Vinyl acetate (Vac), oo sidoo kale loo yaqaano vinyl acetate ama vinyl acetate, waa dareere aan midab lahayn oo hufan heerkulka qolka iyo cadaadiska.Sida mid ka mid ah alaabta ceeriin ee dabiiciga ah ee warshadaha aadka loo isticmaalo, VAc waxay soo saari kartaa polyvinyl acetate resin (PVAc), alkolada polyvinyl (PVA), polyacrylonitrile (PAN) iyo derivatives kale iyada oo loo marayo polymerization u gaar ah ama copolymerization oo leh monomers kale.Alaabooyinkan ayaa si weyn loogu isticmaalaa dhismaha, dunta, mishiinada, dawooyinka iyo qaboojiyaha ciidda.

Falanqaynta Guud ee Silsiladda Warshadaha Vinyl Acetate

Qaybta sare ee silsiladda warshadaha vinyl acetate waxay inta badan ka kooban tahay alaabta ceyriinka ah sida acetylene, acetic acid, ethylene iyo hydrogen, iwm. Hababka diyaarinta ugu muhiimsan ayaa loo qaybiyaa laba nooc: mid waa habka ethylene petroleum, kaas oo laga sameeyay ethylene. acetic acid iyo hydrogen, waxaana saameeya isbedbedelka qiimaha saliida ceeriin.Mid ka mid ah diyaarinta acetylene by gaaska dabiiciga ah ama kalsiyum carbide, ka dibna iyo acetic acid synthesis of vinyl acetate, gaaska dabiiciga ah wax yar ka sarreeya qiimaha calcium carbide.Hoosudhaca inta badan waa diyaarinta khamriga polyvinyl, cinjirka cad (polyvinyl acetate emulsion), VAE, EVA iyo PAN, iwm, kuwaas oo alkolada polyvinyl ay tahay baahida ugu weyn.

1. Qalabka cayriin ee korka ah ee vinyl acetate

Aashitada Acetic waa alaabta ceeriin ee furaha ah ee kor u kacda VAE, isticmaalkeeduna waxa uu xidhiidh adag la leeyahay VAE.Xogtu waxay muujinaysaa in tan iyo 2010, isticmaalka muuqata ee Shiinaha ee acetic acid guud ahaan waa isbeddelka sii kordhaya, kaliya 2015 by warshadaha kor u kaca iyo hoos u dhac ku yimid isbeddelka dalabaadka ayaa hoos u dhacay, 2020 gaadhay 7.2 milyan oo tan, korodhka 3.6% marka la barbar dhigo 2019. Iyadoo vinyl acetate-ka hoose iyo alaabada kale ee qaab dhismeedka awoodda isbeddelka, heerka isticmaalka ayaa kordhay, warshadaha acetic acid guud ahaan way sii wadi doonaan inay koraan.

Marka la eego codsiyada hoose, 25.6% acetic acid waxaa loo isticmaalaa in lagu soo saaro PTA (acid terephthalic acid la safeeyey), 19.4% acetic acid waxaa loo isticmaalaa in lagu soo saaro vinyl acetate, iyo 18.1% acetic acid ayaa loo isticmaalaa si loo soo saaro ethyl acetate.Sanadihii la soo dhaafay, qaabka warshadaha ee ka soo jeeda acetic acid ayaa ahaa mid deggan.Vinyl acetate waxaa loo isticmaalaa mid ka mid ah qaybaha codsiga hoose ee ugu muhiimsan ee acetic acid.

2. Qaab dhismeedka hoose ee vinyl acetate

Vinyl acetate waxaa inta badan loo isticmaalaa in lagu soo saaro alkolada polyvinyl iyo EVA, iwm. Vinyl acetate (Vac), ester fudud oo ah aashitada saturated iyo aalkolada aan saturated ahayn, waxaa lagu polymerized karaa laftiisa ama monomers kale si ay u soo saaraan polymers sida polyvinyl alkohol (PVA). Ethylene vinyl acetate – ethylene copolymer (EVA) iwm Waxay leedahay codsiyo badan oo kala duwan oo ah kiimikaad, dunta, warshadaha iftiinka, samaynta waraaqaha, dhismaha iyo beeraha baabuurta.Xogtu waxay muujinaysaa in 65% of vinyl acetate loo isticmaalo soo saarida khamriga polyvinyl iyo 12% of vinyl acetate waxaa loo isticmaalaa in lagu soo saaro polyvinyl acetate.

