e ile ea theoha le ho feta, mme ho tloha ka Phupu 2021, litheko marakeng a ka bochabela li fihlile ho feta 12,000 Ho phahama ha theko ke ho hoholo, e leng haholo-holo ka lebaka la tšusumetso ea litaba tse monate tsa litheko tsa oli e tala le phepelo e tlase ea mmaraka ka kakaretso e bakoang ke ho koaloa ha lifeme kapa tieho.

Kakaretso ea Likhamphani tsa Ethyl Acetate

Ethyl acetate likhoebo tsa Machaena karolo ea limela tse 'ne tsa Sinopec li na le matla a lithane tse limilione tse 1.22 ka selemo, e leng karolo ea 43% ea naha,' me Anhui Wanwei Group e na le lithane tse 750,000 / selemo, tse etsang 26.5%. Karolo ea matsete a tsoang kantle ho naha Nanjing Celanese lithane tse 350,000 / selemo, e ikarabellang bakeng sa 12%, le karolo ea poraefete Inner Mongolia Shuangxin le Ningxia Dadi kaofela ha lithane tse 560,000 / selemo, tse etsang 20%. Bahlahisi ba hajoale ba vinyl acetate ea lapeng ba fumaneha haholo-holo Leboea-Bophirima, China Bochabela le Boroa-Bophirima, 'me matla a leboea-bophirima a nka karolo ea 51.6%, China Bochabela e etsa 20.8%, North China e ikarabella bakeng sa 6.4% le Southwest accounting ea 21.2%.

Tlhahlobo ea pono ea vinyl acetate

1, kholo ea tlhokeho e tlase ea EVA

EVA e tlase ea vinyl acetate e ka sebelisoa e le filimi ea PV cell encapsulation. Ho ea ka marang-rang a macha a matla a lefats'e, EVA ho tloha ethylene le vinyl acetate (VA) monomers tse peli ka copolymerization reaction, karolo e kholo ea VA ka 5% -40%, ka lebaka la ts'ebetso ea eona e ntle, sehlahisoa se sebelisoa haholo ka foam, se sebetsang hantle. filimi e tšolotsoeng, filimi e pakang, lihlahisoa tse butsoang ka ente, li-agent tse kopanyang le likhomaretsi, terata le thapo, filimi ea photovoltaic cell encapsulation le hot melt. likhomaretsi, joalo-joalo 2020 bakeng sa litšehetso tsa photovoltaic selemong se fetileng, bahlahisi ba bangata ba ntlo ea mojule oa hlooho ba phatlalalitse katoloso ea tlhahiso, 'me ka mefuta e fapaneng ea boholo ba mojule oa photovoltaic, sekhahla sa ho kenella ha mojule oa likhalase habeli se ile sa eketseha haholo, tlhokahalo ea photovoltaic. li-module tse fetang kholo e lebelletsoeng, tse susumetsang kholo ea tlhoko ea EVA. Ho lebelletsoe hore lithane tse 800,000 tsa matla a EVA li tla kenngoa tlhahisong ka 2021. Ho ea ka khakanyo, kholo ea lithane tse 800,000 tsa matla a tlhahiso ea EVA e tla tsamaisa kholo ea selemo ea 144,000 ea tlhokahalo ea vinyl acetate, e tla tsamaisa kholo ea selemo le selemo. ea lithane tse 103,700 tsa tlhokahalo ea asiti ea acetic.

2, Vinyl acetate overcapacity, lihlahisoa tse phahameng li ntse li hloka ho romelloa kantle ho naha

China e na le matla a mangata a vinyl acetate, 'me lihlahisoa tse phahameng li ntse li hloka ho romelloa linaheng tse ling. Hajoale, phepelo ea vinyl acetate naheng ea China e feta tlhoko, ka kakaretso e fetelletseng le tlhahiso e feteletseng e itšetlehileng ka tšebeliso ea kantle ho naha. Ho tloha ha ho atolosoa matla a tlhahiso ea vinyl acetate ka 2014, lihlahisoa tsa China tsa vinyl acetate li eketsehile haholo, 'me lihlahisoa tse ling tse tsoang linaheng tse ling li nkeloe sebaka ke matla a tlhahiso ea malapeng. Ho feta moo, thepa e romelloang kantle ho naha ea China haholo-holo ke lihlahisoa tsa boemo bo tlase, athe tse tsoang kantle ho naha haholo-holo ke lihlahisoa tsa maemo a holimo. Hona joale, Chaena e ntse e hloka ho itšetleha ka thepa e tsoang linaheng tse ling bakeng sa lihlahisoa tse phahameng tsa vinyl acetate, 'me indasteri ea vinyl acetate e ntse e e-na le sebaka sa ntlafatso marakeng oa lihlahisoa tse phahameng.