Selective Non-Catalytic Reduction (SNCR) yog lub tshuab hluav taws xob hluav taws xob tseem ceeb los ntawm Jiangsu Jufeng. Nws ua haujlwm yam tsis muaj catalyst, tso siab rau ntawm qhov kub-kub qhov chaw ib puag ncig. Ib qho amino-based reductant (urea lossis aqueous ammonia) yog txhaj rau hauv lub qhov rais qhov kub thiab txias los xaiv txo NOₓ hauv cov pa roj rau hauv cov pa tsis muaj nitrogen, dej vapor, thiab CO₂ me me. Qhov "xaiv" xwm ua kom cov reductant nyiam reacts nrog NOₓ, txo qis sab cuam tshuam nrog oxygen.
Daim ntawv thov ntawm SNCR ntawm lub rotating kiln
1.Reaction Mechanism (nrog urea ua tus reductant)
Cov txheej txheem ua raws plaub theem sib law liag tom qab txhaj tshuaj:
atomisation & evaporation → urea pyrolysis (to HNCO and NH₃) → free-radical generation (forming NH₂ radicals) → NOₓ reduction (NH₂ converts NOₓ to N₂ and H₂O). Txhua theem yog qhov tseem ceeb thiab yuav tsum muaj kev tswj xyuas qhov kub thiab txias.
2.Qhov tseem ceeb Technical Advantages
- Qhov kub zoo tshaj qhov rais- tswj ntawm 900-1150 degree, qhov twg qhov txo qis peaks thiab denitrification efficiency yog maximised.
- Lub sijhawm nyob txaus- tag nrho cov kab ke (evaporation, decomposition, tshuaj tiv thaiv) yuav siv sij hawm tsawg kawg yog 0.5 vib nas this, ua kom tiav kev hloov dua siab tshiab.
- Superior atomisation thiab sib tov- compressed cua tawg urea tov rau hauv micron-loj cov tee dej, sib kis zoo ib yam thoob plaws lub qhov cub tawg ntu.
- Economical NSR tswj- cov ammonia-to-NOₓ molar ratio (NSR) yog ruaj khov nyob rau hauv 1.25-1.5 ntau yam, sib npaug emission ua raws li cov nqi khiav hauj lwm qis.
Cov ntsiab lus
Jiangsu Jufeng tus paub tab SNCR thev naus laus zis muaj kev ntseeg siab, muaj txiaj ntsig zoo, thiab tsis muaj kev daws teeb meem rau kev lag luam kiln NOₓ abatement, txhawb nqa los ntawm cov tshuaj tiv thaiv tsis zoo thiab kev ua haujlwm pov thawj.
- Jiangsu Jufeng - Huv combustion & flue-gas purification.
