Daim Ntawv Thov Ntawm Smokeless Coal

Kev siv cov pa roj carbon monoxide
Cov pa luam yeeb tsis muaj pa taws yog siv rau hauv kev lag luam xws li chiv (nitrogen chiv, hluavtaws ammonia), ceramics, manufacturing thiab forging; Cov pa luam yeeb pulverized thee feem ntau yog siv rau hauv kev lag luam metallurgical rau kev txhaj tshuaj tua hluav taws (blast furnace txhaj thee feem ntau suav nrog anthracite, lean thee, lean thee, thiab roj thee).
Nws kuj tseem siv tau rau kev lim dej thiab ntxuav cov dej hauv tsev thiab kev lag luam. Cov kev siv tsis raug txiav txim siab raws li daim ntawv ntawm lub tank lim. Feem ntau, cov paving thickness ntawm ob - txheej lim khoom yog 300-400mm; Qhov kev pom zoo li qub yog 10-14m / h, thiab qhov yuam kev pom yog 14-18m / h; Lub thickness ntawm peb-txheej lim ntaub paving yog 450mm, nrog ib txwm pom tus nqi ntawm 18-20m / h thiab ib tug quab yuam pom tus nqi ntawm 20-25m / h. Lub backwashing ntawm lub tank lim siv cov dej ntws tawm, dej vapor flushing, lossis ntxiv los ntawm qhov dej ntws tawm.
calciner
Lub luag haujlwm ntawm lub qhov cub decomposition yog ua kom tiav cov tshuaj tiv thaiv endothermic ntawm carbonate decomposition nyob rau hauv cov xwm txheej ntawm cov khoom raug ncua hauv cov roj kub.
CaCO3=CaO+CO2↑
Nyob rau hauv rooj plaub uas cov cua sov muab tsis tau kiag li decompose cov khoom raw, cov txheej txheem decomposition tuaj yeem txiav txim siab raws li ib feem ntawm lub siab ntawm CO2 mus txog rau qee lub xeev sib npaug. Feem ntau hais lus, qhov sib npaug ntawm qhov cub tawg yog nyob rau hauv thaj tsam ntawm 850-900 degree. Qhov kub ntawm qhov sib faib hauv lub qhov cub tawg yog cuam tshuam nrog cov hauv qab no.
1) Lub tshav kub tso tawm ntawm combustion mus rau theem roj.
2) Lub tshav kub hloov pauv ntawm huab cua mus rau cov khoom raw khoom hmoov.
3) Thaum tshav kub kub absorbing tus nqi thaum lub sij hawm decomposition ntawm raw khoom hais.
Piv nrog rau kev siv cov thee bituminous, vim yog cov ntsiab lus qis dua ntawm cov thee anthracite, lub qhov cub tawg loj dua yuav tsum ua kom tiav cov khoom siv raw li qub thiab cov hmoov av burnout degree, los yog xav tau qhov kub thiab txias, los yog zom anthracite thee finer.
Thaum qhov kub ntawm qhov cua thib peb qis, cov roj evaporated los ntawm anthracite feem ntau tsis tuaj yeem tsim kom muaj cua sov txaus los nce qhov kub. Yog li ntawd, pub cov hmoov nplej ncaj qha mus rau hauv cov pa hluav taws xob uas muaj qhov kub thiab txias ntawm feem ntau 1000-1200℃tuaj yeem ua kom cov hmoov sib tov sib xyaw.
Tsis tas li ntawd, nws yuav tsum tau muab sau tseg tias tus nqi combustion thiab burnout lub sij hawm kuj nyob ntawm seb cov ntsiab lus O2 nyob rau hauv lub flue gas. Kev khiav hauj lwm ntawm lub qhov cub decomposition nrog cov huab cua ntau dua coefficient tuaj yeem ua rau lub sijhawm hlawv, tab sis feem ntau ua rau huab cua ntau dua coefficient yuav ua rau cov roj ntws los ntawm lub preheater. Raws li qhov tshwm sim, nws yuav ua rau muaj qhov sib txawv ntawm qhov sib txawv loj thiab cov pa cua kub siab, uas yuav ua rau kom muaj qhov hnyav ntawm cov kiv cua tseem ceeb ntawm lub qhov cub, thiab chav tsev kub ntawm tag nrho lub qhov cub yuav nce ntxiv.
