Tsheb urea thiab feem ntau hais tias kev ua liaj ua teb urea muaj qhov sib txawv. Lub tsheb urea yog los txo cov nitrogen thiab hydrogen compounds pollution emitted los ntawm diesel cav, thiab ua lub luag hauj lwm nyob rau hauv kev tiv thaiv ib puag ncig. Nws muaj cov kev cai nruj sib xws, uas yog tsim los ntawm cov purity siab urea thiab dej deionized. Ib qho ntawm cov cim tseem ceeb yog kev tswj hwm qib ntawm impurities. Cov hais, hlau ions, minerals thiab lwm yam impurities nyob rau hauv urea muaj ntau heev, thiab qhov teeb meem yog pom tseeb heev. Thaum tsis tsim nyog urea ntxiv, nws yuav ua rau kev ua tsis tiav tom qab, thiab tseem tsim kev puas tsuaj rau kev ua haujlwm tom qab. Thiab rau kaum tawm txhiab yuan tom qab kev ua tiav, lossis xaiv hom urea pom zoo los ntawm cov chaw tsim khoom.
Dab tsi yog cov yam ntxwv?
Weichai tshwj xeeb urea tov ua tau raws li tus qauv thoob ntiaj teb ISO22241-1, German tus qauv DIN70070 thiab lub teb chaws tus qauv GB29518, ua tim khawv zoo.
Kev puas tsuaj ntawm cov khoom cuav thiab cov khoom tsis zoo: cov kev daws teeb meem zoo ntawm cov urea tsis zoo tsis yog raws li tus qauv, qhov purity tsis txaus, ntau impurities hauv urea, yooj yim rau crystallize, thaiv cov urea nozzle, lub sijhawm no, urea nozzle tuaj yeem ua tau. tshem tawm, rhuab thiab boiled rau dissolution. Txawm li cas los xij, kev siv lub tsheb mus ntev urea uas tsis ua raws li cov qauv tshuaj ntsuam xyuas zoo tau teev tseg los ntawm lub xeev yuav txo qis NOx hloov pauv, txo qhov ua tau zoo thiab lub neej ntawm cov catalyst, thiab ncaj qha cuam tshuam rau SCR system, uas ua rau irreversible post. - kev ua tsis tiav.
Super huv
Yuav kom ua tiav cov kev xav tau ntawm ultra-siab urea zoo, Weichai tshwj xeeb urea tov yuav tsum mus los ntawm ntau yam kev pom thiab pom tseeb hauv cov txheej txheem tsim khoom, thiab cov khoom ntim yuav tsum tsis muaj plua plav. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm SCR system: cov pa nkag mus rau hauv cov yeeb nkab tawm ntawm lub charger turbine. Nyob rau tib lub sijhawm, los ntawm urea txhaj tshuaj tau teeb tsa hauv DPF, urea droplets undergo hydrolysis thiab pyrolysis cov tshuaj tiv thaiv nyob rau hauv qhov kev txiav txim ntawm qhov kub thiab txias tso pa roj, tsim kom muaj NH3, NH3 txo NOx rau N2 nyob rau hauv qhov kev txiav txim ntawm catalyst. Hauv SCR txo qhov system, qhov concentration ntawm cov tshuaj urea yog ib qho ntawm cov ntsiab lus tseem ceeb, tab sis siab dhau los yog qis heev tsis tuaj yeem txhim kho kev hloov pauv ntawm NOx, tab sis yuav ua rau plam ntawm ammonia thiab tsim cov pa phem thib ob ntawm ammonia.
Kev hloov pauv siab
Nrog tshwj xeeb urea tov nrog ib tug concentration ntawm 32.5% raws li txo tus neeg sawv cev; Raws li tus qauv kev teeb tsa ntawm kev kho mob tom qab SCR system, urea noj suav txog li 5% ntawm cov roj noj. Siv lub peev xwm ntawm 23Lde urea tank ua piv txwv, lub mileage tuaj yeem ncav cuag 1500-1800 mais.
Urea ntxiv dej: feem ntau ib tug neeg nug seb urea puas tuaj yeem ntxiv cov dej ntxhia, dej hau thiab lwm yam tshuaj. Qhov no yog tsis tau kiag li, muaj ntau impurities nyob rau hauv cov kais dej, deb tshaj peb qhov muag liab qab saib. Calcium, magnesium, sodium thiab lwm cov ntsiab lus hauv cov kais dej thiab cov dej ntxhia tau yooj yim tsim cov khoom siv, yog li thaiv cov urea nozzle, ua rau muaj kev ua txhaum tom qab. Cov kua ntxiv hauv urea, tuaj yeem tsuas yog cov dej deionized. urea tank qib kua yuav tsum khaws cia ntawm 30% thiab 80% ntawm tag nrho cov ntim ntawm urea tank. Urea cia: Urea tov yuav tsum tau khaws cia rau hauv lub thawv kaw hauv qhov chaw txias, qhuav, kom deb ntawm cov oxidants muaj zog. Thaum sau, xws li ncaj qha mus rau hauv lub tank urea pov tseg urea splashing, thiab tsim ib puag ncig muaj kuab paug. Cov cuab yeej ua haujlwm tshaj lij raug pom zoo.
Lus Cim rau filling urea: urea tov yog corrosive rau ntawm daim tawv nqaij. yog tias daim tawv nqaij lossis ob lub qhov muag ntxiv, yaug nrog dej kom sai li sai tau; yog tias qhov mob txuas ntxiv mus, thov nrhiav kev pab kho mob. Yog tias nqos tsis tu ncua, txwv tsis pub ntuav, nrhiav kev kho mob sai
Post lub sij hawm: May-30-2024
