流态化燃烧NO、N2O和SO2同步排放试验研究  

Experimental study on NO, N2O and SO2 simultaneous emissions during fluidized bed combustion

作　　者：丰凡 程乐鸣[1] 张维国 施正展[1] 邱坤赞[1] FENG Fan;CHENG Le-ming;ZHANG Wei-guo;SHI Zheng-zhan;QIU Kun-zan(Institute for Thermal Power Engineering,Zhejiang University,State Key Laboratory of Clean Energy Utilization,Hangzhou 310027,China)

机构地区：[1]浙江大学热能工程研究所,能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《能源工程》2020年第2期56-60,70,共6页Energy Engineering

基　　金：国家重点研发计划资助项目(2016YFB0600202)。

摘　　要：研究了热态流化床实验台中燃烧褐煤、烟煤和无烟煤时SO2、NO和N2O同步排放浓度随过量空气系数、燃烧温度和钙硫比的变化规律。试验中过量空气系数变化范围为0.8~1.8,燃烧温度变化范围为750~950℃,钙硫比变化范围为0~3。结果表明:过量空气系数增加时NO和N2O的排放浓度增加,SO2排放浓度先增加后降低;燃烧温度增加时NO排放浓度增加,N2O排放浓度降低,SO2的排放浓度增加;加入碳酸钙后NO排放量增加,N2O和SO2的排放量减少。加入碳酸钙后可以有效降低SO2排放,同时会使NO排放增加、N2O排放降低;烟煤、无烟煤和褐煤燃烧时NO、SO2和N2O随过量空气系数的变化规律存在差别。The article reports the trends of SO2, NO and N2O emissions of lignite, bituminous and anthracite versus excess air ratio, combustion temperature and calcium-sulfur ratio on a laboratory-scaled fluidized bed combustion experiment system,while air ratio varied from 0.8 to 1.8;combustion temperature varied from 750℃ to 950℃, and calcium-sulfur ratio varied from 0 to 3.The results show that the increase of air excess ratio would lead to the increase of NO and N2O emissions, and SO2 emission would increase first and then decrease;the increase of combustion temperature would lead to the increase of NO, SO2 emission and decrease of N2O emission;the addition of CaCO3 would lead to the increase of NO emission and the decrease of N2O and SO2 emissions;bituminous, anthracite and lignite show different trends of SO2, NO and N2O emissions versus excess air ratio.

关 键 词：流化床 NO N2O SO2 同步排放 试验研究 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]