Zima galimoto urea madzi amaundana? Nanga bwanji kuzizira? Kodi mukufuna kuwonjezera antifreeze kutentha otsika urea?
Kutentha kukangotsika m'nyengo yozizira, eni magalimoto ambiri, makamaka kumpoto, mosakayikira amadandaula za kuzizira kwa thanki ya urea, adzafunsa ngati urea wagalimoto adzaundana, momwe amawumitsira, ngati awonjezera mwininyumba kutentha. urea ndi mavuto ena, ndipo ena eni galimoto mwachindunji m'malo wamba urea njira ndi urea njira -35 ° C, kuganiza kuti n'zosavuta, kwenikweni, si. Sikuti zimangowononga ndalama komanso zimawononga mosavuta dongosolo lachiwongolero chagalimoto. Tsopano tiyeni tifalitse mfundo wamba.
Chifukwa chiyani kuwonjezera urea solution?
Kusawonjeza kuli vuto lanji?
Zomwe zimatchedwa kuti urea solution yagalimoto, yomwe imadziwikanso kuti dizilo yotulutsa mpweya wamadzimadzi, imatanthawuza njira yothetsera urea yokhala ndi urea 32.5% ndi zosungunulira zamadzi oyera kwambiri, ndipo zida zake ndi makhiristo a urea ndi madzi oyera kwambiri. Imayikidwa mu thanki ya urea, pamene chitoliro cha urea chikapezeka kuti chili ndi nitrogen oxide, thanki ya urea imangotulutsa njira yothetsera urea ya galimoto, ndipo machitidwe awiri a REDOX amapezeka mu tanka ya SCR, yomwe imatulutsa nayitrogeni wopanda kuipitsidwa ndi kutulutsa madzi, kuchepetsa mpweya.
Mfundo yogwirira ntchito ya SCR: Ndi kutchuka kwa magalimoto anayi, mayiko asanu, komanso pambuyo pake magalimoto asanu ndi limodzi, urea yamagalimoto imatha kunenedwa kuti ndi chowonjezera chofunikira kwa SCR, komanso ndi chinthu chofunikira pamagalimoto adizilo monga magalimoto ndi mabasi. kukwaniritsa miyezo ya dziko lonse isanu ndi isanu ndi umodzi yotulutsa mpweya.
Kusawonjezera yankho la urea kwa nthawi yayitali, kapena kugwiritsa ntchito madzi oyera kapena madzi apampopi m'malo mwake, kungawononge kwambiri mphuno ya urea komanso dongosolo lonse lachipatala. Kuti mudziwe kuti m'malo mwa nozzle ya urea nthawi zambiri mumakhala ma yuan masauzande ambiri, dongosolo lonse limafunikira yuan 30,000 mpaka 50,000.
Kodi -35 ℃ njira yothetsera urea ndi chiyani?
Kodi mukufuna kuwonjezera njira yochepetsera kutentha kwa urea?
Njira yothetsera galimoto ya urea yotchulidwa m'mayiko anayi a mayiko anayi amayambira kuzizira pa kutentha kwabwino pansi -11 ° C. Opanga payekha amagwiritsa ntchito zowonjezera (ethylene glycol kapena ethylene glycol) kuti achepetse kuzizira kwa urea yamagalimoto, kuti akwaniritse cholinga choletsa kuzizira. Komabe, Mowa mu zowonjezera ndi yoyaka ndi kuphulika, ndi galimoto utsi chitoliro ndi pa kutentha kwambiri, ngati Mowa ndende ndi mkulu, izo kuwononga chitoliro utsi. Pazifukwa zina za kutentha, ethylene glycol imatulutsa zinthu za asidi, zomwe zingayambitse dzimbiri paipi yotulutsa ndikuyambitsa kutayikira. Choncho, palibe chifukwa chogwiritsira ntchito njira yotchedwa -35 ° C yamagalimoto a urea, ndipo chofunika kwambiri, yankho la -35 ° C la magalimoto a urea ndi pafupifupi 40% okwera mtengo kuposa wamba pamsika.
Kodi mankhwala a urea amaundana m'nyengo yozizira?
Bwanji ndikazizira?
Kodi mankhwala a urea amaundana m'nyengo yozizira? Bwanji ndikazizira? Ndipotu, mavuto amenewa, opanga kale ankaona, ambiri ayenera antifreeze Baibulo kumpoto kwa galimoto SCR dongosolo okonzeka ndi urea thanki thaw Kutentha ntchito, pamene injini kutentha madzi kufika madigiri 60, urea madzi kutentha ndi otsika kuposa -5 madigiri. Celsius, kuchokera pa injini mpope kwa urea thanki injini ozizira adzatsegula kufalitsidwa otaya, kuti thaw ndi urea madzi crystallization mu thanki urea.
Popeza SCR amafunikira injini kutentha kutentha kufika oposa 200 ° C kulowa ntchito, urea madzi sadzakhala sprayed pa kutentha otsika, kuti apereke nthawi yokwanira kwa thawed crystallized urea madzi.
Choncho, palibe chifukwa chodera nkhawa ngati yankho la urea lidzaundana, komanso momwe mungachitire pambuyo pozizira. Kuonjezera apo, ngakhale m'madera ozizira kwambiri, palibe chifukwa chowonjezera chomwe chimatchedwa kuti kutentha kwa urea.
Lofalitsidwa ndi:Wenrui Liang
Nthawi yotumiza: Feb-20-2024
