Isimo sasekhaya kanye nentuthuko yemboni ye-PVC yaseChina

I-PVC ingenye yezinto ezinhlanu ze-universal resin, enezici ezinhle kakhulu ezifana nokumelana ne-asidi ne-alkali, ukumelana nokugqokwa, ukubambezeleka komlilo, kanye nokwahlukanisa. Njengamanje, isibe ngumkhiqizo wepulasitiki wesibili ngobukhulu emhlabeni ngemuva kwe-polyethylene.
I-1.Umthamo wokukhiqiza wasekhaya kanye nokuphuma kwe-PVC
Inqubo yokukhiqiza ye-PVC ngokuyinhloko ihlanganisa izindlela ezimbili: indlela ye-calcium carbide nendlela ye-ethylene, umehluko omkhulu yindlela yokulungiselela i-vinyl chloride monomer.
Ngokombono wokukhiqiza eminyakeni yamuva, ukukhiqizwa kwe-PVC kubonise ukuthambekela okwandayo unyaka nonyaka, futhi amandla okukhiqiza embonini yonke angena esigabeni sokuthuthukiswa okunengqondo. Isidingo semakethe siye sasimama kancane kancane, futhi ukukhiqizwa kuye kwanda kancane kancane. Ngokusho kwedatha evela ku-China Chloroalkali Network, izinga lokusebenza lilonke lemboni yase-China ye-PVC lisahleli lingaphezulu kwama-50% eminyakeni yakamuva.
2. Indlela Yokuthuthukiswa Kwemboni ye-PVC
(1) Ukuqinisa ukwakhiwa kwemishini yokuhlanganisa izimboni
Kusukela ngo-2007, izwe lenze uchungechunge lwemithethonqubo ehlinzeka ngemithethonqubo enemininingwane yokuthuthukiswa kwemboni ye-PVC. Ngesikhathi esifanayo, ikhuthaza ukwakhiwa kwemishini yokusekela ye-calcium carbide kanye ne-chlor alkali yokukhiqiza amabhizinisi, futhi iqinisa ukwakhiwa kwemishini yokuhlanganisa izimboni. Ngaphansi kokuqondisa kwezinqubomgomo zikazwelonke zamanje, ukusungulwa kwemishini yokuhlanganiswa kwezimboni sekuphenduke inkambiso engagwemeki ezifundeni ezimaphakathi nesentshonalanga yeShayina, ezicebile ngamalahle, izimayini zikasawoti kanye nezinsiza ze-limestone. Ngaphansi kwendima yamadivayisi ahlanganisiwe, ngokwethembela kuzinzuzo ezicebile zensiza kanye nezinzuzo ezifanayo, izindleko zokukhiqiza zingalawulwa ngempumelelo futhi imikhiqizo ehlukahlukene ingaphinda isetshenziswe kabusha, Kuthuthukiswe ukuncintisana kwemakethe nekhono lokusinda lebhizinisi.
(2) Izinqubo zokukhiqiza ezihlukene
Ekuthuthukisweni kwamanje kwamabhizinisi afuywayo e-PVC, ukugcizelelwa kokuhlukahluka kwezinqubo zemishini yokukhiqiza kuhlale kukhuphuka, okwenza izidingo zabo zezinga lezobuchwepheshe zikhuphuke kakhulu. Ukuthambekela kokuhlukahluka kwenqubo akunakuvinjwa. Ngokuthuthuka okuqhubekayo kwezinqubo zokukhiqiza zasekhaya ze-PVC, amabhizinisi adinga ukusebenzisa kancane kancane izinqubo ezintsha zokukhiqiza kuyilapho egcina inqubo yokuqala ye-calcium carbide. Ngesikhathi esifanayo, ubuchwepheshe be-PVC polymerization nabo buzothuthukiswa kakhulu, ikakhulukazi mayelana namandla okukhiqiza ama-polymerization reactors. Ngaphezu kwalokho, kuyadingeka futhi ukwethula ngenkuthalo ubuchwepheshe obuphambili bokukhiqiza angaphandle futhi kancane kancane bukhuthaze ukuthuthukisa ukusebenza kahle kwezomnotho embonini.