Ua rau 1: kub tsis ua hauj lwm
Lub sij hawm ntev kub kub ntawm SCR catalyst yuav ua rau kub kub deactivation, uas yuav txo tau cov hlau ua hauj lwm muaj peev xwm nyob rau hauv SCR catalyst, yog li ntawd zoo heev txo cov catalyst kev ua.Txawm hais tias lub cav nyob rau hauv qhov zoo thiab yog qhov zoo debugged, txoj kev sib txawv yuav ua rau SCR catalyst kub ntau rau nws txoj kev siv tsis raug.
Ua rau 2: tshuaj lom neeg
Precious hlau catalyst ntawm SCR catalyst cab kuj muaj zog adsorption ntawm sulfur, phosphorus, carbon monoxide, tsis tiav combustibles, lead, manganese, thiab lwm yam. Nyob rau tib lub sij hawm, noble hlau catalyst muaj zog oxidation catalysis, uas ua rau cov adsorbed tsis tiav combustibles ntawm diesel roj yooj yim dua. yuav tsum tau oxidized, condensed thiab polymerized los tsim colloidal carbon deposit, ua rau blockage ntawm SCR catalyst.
Ua rau 3: carbon deposit blockage deactivation
Qhov blockage ntawm SCR catalyst carbon deposit yog maj mam tsim, uas yog reversible.Cov blockage tuaj yeem raug txo los ntawm cov txheej txheem tshuaj xws li oxidation thiab gasification, los yog los ntawm cov txheej txheem ntawm lub cev xws li desorption thiab evaporation ntawm volatile Cheebtsam thiab gaseous Cheebtsam.
Yog vim li cas 4: txoj kev congestion
Lub SCR catalyst yuav raug thaiv thaum tsav tsheb ntawm txoj kev congestible vim qhov siab tshaj plaws ntawm cov khoom tawg tsis tiav uas tsim los ntawm cov tsheb thaum lub sij hawm acceleration thiab deceleration.
Ua rau 5: Tsis muaj dismantling, tu thiab tu
Raws li ib tug loj npaum li cas ntawm colloid carbon yuav raug ntxuav thaum lub sij hawm ntxuav, nws yog ib qho yooj yim ua rau lub SCR catalyst yuav tsum tau thaiv, uas kuj yog vim li cas rau cov roj ntau zog ntawm ib co tsheb tom qab lub txij nkawm tsis disassembly.
Yog vim li cas 6: hnyav pob los yog hauv qab dragging
Lub catalytic carrier ntawm cov catalyst yog cov khoom siv ceramic lossis hlau.Tom qab lub tsheb nrog SCR catalyst ceramic catalyst cab kuj raug rub, kev sib tsoo hnyav tuaj yeem ua rau cov tub ntxhais ceramic ntawm cov catalyst thiab khawb nws.
Ua rau 7: Roj mov system tsis ua hauj lwm
Cov roj hluav taws xob yog qhov chaw uas muaj ntau yam tsis ua haujlwm.Txawm hais tias tam sim no muaj ntau lub cav tswj kev tswj hwm tus kheej tam sim no muaj kev tiv thaiv tus kheej, ib zaug lub tog raj kheej tsis ua haujlwm, lub khoos phis tawj yuav txiav tawm cov roj injector ntawm lub tog raj kheej thiab tiv thaiv nws los ntawm kev muab roj txhawm rau tiv thaiv lub cav thiab cov catalyst, ob peb lub tshuab muaj xws li. kev ua haujlwm siab heev tom qab tag nrho, thiab ntau lub tshuab tsis muaj cov haujlwm zoo li no tam sim no.
Ua rau 8: Tom qab kev kho mob tsis ua haujlwm
Thaum lub twj tso kua mis urea hauv kev kho mob tom qab muaj teeb meem;Lub nozzle ntawm lub urea system yog thaiv los yog muaj teeb meem zoo;urea nws tus kheej tsis tsim nyog;Cov dej ntws tawm ntawm cov yeeb nkab gas;Nws yuav ua rau tsis zoo atomization nyhuv ntawm urea txhaj.Cov tshuaj urea yog txau ncaj qha mus rau ntawm phab ntsa tso pa tawm.Nyob rau tib lub sij hawm, vim hais tias tus Tsov tus tw yeeb nkab yog ib txwm nyob rau hauv high kub, cov dej yog ib qho yooj yim mus evaporate, uas ua rau crystallization.
Post lub sij hawm: Dec-09-2022