Mitengo ya msika wa mankhwala yapitirizabe kuchepa kwa theka la chaka.Kutsika kwanthawi yayitali kotereku, pomwe mitengo yamafuta ikadali yokwera, yadzetsa kusalinganika pamtengo wa maulalo ambiri pamakampani opanga mankhwala.Kuchulukirachulukira kwa materminal mumayendedwe a mafakitale, kumapangitsanso kupanikizika kwamitengo yamakampani.Chifukwa chake, mankhwala ambiri pakali pano ali pamtengo wokwera koma msika wogula waulesi, zomwe zikupangitsa kuti zinthu zambiri zamakhemikolo zikhale zotsika mtengo.
Mtengo wamsika wa vinyl acetate wapitilirabe kutsika.Zaka zaposachedwa, mtengo wamsika wa vinyl acetate watsika kuchoka pa 14862 yuan/ton mu June 2022 mpaka June 2023, ukutsika mosalekeza kwa pafupifupi chaka chimodzi, ndipo mtengo wotsika kwambiri ukutsikira ku 5990 yuan/ton.Kuchokera pamitengo yazaka zingapo zapitazi, mtengo wotsika kwambiri m'mbiri yonse udawoneka mu Epulo 2020, mtengo wotsika kwambiri udawoneka pa 5115 yuan/tani, mtengo wapamwamba kwambiri udawoneka mu Novembala 2021, ndipo mtengo wapamwamba kwambiri udawoneka pa 16727 yuan/ton.

Ngakhale mtengo wa vinyl acetate wakhala ukutsika kwa chaka chotsatira, phindu la vinyl acetate limakhalabe lokwera ndipo chuma chopanga ndi chabwino.Chifukwa chiyani vinyl acetate ikhoza kukhalabe yotukuka kwambiri?
Njira zosiyanasiyana zopangira vinyl acetate zimabweretsa phindu ndi kutayika kosiyanasiyana
Malinga ndi kusintha kwa phindu la vinyl acetate opangidwa ndi njira ya ethylene, phindu la vinyl acetate lopangidwa ndi njira ya ethylene nthawi zonse limakhala lopindulitsa m'zaka zingapo zapitazi, phindu lalikulu lafika 50% kapena kuposa, ndipo phindu lapakati ndi pafupifupi 15%.Zitha kuwoneka kuti ethylene based vinyl acetate yakhala yopindulitsa kwambiri m'zaka ziwiri zapitazi, yokhala ndi chitukuko chabwino chonse komanso malire okhazikika a phindu.

Malinga ndi njira ya calcium carbide vinyl acetate, m'zaka ziwiri zapitazi, kupatula phindu lalikulu kuyambira Marichi 2022 mpaka Julayi 2022, nthawi zina zonse zidatayika.Pofika mu June 2023, kuchuluka kwa phindu la njira ya calcium carbide vinyl acetate inali pafupifupi 20% kutayika, ndipo phindu lapakati pa njira ya calcium carbide vinyl acetate m'zaka ziwiri zapitazi inali kutayika kwa 0.2%.Zitha kuwoneka kuti kutukuka kwa njira ya calcium carbide ya vinyl acetate ndi yosauka, ndipo zonse zikuwonetsa kutayika.

Zitha kuwoneka kuti sizomwe zimachitika kuti vinyl acetate ikhale yopindulitsa kwambiri.Njira yokhayo ya ethylene yopanga vinyl acetate pakali pano ili yopindulitsa, pamene njira ya carbide yakhala ikutayika m'zaka zingapo zapitazi.
Kuwunika kosunga phindu lalikulu la ethylene based vinyl acetate production
1. Kuchuluka kwa ndalama zopangira zinthu kumasiyana mosiyanasiyana.Mu ethylene based vinyl acetate production, unit of ethylene is 0,35 and unit of glacial acetic acid is 0,72.Malinga ndi kuchuluka kwamitengo mu June 2023, gawo la ethylene mu ethylene based vinyl acetate kupanga pafupifupi 37%, pomwe glacial acetic acid ndi 45%.Chifukwa chake, kusinthasintha kwamitengo ya glacial acetic acid kumakhudza kwambiri kusintha kwa mtengo wa ethylene based vinilu acetate kupanga, kutsatiridwa ndi ethylene.
Ponena za mtengo wa njira ya calcium carbide ya vinilu acetate, calcium carbide imatenga pafupifupi 47% ya mtengo wa njira ya calcium carbide ya vinyl acetate, ndipo glacial acetic acid imatenga pafupifupi 35% ya mtengo wa njira ya calcium carbide ya vinyl acetate.Choncho, mu njira ya calcium carbide ya vinyl acetate, kusintha kwa mtengo wa calcium carbide kumakhudza kwambiri mtengo, womwe ndi wosiyana kwambiri ndi mtengo wa njira ya ethylene.
2. Kutsika kwakukulu kwa zipangizo za ethylene ndi glacial acetic acid kwachititsa kuti pakhale kuchepa kwakukulu kwa ndalama.Malinga ndi deta yoyenera, m'chaka chatha, mtengo wa CFR Northeast Asia ethylene watsika ndi 33%, ndipo mtengo wa glacial acetic acid watsika ndi 32%.Komabe, mtengo wopangira vinyl acetate pogwiritsa ntchito njira ya calcium carbide umakhala wochepa kwambiri ndi mtengo wa calcium carbide.M'chaka chatha, mtengo wa calcium carbide watsika ndi 25%.
Choncho, potengera njira ziwiri zosiyana zopangira, mtengo wa ethylene njira ya vinyl acetate watsika kwambiri, ndipo kuchepetsa mtengo ndi kwakukulu kuposa njira ya calcium carbide.

3. Ngakhale mtengo wa vinyl acetate watsika, kuchepa kwake sikuli kofunikira monga mankhwala ena.M'chaka chapitacho, mtengo wa vinyl acetate watsika ndi 59%, zomwe zikuwoneka kuti ndizochepa kwambiri, koma mtengo wa mankhwala ena watsika kwambiri.
Vinyl acetate nthawi zonse imakhala ndi phindu linalake, makamaka chifukwa cha kutsika kwa mtengo chifukwa cha kuchepa kwa mitengo yamtengo wapatali, m'malo mothandizidwa ndi msika wa ogula pamitengo yake.Umu ndi momwe zilili pano pakufalitsa kwamtengo wapatali mumndandanda wamakampani a vinyl acetate.Kuchokera pazomwe zikuchitika pamsika wamankhwala waku China kwakanthawi kochepa, ndizovuta kusintha kwenikweni kufooka kwa msika wamankhwala waku China popanda mfundo zazikulu zolimbikitsira msika wa ogula.Zikuyembekezeka kuti unyolo wamtengo wapatali wa vinyl acetate upitilize kusunga malingaliro otsika, ndipo akuyembekezeka kuti phindu lomwe limapanga pamsika wa ogula mtsogolo, makamaka pazogulitsa za polyethylene ndi EV, zidzasungidwa pakuchepetsa phindu la vinyl. acetate.