Xilliga ka baxsan, si taxadar leh u eeg dhererka dib u soo celinta PVC(3)

Dhoofinta rubuci afraad ayaa la filayaa inay daciifto sanadba sanadka ka dambeeya

Xoogga dhoofinta sanadkan ayaa ka tarjumaysa daciifnimada baahida gudaha.Daaqadda dhexdhexaadinta dhoofinta PVC ayaa sii waday furitaanka rubuci hore, mugga dhoofinta ayaa ahaa kan labaad oo keliya isla muddadaas sannadkii hore, oo aad uga sarreeya sannadihii hore.Sababtoo ah qiimaha sarreeya ee saliidda ceyriinka dibadda, amarada dhoofinta ayaa sii waday inay soo fiicnaato March ilaa May, baahida dibadda ee xilliga ka baxsan ayaa hoos u dhacday Juun ilaa Luulyo, ka dibna hoos u dhaca kharashka dibadda, amarrada dhoofinta ayaa hoos u dhacay iyo mugga dhoofinta in la keeno ayaa hoos u dhacay. si weyn.Mugga dhoofinta ee PVC bishii Oktoobar wuxuu ahaa 96,600 tan, iyo mugga dhoofinta PVC ee Janaayo ilaa Oktoobar wuxuu ahaa 1,755,600 tan, oo kordhay 21.3% sannad kasta.Saddexdii bilood ee la soo dhaafay, baahida loo qabo budada PVC ee Hindiya iyo Koonfur-bari Aasiya ayaa si weyn hoos ugu dhacday marka la barbar dhigo rubuca koowaad iyo labaad, iyo hoos u dhaca qiimaha alaabta ceeriin ee dibedda, qiimaha saxanka dibedda ee PVC ayaa sii waday inuu daciifo, iyo amarrada dhoofinta gudaha bilihii Oktoobar iyo Noofambar ma fiicna, taasoo keentay in mugga dhoofinta ee rubuci afraad oo dhan uu hoos u dhici doono.Dhinaca kale, Hindiya waxay rajaynaysaa inay kaydiso ka hor dhamaadka siyaasadda ka hortagga qashinka.Dhanka kale, waxaa jira rajada gudaha ee kor u kaca qiimaha, sidaas darteed waxay kordhisaa iibka.Si kastaba ha ahaatee, waxay u baahan tahay inay aragto joogteynta amarrada dhoofinta, iyo amarrada dhoofinta ee December waxay saameyn doontaa mugga dhoofinta ilaa Janaayo sanadka soo socda.

Iv.Soo koobid

Aasaaska dhabta ah ee daciifka ah ee muddada-gaaban ee PVC iyo filashooyinka macro ayaa wali ku jira ciyaarta, dhinaca sahayda: kalsiyum carbide wuxuu ku bilaabmayaa xasillooni, PVC-ga hoose wax yar ayuu ka bilaabmayaa, xamaasadda soo iibsiga carbide ee kaalshiyamku waa la wanaajiyey, sahayda suuqa kalsiyum carbide iyo baahida aasaasiga ah.Waqtigan xaadirka ah, alaabada soosaarayaasha PVC waxay ku yaalaan dhinaca sare, oo ay weheliso xilli-ciyaareedka dhamaadka sanadka, waxaana weli jira xoogaa cadaadis ah dhamaadka sahayda.Dhamaadka qiimaha: Qiimaha kaarbiid ee kaalshiyamka si loo ilaaliyo xasilloonida, sababtuna tahay qaar ka mid ah faa'iidooyinka ganacsiga ee kaalshiyamka carbide ayaa mar kale ku dhacay khadka qiimaha, inta badan suuqa kaarbide kalsiyum hawlgalka qiimaha xasilloon ee hadda.Macdanta dibadda ee kalsiyum carbide ee dhawaanta ganacsiyada PVC ee booska kor u kacay iyo iibsashada kaalshiyam carbide hoos u dhaca hoos u dhaca khasaaraha.Inkasta oo soodhaha caustic ay faa'iido leedahay laakiin dareeraha qiimaha koloriinta ayaa hoos u dhacay, hoos u dhaca faa'iidada ganacsiga isdhexgalka chlor-alkali.Dhammaadka dalabka: xaaladda dalbashada ganacsiga ee hoos-u-dhaca ma fiicna, oo ay weheliso shahaadada aqbalaadda qiimaha alaabta ceeriin ee PVC ma aha mid sare, xamaasad hoose ee kaydinta, u dhawaanshaha fasaxa, xamaasadda wax iibsiga hoose ee muddada gaaban way adag tahay in la hagaajiyo.Dalabka dhoofinta ee u dambeeyay waxyar ayaa soo hagaagay laakiin waxay u baahan yihiin in la arko sii socoshada.

Guud ahaan, baahida hoose ama si tartiib tartiib ah ilaa xilli-xilliyeedka, aasaasyada PVC waxay sii ahaanayaan kuwo daciif ah.Saamaynta dhow ee dareenka macro ee badeecadaha ayaa aad u muuqda, Diisambar waa muddada hordhaca siyaasadda degdegga ah, muddada gaaban ee PVC ayaa weli la filayaa inay ku sii socoto aasaaska iyo kala duwanaanshaha ciyaarta macro, si taxaddar leh u eegno wareeggan PVC ee ka sarreeya dhererka dib u soo celinta. .