Falanqaynta xaaladda hadda jirta ee suuqa vinyl acetate

1. Vinyl acetate awoodda wax soo saarka iyo heerka bilowga

In ka badan 60% awoodda wax-soo-saarka vinyl acetate-ka adduunka waxa ay ku urursan tahay gobolka Aasiya, halka awoodda wax-soo-saarka vinyl acetate ee Shiinaha ay ka dhigan tahay 40% awoodda wax-soo-saarka guud ee adduunka waana waddanka ugu weyn ee soo saara vinyl acetate.Marka la barbardhigo habka acetylene, habka ethylene waa mid ka dhaqaale badan iyo deegaanka saaxiibtinimo, oo leh nadiifinta alaabta sare.Maadaama awoodda tamarta ee warshadaha kiimikada ee Shiinaha ay inta badan ku tiirsan tahay dhuxusha, wax soo saarka vinyl acetate waxay inta badan ku saleysan tahay habka acetylene, alaabaduna waa kuwo hooseeya.Awoodda wax-soo-saarka vinyl acetate ee gudaha ayaa si weyn u ballaaratay intii lagu jiray 2013-2016, iyada oo aan isbeddelin inta lagu jiro 2016-2018.Warshadaha vinyl acetate ee Shiinaha ee 2019 waxay soo bandhigayaan xaalad awood xad dhaaf ah oo qaabdhismeed ah, oo leh awood xad dhaaf ah unugyada geeddi-socodka kalsiyum carbide acetylene iyo xoojinta warshadaha sare.2020, awoodda wax soo saarka Shiinaha ee vinyl acetate oo ah 2.65 milyan tan/sanadkii, sanad-sannad siman.

2, isticmaalka Vinyl acetate

Ilaa hadda sida isticmaalka ka welwelsan yahay, Shiinaha vinyl acetate guud ahaan waxay muujinaysaa isbeddel kor u kacaya, iyo suuqa for vinyl acetate ee Shiinaha ayaa si joogto ah u ballaariyey sababtoo ah kobaca baahida loo qabo EVA hoose, iwm. Xogta ayaa muujinaysa, marka laga reebo 2018 , Isticmaalka vinyl acetate ee Shiinaha oo ay ka mid yihiin kor u kaca qiimaha acetic acid, isticmaalka ayaa hoos u dhacay, tan iyo 2013 baahida suuqa Shiinaha ee vinyl acetate ayaa kor u kacday si degdeg ah, isticmaalka ayaa kor u kacay sanadba sanadka ka dambeeya, sida 2020 hooseeyo ayaa gaadhay 1.95 million tons, korodhka ee 2019 wuxuu ahaa 4.8%.

3. Celceliska qiimaha suuqa vinyl acetate

Marka la eego qiimaha suuqa vinyl acetate, oo ay saamaysay awoodda xad-dhaafka ah, qiimaha warshaduhu waxay ahaayeen kuwo deggan 2009-2020.2014-kii oo hoos u dhacay saadka dibadda, qiimaha wax soo saarka warshadaha ayaa si aad ah u kordhay, shirkadaha gudaha ayaa si firfircoon u ballaariya wax soo saarka, taasoo keentay awood xad dhaaf ah.Qiimaha Vinyl acetate ayaa si weyn hoos ugu dhacay 2015 iyo 2016, iyo 2017, oo ay saameeyeen siyaasadaha ilaalinta deegaanka, qiimaha wax soo saarka warshadaha ayaa kor u kacay.2019, sababtuna tahay sahayda ku filan suuqa sare ee acetic acid iyo hoos u dhaca baahida warshadaha dhismaha ee hoose, qiimaha wax soo saarka warshadaha ayaa si aad ah hoos ugu dhacay, iyo 2020, oo uu saameeyay cudurka faafa, celceliska qiimaha alaabada ayaa hoos u dhacay, iyo laga bilaabo Luulyo 2021, Qiimaha suuqa bari waxa uu gaadhay in ka badan 12,000 Qiimaha kor u kaca ayaa ah mid aad u wayn, taas oo ay ugu wacan tahay saamaynta wararka togan ee qiimaha saliida cayriin iyo guud ahaan saadka suuqa oo hooseeya oo ay sababeen qaar ka mid ah warshaduhu xidhmeen ama dib u dhac ku yimi.

