Amaxabiso emarike yeekhemikhali aqhubekile ehla malunga nesiqingatha sonyaka. Ukwehla kwexesha elide ngolo hlobo, ngelixa amaxabiso e-oyile ehleli ephezulu, kukhokelele ekungalinganini kwexabiso leekhonkco ezininzi kwikhonkco leshishini lemichiza. Okukhona iitheminali ezininzi kwikhonkco lemizi-mveliso, kokukhona uxinzelelo olukhulu kwiindleko zetsheyini yoshishino. Ke ngoko, uninzi lweemveliso zemichiza okwangoku zikwimeko yexabiso eliphezulu kodwa intengiso yabathengi ecothayo, ekhokelela kuqoqosho olulambathayo lwemveliso yeemveliso ezininzi zemichiza.
Ixabiso lemarike ye-vinyl acetate liye laqhubeka nokuhla. Kwiminyaka yakutshanje, ixabiso lemarike ye-vinyl acetate lehlile ukusuka kwi-14862 yuan/ton ngoJuni ka-2022 ukuya kuJuni ka-2023, ngokuqhubekayo ukuhla malunga nonyaka, ngexabiso eliphantsi lehla ukuya kwi-5990 yuan/ton. Ukusuka kwiindlela zamaxabiso zeminyaka embalwa edlulileyo, elona xabiso liphantsi kwimbali livele ngo-Epreli 2020, elona xabiso liphantsi livele kwi-5115 yuan / ton, elona xabiso liphezulu lavela ngoNovemba 2021, kwaye elona xabiso liphezulu lavela kwi-16727 yuan / ton.

Nangona ixabiso le-vinyl acetate liye lahla iminyaka elandelelanayo, inzuzo yokuvelisa i-vinyl acetate ihlala iphezulu kwaye uqoqosho lwemveliso lulungile. Kutheni i-vinyl acetate inokugcina inqanaba eliphezulu lokuchuma?
Iinkqubo ezahlukeneyo zokuvelisa i-vinyl acetate zikhokelela kwiingeniso ezahlukeneyo kunye nelahleko
Ngokotshintsho lwezinga lenzuzo ye-vinyl acetate eveliswa ngendlela ye-ethylene, izinga lenzuzo ye-vinyl acetate eveliswa ngendlela ye-ethylene isoloko ikwimeko enenzuzo kwiminyaka embalwa edlulileyo, izinga eliphezulu lenzuzo lifikelele kwi-50% okanye ngaphezulu, kwaye umyinge wengeniso malunga ne-15%. Ingabonwa ukuba i-ethylene esekwe kwi-vinyl acetate ibe yimveliso enengeniso ngokwentelekiso kule minyaka mibini idlulileyo, enenkqubela phambili elungileyo yonke kunye nemida yenzuzo ezinzileyo.

Ngokombono we-calcium carbide method vinyl acetate, kule minyaka mibini idlulileyo, ngaphandle kweenzuzo ezibalulekileyo ukusuka ngo-Matshi 2022 ukuya kuJulayi 2022, onke amanye amaxesha abe kwimeko yokulahlekelwa. Ukusukela ngoJuni ka-2023, inqanaba lomda wenzuzo yendlela ye-calcium carbide ye-vinyl acetate yayimalunga ne-20% yelahleko, kwaye i-avareji yenzuzo yomda we-calcium carbide method vinyl acetate kule minyaka mibini idlulileyo yaba yilahleko eyi-0.2%. Ingabonwa ukuba ukuchuma kwendlela ye-calcium carbide ye-vinyl acetate ihlwempuzekileyo, kwaye imeko yonke ibonisa ilahleko.

