Ngokwezibalo zowama-2020, amandla emveliso yePVC kwihlabathi liphela afikelele kwiitoni ezingama-62 ezigidi kwaye imveliso iyonke ifikelele kwiitoni ezingama-54 ezigidi. Konke ukuncitshiswa kwemveliso kuthetha ukuba amandla emveliso awazange asebenze nge-100%. Ngenxa yeentlekele zemvelo, imigaqo-nkqubo yasekuhlaleni kunye nezinye izinto, imveliso kufuneka ibe ngaphantsi kwamandla emveliso. Ngenxa yeendleko eziphezulu zemveliso yePVC eYurophu naseJapan, amandla emveliso yePVC kwihlabathi liphela agxile kakhulu kuMntla-mpuma weAsia, apho iTshayina inesiqingatha samandla emveliso yePVC kwihlabathi liphela.
Ngokwedatha yomoya, ngo-2020, iTshayina, iMelika kunye neJapan ziindawo ezibalulekileyo zemveliso yePVC ehlabathini, apho amandla emveliso abalelwa kwi-42%, 12% kunye ne-4% ngokwahlukeneyo. Ngo-2020, amashishini amathathu aphezulu kumandla emveliso yonyaka yePVC yehlabathi yayiyiWestlake, iShintech kunye neFPC. Ngo-2020, amandla emveliso yonyaka yePVC yayiziitoni ezi-3.44 yezigidi, iitoni ezi-3.24 yezigidi kunye neetoni ezi-3.299 yezigidi ngokwahlukeneyo. Okwesibini, amashishini anomthamo wemveliso ongaphezulu kwezigidi ezi-2 zeetoni nawo aquka i-inovyn. Amandla emveliso iyonke yaseTshayina angama-25 ezigidi zeetoni, kunye nemveliso yeetoni ezi-21 ezigidi ngo-2020. Kukho abavelisi bePVC abangaphezu kwama-70 eTshayina, ama-80% abo ayindlela ye-calcium carbide kwaye ama-20% ayindlela ye-ethylene.
Uninzi lwendlela ye-calcium carbide igxile kwiindawo ezityebileyo kwimithombo yamalahle efana ne-Inner Mongolia kunye ne-Xinjiang. Indawo yesityalo apho inkqubo ye-ethylene ifumaneka khona ikwiindawo ezikunxweme kuba kufuneka kungeniswe izinto eziluhlaza ze-VCM okanye i-ethylene. Amandla emveliso yaseTshayina amalunga nesiqingatha sehlabathi, kwaye ngokwandiswa okuqhubekayo kwekhonkco lemizi-mveliso laseTshayina, amandla emveliso ye-PVC yendlela ye-ethylene aya kuqhubeka esanda, kwaye iTshayina iya kuqhubeka nokutshabalalisa isabelo se-PVC samazwe ngamazwe.
Ixesha lokuthumela: Meyi-07-2022