Dulmar guud ee Shirkadaha Ethyl Acetate

Shirkadda Ethyl acetate ee Shiinaha qaybteeda afarta warshadood ee Sinopec waxay leedahay awood dhan 1.22 milyan oo tan/sanadkii, taas oo ka dhigan 43% dalka, iyo kooxda Anhui Wanwei waxay haysataa 750,000 tan/sanadkii, iyada oo u dhiganta 26.5%.Qaybta ajnabiga ah ee Nanjing Celanese 350,000 tan/sanadkii, oo u dhiganta 12%, iyo qaybta gaarka ah Inner Mongolia Shuangxin iyo Ningxia Dadi wadartoodu waa 560,000 tan/sanadkii, oo u dhiganta 20%.Soosaarayaasha vinyl acetate ee gudaha ee hadda jira waxay inta badan ku yaalliin Waqooyi-galbeed, Shiinaha Bari iyo Koonfur-galbeed, iyadoo awoodda Waqooyi-galbeed ay ku xisaabtamayso 51.6%, Shiinaha Bari waxay xisaabinaysaa 20.8%, Waqooyiga Shiinaha oo xisaabiya 6.4% iyo Koonfur-galbeed oo xisaabiya 21.2%.

Falanqaynta aragtida vinyl acetate

1. Kobaca baahida hoose ee EVA

Hoos-u-socodka EVA ee vinyl acetate waxaa loo isticmaali karaa filimka xuubka unugyada PV.Sida laga soo xigtay shabakadda tamarta cusub ee caalamiga ah, EVA oo ka socda ethylene iyo vinyl acetate (VA) laba monomers by falcelinta copolymerization, jajabka tirada badan ee VA ee 5% -40%, sababtoo ah waxqabadkeeda wanaagsan, badeecada ayaa si ballaaran loo isticmaalaa xumbo, shaqeyneysa. filimka daadanaya, filimka baakadaha, badeecooyinka afuufaya duritaannada, wakiilada isku dhafka ah iyo xabagta, fiilada iyo fiilada, filimka sawir-qaadista unugyada sawir-qaadista iyo xabagta dhalaalaysa kulul, iwm. , iyo kala-duwanaanta cabbirka moduleka sawir-qaadista, laba-geesoodka laba-geesoodka ah ee laba-geesoodka ah ee heerka gelitaanka moduleka ayaa si aad ah u kordhay, baahida loo qabo qaybaha sawir-qaadista ee ka baxsan kobaca la filayo, kicinta kobaca baahida EVA.Waxaa la filayaa in 800,000 oo tan oo awoodda EVA ah lagu dhejin doono wax soo saarka 2021. Marka loo eego qiyaasta, kobaca 800,000 tan ee awoodda wax soo saarka EVA ayaa kor u qaadi doonta kobaca sanadlaha ah ee 144,000 tan ee baahida vinyl acetate, kaas oo kicin doona kobaca sanadlaha ah. 103,700 oo tan oo ah baahida acetic acid.

2, Vinyl acetate overcapacity, alaabta-dhamaadka sare weli u baahan tahay in la soo dhoofiyo

Shiinuhu waxa uu leeyahay awood guud oo xad dhaaf ah oo ah vinyl acetate, iyo badeecadaha dhamaadka-sare ayaa wali u baahan in la soo dhoofiyo.Waqtigan xaadirka ah, sahayda vinyl acetate ee Shiinaha ayaa ka badan baahida, iyada oo guud ahaan awoodda iyo wax soo saarka xad-dhaafka ah ay ku tiirsan yihiin isticmaalka dhoofinta.Tan iyo markii la ballaariyay awoodda wax-soo-saarka vinyl acetate ee 2014, dhoofinta vinyl acetate ee Shiinaha ayaa si aad ah u kordhay, iyo qaar ka mid ah alaabooyinka la soo dhoofiyo ayaa lagu beddelay awoodda wax soo saarka gudaha.Intaa waxa dheer, wax-soo-saarka Shiinaha ayaa u badan wax-soo-saar hooseeya, halka wax-soo-dejintuna ay u badan yihiin badeecado heer-sare ah.Waqtigan xaadirka ah, Shiinuhu wali wuxuu u baahan yahay inuu ku tiirsanaado soo dejinta alaabada vinyl acetate-dhamaadka sare, iyo warshadaha vinyl acetate ayaa wali boos u leh horumarinta suuqa wax soo saarka sare.