Uhlalutyo lwekhonkco loshishino lwePVC kunye nembonakalo yentengiso

Uhlalutyo lwekhonkco loshishino lwePVC kunye nembonakalo yentengiso
Ipolyvinyl chloride (PVC) yenye yeereyini ezintlanu zenjongo jikelele.Yenziwe ngepolymerization yasimahla yevinyl chloride monomers.Ukusetyenziswa kwePVC kukwinqanaba lesithathu phakathi kwentlanu yeenjongo jikelele.Njengenye yeendidi ezibalulekileyo zekamva kwishishini lemichiza, iPVC ihlalutywa okokuqala kweli phepha.Okwesibini, ikhontrakthi ephambili ye-PVC ifumene ukuhla ngokukhawuleza ukususela ngoJuni, kwaye ingene kwinqanaba lokuhlanganisa uluhlu.Icala lemfuno lisekwimeko yokwenyani ebuthathaka.Ixesha eliphakamileyo likaSeptemba lidlulile, kwaye ukunyuka kwemfuno ngo-Oktobha kufuneka kuqinisekiswe.Ukuba ukunyuka kweemfuno ngo-Oktobha kuzisa ukuchithwa okucacileyo kwe-inventory, kwaye i-rebound elindelekileyo kwixabiso le-calcium carbide kwicala leendleko liya kuzisa inkxaso ephantsi, i-PVC ilindeleke ukuba ixhaswe.Ifakwe kwi-rebound encinci.Nangona kunjalo, icala lokubonelela ngePVC langoku linomthamo omtsha wemveliso kwikota yesine.Ukuba icala lemfuno aliboni ukuphuculwa okuphawulekayo, uluhlu lwempahla lunokuthi luhlale luphezulu, kwaye i-PVC iya kugcina umsebenzi obuthathaka.

01. PVC ishishini chain - isiphelo sezinto ekrwada

Okokuqala, isingeniso esifutshane kwi-polyvinyl chloride, i-polyvinyl chloride (i-Polyvinyl Chloride, i-PVC emfutshane), i-non-toxic, i-powder emhlophe engenavumba kunye nokuzinza kweekhemikhali eziphezulu kunye neplastiki enhle.Ngokwendlela yokufumana i-vinyl chloride monomer, inokwahlulwa ibe yindlela ye-calcium carbide, indlela ye-ethylene kunye nokungeniswa ngaphandle (EDC, VCM) indlela ye-monomer (indlela ye-ethylene kunye nendlela ye-monomer ethunyelwa ngokuqhelekileyo ibizwa ngokuba yindlela ye-ethylene), phakathi apho indlela ye-ethylene ininzi emhlabeni., ilizwe lam ikakhulu lisekelwe kwindlela ye-calcium carbide ye-PVC, umlinganiselo we-PVC oveliswe yindlela ye-calcium carbide akhawunti ngaphezu kwe-70%.Kutheni ilizwe lethu lahlukile kwiindlela zokuvelisa zePVC eziqhelekileyo kumazwe ngamazwe?

Ukusuka kwindlela yenkqubo yokuvelisa, i-calcium carbide (i-CaC2, i-calcium carbide yinto ebalulekileyo esisiseko semichiza ekrwada, isetyenziselwa ukuvelisa igesi ye-acetylene. Iphinda isetyenziswe kwi-organic synthesis, i-oxyacetylene welding, njl.) kwindlela ye-calcium carbide akhawunti malunga malunga I-70% yeendleko zemveliso, Enye yezinto eziphambili ze-calcium carbide, i-orchid, yenziwe ngamalahle.Ilizwe lineempawu zamalahle atyebileyo, i-oyile embi kunye negesi encinci.Ke ngoko, inkqubo yokuveliswa kwePVC yasekhaya isekelwe ikakhulu kwi-calcium carbide.Inokubonwa kwakhona kwindlela yexabiso le-calcium carbide kunye nexabiso lasekhaya lePVC ukuba njengeyona nto iphambili ye-PVC, ukuhambelana kwexabiso phakathi kwezi zibini kuphezulu kakhulu.

Ngamazwe ngamazwe, indlela ye-oyile kunye negesi yendalo (indlela ye-ethylene) isetyenziswa kakhulu, ngoko ixabiso kunye nexabiso lemarike alihambisani.

Nangona ilizwe lam linomgaqo-nkqubo wokulwa nokulahla kwi-PVC, abavelisi basekhaya basengasebenzisa indlela ye-ethylene ukuvelisa i-PVC ngokuthenga ioli ekrwada, i-ethylene kunye ne-VCM monomers.Iinkqubo ezahlukeneyo zokuvelisa iPVC zineendlela ezahlukeneyo zempembelelo kwicala layo leendleko.Ngokuhambelanayo, utshintsho kumaxabiso eoli ekrwada kunye ne-ethylene ekupheleni kwezinto ezibonakalayo zenkqubo ye-ethylene iya kuchaphazela ukuzimisela kwemveliso yabakhiqizi be-PVC basekhaya ngenkqubo ye-calcium carbide.

