Mpaka pano, pali mitundu yambiri yadziko losowazoyeretsa zoyeretsera zomwe zapangidwa ndikugwiritsidwa ntchito, ndipo njira zawo zogawira zimakhalanso zosiyanasiyana. Gulu losavuta komanso lodziwika bwino limachokera ku mawonekedwe a chothandizira, chomwe chingagawidwe mu mitundu iwiri: granular ndi uchi. Ma granular catalysts amagwiritsidwa ntchito γ- Al2O3 ndi chonyamulira chokhala ndi mphamvu yayikulu, yomwe imatha kunyamula 10% mpaka 20%dziko losowandi zina zoyambira zitsulo oxides. Ili ndi kukana kwabwino, koma kukana kwake kutulutsa kumakhala kwakukulu, komwe kumakhudza mphamvu zake ndi chuma chake. Zothandizira zokhala ndi zisa za uchi nthawi zambiri zimagwiritsa ntchito Dongqingshi, mullite, spodumene, ndi zitsulo zazitsulo monga zonyamulira, zokhala ndi mphamvu zochepa komanso zoyenera kunyamula zitsulo zamtengo wapatali. Chonyamulira uchi chimakhala ndi kutentha pang'ono, kutentha kwabwino, mphamvu yamagetsi, komanso kuyendetsa bwino chuma, ndipo panopa amagwiritsidwa ntchito kwambiri ngati chonyamulira. Ngakhale kuti njira yogawanitsa yochokera ku mawonekedwe a catalysts ndi yophweka, mapangidwe a catalysts, makamaka zigawo zogwira ntchito, sizingatchulidwe momveka bwino.
Ngati magulu a ntchito zothandizira ali osiyana,dziko losowacatalysts akhoza kugawidwa mu mitundu iwiri:dziko losowazopangira zitsulo zoyambira zitsulo zokhala ndi zitsulo zosawerengeka zapadziko lapansi zomwe zimakhala ndi zitsulo zamtengo wapatali zachitsulo. Zakale ndi mtundu wa chothandizira chomwe chimagwiritsidwa ntchito kwambiri pakali pano, chomwe chimakhala ndi zotsatira zabwino zoyeretsa pa CO ndi HC, koma zotsatira zosayera pang'ono pa NOx. Chotsatirachi chimakhala ndi zotsatira zabwino zoyeretsera pa NOx, kotero chidzakhala chigawo chachikulu cha chitukuko cha zida zoyeretsera mpweya ku China.
Nthawi yotumiza: Oct-12-2023