Litheko tsa 'maraka oa lik'hemik'hale li tsoetse pele ho theoha hoo e ka bang halofo ea selemo.Ho theoha ho joalo ha nako e telele, ha theko ea oli e ntse e le holimo, e lebisitse ho se leka-lekaneng ha boleng ba likhokahano tse ngata tsa ketane ea indasteri ea lik'hemik'hale.Ha li-terminals li ntse li eketseha ka har'a ketane ea indasteri, khatello e kholo ea litšenyehelo tsa ketane ea indasteri.Ka hona, lihlahisoa tse ngata tsa lik'hemik'hale hajoale li maemong a theko e phahameng empa 'maraka oa bareki o monyebe, e leng se bakang moruo o tlase oa tlhahiso ea lihlahisoa tse ngata tsa lik'hemik'hale.
Theko ea 'maraka ea vinyl acetate le eona e tsoetse pele ho theoha.Lilemong tsa morao tjena, theko ea 'maraka ea vinyl acetate e theohile ho tloha ho 14862 yuan/ton ka Phuptjane 2022 ho isa Phuptjane 2023, e ntse e theoha nako e ka etsang selemo, ha theko e tlase e theohela ho 5990 yuan/ton.Ho latela mekhoa ea theko ea lilemo tse 'maloa tse fetileng, theko e tlaase ka ho fetisisa historing e hlahile ka April 2020, theko e tlaase ka ho fetisisa e hlahile ho 5115 yuan/ton, theko e phahameng ka ho fetisisa e hlahile ka November 2021,' me theko e phahameng ka ho fetisisa e hlahile ho 16727 yuan/ton.

Le hoja theko ea vinyl acetate e ntse e fokotseha ka selemo se latellanang, phaello ea tlhahiso ea vinyl acetate e ntse e le holimo 'me moruo oa tlhahiso o molemo.Hobaneng ha vinyl acetate e ka boloka boemo bo phahameng ba nala?
Mekhoa e fapaneng ea tlhahiso ea vinyl acetate e fella ka phaello le tahlehelo e fapaneng
Ho ea ka phetoho ea sekhahla sa phaello ea vinyl acetate e hlahisoang ke mokhoa oa ethylene, tekanyo ea phaello ea vinyl acetate e hlahisoang ke mokhoa oa ethylene esale e le boemong bo nang le phaello lilemong tse 'maloa tse fetileng, phaello e phahameng ka ho fetisisa e fihlile ho 50% kapa ho feta, mme karolelano ea phaello e ka bang 15%.Ho ka bonoa hore ethylene e thehiloeng vinyl acetate e bile sehlahisoa se batlang se na le chelete e ngata lilemong tse peli tse fetileng, se nang le katleho e ntle ka kakaretso le menyetla e tsitsitseng ea phaello.

Ho ea ka pono ea mokhoa oa calcium carbide vinyl acetate, lilemong tse peli tse fetileng, ntle le phaello e kholo ho tloha ka Hlakubele 2022 ho isa Phupu 2022, linako tse ling kaofela li bile maemong a tahlehelo.Ho tloha ka Phuptjane 2023, tekanyo ea phaello ea mokhoa oa calcium carbide vinyl acetate e ne e le tahlehelo e ka bang 20%, 'me karolelano ea phaello ea mokhoa oa calcium carbide vinyl acetate lilemong tse peli tse fetileng e bile tahlehelo ea 0.2%.Ho ka bonoa hore katleho ea mokhoa oa calcium carbide bakeng sa vinyl acetate e futsanehile, 'me boemo ba kakaretso bo bontša tahlehelo.

