Ua hoʻomau ka emi ʻana o nā kumukūʻai makeke no ka hapalua makahiki.ʻO ia ʻano hāʻule lōʻihi, ʻoiai e mau ana ke kumukūʻai aila kiʻekiʻe, ua alakaʻi i kahi kaulike ʻole i ka waiwai o ka hapa nui o nā loulou i ke kaulahao ʻoihana kemika.ʻOi aku ka nui o nā terminals i loko o ke kaulahao ʻoihana, ʻoi aku ka nui o ke kaomi ʻana i ke kumukūʻai o ke kaulahao ʻoihana.No laila, nui nā huahana kemika i kēia manawa i ke kumu kūʻai kiʻekiʻe akā lohi ka mākeke mea kūʻai aku, e hopena i ka hoʻokele waiwai o nā huahana kemika.
Ua hoʻomau ka emi ʻana o ke kumukūʻai kūʻai o vinyl acetate.I nā makahiki i hala iho nei, ua hāʻule ke kumukūʻai kūʻai o vinyl acetate mai 14862 yuan / ton i Iune 2022 a Iune 2023, e emi mau ana no kahi makahiki hoʻokahi, me ke kumukūʻai haʻahaʻa e hāʻule ana i 5990 yuan / ton.Mai nā kumu kūʻai o nā makahiki i hala iho nei, ua ʻike ʻia ke kumukūʻai haʻahaʻa loa ma ka mōʻaukala ma ʻApelila 2020, ʻike ʻia ke kumu kūʻai haʻahaʻa loa ma 5115 yuan/ton, ʻike ʻia ke kumukūʻai kiʻekiʻe loa i Nowemapa 2021, a ʻo ke kumu kūʻai kiʻekiʻe loa i 16727 yuan/ton.

ʻOiai ke emi nei ke kumukūʻai o ka vinyl acetate no hoʻokahi makahiki, ʻoi aku ka kiʻekiʻe o ka loaʻa kālā o ka vinyl acetate a maikaʻi ka hoʻokele waiwai.No ke aha e hiki ai i ka vinyl acetate ke mālama i kahi kiʻekiʻe o ka pōmaikaʻi?
ʻO nā kaʻina hana like ʻole no ka vinyl acetate ka hopena i nā loaʻa kālā a me nā poho
E like me ka hoʻololi ʻana o ka loaʻa kālā o ka vinyl acetate i hana ʻia e ke ʻano ethylene, ʻo ka nui o ka loaʻa kālā o ka vinyl acetate i hana ʻia e ke ʻano ethylene i loko o kahi kūlana maikaʻi i nā makahiki i hala iho nei, ua hiki ke kiʻekiʻe loa o ka loaʻa kālā ma 50% a ʻoi aku paha. a ʻo ka awelika o ka loaʻa kālā ma kahi o 15%.Hiki ke ʻike ʻia ʻo ka vinyl acetate i hoʻokumu ʻia i ka ethylene he huahana maikaʻi loa i nā makahiki ʻelua i hala, me ka pōmaikaʻi holoʻokoʻa maikaʻi a me nā palena waiwai paʻa.

Mai ka hiʻohiʻona o ka calcium carbide method vinyl acetate, i nā makahiki ʻelua i hala iho nei, koe wale nō ka loaʻa kālā nui mai Malaki 2022 a Iulai 2022, aia nā manawa ʻē aʻe a pau i ke kūlana o ka poho.I ka mahina o Iune 2023, ʻo ka nui o ka loaʻa kālā o ka calcium carbide method vinyl acetate ma kahi o 20% nalowale, a ʻo ka awelika o ka loaʻa kālā o ka calcium carbide method vinyl acetate i nā makahiki ʻelua i hala he 0.2%.Hiki ke ʻike ʻia he ʻilihune ka pōmaikaʻi o ke ʻano calcium carbide no ka vinyl acetate, a ke hōʻike nei ke kūlana holoʻokoʻa i kahi poho.