02. Ikhonkco loshishino lwePVC - ukusetyenziswa kwezantsi

Ngokwemfuno, iimveliso zePVC ezisezantsi zinokwahlulwa zibe ziindidi ezimbini: iimveliso ezinzima kunye neemveliso ezithambileyo.Iimveliso eziqinileyo zibandakanya ukufakwa kombhobho, iingcango ezineprofayili kunye neefestile, amashiti aqinileyo kunye namanye amaphepha.Phakathi kwazo, imibhobho kunye neeprofayili zezona mfuno zibalulekileyo ezisezantsi, zibalelwa ngaphezu kwe-50%.Njengowona ubalulekileyo osezantsi, imfuno yemibhobho ikhula ngokukhawuleza.I-real estate ehamba phambili kunye nokwakhiwa kwee-odolo zeShishini ziphezulu, kwaye ukusetyenziswa kwe-PVC yezinto ezibonakalayo kuye kwanda kakhulu.Iimveliso ezithambileyo ziquka izinto zokugquma umgangatho, iifilimu, izixhobo zentambo, iimathiriyeli zokwenziwa, izihlangu kunye nezixhobo zodwa, njl. Kwiminyaka yakutshanje, imfuno yokuthumela ngaphandle kwe-PVC yomgangatho inyukile, eye yaba yindlela entsha yokukhula kwemfuno ye-PVC.Ngokubhekiselele kwimfuno yesiphelo, i-real estate iyeyona ndawo ibalulekileyo kuqoqosho lwelizwe echaphazela i-PVC, ibalwa phantse i-50%, ilandelwa ziziseko zophuhliso, iimpahla ezomeleleyo, iimpahla zabathengi kunye nezolimo.

03. Imbonakalo yeMarike

Ukususela kumbono wekhonkco loshishino, kwicala lezinto ezibonakalayo, amaxabiso akhoyo ngoku amalahle ashushu kunye nekhabhoni eluhlaza okwesibhakabhaka akwizinga eliphezulu, kwaye ahla ebusika.Ukuba ubusika obubandayo buphinda buphinde, amaxabiso amalahle ashushu kunye nekhabhoni eluhlaza okwesibhakabhaka anokunyuka kwizinga eliphezulu, eliya kuqhuba ixabiso le-calcium carbide phezulu.Okwangoku, ixabiso le-calcium carbide liyaphambuka kwixabiso lamalahle e-thermal kunye ne-blue carbon, ngokukodwa kuba ixabiso le-PVC elisezantsi le-calcium carbide libuthathaka.Okwangoku, abavelisi be-calcium carbide baye bandisa ngokuthe ngcembe ilahleko yabo phantsi koxinzelelo lweendleko.Amandla okuxoxisana abenzi be-calcium carbide alinganiselwe, kodwa kwimeko yokwandiswa kweelahleko zenkampani, kunokwenzeka ukuthunyelwa kwefektri ye-calcium carbide kwixabiso eliphezulu lokunyuka.Oku kukwabonelela ngenkxaso yexabiso eliphantsi kumaxabiso ePVC.

Kwikota yesine, ukubuyisela ukubonelela kulindeleke ukuba kube namandla.Kwikota yesine, kuya kuba ne-1.5 yezigidi ze-PVC amandla okuvelisa amatsha, apho i-1.2 yezigidi ziqinisekile ngakumbi.Iitoni ezingama-400,000 zomthamo omtsha wemveliso ziya kukhutshwa;ukongeza, Jintai uye 300.000 iitoni ixesha imveliso nangoku akuqinisekanga, ngokubanzi, uxinzelelo kwi PVC unikezelo kwikota yesine mkhulu.

Ubunyani obubuthathaka kwicala lemfuno kunye ne-inventory ephezulu ye-anti-seasonal zezona zizathu zexabiso lePVC elibuthathaka.Ndijonge phambili kwimbonakalo yentengiso, ixesha eliphakamileyo lemfuno yegolide yePVC yemveli lidlulile.Nangona imfuno ngoSeptemba iphucukile, isephantsi kunokuba bekulindelwe.Imfuno ijongene novavanyo kweyeDwarha.Ukuba imfuno iyaphucuka kwaye ixabiso elisezantsi lixhaswa, iPVC inokuphinda ibuyele kancinane.Nangona kunjalo, kudibene nokunyuka okukhulu kwemveliso kwikota yesine kunye noxinzelelo olukhulu lokubonelela, kulindeleke ukuba i-PVC igcine umsebenzi obuthathaka.