Kev taw qhia
Thaum lub sij hawm siv hluav taws xob ua rau pulverized coal, muaj ntau npaum li cas ntawm cov pa phem, uas Sox tso nyiaj rau 87%, NOx rau 67%, CO rau 67%, thiab soot rau 60%. Muaj ntau qhov teeb meem ntawm cov hluav taws kub tsawg tsawg thiab cov pa phem nyob hauv cov tuam txhab muaj kev kub ntxhov, thiab qhov nruab nrab cov thermal efficiency tsuas yog 60% ~ 65%. Vim li no, nws tsim nyog yuav tau kho kom muaj kev lag luam uas muaj roj hluav taws kub thiab thawb mus rau kev sib hloov ntawm NOx, tshwj xeeb tshaj yog cov kev tshawb fawb thiab kev tsim kho qis tsis yog NOx burners. Muaj ob lub ntsiab lus tswj kev tswj hwm ntawm NOx: kev tswj kav thiab qhov chaw tswj. Lub davhlau ya nyob twg yog yuav tshem NOx los ntawm cov roj tua hluav taws siv ntau yam kev tshem tawm. Kev tshem tawm cov cuab yeej yog xws li SCR thiab SNCR uas kim kim. Yog li, qhov chaw tswj (namely low NOx combustion) feem ntau yog saws los txo cov NOx hauv qhov combustion. Ntawm optimization ntawm lub tshuab hluav taws xob thiab lub cev, cov tsim tawm ntawm NOx tuaj yeem txo tus nqi qis dua, cov nqi qis me, nws muaj feem xyuam rau cov lag luam muaj peev xwm.
Nws muaj peb hom NOx uas ua rau pulverized thee combustion: thermal type, roj yam thiab hom ceev ceev.
Los ntawm peb yam tseem ceeb, nws tau qis tshaj qis NOx hlawv cov tshuab:
1. Tshem tawm cua tshuab hluav taws xob ntau: lub cim ntawm NOx tuaj yeem txo los ntawm kev tswj cov huab cua coefficient thiab txo cov pa oxygen. Qhov tsis zoo yog tias qhov txo qis qis yog tsawg thiab nws yog ib qho yooj yim uas ua rau tsis txaus hlawv.
2. Siv tshuab hluav taws xob ua dua: siv cov pa roj ua rau cov roj hmab tua hluav taws tuaj yeem txo qhov kub kub thiab cov pa oxygen, kom txo tau cov cim NOx. Nws qhov tsis zoo yog yooj yim los ua kom tsis txaus hlawv;
3. Siv tshuab hluav taws xob thiab tshuab hluav taws xob hlawv: roj muaj peev xwm muab faib ua ke thiab sib kis los ntawm tshuab raj. Kev kub nyhiab hauv cov pa oxygen tsis muaj peev xwm ua rau yus tsis sibtsoo, ua kom muaj zog thiab ua kom tsis muaj zog hauv NOx. Kev kub nyhiab ntawm cov pa hluav taws hauv lub xeev yuav ua rau cov huab cua tsis tshua muaj kev kub ntxhov, txo cov tiam no.
4. Teebmeem kev siv hluav taws xob: ua ntej, cov roj hlawv rau hauv lub xeev ntawm cov pa uas tsis zoo, thiab kev sib dhos tsis txaus, tsim kom muaj chaw txo kom tsis txhob muaj cov cim NOx. Tom qab ntawd, hno cua mus rau hauv cov nkev roj ntawm cov khoom tsis txaus sib txuas, kom ua kom muaj hluav taws txaus. Nws tsis yooj yim los tsim cov pa roj carbon monoxide NOx vim tias kub cev kub tsis txaus.
Cim npe nrov: pulverized thee tsawg TSIS burner, Tuam Tshoj, tuam ntxhab, lwm tus neeg, lub hoobkas, kho, muag, nqi, yuav