Ingabonwa ukuba akuyona into eqhelekileyo ukuba i-vinyl acetate ibe kwinqanaba eliphezulu lenzuzo. Kuphela indlela ye-ethylene yokuvelisa i-acetate ye-vinyl okwangoku ikwimeko enenzuzo, ngelixa indlela ye-carbide isoloko ilahleka kwiminyaka embalwa edlulileyo.
Uhlalutyo lokugcina inzuzo ephezulu ye-ethylene esekelwe kwi-vinyl acetate yemveliso
1. Umlinganiselo weendleko zempahla ekrwada uyahluka kwiinkqubo ezahlukeneyo zemveliso. Kwimveliso ye-vinyl acetate esekelwe kwi-ethylene, ukusetyenziswa kweyunithi ye-ethylene yi-0.35 kunye neyunithi yokusetyenziswa kwe-glacial acetic acid yi-0.72. Ngokwezinga lexabiso eliphakathi ngoJuni ka-2023, umlinganiselo we-ethylene kwimveliso ye-vinyl acetate esekelwe kwi-ethylene malunga ne-37%, ngelixa i-glacial acetic acid yi-45%. Ngoko ke, ukuguquguquka kwexabiso le-glacial acetic acid kunempembelelo enkulu ekutshintsheni kweendleko ze-ethylene esekelwe kwi-vinyl acetate production, elandelwa yi-ethylene.
Ngokumalunga neendleko ze-calcium carbide indlela ye-vinyl acetate, i-calcium carbide i-akhawunti malunga ne-47% yeendleko ze-calcium carbide indlela ye-vinyl acetate, kunye ne-glacial acetic acid i-akhawunti malunga ne-35% yeendleko ze-calcium carbide indlela ye-vinyl acetate. Ngoko ke, kwindlela ye-calcium carbide ye-vinyl acetate, utshintsho kwixabiso le-calcium carbide linempembelelo enkulu kwiindleko, ezihluke kakhulu kwiimpembelelo zeendleko zendlela ye-ethylene.
2. Ukuncipha okubonakalayo kwi-ethylene kunye ne-glacial acetic acid kuye kwakhokelela ekunciphiseni okukhulu kweendleko. Ngokutsho kwedatha echaphazelekayo, kunyaka odlulileyo, ixabiso le-CFR Northeast Asia ethylene liye lancipha nge-33%, kwaye ixabiso le-glacial acetic acid liye lehla nge-32%. Nangona kunjalo, iindleko zokuvelisa i-vinyl acetate usebenzisa indlela ye-calcium carbide inqunyelwe ngokukodwa ngexabiso le-calcium carbide. Kunyaka odlulileyo, ixabiso le-calcium carbide liye lehla nge-25%.
Ngoko ke, ngokombono weenkqubo ezimbini ezahlukeneyo zokuvelisa, ixabiso lezinto ezibonakalayo ze-ethylene indlela ye-vinyl acetate liye lancipha kakhulu, kwaye ukunciphisa iindleko kukhulu kunendlela ye-calcium carbide.

3. Nangona ixabiso le-vinyl acetate liye lehla, ukuhla akubalulekanga njengezinye iikhemikhali. Kunyaka odlulileyo, ixabiso le-vinyl acetate liye lancipha nge-59%, ebonakala ngathi iyancipha kakhulu, kodwa ixabiso lezinye iikhemikhali liye lancipha ngakumbi.
I-acetate ye-Vinyl isoloko igcina i-margin ethile yenzuzo, ngokukodwa ngenxa yokunciphisa iindleko ezibangelwa ukuhla kwamaxabiso ezinto eziphathekayo, kunokuba inkxaso yemarike yabathengi kumaxabiso ayo. Le yimeko yangoku yokuhanjiswa kwexabiso kwikhonkco leshishini le-vinyl acetate. Ukususela kwimeko yangoku yemarike yeekhemikhali zaseTshayina kwixesha elifutshane, kunzima ukutshintsha ngokusisiseko imeko ebuthathaka yemarike yeekhemikhali zaseTshayina ngaphandle kwemigaqo-nkqubo yokuvuselela imarike yabathengi. Kulindeleke ukuba ikhonkco lexabiso le-vinyl acetate liqhubeke nokugcina ingqiqo yokuhambisa ezantsi, kwaye kulindeleke ukuba inzuzo yemveliso kwimarike yabathengi bexesha elizayo, ngakumbi kwimveliso ye-polyethylene kunye ne-EV, iya kugcinwa ngokunciphisa inzuzo ye-vinyl. iacetate.