Nitrogen oxides yog ib qho tseem ceeb ntawm cov pa phem.Lawv ncaj qha cuam tshuam rau tib neeg kev noj qab haus huv, tab sis kuj ua rau muaj kev puas tsuaj loj heev rau ib puag ncig.Yuav kom paub meej, cov ntsiab lus hauv qab no tau ua:
(1) tshuaj lom neeg lub cev.
(2) yog ib qho tseem ceeb ntawm cov kua qaub nag thiab kua qaub pos huab.
(3) thaum nitrogen oxides thiab volatile organic tebchaw nyob rau hauv cov huab cua mus txog ib tug tej yam concentration, ib tug series ntawm photochemical cov tshuaj tiv thaiv yuav raug generated nyob rau hauv tshav ntuj, tsim photochemical smog.
(4) koom nrog hauv kev ua ozone txheej puas tsuaj.
(5) rhuav tshem cov nroj tsuag.
Muaj ntau ntau txoj hauv kev los tsim cov nitrogen oxide nyob rau hauv cov txheej txheem calcining ntawm cement clinker: ua ntej, thermal nitrogen oxide, uas yog tsim thaum cov cement kiln taub hau roj hlawv ntawm 1400 degree lossis siab dua; Qhov thib ob yog instantaneous nitrogen oxides, uas yog tsim. nyob rau hauv pem hauv ntej ntawm cov nplaim taws nyob rau hauv lub xub ntiag ntawm hydrocarbon dawb radicals.Qhov thib peb roj, cov tshuaj sib tov uas muaj nyob rau hauv cov roj.Nitrogen yog tsim.Theoretical tsom xam thiab cov tswv yim kev paub qhia tau hais tias qhov kev faib ua feem ntawm nitrogen oxide nyob rau hauv rotary kiln taub hau yog loj.Feem ntau. (NOX) emissions belongs rau thawj pawg ntawm kub NOX, thiab cov emissions ntawm ntau domestic ntau lawm kab tsis ua raws li lub teb chaws tus qauv (gb4915-2004 stipulated tias nitrogen oxide (NOX) emissions ntawm cement manufacturing yuav tsum tsawg tshaj li. 800mg / m3, txog 650ppm).Nitrogen oxides los ntawm combustion yuav txo tau los ntawm kev txhim kho combustion cov txheej txheem.Cov txheej txheem tseem ceeb yog raws li nram no:
1. Xaiv cov roj uas muaj cov ntsiab lus nitrogen tsawg, suav nrog roj denitrification thiab hloov mus rau cov roj nitrogen tsawg;
2. Txo cov cua coefficient thiab oxygen concentration nyob ib ncig ntawm cov roj;
3. Txo qhov kub thiab txias nrog huab cua tsawg dua.Lub ncov txo qis NO x ntawm cov tshuaj tiv thaiv thermal;
4. Ua kom lub sij hawm nyob ntawm combustible nyob rau hauv nplaim taws pem hauv ntej ncov thiab cov tshuaj tiv thaiv cheeb tsam ntawm cov pa oxygen concentration.
Burner yog ib yam khoom tseem ceeb los xyuas kom ruaj khov combustion thiab tag nrho combustion ntawm roj nyob rau hauv cement kev lag luam.Yog li ntawd, thiaj li yuav inhibit nox ntau lawm, nws yog tsim nyog los pib nrog lub burner.Xav txog cov yam ntxwv ntawm cement rotary kiln, qhov kub thiab txias oxidation cua. xav tau rau clinker calcining yuav tsum tau guaranteed.Yog li ntawd, txoj kev thib ob thiab plaub uas tau hais los saum no yog txoj hauv kev tseem ceeb los tiv thaiv kev tsim cov nitrogen oxides.Cov tsoos cement kiln burner yog tsim los ntawm cov cua sab nraud, sab hauv cua duct, coal duct, nruab nrab cua. duct, roj rab phom chim, cyclone separator thiab nplaim taws stabilizer.Cov cua sab nrauv yog teem rau ntawm cov cua duct, sab hauv cua duct yog telescopic thiab zawv zawg ntawm cov thee cua duct, thee pa duct yog teem rau hauv nruab nrab cua duct, Lub hauv paus cua duct yog teem rau ntawm cov roj phom phom, lub cyclone separator yog teem nyob nruab nrab ntawm lub puab cua duct thiab lub thee cua duct, thiab cov nplaim stabilizer yog ntsia rau hauv lub puab cua duct.Computed tomography.Ntawm lub hauv paus duct thiab chim. .Lub qhov hluav taws xob ntawm cov channel yog ywj siab thiab thaj tsam ntawm cov channel yog tsau.Txawm hais tias cov kav dej thee kuj tseem tuaj yeem nthuav dav thiab txav mus rau hauv cov kav dej sab hauv, thaj tsam ntawm qhov hluav taws xob yog tsau.Txawm hais tias cov cua ceev ntawm lub qhov hluav taws xob tuaj yeem hloov kho. ntawm cov duct, tsuas yog los ntawm cov duct.Los ntawm kev kho cov huab cua ntim ntawm txhua channel, yog tias koj xav kom cov cua ceev, koj yuav tsum tau ua kom cov huab cua volume.Tam sim no, peb yuav tsum tau kho cov huab cua sab hauv thiab sab nraum. tsis tsuas yog nce lub zog noj, tab sis kuj muab cov pa oxygen txaus los ua kom cov nitrogen oxides ntau lawm.Yog li ntawd, siab nitrogen oxide (NO x) muaj qhov pom tseeb tsis zoo.
Lub burner tsim los ntawm peb lub tuam txhab overcomes cov shortcomings ntawm cov cement kilns uas twb muaj lawm.Nws muaj peev xwm ua tau kom lub sij hawm nyob rau hauv combustible nyob rau hauv lub nplaim taws pem hauv ntej ncov thiab cov tshuaj tiv thaiv cheeb tsam, thiab muaj cov nyhuv ntawm inhibiting NOx. Nws belongs rau cement clinker calcining khoom.