Hloov txoj kev pub mis ntawm raw khoom yog qhov tseem ceeb heev. Thaum siv cov pa roj carbon monoxide ua haujlwm, nws yog qhov zoo tshaj kom muaj lub sijhawm lag luam tsim nyog rau kev sib xyaw ntawm cov pa roj carbon monoxide thiab cov khoom siv hmoov hmoov los xyuas kom meej qhov hluav taws kub tsis muaj pa taws. Yog li ntawd, cov khoom siv raw khoom noj rau hauv lub qhov cub tawg yuav tsum tau muab qhab nia thiab tswj kom tsim tau qhov kub thiab txias nyob rau hauv qab ntawm lub qhov cub decomposition. Txoj hauv kev zoo tshaj plaws los txiav txim siab seb cov khoom siv raw puas tau ua tiav qhov kev xav tau hauv lub qhov cub tawg yog txhawm rau txheeb xyuas tus nqi decomposition ntawm cov khoom siv raw nkag mus rau hauv qhov cub. Yog hais tias tus nqi decomposition ntawm cov khoom siv raw nkag mus rau hauv lub kiln tau ua tiav qhov kev xav tau, nws qhia tau hais tias kev sib xyaw ntawm anthracite hauv qhov cub tawg yog qhov tsim nyog.
lub qhov cub
Cov txheej txheem qhuav tshiab cov cement ntau lawm yog nruab nrog cov tshuab hluav taws xob niaj hnub, uas tau nruab nrog cov khoom siv hluav taws xob tsim nyog los ua kom cov pa roj carbon monoxide hlawv ntawm lub taub hau tsis muaj teeb meem. Kev ua haujlwm ntawm lub tshuab hluav taws xob tsis yog tsuas yog thauj thiab faib cov hmoov thee, tab sis kuj tseem ua kom muaj qhov zoo tagnrho ntev ntawm cov nplaim taws thiab cov pa roj uas tsim nyog. Qhov ntev ntawm cov nplaim taws tseem ceeb heev rau cov kiln qhuav tshiab. Yog hais tias cov nplaim taws luv luv, lub latent cua sov ntawm cov thee tsuas yog tso tawm rau hauv ib lub ntim me me xwb, thiab qhov kub ntawm cov nplaim taws yuav ua rau hauv zos siab heev. Ntawm qhov tsis sib xws, yog tias qhov nplaim taws ntev ntev, qhov kub yuav txo qis. Qhov ntev ntawm cov nplaim hluav taws yog tsuas yog tswj los ntawm kev tsav tsheb ntawm lub qhov cub.
Lub zog tsav ntawm lub burner=huab cua thawj (kg/s) x burner tip cua ceev (m/s)
Thaum lub zog tsav ntawm lub burner nce, lub nplaim ntev luv luv.
Hom ntawm cov thee nyoos tsis yog qhov tseem ceeb heev rau qhov ntev ntawm cov nplaim taws, tsuas yog xav kom lub sij hawm kub hnyiab ntawm ib qho hluav taws xob tsawg dua nws lub sijhawm nyob hauv cov nplaim taws.
Yog hais tias lub hom phiaj yog kom muaj tib lub nplaim taws ntev ntawm anthracite thiab bituminous thee, ces nws yuav tsum tau them nyiaj rau lub sij hawm burnout ntawm thee hmoov. Txoj hauv kev yooj yim yog zom cov pa taws uas tsis muaj hluav taws xob zoo.
Qhov siab -kub nruab nrab huab cua yuav ua kom kub sai sai rau cov teeb meem tsis haum ntawm cov hmoov nplej nkag mus rau hauv lub qhov cub thiab tawm sai sai. Thaum cov hmoov av tawm ntawm qhov kawg ntawm lub qhov cub, cov coke particles yuav ignite, yog li qhov ua tau zoo ntawm lub tshuab cua txias yuav muaj qee yam cuam tshuam rau kev siv cov pa roj carbon monoxide.
Kev siv cov pa roj carbon monoxide rau ntawm lub qhov cub hluav taws xob ntawm lub tshuab hluav taws xob yuav tsum tau ua raws li cov xwm txheej hauv qab no:
1) Coal hmoov tuaj yeem ua tiav qhov zoo txaus uas ua tau raws li qhov yuav tsum tau ua kom ntseeg tau tias kev sib tsoo thiab nplaim hluav taws.
2) Tswj txhim khu kev qha thiab ruaj khov thee hmoov pub.
3) Lub hauv paus tseem ceeb ntawm lub tshuab hluav taws xob yuav tsum muaj lub zog tsav txaus thiab hloov tau.
4) Lub tshuab hluav taws xob yuav tsum muaj peev xwm tsim cov nplaim hluav taws nrog cov cua hauv cov cua hauv thaj chaw combustion kom paub meej tias cov pa taws tsis muaj pa taws sai li sai tau.
5) Siv cov roj av bituminous los yog roj roj los pab combustion thaum pib lub qhov cub txias lossis thaum lub qhov cub kub tsis zoo.