Mohloli: Litaba tsa Indasteri ea Lik'hemik'hale tsa China
Ka la 23 Pulungoana, webosaete ea semmuso ea Lekala la Ecology le Tikoloho e ile ea lokolla "Lethathamo le khothalelitsoeng la li-substitutes tsa Hydrochlorofluorocarbon naheng ea China (Sets'oants'o sa Maikutlo)" (eo hamorao e tla bitsoa "Lethathamo"), e khothaletsang monochlorodifluoromethane (HCFC -22), 1 ,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) 24 ea tse tharo tse kholo tse hlahisoang le ho sebelisoa HCFCs 1 mefuta e meng e 1, ho kenyeletsoa mekhoa e meng e 6 ea ho foaming agent, ho kenyeletsoa carbon dioxide. , pentane, metsi, hexafluorobutene, trifluoropropene, tetrafluoropropene, joalo-joalo.
Motho ea amehang ea ikarabellang Lefapheng la Ecology le Tikoloho o boletse hore hajoale ho na le mefuta e 'meli e meholo ea mefuta e meng ea HCFC: e' ngoe ke hydrofluorocarbons (HFCs) e nang le monyetla o moholo oa ho futhumala ha lefatše (GWP), e 'nileng ea sebelisoa haholo linaheng tse tsoetseng pele ka lilemo tse ngata. , hape ba fihletse tlhahiso e kholo Chaena.kholo ea indasteri.Ea bobeli ke lintho tse nkang sebaka sa boleng bo tlase ba GWP, ho kenyeletsoa maro a tlhaho a sebetsang, li-olefin tse nang le fluorine (HFO) le lintho tse ling.E le ho khothaletsa ts'ebetso ea ho felisa li-HCFC, ho kopanya liphetho tsa ho emisa le ho nkela sebaka sa HCFC, le ho tataisa liindasteri le likhoebo tse amehang ho qapa, ho nts'etsapele le ho sebelisa mefuta e meng ea khabone e tala le e tlase, Lekala la Ikholoji le Tikoloho. , motheong oa ho akaretsa liphetho tsa ho tsoa ha HCFC lilemong tse leshome tse fetileng, Tšebeliso ea li-hydrocarbon (HCFCs) liindastering tse fapa-fapaneng, ho nahanoa ka lintlha tse kang kholo, ho fumaneha, le liphello tsa ho fetola mekhoa e meng, e entsoeng lipatlisiso le ho ngoloa. "Lethathamo le Khothaletsoang la HCFC-E Nang le Maemo a China" (eo ka mor'a moo e tla bitsoa "Lethathamo") )."Lethathamo" le khothaletsa mekhoa e meng le mekhoa e meng ea theknoloji e 'nileng ea hlokomeloa ke indasteri' me e tšehetsoa ke mekhoa e atlehileng ea tšebeliso ea malapeng kapa merero ea lipontšo, ha e ntse e khothalletsa ho nchafatsa le ho phahamisa mekhoa e meng e tlaase ea GWP.
Meng Qingjun, motlatsi oa mongoli-kakaretso oa China Plastics Processing Industry Association, o boletse puisanong le moqolotsi oa litaba oa China Chemical Industry News hore "Lethathamo" le khothalletsa hore ho sebelisoe carbon dioxide ho e-na le HCFCs e le sesebelisoa se phophomang bakeng sa foam e entsoeng ka polystyrene le polyurethane. fafatsa foam, e leng se nang le botsoalle ho tikoloho le moruo, 'me e tla bonts'a tebello e ntle ea ts'ebeliso.Mohatong o latelang, mokhatlo o tla sebelisana ka mafolofolo le Lekala la Ecology le Tikoloho ho matlafatsa kholiso ea li-agent tse ling tse amehang tse hlahisang lekoeba ho netefatsa ts'ebetso e tsoelang pele ea liindasteri tsa polyurethane le polystyrene foam.
Xiang Minghua, mookameli-kakaretso oa Shaoxing Huachuang Polyurethane Co., Ltd., o boletse hore ho nkeloa sebaka ha HCFC ka carbon dioxide e le sesebelisoa se phophomang bakeng sa foam ea spray ea polyurethane e thathamisitsoe ho "Lethathamo", le tla tlisa menyetla e mecha ea nts'etsopele ho khampani.Khampani e tla eketsa papatso ea theknoloji ea ho fafatsa foam ea carbon dioxide le lisebelisoa ho fa indasteri litharollo tse bolokehileng, tse se nang tikoloho, tse bolokang chelete e ngata.
Sun Yu, molula-setulo oa Jiangsu Meside Chemical Co., Ltd., o boletse hore "Tataiso ea Nts'etsopele ea Lilemo tse hlano bakeng sa indasteri ea polyurethane ea China" e fana ka maikutlo a hore indasteri ea polyurethane e lokela ho eketsa nts'etsopele le ts'ebeliso ea theknoloji e kopaneng bakeng sa ts'ebetso, botala, polokeho le polokeho. metsoako e baballang tikoloho.Khothaletsa ka mafolofolo phetiso ea moemeli ea foaming ODS.Joaloka yuniti e etellang pele e ikarabellang bakeng sa nts'etsopele le ts'ebeliso ea theknoloji e thusang ea polyurethane naheng ea China, Meside e thusa ho hlokomela phetisetso ea li-foaming agents tse tlase tsa GWP ka boqapi le ntlafatso ea li-polyurethane surfactants (foam stabilizers) le li-catalysts, le ho khothaletsa tse tlase. -Khabone le tshireletso ya tikoloho ya indasteri.
Hajoale, naha ea heso e ntse e etsa phase-out ea hydrochlorofluorocarbons (HCFCs) ho latela litlhoko tsa protocol.Ho ea ka qeto ea Protocol ea 19 ea Seboka sa Mekha, naha ea heso e hloka ho emisa tlhahiso le tšebeliso ea HCFC boemong ba motheo ka 2013, le ho fokotsa boemo ba motheo ka 10%, 35% le 67.5% ka 2015; 2020, 2025 le 2030 ka ho latellana.% le 97.5%, le 2.5% ea boemo ba motheo qetellong e ile ea bolokeloa tlhokomelo.Leha ho le joalo, naha ea heso ha e e-so fane ka lethathamo le khothaletsoang la li-HCFC.Kaha pheliso ea li-HCFC e kene boemong bo mahlonoko, liindasteri le libaka tse fapaneng li hloka tataiso ka potlako mabapi le tse ling ho netefatsa tšebetso e tsoelang pele ea indasteri le naha.
Nako ea poso: Jul-25-2022