ʻO Vinyl acetate (VAc), i ʻike ʻia ʻo vinyl acetate a i ʻole vinyl acetate, he wai kala ʻole a ʻike maopopo i ka lumi wela a me ke kaomi. Ma ke ʻano he mea hoʻohana nui ʻia o ka honua, hiki i ka VAc ke hana i ka polyvinyl acetate resin (PVAc), polyvinyl alcohol (PVA), polyacrylonitrile (PAN) a me nā mea ʻē aʻe ma o kāna polymerization a i ʻole copolymerization me nā monomers ʻē aʻe. Hoʻohana nui ʻia kēia mau derivatives i ke kūkulu ʻana, textiles, machinery, pharmaceuticals a me nā mea hoʻonaninani lepo.

ʻIke holoʻokoʻa o ka Vinyl Acetate Industry Chain

ʻO ka upstream o ke kaulahao ʻoihana vinyl acetate ka mea nui e like me ka acetylene, acetic acid, ethylene a me ka hydrogen, a me nā mea ʻē aʻe. acetic acid a me ka hydrogen, a ua hoʻopilikia ʻia e ka piʻi ʻana o nā kumukūʻai aila. ʻO kekahi o ka hoʻomākaukau ʻana i ka acetylene e ke kinoea maoli a i ʻole ka calcium carbide, a laila a me ka acetic acid synthesis o vinyl acetate, ʻoi aku ka nui o ke kinoea maoli ma mua o ka calcium carbide. ʻO lalo ka hoʻomākaukau ʻana i ka waiʻona polyvinyl, ka latex keʻokeʻo (polyvinyl acetate emulsion), VAE, EVA a me PAN, a me nā mea ʻē aʻe, ʻo ia ka polyvinyl alcohol ke koi nui.

1, ʻO nā mea maka mua o ka vinyl acetate

ʻO ka ʻakika Acetic ka waiwai maka mua o VAE, a he pilina ikaika kona ʻai ʻana me VAE. Hōʻike ka ʻikepili mai ka makahiki 2010, ke ulu nei ka ʻai ʻana o Kina i ka acetic acid ma ke ʻano holoʻokoʻa, aia wale nō i ka makahiki 2015 e ka ʻoihana boom i lalo a ua emi iho nā hoʻololi noi i lalo, 2020 hiki i 7,2 miliona tons, kahi hoʻonui o 3,6% i hoʻohālikelike ʻia me 2019. ke hoʻololi nei ka vinyl acetate a me nā huahana ʻē aʻe, ua hoʻonui ʻia ka nui o ka hoʻohana ʻana, e ulu mau ka ʻoihana acetic acid holoʻokoʻa.

Ma nā ʻōlelo o nā noi i lalo, hoʻohana ʻia ka 25.6% o ka acetic acid e hana i ka PTA (purified terephthalic acid), 19.4% o ka acetic acid i hoʻohana ʻia e hana i ka vinyl acetate, a me 18.1% o ka acetic acid i hoʻohana ʻia e hana i ka ethyl acetate. I kēia mau makahiki i hala iho nei, ua paʻa ke ʻano o ka ʻoihana o nā derivatives acetic acid. Hoʻohana ʻia ʻo Vinyl acetate e like me kekahi o nā ʻāpana noi lalo o ka acetic acid.

2. ʻO ka hale lalo o ka vinyl acetate

Hoʻohana nui ʻia ʻo Vinyl acetate e hana i ka polyvinyl alcohol a me ka EVA, a me nā mea ʻē aʻe. ethylene vinyl acetate - ethylene copolymer (EVA), a pēlā aku. Hiki ke hoʻohana ʻia nā polymers e like me nā mea hoʻopili, pepa a i ʻole nā ​​mea hoʻohālikelike lole, pena, nā'īnika, kaʻiliʻili, nā emulsifiers, nā kiʻiʻoniʻoni wai, a me nā mea hoʻomaʻemaʻe lepo i loko o ke kemika, textile He nui nā mea hoʻohana i ka kemika, textile, māmāʻoihana, ka hana pepa, ke kūkuluʻana a me nā māla automotive. Hōʻike ka ʻikepili e hoʻohana ʻia ka 65% o ka vinyl acetate e hana i ka polyvinyl alcohol a me ka 12% o ka vinyl acetate e hoʻohana ʻia e hana i ka polyvinyl acetate.