Ho ka bonoa hore ha se ntho e tloaelehileng hore vinyl acetate e be boemong bo phahameng ba phaello.Ke mokhoa oa ethylene feela oa tlhahiso ea vinyl acetate hona joale o boemong bo nang le phaello, ha mokhoa oa carbide o ntse o le boemong ba tahlehelo lilemong tse 'maloa tse fetileng.
Tlhahlobo ea ho boloka phaello e phahameng ea tlhahiso ea ethylene e thehiloeng ho vinyl acetate
1. Karolo ea litšenyehelo tsa thepa e tala e fapana ka mekhoa e fapaneng ea tlhahiso.Ka tlhahiso ea ethylene e thehiloeng ho vinyl acetate, tšebeliso ea yuniti ea ethylene ke 0.35 mme tšebeliso ea yuniti ea glacial acetic acid ke 0.72.Ho latela sekhahla sa theko ka Phuptjane 2023, karolo ea ethylene tlhahisong ea vinyl acetate e ka bang 37%, ha glacial acetic acid e le 45%.Ka hona, ho fetoha ha theko ea glacial acetic acid ho na le tšusumetso e kholo ka ho fetisisa phetohong ea litšenyehelo tsa tlhahiso ea ethylene e thehiloeng vinyl acetate, e lateloa ke ethylene.
Ha e le litšenyehelo tsa mokhoa oa calcium carbide bakeng sa vinyl acetate, calcium carbide e etsa hoo e ka bang 47% ea litšenyehelo tsa mokhoa oa calcium carbide bakeng sa vinyl acetate, 'me glacial acetic acid e etsa karolo ea 35% ea litšenyehelo tsa mokhoa oa calcium carbide bakeng sa vinyl acetate.Ka hona, ka mokhoa oa calcium carbide oa vinyl acetate, phetoho ea theko ea calcium carbide e na le tšusumetso e kholo ho theko, e fapaneng haholo le phello ea litšenyehelo tsa mokhoa oa ethylene.
2. Ho fokotseha ho hoholo ha lihlahisoa tsa ethylene le glacial acetic acid ho entse hore ho be le ho fokotseha ho hoholo ha litšenyehelo.Ho ea ka lintlha tse amehang, selemong se fetileng, theko ea CFR Northeast Asia ethylene e theohile ka 33%, 'me theko ea glacial acetic acid e theohile ka 32%.Leha ho le joalo, theko ea tlhahiso ea vinyl acetate e sebelisang mokhoa oa calcium carbide e lekanyelitsoe haholo-holo ke theko ea calcium carbide.Selemong se fetileng, theko ea calcium carbide e theohile ka 25%.
Ka hona, ho latela pono ea mekhoa e 'meli e fapaneng ea tlhahiso, theko ea thepa e tala ea mokhoa oa ethylene vinyl acetate e fokotsehile haholo,' me phokotso ea litšenyehelo e kholo ho feta ea mokhoa oa calcium carbide.

3. Le hoja theko ea vinyl acetate e fokotsehile, ho fokotseha ha ho bohlokoa joaloka lik'hemik'hale tse ling.Selemong se fetileng, theko ea vinyl acetate e fokotsehile ka 59%, e bonahalang e fokotseha haholo, empa theko ea lik'hemik'hale tse ling e fokotsehile le ho feta.
Vinyl acetate e 'nile ea boloka moeli o itseng oa phaello, haholo-holo ka lebaka la phokotso ea litšenyehelo e bakoang ke ho fokotseha ha litheko tsa thepa e tala, ho e-na le tšehetso ea' maraka oa bareki bakeng sa litheko tsa eona.Hona hape ke boemo ba hajoale ba phetisetso ea boleng ho ketane ea indasteri ea vinyl acetate.Ho tloha boemong ba hona joale ba 'maraka oa lik'hemik'hale oa Chaena ka nako e khutšoanyane, ho thata ho fetola boemo bo fokolang ba' maraka oa lik'hemik'hale oa Chaena ntle le maano a maholo a khothatso ea 'maraka oa bareki.Ho lebelletsoe hore ketane ea boleng ba vinyl acetate e tla tsoela pele ho boloka mohopolo o tlase oa phetisetso, mme ho lebelletsoe hore phaello ea tlhahiso nakong e tlang ea 'maraka oa bareki, haholo-holo bakeng sa lihlahisoa tsa polyethylene le EV, e tla bolokoa ka ho fokotsa phaello ea vinyl. acetate.