摘要
针对Fenton/CaO调理后的市政污泥与稻壳混合成型燃料燃烧后烟气中SO_(2)和NO_(x)排放进行研究,分析了掺混比、温度和Fenton/CaO剂量对于SO_(2)和NO_(x)排放的影响规律.结果表明,污泥混合燃料中稻壳添加量增多,燃烧排放的SO_(2)和NO_(x)量逐渐下降,燃料硫转化率先降后升,燃料氮转化率上升;随着炉内温度的升高,污泥混合成型燃料燃烧排放的SO_(2)和NO_(x)量也将有所增加,燃料氮硫转化率也保持上升的趋势.经过Fenton/CaO调理后的混合成型燃料燃烧SO_(2)产生量与未经调理污泥燃烧SO_(2)排放量相比,低了近3.5倍,而NO_(x)生成量相对下降了1.3倍左右.经分析,调理污泥SS2与50%的稻壳在800℃温度下混合燃烧污染物排放性能最佳.
The SO_(2) and NO_(x) emission characteristics during combustion of municipal sludge conditioned with Fenton/CaO and rice husk(RH)blended briquette fuels were studied.The effects of the mixing ratio,temperature and Fenton/CaO dosage on SO_(2) and NO_(x) emission characteristics were analyzed.The results showed that with the increase of RH addition in the sludge mixed fuel,the emission of SO_(2) and NO_(x) gradually decreased,fuel-S conversion rate first decreased and then increased,and fuel-N conversion rate increased continuously.When the temperature gradually increased,the total emissions of SO_(2) and NO_(x) in the combustion process increased correspondingly.Compared with the SO_(2) emissions from the unconditioned sludge combustion,the SO_(2) generated by the Fenton/CaO conditioned mixed molding fuel combustion was nearly 3.5 times lower;while the NO_(x) generation was reduced by 1.3 times.The results showed that the mixed combustion of SS2 and 50%RH had the best emission performance at a combustion temperature of 800℃.
作者
许桂英
胡团桥
魏和涛
欧江波
郭晓龙
阳开东
方百增
XU Gui-ying;HU Tuan-qiao;WEI He-tao;OU Jiang-bo;GUO Xiao-long;YANG Kai-dong;FANG Bai-zeng(School of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China;Department of Chemical and Biological Engineering,University of British Columbia,Vancourver BC V6T 1Z3,Canada)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2021年第5期2108-2116,共9页
China Environmental Science
基金
国家自然科学基金资助项目(21406063)。
