PVC wani nau'in filastik ne da ake amfani da shi sosai a kayan gini. Saboda haka, ba za a sake maye gurbinsa na dogon lokaci a nan gaba ba, kuma zai sami damar amfani mai kyau a yankunan da ba su da ci gaba a nan gaba.
Kamar yadda muka sani, akwai hanyoyi guda biyu na samar da PVC, ɗaya ita ce hanyar ethylene ta duniya baki ɗaya, ɗayan kuma ita ce hanyar calcium carbide ta musamman a China. Tushen hanyar ethylene galibi man fetur ne, yayin da tushen hanyar calcium carbide galibi kwal ne, dutse mai laushi da gishiri. Waɗannan albarkatun galibi suna cikin China. Na dogon lokaci, hanyar PVC ta calcium carbide ta China ta kasance a kan gaba. Musamman daga 2008 zuwa 2014, ƙarfin samar da PVC ta hanyar calcium carbide ta China yana ƙaruwa, amma kuma ya kawo matsaloli da yawa na kare muhalli.
Amfani da wutar lantarki na samar da sinadarin calcium carbide yana da yawa sosai, don haka wannan zai haifar da wasu ƙalubale ga samar da wutar lantarki a China. Saboda wutar lantarki tana samuwa ne ta hanyar ƙona kwal, tana buƙatar cinye kwal mai yawa, don haka ƙone kwal zai gurɓata yanayi. Duk da haka, China ta yi wasu canje-canje a cikin manufofi tsawon shekaru. China tana ci gaba da haɓaka sarkar masana'antarta. Yanzu za mu iya ganin cewa China ta shigo da mai da yawa, kuma ana ƙarfafa kamfanonin gida su shigo da mai don tace kayayyakin da ke ƙasa. Saboda haka, a cikin 'yan shekarun nan, an ƙara sabbin masana'antun ethylene da yawa a China, kuma duk sabon ƙarfin samar da PVC a China a cikin 'yan shekarun nan shine ƙarfin samar da tsarin ethylene. Ƙarfin samar da hanyar calcium carbide ta China ya dakatar da sabon amincewa. Saboda haka, nan gaba kaɗan, adadin masana'antun ethylene a China zai ci gaba da ƙaruwa kuma tsarin calcium carbide zai ci gaba da raguwa. A nan gaba, yawan fitar da ethylene na China zai ci gaba da ƙaruwa, kuma a hankali ya zama babban mai fitar da ethylene na PVC a duniya.
Lokacin Saƙo: Mayu-07-2022