IVinyl acetate (VAc), eyaziwa ngokuba yi-vinyl acetate okanye i-vinyl acetate, lulwelo olungenambala kunye nolubonakalayo kwiqondo lokushisa kunye noxinzelelo. Njengenye yezona zinto zisetyenziswa kakhulu kwimizi-mveliso yezinto eziphilayo, i-VAc inokuvelisa i-polyvinyl acetate resin (PVAc), i-polyvinyl alcohol (PVA), i-polyacrylonitrile (PAN) kunye nezinye izinto eziphuma kuyo ngokusebenzisa i-polymerization yayo okanye i-copolymerization nezinye ii-monomers. Ezi ziphuma zisetyenziswa ngokubanzi kulwakhiwo, kwimpahla elukiweyo, koomatshini, kumayeza kunye nezilungiseleli zomhlaba.

Uhlalutyo lulonke lweVinyl Acetate Industry Chain

Umphezulu we-vinyl acetate industry chain ikakhulu iqulunqwe ngezinto eziluhlaza ezifana ne-acetylene, i-acetic acid, i-ethylene kunye ne-hydrogen, njl. Iindlela eziphambili zokulungiselela zihlulwe zibe ziintlobo ezimbini: enye yindlela ye-petroleum ethylene, eyenziwe kwi-ethylene, i-acetic acid kunye ne-hydrogen, kwaye ichaphazeleka ngokuguquguquka kwexabiso le-oyile ekrwada. Enye kukulungiswa kwe-acetylene ngegesi yendalo okanye i-calcium carbide, kwaye emva koko kunye ne-acetic acid synthesis ye-vinyl acetate, igesi yendalo ixabisa kancinci kune-calcium carbide. I-Downstream ikakhulu ukulungiswa kwe-polyvinyl alcohol, i-latex emhlophe (i-polyvinyl acetate emulsion), i-VAE, i-EVA kunye ne-PAN, njl., apho i-polyvinyl alcohol iyona mfuno iphambili.

1. Umsinga wezinto eziluhlaza zevinyl acetate

I-Acetic acid yimathiriyeli ekrwada ephambili phezulu kwe-VAE, kwaye ukusetyenziswa kwayo kunonxibelelwano oluqinileyo ne-VAE. Idatha ibonisa ukuba ukususela ngo-2010, ukusetyenziswa okubonakalayo kwe-acetic acid iyonke kuyakhula, kuphela ngo-2015 yi-boom yoshishino ukuya ezantsi kunye neenguqu zemfuno ezisezantsi ziye zancipha, i-2020 yafikelela kwi-7.2 yezigidi zeetoni, ukunyuka kwe-3.6% xa kuthelekiswa no-2019. khula.

Ngokubhekiselele kwizicelo ezisezantsi, i-25.6% ye-acetic acid isetyenziselwa ukuvelisa i-PTA (i-terephthalic acid ecocekileyo), i-19.4% ye-acetic acid isetyenziselwa ukuvelisa i-vinyl acetate, kunye ne-18.1% ye-acetic acid isetyenziselwa ukuvelisa i-ethyl acetate. Kwiminyaka yakutshanje, ipateni yeshishini le-acetic acid derivatives izinzile. IVinyl acetate isetyenziswa njengenye yezona ndawo zibaluleke kakhulu kwisicelo esisezantsi se-acetic acid.

2. Isakhiwo esisezantsi se-vinyl acetate

IVinyl acetate ikakhulu isetyenziselwa ukuvelisa utywala polyvinyl kunye EVA, etc. Vinyl acetate (Vac), i-ester elula yeasidi ehluthayo kunye notywala obungaxutywanga, ingaba polymerized ngokwayo okanye kunye nezinye monomers ukuvelisa iipholima ezifana polyvinyl utywala (PVA), ethylene vinyl acetate - ethylene copolymer ecopolymer (EVA), isiphumo selaphu le-polymer (EVA), i-polymer esebenzayo, njl. ii-agent zokulinganisa, iipeyinti, ii-inki, i-leather processing, i-emulsifiers, iifilimu ezinyibilikayo emanzini, kunye ne-conditioner yomhlaba kwikhemikhali, i-textile Inoluhlu olubanzi lwezicelo kwimichiza, i-textile, i-industry light, ukwenza iphepha, ulwakhiwo kunye nemimandla yeemoto. Idatha ibonisa ukuba i-65% ye-vinyl acetate isetyenziselwa ukuvelisa i-polyvinyl alcohol kunye ne-12% ye-vinyl acetate isetyenziselwa ukuvelisa i-polyvinyl acetate.

