Ethylene glycol (EG), mwala wapangodya pakupanga poliyesitala, ma antifreeze formulations, ndi utomoni wa mafakitale, akuchitira umboni zakusintha koyendetsedwa ndi kukhazikika komanso kupita patsogolo kwaukadaulo. Zatsopano zaposachedwa munjira zopangira, zosintha zamalamulo, ndi kugwiritsa ntchito kwaposachedwa zikukonzanso gawo lake pantchito yamankhwala padziko lonse lapansi.
1. Green kaphatikizidwe Zotsogola
Kupambana muukadaulo wosintha zinthu kukusintha kapangidwe ka ethylene glycol. Ofufuza ku Asia apanga chothandizira chopangidwa ndi mkuwa chomwe chimasintha ma syngas (kusakaniza kwa hydrogen ndi carbon monoxide) molunjika kukhala ethylene glycol ndi 95% selectivity, kudutsa miyambo ya ethylene oxide intermediates. Njirayi imachepetsa kugwiritsa ntchito mphamvu ndi 30% ndikuchepetsa mpweya wa CO₂ ndi matani 1.2 pa tani ya EG yopangidwa.
Njirayi, yomwe tsopano ikuyesa kuyesa, ikugwirizana ndi zolinga zapadziko lonse lapansi za decarbonization ndipo zitha kusokoneza njira wamba zomwe zimadalira zotsalira zakufa. Ngati sikelo, zitha kuloleza mbewu za ethylene glycol kuti zigwirizane mosasunthika ndi makina ogwidwa ndi kaboni, ndikuyika EG ngati "mankhwala obiriwira" omwe atha kukhala mumayendedwe ozungulira.
2. Bio-Based Ethylene Glycol Amapeza Kuthamanga
Pakuchulukirachulukira kwazinthu zokhazikika, bio-based ethylene glycol yochokera kunzimbe kapena chimanga wowuma ikuwoneka ngati njira ina yotheka. Ntchito yaposachedwa ku South America yawonetsa kuthekera kovundikira zinyalala zaulimi kukhala monoethylene glycol (MEG) yokhala ndi mpweya wochepera 40% kuposa mafuta ofanana ndi mafuta.
Makampani opanga nsalu, ogula kwambiri a EG, akuyesa bio-MEG popanga ulusi wa polyester, zotulukapo zoyambirira zikuwonetsa mphamvu zofananirako komanso kuyanjana kwa utoto. Zolimbikitsa zowongolera, monga EU's Renewable Carbon Initiative, zikuchulukirachulukira kutengera ana awo, ngakhale zovuta zokhudzana ndi kuchulukira kwamitengo yamafuta ndi kugawa kwamitengo zikupitilira.
3. Kuwunika Kwadongosolo pa EG Recycling
Kudetsa nkhawa kwakukulu pa kulimbikira kwa chilengedwe kwa ethylene glycol kwapangitsa kuti pakhale malamulo okhwima. Mu Okutobala 2023, US EPA idapereka malangizo osinthidwa amadzi otayira okhala ndi EG, kulamula njira zapamwamba za oxidation kuti ziwononge ma glycol otsalira pansi pa 50 ppm. Panthawi imodzimodziyo, European Union ikukonzekera kukonzanso ndondomeko yake ya Registration, Evaluation, Authorization, and Restriction of Chemicals (REACH), yomwe ikufuna kuti opanga apereke deta ya poizoni ya EG byproducts pofika 2025.
Njirazi zimayang'ana kuthana ndi zoopsa zazachilengedwe, makamaka m'zachilengedwe zam'madzi, pomwe kudzikundikira kwa EG kwalumikizidwa ndi kuchepa kwa okosijeni m'madzi.
4. Mapulogalamu Atsopano mu Kusungirako Mphamvu
Ethylene glycol ikupeza zofunikira zosayembekezereka m'mibadwo yotsatira yosungira mphamvu. Bungwe lofufuza kafukufuku ku Ulaya lapanga choziziritsa moto cha batri chosayaka moto pogwiritsa ntchito makina osinthidwa a EG-madzi, kupititsa patsogolo kayendetsedwe ka kutentha mu mabatire a lithiamu-ion ndi 25%. Mapangidwe, omwe amagwira ntchito bwino pa -40 ° C mpaka 150 ° C, akuyesedwa muzojambula zamagalimoto amagetsi ndi mayunitsi osungiramo grid.
Kuphatikiza apo, zida zosinthira ma EG-based phase-change (PCMs) zikuyang'ana kwambiri pakusungirako mphamvu zotentha zadzuwa, mayeso aposachedwa akwaniritsa 92% yosunga mphamvu mopitilira mizungu 500.
5. Kukhazikika kwa Chain Chain ndi Kusintha Kwachigawo
Kusamvana kwapadziko lonse lapansi ndi zovuta zogwirira ntchito zalimbikitsa chigawo cha kupanga ethylene glycol. Malo atsopano ku Middle East ndi kum'mwera chakum'mawa kwa Asia akugwiritsa ntchito magawo ang'onoang'ono opanga zinthu zomwe zimathandizira kupezeka kwa chakudya cham'deralo, kuchepetsa kudalira mbewu zazikulu zapakati. Kusinthaku kumathandizidwa ndi makina oyendetsa zinthu zoyendetsedwa ndi AI omwe amachepetsa zinyalala za EG m'magawo akumunsi monga kupanga mabotolo a PET.
Kutsiliza: Chisinthiko Chosiyanasiyana
Gawo la ethylene glycol likuyimira pamphambano, ndikugwirizanitsa ntchito zake zamafakitale zomwe zidakhazikika ndi zofunika kuti zikhazikike mwachangu. Zatsopano mu kaphatikizidwe kobiriwira, njira zina zozikidwa pazachilengedwe, komanso kugwiritsa ntchito ndalama zozungulira zikuwunikiranso mayendedwe ake, pomwe malamulo okhwima amatsindika kufunikira kosamalira chilengedwe. Pamene makampani opanga mankhwala akulowera ku decarbonization, kusinthika kwa ethylene glycol kudzawonetsa kufunika kwake pamsika womwe ukupita patsogolo.
Nthawi yotumiza: Apr-07-2025