Kakaretso ea phepelo ea leqhoaasiti ea aceticmaraka ka Phato e phahame, 'me ba bang ba tlase ba ntse ba le ka ntle ho nako, kahoo tlhokahalo ea asiti ea acetic e ka fokotsoa. Kaha ho na le likhoebo tse fokolang tsa ntlafatso khoeling ena, ke Shanghai Huayi le Dalian Hengli feela ba nang le merero ea ntlafatso, phepelo e ntse e le holimo, 'me thepa ea feme e maemong a holimo-limo. Ho thata ho tšehetsa keketseho ea theko hobane ho na le lintlha tse ngata tse mpe 'marakeng oa nakoana oa glacial acetic acid.

Lilemong tsa morao tjena, matla a tlhahiso ea glacial acetic acid le liindasteri tsa eona tse ka sehloohong tse ka tlaase ho metsi li bontšitse mokhoa o ntseng o hōla. Leha ho le joalo, phetisetso ea phaello ka har'a ketane ea indasteri ha e leka-lekane. Nakong e tlang, e tla lula e le e 'ngoe ea lintho tse susumetsang phaello le tlhokahalo ea katoloso. Matla a phepelo ea glacial acetic acid e tlameha ho nyoloha le ho feta. Ka nako eo, tekanyo pakeng tsa phepelo le tlhokahalo e tla robeha.

Le hoja bokhoni ba tlhahiso ea glacial acetic acid bo ntse bo eketseha butle-butle, tšebeliso e boetse e bontša mokhoa oa ho hōla, empa phetisetso ea phaello lefapheng la indasteri ha e leka-lekane, 'me boemo ba phaello ho tse ling tse ka tlaase ho metsi bo ke ke ba boleloa hore bo nepahetse.

Matla a tlhahiso ea asiti ea glacial a ntse a eketseha butle-butle

Nakong ea 2018-2022, tlhahiso ea glacial acetic acid naheng ea China e ile ea eketseha butle-butle, e tšehetsoa ke nts'etsopele ea tlhoko e tlase le phaello e ntle. Ho tloha ka 2022, bokhoni bo sebetsang ba selemo le selemo ba glacial acetic acid ke lithane tse limilione tse 10.46, ho nyoloha ka 18 t.86% ho tloha 2018.

Lilemong tse hlano tse fetileng, theko ea kakaretso ea glacial acetic acid e ntse e nyoloha, e tšehetsoa ke tlhoko e ntseng e eketseha ea lehae le mmaraka o sebetsang oa ho romela kantle ho naha. Ka nako e ts'oanang, e bolokile phapang e kholo ea theko ka methanol e tala hangata, e bakang phaello e matla le nako e telele ea phaello.

Ka 2017-2018, semela sa kantle ho naha sa glacial acetic acid se ne se sa tsitsa, mme 'maraka oa kantle ho naha o fane ka tšehetso bakeng sa mmaraka oa lapeng. Ho feta moo, ka ho fokotseha ha matla a glacial acetic acid le katoloso ea matla a ho theosa le noka, tlhokahalo ea glacial acetic acid e sa tsoa eketseha, e ileng ea tšehetsa ho phahama ha litheko tsa lehae tsa glacial acetic acid. Leha mokhoa ona o ts'oana le oa methanol e tala, phapang ea theko e ntse e hola mme phaello ea phaello ea eketseha. ka 2018, phaello e akaretsang ea theory 'marakeng oa China bochabela e ne e ka ba 1,753 yuan/ton. ka 2019-2020, tlhahiso ea glacial acetic acid ea malapeng e ntse e phahama butle-butle mme phepelo ea eketseha. Tlhokahalo e fokotseha ka mekhahlelo ka lebaka la lintlha tse neng li sa lebelloa. Litheko tsa lapeng tsa glacial acetic acid lia fetoha, 'me phapang ea theko le methanol e fokotseha ho isa bohōleng bo itseng. ka 2020, phaello e akaretsang ea theory 'marakeng oa China e ka bochabela e ka ba 504 yuan/ton. ka 2021, leha litheko tsa methanol le glacial acetic acid li ntse li nyoloha, theko ea glacial acetic acid e nyoloha ho feta ka lebaka la keketseho ea tlhoko ea lehae le kantle le phokotseho ea phepelo, e leng se etsang hore phapang ea theko lipakeng tsa tse peli e tsoelepele ho eketseha. atolosa. Palo ea kakaretso ea selemo le selemo 'marakeng oa East China e ne e le RMB399/ton.41%.

Leha phaello e ne e le ngata haholo, tlhokeho e tlase ea noka e bonts'itse kholo e tsoelang pele, ea etsa hore bahlahisi ba seng ba ntse ba le teng le libapali tse ncha tsa mebaraka ho theha merero e mecha ea glacial acetic acid, eo boholo ba eona le eona e ileng ea kengoa tšebetsong.

Tlhokahalo ea nakong e tlang e ntse e eketseha

Ho ntse ho e-na le merero ea bokhoni bo bocha bakeng sa lihlahisoa tse ngata tse ka tlaase ho metsi nakong e tlang, e leng ho tsamaisang khōlo e tsoelang pele ea matla a phepelo ea glacial acetic acid.