Hiki ke ʻike ʻia ʻaʻole ia he mea maʻamau no ka vinyl acetate i kahi pae kiʻekiʻe.ʻO ke ʻano ethylene wale nō o ka vinyl acetate production i kēia manawa i kahi kūlana maikaʻi, ʻoiai ke ʻano o ka carbide i kahi kūlana pohō i nā makahiki i hala.
Ka ʻike no ka mālama ʻana i ka loaʻa kālā kiʻekiʻe o ka ethylene based vinyl acetate production
1. ʻOkoʻa ka māhele o nā kumukūʻai maka i nā kaʻina hana like ʻole.I ka hana ʻana i ka vinyl acetate ethylene, ʻo ka hoʻohana ʻana o ka ethylene he 0.35 a ʻo ka hoʻohana ʻana o ka waikawa acetic glacial he 0.72.Wahi a ka pae kumu kūʻai ma Iune 2023, ʻo ka hapa o ka ethylene i ka ethylene based vinyl acetate production ma kahi o 37%, aʻo ka glacial acetic acid he 45%.No laila, ʻo ke kumukūʻai o ka glacial acetic acid ka hopena nui loa i ka hoʻololi kumukūʻai o ka hana vinyl acetate ethylene, a ukali ʻia e ka ethylene.
No ke kumu kūʻai o ke ʻano calcium carbide no ka vinyl acetate, ʻo ka calcium carbide e pili ana i ka 47% o ke kumukūʻai o ke ʻano calcium carbide no vinyl acetate, a ʻo ka glacial acetic acid e pili ana i 35% o ke kumu kūʻai o ke ʻano calcium carbide no ka vinyl acetate.No laila, ma ke ʻano calcium carbide o vinyl acetate, ʻoi aku ka nui o ka hoʻololi ʻana i ke kumukūʻai o ka calcium carbide i ke kumu kūʻai, ʻokoʻa loa ia mai ka hopena o ke kumu kūʻai o ke ʻano ethylene.
2. ʻO ka emi nui o nā mea maka ethylene a me ka glacial acetic acid ua alakaʻi i ka emi nui o nā kumukūʻai.Wahi a nā ʻikepili kūpono, i ka makahiki i hala, ua emi ke kumukūʻai o CFR Northeast Asia ethylene e 33%, a ua emi ke kumukūʻai o ka glacial acetic acid e 32%.Eia nō naʻe, ʻo ke kumu kūʻai o ka vinyl acetate me ka hoʻohana ʻana i ke ala calcium carbide i kaupalena ʻia e ke kumu kūʻai o ka calcium carbide.I ka makahiki i hala iho nei, ua emi ke kumukūʻai o ka calcium carbide e 25%.
No laila, mai ka hiʻohiʻona o nā kaʻina hana like ʻole ʻelua, ua emi nui ke kumukūʻai maka o ka ethylene method vinyl acetate, a ʻoi aku ka nui o ka hoʻemi ʻana ma mua o ke ʻano o ka calcium carbide method.

3. ʻOiai ua emi ke kumukūʻai o ka vinyl acetate, ʻaʻole nui ka emi ʻana e like me nā kemika ʻē aʻe.I ka makahiki i hala iho nei, ua emi ke kumukūʻai o ka vinyl acetate e 59%, i ʻike ʻia he emi nui, akā ʻoi aku ka emi o ke kumukūʻai o nā kemika ʻē aʻe.
Ua mālama mau ʻo Vinyl acetate i kahi ʻāpana waiwai, ʻoi loa ma muli o ka hōʻemi ʻana i ke kumukūʻai i hoʻemi ʻia e ka emi ʻana o nā kumukūʻai maka, ma mua o ke kākoʻo ʻana o ka mākeke kūʻai no kāna mau kumukūʻai.ʻO kēia hoʻi ke kūlana o kēia manawa o ka hoʻoili waiwai ma ke kaulahao ʻoihana vinyl acetate.Mai ke kūlana o kēia manawa o ka mākeke kemika Kina i ka wā pōkole, he paʻakikī ke hoʻololi maoli i ke kūlana nāwaliwali o ka mākeke kemika Kina me ka ʻole o nā kulekele hoʻoulu ʻia o nā mea kūʻai aku.Ua manaʻo ʻia e hoʻomau ʻia ke kaulahao waiwai o ka vinyl acetate e hoʻomau i ka logic transmission downward, a ua manaʻo ʻia ʻo ka loaʻa ʻana o ka loaʻa kālā ma ka mākeke mea kūʻai aku e hiki mai ana, ʻoi aku hoʻi no nā huahana polyethylene a me EV, e mālama ʻia ma ka hoʻemi ʻana i ka loaʻa kālā o ka vinyl. acetate.