Ka nānā ʻana i ke kūlana o kēia manawa o ka mākeke vinyl acetate

1、Vinyl acetate hiki ke hana a me ka helu hoʻomaka

Ma luna o 60% o ka mana hana vinyl acetate o ka honua i hoʻopaʻa ʻia ma ka ʻāina ʻo ʻAsia, ʻoiai ʻo ka vinyl acetate production capacity o Kina e pili ana i ka 40% o ka nui o ka mana hana o ka honua a ʻo ia ka ʻāina hana vinyl acetate nui loa o ka honua. Ke hoʻohālikelike ʻia me ke ʻano acetylene, ʻoi aku ka maikaʻi o ke ʻano o ka ethylene a me ke kaiapuni, me ka maʻemaʻe o ka huahana. Ma muli o ka hilinaʻi nui ʻana o ka mana ikehu o ka ʻoihana kemika o Kina i ka lanahu, ʻo ka hana ʻana o ka vinyl acetate e hoʻokumu nui ʻia ma ke ʻano acetylene, a he haʻahaʻa haʻahaʻa nā huahana. Ua hoʻonui nui ʻia ka mana hana vinyl acetate home i ka makahiki 2013-2016, ʻoiai ʻaʻole i hoʻololi ʻia i ka makahiki 2016-2018. Hōʻike ka ʻoihana vinyl acetate ʻo 2019 Kina i kahi kūlana overcapacity, me ka nui o ka hiki i ka calcium carbide acetylene process units a me ka ʻoihana kiʻekiʻe. 2020, ka mana hana vinyl acetate o Kina o 2.65 miliona tons / makahiki, palahalaha makahiki ma ka makahiki.

2、Ka hoʻohana ʻana i ka Vinyl acetate

E like me ka hoʻohana 'ana, China ka vinyl acetate e like me ka holoʻokoʻa hōʻike i ka fluctuating upward au, a me ka makeke no ka vinyl acetate ma Kina ua hoʻonui steadily ma muli o ka ulu o ka noi no downstream EVA, etc. , ʻO ka hoʻohanaʻana i ka vinyl acetate o Kina e nā kumu e like me ka piʻiʻana o nā kumukūʻai acetic acid, ua emi kaʻai, mai ka makahiki 2013 ua piʻi aʻe ka makemake o ka mākeke vinyl acetate o Kina. ʻO ka wikiwiki, ua piʻi ka hoʻohana ʻana i kēlā me kēia makahiki, e like me ka 2020 haʻahaʻa i hōʻea i 1.95 miliona tons, kahi hoʻonui o 4.8% i hoʻohālikelike ʻia me 2019.

3, ʻO ke kumukūʻai maʻamau o ka mākeke vinyl acetate

Mai ka hiʻohiʻona o nā kumukūʻai mākeke vinyl acetate, i hoʻopilikia ʻia e ka nui o ka hiki, ua paʻa mau nā kumukūʻai ʻoihana ma 2009-2020. ʻO 2014 e ka hoʻemi ʻana o nā lako o nā ʻāina ʻē, ua hoʻonui nui ʻia nā kumukūʻai huahana ʻoihana, hoʻonui nui nā ʻoihana kūloko i ka hana ʻana, ka hopena i ka overcapacity koʻikoʻi. Ua hāʻule nui nā kumukūʻai Vinyl acetate ma 2015 a me 2016, a ma 2017, i hoʻopilikia ʻia e nā kulekele mālama kaiapuni, piʻi nui nā kumukūʻai huahana ʻoihana. 2019, ma muli o ka lawa o ka lako i ka upstream acetic acid market a me ka lohi ana i ka noi ma ka downstream, ua hāʻule nui nā kumukūʻai huahana, a i ka makahiki 2020, i hoʻopilikia ʻia e ka maʻi ahulau, ua hāʻule hou ke kumu kūʻai o nā huahana, a ma Iulai 2021. ʻO nā kumukūʻai ma ka mākeke hikina ua hiki aku ma mua o 12,000 He nui ka piʻi ʻana o ke kumukūʻai, ʻo ia ka mea ma muli o ka hopena o nā lono maikaʻi o nā kumukūʻai ʻaila ma luna a me ka lako haʻahaʻa haʻahaʻa. ma muli o kekahi pani pani ʻana a i ʻole lohi.

