Ethylene glycol (EG), kemikari inokosha mukugadzirwa kwepolyester, mishonga inodzivirira kutonhora, uye maresini emaindasitiri, iri kuona shanduko huru inokonzerwa nekuchengetedza zvakatipoteredza uye kufambira mberi kwetekinoroji. Zvitsva zvitsva mukugadzira nzira, kugadzirisa mitemo, uye mashandisirwo matsva zviri kuchinja basa rayo muchikamu chemakemikari chepasi rose.
1. Kubudirira kweGreen Synthesis
Kubudirira kuri kuitwa mukugadzira tekinoroji yekuchinja ma "catalytic conversion" kuri kuchinja kugadzirwa kwe "ethylene glycol". Vaongorori muAsia vakagadzira "catalyst" itsva inobva mumhangura inoshandura "syngas" (musanganiswa wehydrogen necarbon monoxide) zvakananga kuita "ethylene glycol" ine 95% selectivity, ichipfuura "ethylene oxide intermediates" yechinyakare. Nzira iyi inoderedza kushandiswa kwesimba ne30% uye inoderedza CO₂ emissions ne1.2 matani patani yeEG inogadzirwa.
Maitiro aya, ayo ari mukuyedzwa kwekutanga, anoenderana nezvinangwa zvepasi rose zvekubvisa kabhoni uye anogona kukanganisa nzira dzekugadzira dzinoenderana nezvisaririra. Kana zvikawedzerwa, zvinogona kugonesa zvirimwa zve ethylene glycol kubatana zvakanaka nemaitiro ekutora kabhoni, zvichiisa EG se "kemikari yakasvibira" mucheni dzezvinhu dzakatenderera.
2. Ethylene Glycol Inowana Simba reKubata
Pakati pekudiwa kuri kuwedzera kwezvinhu zvinogara kwenguva refu, ethylene glycol inobva munzimbe kana starch yechibage iri kubuda seimwe nzira inoshanda. Chirongwa chakaitwa munguva pfupi yapfuura muSouth America chakaratidza kuti zvinokwanisika kuvirisa marara ekurima kuita monoethylene glycol (MEG) ine kabhoni yakaderera ne40% pane zvinhu zvakafanana nepetroleum.
Indasitiri yemachira, iyo inonyanya kushandisa EG, iri kuedza kugadzira bio-MEG mukugadzirwa kwefiber yepolyester, nemhedzisiro yekutanga ichiratidza simba rekudhonza uye hukama hwedhayi. Zvinokurudzira zvemutemo, zvakaita seEU's Renewable Carbon Initiative, zviri kukurumidza kushandiswa, kunyangwe matambudziko aripo pakuwanda kwezvikafu uye kuenzana kwemitengo achiripo.
3. Kuongorora Kwemutemo Pakudzokorodza EG
Kunetseka kuri kuramba kuripo pamusoro pekuramba kuripo kwe ethylene glycol kwakonzera mitemo yakaoma. Muna Gumiguru 2023, US EPA yakaronga gwara rakagadziridzwa rekubuda kwemvura yakasviba ine EG, ichiraira maitiro epamusoro e oxidation kuti asvibise ma glycols akasara pasi pe50 ppm. Panguva imwe chete, European Union iri kunyora gadziriso yehurongwa hwayo hwekunyoresa, kuongorora, mvumo, uye kurambidza makemikari (REACH), ichida kuti vagadziri vatumire data rechepfu rezvigadzirwa zveEG panosvika 2025.
Matanho aya anonangana nekugadzirisa njodzi dzezvakatipoteredza, kunyanya munzvimbo dzemumvura, uko kuunganidzwa kweEG kwakabatana nekuderera kweokisijeni mumvura.
4. Mashandisirwo Matsva Mukuchengetedza Simba
Ethylene glycol iri kuwana rubatsiro rusingatarisirwi muhurongwa hwekuchengetera simba hwechizvarwa chinotevera. Sangano rekutsvaga muEurope rakagadzira chinhu chinotonhodza mabhatiri chisingabatike chichishandisa musanganiswa wemvura weEG wakagadziridzwa, zvichiwedzera manejimendi yekupisa mumabhatiri e lithium-ion ne25%. Mushonga uyu, unoshanda zvakanaka pa -40°C kusvika 150°C, uri kuyedzwa muzvigadzirwa zvemagetsi zvemotokari uye grid-scale storage units.
Pamusoro pezvo, zvinhu zvekuchinja-chinja kwechikamu (PCMs) zveEG-based phase-change zviri kuwana mukurumbira wekuchengetedza simba rezuva, uye miedzo ichangoburwa yakawana 92% yekushanda zvakanaka kwesimba mukati me500 cycles.
5. Kutsungirira Kwekugovera Zvinhu uye Kuchinja Kwematunhu
Kusawirirana kwezvematongerwo enyika uye zvikanganiso zvekufambisa zvinhu zvakakonzera kugadzirwa kwe ethylene glycol munzvimbo dzakasiyana. Zvivako zvitsva muMiddle East neSoutheast Asia zviri kushandisa mayuniti madiki ekugadzira akagadzirirwa kuwanikwa kwezvekudya zvemuno, zvichideredza kuvimba nezvirimwa zvikuru. Kuchinja uku kunowedzerwa nehurongwa hwekutarisira zvinhu hunotungamirirwa neAI hunoderedza marara eEG munzvimbo dziri pasi pemvura dzakadai sekugadzira mabhodhoro ePET.
Mhedziso: Kushanduka-shanduka kwezvinhu zvakawanda
Chikamu che ethylene glycol chiri pamharadzano, chichienzanisa kushandiswa kwayo kwakasimba mumaindasitiri nezvinodiwa nekukurumidza zvekuchengetedza. Kuvandudzwa mukugadzirwa kwegreen synthesis, dzimwe nzira dzebio-based, uye mashandisirwo ehupfumi hwakatenderera zviri kutsanangura patsva kukosha kwayo, nepo mitemo yakaoma ichisimbisa kudiwa kwemaitiro ane chekuita nezvakatipoteredza. Sezvo indasitiri yemakemikari ichitendeukira ku decarbonization, kuchinjika kwe ethylene glycol kuchasarudza kukosha kwayo mumusika uri kuchinja nekukurumidza.
Nguva yekutumira: Kubvumbi-07-2025