Ho tloha 2021 ho isa 2022, bokhoni ba tlhahiso ea EVA bo ntse bo hola ka potlako mme lihlahisoa le tsona li ntse li atamela kholo e phahameng ea VA vinyl acetate content, ka keketseho e kholo ea tlhokahalo ea vinyl acetate, katoloso ea matla a tlhahiso ea vinyl acetate, le khaello e hlahelletseng ea phepelo ea carbide e seng calcium. Ho tloha ka 2022, phepelo e 'ngoe ea calcium carbide e ekelitsoe ho basebelisi ba phepelo ea ethylene ea mantlha, mokhoa oa China oa phepelo ea ethylene acetate o fetohile ho tloha ho tlatsetso ea sebopeho ho ea ho tsitsipano ea sebopeho. EVA e nahana ka mokhoa o itseng oa ho iketsetsa ethylene acetate ka lebaka la bothata bo ntseng bo eketseha le litšenyehelo tsa theko ea basebelisi. Ho fihlela ka nako eo, merero e mengata e ntseng e hahuoa e ntse e tsoela pele mme bokhoni ba tlhahiso ea ethylene vinyl acetate bo tla lokolloa ka 2023.

Ethyl acetate le eona ke e 'ngoe ea lihlahisoa tse kholo tse tlase tsa glacial acetic acid. Lilemong tsa morao tjena, likhohlano lipakeng tsa phepelo le tlhoko ea ethyl acetate e bile tse hlahelletseng, mme sekhahla sa kholo ea bokhoni se batla se lieha. 2022-2023, bokhoni bo bocha bo ntse bo fumaneha haholo lik'hamphaning tse seng li ntse li le teng, haholo-holo ho holisa karolo ea indasteri, ho fokotsa litšenyehelo le ho ntlafatsa ts'ebetso. Ho phaella moo, ka mokhoa oa hona joale oa ho kopanya indastering ea petrochemical e ntse e bonahala haholoanyane, lik'hamphani tse ling li rera ho haha ​​​​limela tse ncha tsa ethyl acetate ho atolosa ketane ea indasteri. Leha ho le joalo, ka lebaka la ts'ebetso e bonolo ea tlhahiso ea ethyl acetate, phetoho e potlakileng ea thepa ea malapeng le tlhahiso e feto-fetohang, haholo-holo e itšetlehileng ka litšenyehelo le tlhokahalo ea liphetoho, sekhahla sa kholo ea lihlahisoa se ntse se lieha lilemong tsa morao tjena.

Mabapi le acetic anhydride, lilemong tsa morao tjena, lisebelisoa tse ncha le lisebelisoa tse sa sebetseng li teng, 'me phepelo e akaretsang e bontša mokhoa oa ho hōla. Ho latela pono ea sebopeho sa tšebeliso, e sebelisoa haholo tlhahisong ea fiber ea acetate, li-intermediate tsa meriana, li-intermediate tsa chefo e bolaeang likokoanyana, linoko, lidae, li-additives tsa lijo, li-chemical dehydration agents le masimo a mang. Limela tse ling tsa lehae tsa acetic fiber li na le limela tsa acetic anhydride, 'me ho kopanya masimong a mang ha ho holimo. Nakong e tlang, limela tsa acetic anhydride li tla be li ntse li hahuoa. Ningxia Donghe o rera ho kenya lithane tse 150,000 ts'ebetsong halofong ea bobeli ea selemo sena. Henan Ruibai o boetse o rera ho haha ​​​​semela se secha sa acetic anhydride, mme matla a tlhahiso ea indasteri a lebelletsoe ho tsoela pele ho hola. Acetic anhydride e na le mefuta e mengata ea libaka tse ka tlaase ho metsi 'me ho ntse ho e-na le sebaka sa ho hōla ka lehlakoreng la tlhokahalo, empa ka keketseho ea bokhoni ba tlhahiso, indasteri e tla ba le tlhōlisano e eketsehileng.

Merero e meng e mecha ea glacial acetic acid nakong e tlang, tekanyo ea phepelo le tlhokahalo e kanna ea robeha
Ts'ebetso e ntle ea phaello lilemong tsa morao tjena, hammoho le keketseho e tsoelang pele ea tlhokahalo e tlase ea noka, ho etsa hore phepelo ea glacial acetic acid e lule e eketseha, 'me lilemo tse tharo tse latelang le tsona.

Tafole e ka holimo e bontša tse ling tsa merero e mecha ea bokhoni ba glacial acetic acid lilemong tse tharo tse tlang, ho phaella ho lik'hamphani tse ling hape li na le merero e mecha ea kaho le katoloso, ho ka bonoa hore glacial acetic acid e kholo ea bokamoso e ntse e lebeletsoe hore e be e batlang e lekana. e kgolo. Leha tlhokeho e tlase ea noka le eona e tla ba le keketseho e tsitsitseng, empa hore na e ka monya ka botlalo phepelo e ntseng e eketseha ea glacial acetic acid e sa ntse e tla hlokomeloa, 'me ho ke ke ha qheleloa ka thoko hore glacial acetic acid naheng ea China e tla ba le matla a feteletseng.

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