Uhlalutyo lwemeko yangoku ye-vinyl acetate market

1, Umthamo wemveliso yeVinyl acetate kunye nenqanaba lokuqalisa

Ngaphezulu kwe-60% yesakhono sokuvelisa i-vinyl acetate yehlabathi sigxile kwingingqi yase-Asiya, ngelixa amandla emveliso ye-vinyl acetate yaseTshayina enza malunga ne-40% yomthamo wemveliso yehlabathi kwaye lelona lizwe livelisa i-vinyl acetate. Xa kuthelekiswa nendlela ye-acetylene, indlela ye-ethylene inoqoqosho ngakumbi kunye nokusingqongileyo, kunye nokucoceka okuphezulu kwemveliso. Ekubeni amandla ombane oshishino lweekhemikhali zaseTshayina ikakhulu axhomekeke kumalahle, ukuveliswa kwe-vinyl acetate ikakhulu kusekelwe kwindlela ye-acetylene, kwaye iimveliso ziphantsi. Umthamo wemveliso ye-vinyl acetate yasekhaya yandiswe kakhulu ngexesha le-2013-2016, ngelixa lihlala lingatshintshi ngexesha le-2016-2018. Umzi-mveliso we-vinyl acetate ka-2019 waseTshayina ubonisa imeko yokuxhotyiswa kwesakhiwo, kunye nomthamo ogqithisileyo kwiiyunithi zenkqubo ye-calcium carbide acetylene kunye nokugxilwa kweshishini eliphezulu. Ngo-2020, amandla okuvelisa i-vinyl acetate ye-2.65 yezigidi zeetoni / ngonyaka, flat unyaka nonyaka.

2, Ukusetyenziswa kweVinyl acetate

Ngokuphathelele ukusetyenziswa, i-vinyl acetate yaseChina iyonke ibonisa ukuguquguquka okunyukayo, kwaye imarike ye-vinyl acetate e-China iye yanda ngokuthe ngcembe ngenxa yokukhula kwemfuno ye-EVA ephantsi, njl. imfuno inyuke ngokukhawuleza, ukusetyenziswa kuye kwanyuka unyaka nonyaka, njengoko i-2020 ephantsi ifikelele kwi-1.95 yezigidi zeetoni, ukunyuka kwe-4.8% xa kuthelekiswa no-2019.

3, Ixabiso eliphakathi kwimarike yevinyl acetate

Ukusuka kwimbono yamaxabiso emarike ye-vinyl acetate, echatshazelwa ngumthamo ogqithisileyo, amaxabiso oshishino ahlala ezinzile ngo-2009-2020. Ngowama-2014 ngokucutheka konikezelo lwaphesheya kweelwandle, amaxabiso emveliso yoshishino anyuke kakhulu, amashishini asekhaya ayandisa ngenkuthalo imveliso, nto leyo ekhokelele kubuchule obugqithisileyo. Amaxabiso e-acetate e-Vinyl awela kakhulu kwi-2015 kunye ne-2016, kwaye kwi-2017, echaphazelekayo yimigaqo-nkqubo yokukhusela indalo, amaxabiso emveliso yoshishino aphakama ngokukhawuleza. Ngo-2019, ngenxa yobonelelo olwaneleyo kwimakethi ye-acetic acid kunye nokucotha kwemfuno kushishino lolwakhiwo olusezantsi, amaxabiso emveliso yoshishino ehle kakhulu, kwaye ngo-2020, echatshazelwa ngubhubhane, ixabiso eliphakathi leemveliso lehle ngakumbi, kwaye ukusukela ngoJulayi ka-2021, amaxabiso kwimarike esempuma afikelela ngaphezulu kwe-12,000 Ukunyuka kwexabiso le-oyile kukunyuka kwexabiso eliphambili, nto leyo ebangela ukunyuka kwexabiso le-oyile. unikezelo lwemarike oluphantsi ngokubanzi olubangelwa kukuvalwa kwefektri okanye ukulibaziseka.