ʻO ka nānā ʻana o nā hui Ethyl Acetate

Ethyl acetate Pākē hana māhele Sinopec 'ehā mau mea kanu i ka mana o 1.22 miliona tons / makahiki, helu no 43% o ka aina, a me Anhui Wanwei Group he 750,000 tons / makahiki, helu no 26.5%. ʻO ka māhele haole i hoʻopukapuka ʻia ʻo Nanjing Celanese 350,000 tons / makahiki, helu no 12%, a me ka māhele pilikino Inner Mongolia Shuangxin a me Ningxia Dadi huina 560,000 tons / makahiki, helu no 20%. Aia ka nui o nā mea hana vinyl acetate i kēia manawa ma Northwest, East China a me Southwest, me ka mana o Northwest no 51.6%, East China no 20.8%, North China no 6.4% a me Southwest no 21.2%.

Ka nānā 'ana o ka vinyl acetate outlook

1、EVA ka ulu ʻana o ka makemake

Hiki ke hoʻohana ʻia ʻo EVA ma lalo o ka vinyl acetate e like me ke kiʻiʻoniʻoni PV cell encapsulation. E like me ka honua hou ikehu pūnaewele, EVA mai ethylene a me ka vinyl acetate (VA) elua monomers e copolymerization pane, ka hapa nui o VA ma 5% -40%, ma muli o kāna hana maikaʻi, ua hoʻohana nui ʻia ka huahana i ka huʻa, hana. hoʻokahe kiʻiʻoniʻoni, kiʻi paʻi kiʻi ʻoniʻoni, nā huahana puhi puhi, hui pū ʻana a me nā mea hoʻopili, uea a me ke kaula, photovoltaic cell encapsulation film a me nā mea hoʻoheheʻe wela, etc. 2020 no ke kākoʻo photovoltaic i ka makahiki i hala, ua hoʻolaha nui nā poʻo poʻo home module i ka hoʻonui ʻia ʻana o ka hana, a me ka diversification o ka nui o ka module photovoltaic, ʻelua ʻaoʻao pālua-aniani module penetration rate piʻi nui loa, ke koi ʻia no nā modules photovoltaic ma mua o ka ulu i manaʻo ʻia. , hoʻoulu i ka ulu koi EVA. Manaʻoʻia e hoʻokomoʻia ka 800,000 tons o ka mana EVA i ka hana ma 2021. Wahi a ka manaʻo,ʻo ka uluʻana o 800,000 tons o ka mana hana EVA e hoʻoulu i ka ulu makahiki o 144,000 tons o ka vinyl acetate koi, e hoʻoikaika i ka ulu makahiki. o 103,700 tons o ka acetic acid koi.

2、Vinyl acetate overcapacity, pono nā huahana kiʻekiʻe e lawe ʻia mai

Loaʻa iā Kina ka nui o ka vinyl acetate, a pono e lawe ʻia nā huahana kiʻekiʻe. I kēia manawa, ʻoi aku ka nui o ka hāʻawi ʻana i ka vinyl acetate ma Kina i ka noi, me ka overcapacity holoʻokoʻa a me ka hana nui e hilinaʻi nei i ka hoʻohana ʻana i waho. Mai ka hoʻonui ʻia ʻana o ka mana hana vinyl acetate i ka makahiki 2014, ua hoʻonui nui ʻia nā huahana vinyl acetate o Kina, a ua hoʻololi ʻia kekahi mau huahana i lawe ʻia e ka mana hana hale. Eia kekahi, ʻo nā mea kūʻai aku o Kina he mau huahana haʻahaʻa haʻahaʻa, ʻoiai ʻo ka lawe ʻana mai i nā huahana kiʻekiʻe. I kēia manawa, pono mau ʻo Kina e hilinaʻi i ka lawe ʻana mai no nā huahana vinyl acetate kiʻekiʻe, a ʻo ka ʻoihana vinyl acetate he wahi no ka hoʻomohala ʻana i ka mākeke huahana kiʻekiʻe.