Lub luag hauj lwm thiab cuam tshuam cov yam ntxwv ntawm denitrification thiab desulfurization engineering

Desulfurization: Feem ntau yog hais txog cov txheej txheem ntawm kev tshem cov sulfur ntawm roj ua ntej combustion thiab ua ntej flue gas emissions. Nws yog ib qho kev ntsuas tseem ceeb rau kev tiv thaiv thiab tswj cov pa phem. Feem ntau muaj peb txoj kev desulfurization: ua ntej combustion, combustion, thiab tom qab combustion. Ntau cov txheej txheem flue gas desulfurization tau siv dav hauv kev lag luam thiab muaj qhov tseem ceeb hauv kev kho mob ntawm ntau yam boiler thiab incinerator tso pa roj.

Denitration: Txhawm rau tiv thaiv kom tsis txhob muaj kuab paug nitrogen ntau dhau los ntawm cov thee hluav taws xob boilers, thee raug kho denitrification. Nws muab faib ua ntej combustion denitrification, combustion txheej txheem denitrification, thiab tom qab combustion denitrification. Raws li kev tsim cov txheej txheem ntawm nitrogen oxides hauv cov cement kiln, muaj ob txoj kev ntsuas kev txo nitrogen thiab tso tawm nitrogen hauv cov cement kiln: ib qho yog tswj los ntawm qhov chaw. Lwm hom yog kev tswj hwm los ntawm qhov kawg.

Txoj kev siv ntau tshaj plaws rau desulfurization thiab denitrification engineering yog desulfurization tom qab incineration, uas tseem hu ua flue gas desulfurization. Cov kev siv feem ntau suav nrog txoj kev ntub thiab qhuav.

Dry flue gas desulfurization thiab denitrification project:

Qhuav flue gas desulfurization yog hais txog kev siv cov hmoov los yog granular absorbents, adsorbents, los yog catalysts kom tshem tawm SO2 ntawm flue gas. Lub ntsiab lus ntawm qhuav flue gas desulfurization: CaCO3 txau rau hauv lub cub tawg yog kub kub calcined thiab decomposed rau hauv CaO, uas reacts nrog SO2 nyob rau hauv lub flue gas los tsim calcium sulfate; Kev siv electron beam irradiation los yog activated carbon adsorption los hloov SO2 mus rau ammonium sulfate los yog sulfuric acid yog sib sau ua ke hu ua dry flue gas desulfurization technology.

Nws qhov zoo yog cov txheej txheem yooj yim, tsis muaj dej phwj tuaj lossis cov teeb meem kev kho mob acid, kev siv hluav taws xob tsawg, tshwj xeeb tshaj yog qhov kub thiab txias ntawm cov pa roj purified flue, uas yog qhov tsim nyog rau dispersion ntawm chimney tso pa tawm thiab tsis tsim "dawb pa taws" tshwm sim. Cov roj purified flue tsis xav tau cua sov thib ob thiab muaj corrosiveness tsawg;

Wet flue gas desulfurization thiab denitrification project:

Cov dej ntub dej desulfurization txuj ci yog hais txog qhov nqus dej ua kua lossis slurry. Vim yog cov tshuaj tiv thaiv roj-kua, cov tshuaj tiv thaiv ceev ceev, lub zog siab, thiab kev siv tus neeg sawv cev desulfurization siab.

Cov yam ntxwv cuam tshuam rau kev ua haujlwm denitrification

1) Flue gas kub

Thaum ua haujlwm ntawm qhov kub thiab txias, ammonium ntsev, sulfuric acid, dej, thiab lwm yam condensates nyob rau hauv flue roj yog qis dua lawv cov dej dew point kub. Cov catalyst yuav nqus lawv mus rau hauv lub pores. Thaum qhov kub thiab txias, cov tshuaj no yuav evaporate, ua rau muaj kev nce siab hauv cov catalyst pores, thiab cov neeg kho tshuab kev nyuaj siab yuav ua rau catalyst puas. Tsis tshua muaj kub kuj tuaj yeem ua rau muaj qhov tshwm sim ntawm kev thaiv vim yog lub cim ntawm ammonium sulfate. Yog tias qhov kub thiab txias dhau lawm, cov catalyst yuav sinter, ua rau txo qis hauv thaj chaw tshwj xeeb ntawm cov catalyst, txo qis hauv kev ua haujlwm, thiab txawm tias deactivation.