Isishwankathelo seeNkampani ze-Ethyl Acetate

I-Ethyl acetate yamashishini aseTshayina icandelo lezityalo ezine zeSinopec zinomthamo we-1.22 yezigidi zeetoni / ngonyaka, ezibalelwa kwi-43% yelizwe, kwaye i-Anhui Wanwei Group ineetoni ezingama-750,000 / ngonyaka, ibalwa kwi-26.5%. Icandelo elityalwe kwamanye amazwe i-Nanjing Celanese i-350,000 yeetoni / ngonyaka, i-akhawunti ye-12%, kunye necandelo labucala le-Inner Mongolia Shuangxin kunye ne-Ningxia Dadi iyonke i-560,000 yeetoni / ngonyaka, i-akhawunti ye-20%. Abavelisi be-vinyl acetate bangoku basekhaya bafumaneka ikakhulu kuMntla-ntshona, eMpuma yeChina nakumazantsi-ntshona, kunye nomthamo waseMntla-ntshona othatha i-51.6%, i-East China ibalwa kwi-20.8%, uMntla we-China uthatha i-6.4% kunye ne-Southwest accounting ye-21.2%.

Uhlalutyo lwe-vinyl acetate outlook

I-1, ukukhula kwemfuno ye-EVA esezantsi

I-EVA esezantsi kwe-vinyl acetate ingasetyenziswa njengefilimu ye-PV cell encapsulation. Ngokutsho kwenethiwekhi yamandla amatsha ehlabathi, i-EVA evela kwi-ethylene kunye ne-vinyl acetate (VA) ii-monomers ezimbini nge-copolymerization reaction, i-fraction mass ye-VA kwi-5% -40%, ngenxa yokusebenza kwayo kakuhle, imveliso isetyenziswa ngokubanzi kwi-foam, ifilimu esebenzayo, ifilimu yokupakisha, imveliso yokuvuthela inaliti, i-ejenti ezixutywayo kunye ne-adhesives, i-photosultaic ifilimu kunye ne-cable cell metal kunye ne-cable. i-adhesives, njl. 2020 yenkxaso ye-photovoltaic kunyaka ophelileyo, abaninzi abavelisi bemodyuli yentloko yasekhaya baye babhengeza ukwanda kwemveliso, kunye nokwahlukana kobungakanani bemodyuli ye-photovoltaic, inqanaba lokungena kwemodyuli ephindwe kabini yeglasi yanda kakhulu, imfuno yeemodyuli ze-photovoltaic ngaphaya kokukhula okulindelweyo, ukukhuthaza ukukhula kwemfuno ye-Eva. Kulindeleke ukuba i-800,000 yeetoni zomthamo we-EVA ziya kufakwa kwimveliso kwi-2021. Ngokoqikelelo, ukukhula kweetoni ze-800,000 ze-EVA umthamo wokuvelisa kuya kuqhuba ukukhula konyaka kweetoni ze-144,000 zemfuno ye-vinyl acetate, eya kuqhuba ukukhula konyaka kweetoni ze-103,700 ze-acetic acid.

I-2, iVinyl acetate overcapacity, iimveliso eziphezulu zisafuna ukuthengiswa ngaphandle

I-China ine-overcapacity ye-vinyl acetate, kwaye iimveliso eziphezulu zisafuna ukuthengiswa ngaphandle. Okwangoku, ukunikezelwa kwe-vinyl acetate e-China kudlula imfuno, kunye nokugqithisa ngokubanzi kunye nemveliso egqithisileyo exhomekeke ekusetyenzisweni kwamanye amazwe. Ukusukela ekwandisweni komthamo we-vinyl acetate wokuvelisa ngo-2014, ukuthunyelwa kwe-vinyl acetate yaseTshayina kuye kwanda kakhulu, kwaye ezinye iimveliso ezivela kumazwe angaphandle zithathelwe indawo ngumthamo wemveliso yasekhaya. Ukongeza, ukuthunyelwa kwe-China kumazwe angaphandle ubukhulu becala ziimveliso ezikumgangatho ophantsi, ngelixa ukuthengiswa ngaphandle ikakhulu kuyimveliso ephezulu. Okwangoku, i-China isadinga ukuthembela ekungenisweni kwemveliso ye-vinyl acetate ephezulu, kwaye imboni ye-vinyl acetate isenayo indawo yophuhliso kwimarike yemveliso ephezulu.