Umthombo: Iindaba zoShishino lweMichiza yaseTshayina
Ngomhla wama-23 kuNovemba, iwebhusayithi esemthethweni yeSebe lezeNdalo kunye nokusiNgqongileyo ikhuphe “uLuhlu oluCetyisiweyo lweeNdawo zeHydrochlorofluorocarbon eTshayina (uYilo lokuphawula)” (emva koku kubhekiselwa kulo njengolu “Luhlu”), incoma i-monochlorodifluoromethane (HCFC -22), 1 ,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b) 24 yezona zintathu ziphambili ziveliswe kwaye zisetyenzisiwe iiHCFCs ezi-1 ezizezinye, kubandakanywa ezinye iindlela ezi-6 zogwebu, kuquka ikharbon diokside. , pentane, amanzi, hexafluorobutene, trifluoropropene, tetrafluoropropene, njl.
Umntu ochaphazelekayo ophethe i-Ofisi yoBuphathiswa be-Ecology kunye nokusiNgqongileyo uthe ngoku kukho iindidi ezimbini eziphambili ze-HCFCs ezizezinye: enye yi-hydrofluorocarbons (HFCs) enamandla okufudumala kwehlabathi (GWP), esetyenziswe ngokubanzi kumazwe aphuhlileyo iminyaka emininzi. , kwaye bafezekise imveliso enkulu eTshayina.uphuhliso lwemizi-mveliso.Eyesibini iphantsi kwexabiso le-GWP, kubandakanywa ulwelo olusebenzayo lwendalo, i-olefin ene-fluorine (HFO) kunye nezinye izinto.Ukuze kukhuthazwe inkqubo yokuphuma kwe-HCFCs, ukudibanisa iziphumo zokuphuma kunye nokutshintshwa kwee-HCFCs, kunye nokukhokela amashishini afanelekileyo kunye namashishini ukuba avelise izinto ezintsha, aphuhlise kwaye asebenzise ezinye iindlela eziluhlaza kunye nekhabhoni ephantsi, uMphathiswa we-Ecology kunye nokusiNgqongileyo. , ngesiseko sokushwankathela iziphumo ze-phase-out ye-HCFCs kwiminyaka elishumi edlulileyo, Ukusetyenziswa kwee-hydrocarbons (HCFCs) kumashishini ahlukeneyo, ngokuqwalasela izinto ezifana nokuvuthwa, ukufumaneka, kunye nemiphumo yokutshintshwa kwezinye izinto, uphando kunye noyilo. “ULuhlu oluCetyisiweyo lwe-HCFC-EluQulule izinto eTshayina” (emva koku kubhekiselwa kulo “Luluhlu”) )."Uluhlu" lucebisa iindlela ezizezinye kunye nobunye ubugcisa obuqatshelwe lishishini kwaye buxhaswe yimizekelo eyimpumelelo yokusetyenziswa kwasekhaya okanye iiprojekthi zokubonisa, ngelixa ikhuthaza ukusungulwa kunye nokukhuthazwa kwezinye iindlela ze-GWP eziphantsi.
UMeng Qingjun, usekela-nobhala-jikelele we-China Plastics Processing Industry Association, uthe kudliwanondlebe nentatheli evela e-China Chemical Industry News ukuba olu “Luhlu” lucebisa ukuba kusetyenziswe ikharbon diokside endaweni yee-HCFC njenge-arhente ephuma ugwebu ye-polystyrene foam ne-polyurethane. I-foam yokutshiza, ehambelana nokusingqongileyo kunye neyoqoqosho, kwaye iya kubonisa ithemba elingcono lesicelo.Kwinyathelo elilandelayo, umbutho uya kusebenzisana ngokukhutheleyo noMphathiswa we-Ecology kunye nokusiNgqongileyo ukomeleza ukukhuthazwa kwezinye ii-agent ezifanelekileyo zogwebu ukuqinisekisa ukusebenza okuqhubekayo kwe-polyurethane kunye ne-polystyrene foam industry.
U-Xiang Minghua, umphathi jikelele we-Shaoxing Huachuang Polyurethane Co., Ltd., uthe ukutshintshwa kwe-HCFCs nge-carbon dioxide njenge-arhente ekhupha amagwebu e-polyurethane spray foam ifakwe kuluhlu "kuLuhlu", oluya kuzisa amathuba amatsha ophuhliso kwinkampani.Inkampani iya kwandisa ukukhuthazwa kweteknoloji yokutshiza i-carbon dioxide foam kunye nezixhobo zokubonelela imboni ngezisombululo ezikhuselekileyo, ezihambelana nokusingqongileyo, ezingabizi kakhulu.
U-Sun Yu, usihlalo we-Jiangsu Meside Chemical Co., Ltd., wathi "i-14th yeminyaka emihlanu yoPhuhliso lweSikhokelo soShishino lwePolyurethane yaseChina" iphakamisa ukuba ishishini le-polyurethane kufuneka landise uphuhliso kunye nokusetyenziswa kobugcisa obuhlanganisiweyo bokusebenza, obuluhlaza, obukhuselekileyo kunye nokhuseleko. izongezo ezihambelana nokusingqongileyo.Khuthaza ngokusebenzayo ukutshintshwa kwe-oDS ye-arhente egwebu.Njengeyunithi ekhokelayo ejongene nophuhliso kunye nokusetyenziswa kweteknoloji ye-polyurethane eyi-axiliary compound e-China, i-Meside inceda ekuqondeni ukutshintshwa kwe-GWP ephantsi kwe-foaming agents ngokusebenzisa i-innovation kunye nokuphuculwa kwe-polyurethane surfactants (i-foam stabilizers) kunye ne-catalysts, kunye nokukhuthaza okuphantsi. -ikhabhoni kunye nokukhuselwa kokusingqongileyo kwishishini.
Okwangoku, ilizwe lam liqhuba i-phase-out ye-hydrochlorofluorocarbons (HCFCs) ngokuhambelana neemfuno zeprotocol.Ngokwesisombululo seProtocol ye-19 yeNgqungquthela yamaQela, ilizwe lam lifuna ukumisa imveliso kunye nokusetyenziswa kweHCFCs kwinqanaba lokuqala kwi-2013, kunye nokunciphisa inqanaba lesiseko nge-10%, 35% kunye ne-67.5% ngo-2015, 2020, 2025 kunye 2030 ngokulandelanayo.I-% kunye ne-97.5%, kunye ne-2.5% yenqanaba lesiseko ekugqibeleni yagcinelwa ukugcinwa.Nangona kunjalo, ilizwe lam alikakhuphi uluhlu olucetyiswayo lwababambeleyo beeHCFCs.Njengoko ukupheliswa kwee-HCFC kungene kwinqanaba elibalulekileyo, amashishini ahlukeneyo kunye neendawo zokuhlala zifuna isikhokelo ngokungxamisekileyo kwizinto ezibambeleyo ukuqinisekisa ukusebenza okuqhubekayo koshishino nelizwe.
Ixesha lokuposa: Jul-25-2022