Ethylene glycol (EG), k'hemik'hale ea bohlokoa tlhahisong ea polyester, metsoako ea antifreeze, le li-resin tsa indasteri, e bona nts'etsopele e fetohang e susumetsoang ke litlhoko tsa botsitso le tsoelo-pele ea theknoloji. Mekhoa ea morao-rao ea tlhahiso, lintlafatso tsa taolo, le lits'ebetso tse ncha li fetola karolo ea eona lefapheng la lik'hemik'hale la lefats'e.
1. Likatleho tsa Ts'ebetso e Tala
Katleho e kgolo theknolojing ya phetoho ya di-catalytic e fetola tlhahiso ya ethylene glycol. Bafuputsi ba Asia ba thehile catalyst e ntjha e thehilweng koporong e fetolang syngas (motswako wa haedrojene le carbon monoxide) ka ho toba ho ethylene glycol ka 95% ya kgetho, e fetang di-intermediate tsa setso tsa ethylene oxide. Mokgwa ona o fokotsa tshebediso ya matla ka 30% mme o fokotsa dihlahiswa tsa CO₂ ka ditone tse 1.2 ka tonne ya EG e hlahiswang.
Ts'ebetso ena, eo hona joale e leng tekong ea teko, e tsamaisana le lipheo tsa lefats'e tsa ho tlosa khabone 'me e ka sitisa litsela tse tloaelehileng tsa tlhahiso tse itšetlehileng ka mesaletsa ea lintho tsa khale. Haeba e ka atolosoa, e ka nolofalletsa limela tsa ethylene glycol ho kopana hantle le litsamaiso tsa ho hapa khabone, e beha EG e le "k'hemik'hale e tala" e ka bang teng ka har'a liketane tsa phepelo e chitja.
2. Ethylene Glycol e Thehiloeng Bio-Thehiloeng ho Eketseha ka Khatello
Har'a tlhoko e ntseng e eketseha ea thepa e tsitsitseng, ethylene glycol e thehiloeng linthong tse phelang e nkiloeng ho 'moba kapa starch ea poone e ntse e hlaha e le mokhoa o mong o sebetsang. Morero oa morao tjena oa kopanelo Amerika Boroa o bontšitse monyetla oa ho belisa litšila tsa temo ho ba monoethylene glycol (MEG) ka 40% ea khabone e tlase ho feta lintho tse lekanang le tse thehiloeng ho peterole.
Indasteri ea masela, e leng moreki e moholo oa EG, e ntse e leka tlhahiso ea fiber ea polyester ka bio-MEG, ka liphetho tsa pele tse bontšang matla a ho teneha a tšoanang le ho ratana ha dae. Likhothaletso tsa taolo, joalo ka Leano la Khabone le Tsosolositsoeng la EU, li ntse li potlakisa ho amoheloa, leha liphephetso tse mabapi le ho pharalla ha feedstock le ho lekana ha litšenyehelo li ntse li tsoela pele.
3. Tlhahlobo ea Taolo mabapi le ho Sebelisa Hape ha EG
Matšoenyeho a ntseng a hola mabapi le ho phehella ha ethylene glycol tikolohong a bakile melao e thata. Ka Mphalane 2023, US EPA e hlahisitse litataiso tse ntlafalitsoeng bakeng sa ho ntšoa ha metsi a litšila a nang le EG, e laela lits'ebetso tse tsoetseng pele tsa oxidation ho senya li-glycol tse setseng ka tlase ho 50 ppm. Ka nako e ts'oanang, European Union e ntse e ngola tlhahlobo ea moralo oa eona oa Ngoliso, Tlhahlobo, Tumello le Thibelo ea Lik'hemik'hale (REACH), e hlokang bahlahisi ho fana ka lintlha tsa chefo bakeng sa lihlahisoa tse ling tsa EG ka 2025.
Mehato ena e ikemiseditse ho sebetsana le dikotsi tsa tikoloho, haholoholo dibakeng tsa tikoloho tsa metsing, moo ho bokellana ha EG ho amanang le ho fokotseha ha oksijene metsing.
4. Litšebeliso tse Ncha tsa Polokelo ea Matla
Ethylene glycol e fumana thuso e sa lebelloang lits'ebetsong tsa polokelo ea matla tsa moloko o latelang. Mokhatlo oa lipatlisiso Europe o entse sesebelisoa sa ho pholisa betri se sa cheseng se sebelisa motsoako o fetotsoeng oa metsi a EG, se ntlafatsang tsamaiso ea mocheso libetering tsa lithium-ion ka 25%. Sebopeho sena, se sebetsang hantle ho tloha ho -40°C ho isa ho 150°C, se ntse se lekoa mefuteng ea likoloi tsa motlakase le li-unit tsa polokelo ea grid-scale.
Ho phaella moo, thepa ea phetoho ea mekhahlelo e thehiloeng ho EG (li-PCM) e ntse e hapa tlhokomelo bakeng sa polokelo ea matla a mocheso oa letsatsi, 'me liteko tsa morao tjena li fihletse katleho ea ho boloka matla ea 92% ho feta lipotoloho tse 500.
5. Ho Ikamahanya le Ketane ea Phepelo le Liphetoho tsa Libaka
Dikgohlano tsa dipolotiki tsa naha le mathata a tsamaiso ya thepa di hlohlelleditse tlhahiso ya ethylene glycol sebakeng se le seng. Dibaka tse ntjha Botjhabela bo Hare le Borwa-botjhabela ba Asia di amohela diyuniti tsa tlhahiso tse nyane tse ntlafaditsweng bakeng sa ho fumaneha ha dijo tsa lehae, ho fokotsa ho itshetleha hodima dimela tse kgolo tse bohareng. Phetoho ena e tlatselletswa ke ditsamaiso tsa taolo ya thepa tse tsamaiswang ke AI tse fokotsang ditshila tsa EG makaleng a tlase jwalo ka tlhahiso ya dibotlolo tsa PET.
Qetello: Phetoho e nang le mahlakore a mangata
Lekala la ethylene glycol le eme moo ho kopanang teng, le leka-lekanya tshebediso ya lona e tebileng ya indasteri le ditlhoko tse potlakileng tsa botsitso. Dintlha tse ntjha tsa tlhahiso ya botala, mekhoa e meng e thehilweng hodima bio, le ditshebediso tsa moruo o potolohang di hlalosa botjha ketane ya lona ya boleng, ha melao e thata e totobatsa tlhoko ya mekgwa e ikarabellang tikolohong. Ha indasteri ya dikhemikhale e ntse e fetohela ho decarbonization, ho ikamahanya ha ethylene glycol ho tla etsa qeto ya bohlokwa ba yona mmarakeng o fetohang ka potlako.
Nako ea poso: Mmesa-07-2025