2) NH3/NO2

Qhov nce ntawm ammonia khiav tsis tau tsuas yog txo cov denitrification tus nqi, tab sis kuj ua rau kom cov emission concentration ntawm unconverted NH3 nyob rau hauv lub purified flue gas, ua rau cov pa phem theem nrab. Thaum lub sij hawm tsim qauv, nws yog feem ntau tsim nyog los tswj cov NH3 / NO tus nqi nyob rau hauv qhov ntau ntawm 0.8 mus rau 1.2, thiab nws txawv raws li cov kev hloov hauv chav tsev load.

3) Inlet NO2 concentration

Thaum lub catalyst ntim tas mus li, raws li qhov inlet nitrogen oxide concentration nce, lub load nyob rau hauv lub catalyst pore maj mam nce, uas yuav ua rau ib tug txo nyob rau hauv lub denitrification efficiency ntawm lub catalyst.

4) Airspeed

Airspeed =tus qauv flue gas volume/catalyst volume. Thaum cov catalyst ntim tas li, airspeed yog tus nqi tas li, feem ntau yog 3000-5000h-1

5) Nyob rau lub sijhawm

Lub sij hawm nyob yog lub sij hawm cov tshuaj tiv thaiv ntawm nitrogen oxides nrog active tshuaj nyob rau hauv lub active site ntawm catalyst. Yog tias lub sijhawm luv luv, kev tshem tawm ntawm nitrogen oxides tsis txaus, thiab qhov denitrification efficiency txo; Yog tias lub sijhawm ntev dhau lawm, kev sib xyaw ua ke ntawm lwm cov nitrogen oxides thiab qhov chaw nquag yuav raug tiv thaiv, thiab kev ua haujlwm denitrification yuav poob qis.

6) Kev sib xyaw ua ke ntawm flue roj

Tus yuam sij rau SCR engineering tsim yog kom ua tiav qhov zoo tshaj plaws turbulent mixing NH3 thiab NOx. Yog li ntawd, cov denitrification reactants yuav tsum tau atomized thiab tov nrog flue gas ntau npaum li sai tau kom muaj kev sib cuag txaus nrog cov reactants tshem tawm. Kev sib xyaw ua tiav los ntawm kev txhaj tshuaj los ntawm kev siv cov pa roj ammonia rau hauv cov roj flue. Lub tshuab txhaj tshuaj tswj tus nqi, lub kaum ntse ntse, nrawm, thiab kev coj ntawm kev txhaj tshuaj reactant. Cov txheej txheem dav dav siv cov pa los yog cua ua cov pa roj carbon monoxide los ua kom lub zog nkag mus rau cov roj flue. Cov pa roj thiab ammonia sib xyaw ua ntej nkag mus rau SCR reactor. Yog hais tias qhov sib tov tsis txaus, NO txo efficiency txo. SCR tsim yuav tsum muaj cov kav dej ntev txaus ntawm qhov chaw txhaj tshuaj ammonia thiab cov reactor inlet kom ua tiav kev sib xyaw.

Cov ntsiab lus saum toj no yog npaj los ntawmLub tshuab cua sov zoo heevTuam txhab, super rhaub. MainlyKev tsim khoom: muaj cua sov cov ntsiab lus, ntsuas kub ntsuas, cov cuab yeej tsim khoom, cov khoom siv, thiab cov khoom siv raw xws li tubular rhaub, tubular rhaub, siv cov cua sov, cov cua sov ceramic, silicone roj hmab rhaub, thermocouples, thiab lwm yam.

Zoo siab txais tos cov neeg koom tes hauv kev lag luam thoob ntiaj teb los tham txog kev koom tes!