摘要
介绍了低温脱硝机理,分析了贵金属、分子筛、碳基材料、金属氧化物等低温脱硝催化剂的特点和研究现状,总结了焦炉烟气低温脱硝催化剂的工业应用现状。针对目前低温脱硝存在抗硫、抗水性能差等关键问题,提出了固体酸低温脱硝催化剂。该催化剂在150～350℃范围内的NOx去除率可达98%,在烟气中含有1 000 ppm的SO2和8%vol.水蒸汽的情况下,该催化剂的脱硝率在测试的20 h内未出现明显下降。
The research progress of low temperature denitrification of coke oven flue gas is introduced,including the mechanism,low temperature SCR denitration catalyst (noble metal catalyst,molecular sieve catalyst,carbon based material catalyst and metal oxide catalyst) and industrial application of coke oven flue gas low temperature denitration catalyst.In view of the poor resistance of low-temperature denitration catalyst to SO2 and water vapor,the solid acid catalyst was proposed,which could remove 98% of NOx during 150-350℃.When the coke oven flue gas contained 1000 ppm SO2 and 8% vol water vapor,the denitrifieation rate would not decrease obviously in the first 20 hours.
作者
史德明
夏勇军
胡笳
张松
陈光
顾明言
贾勇
SHI De-ming;XIA Yong-jun;HU Jia;ZHANG Song;CHEN Guang;GU Ming-yan;JIA Yong(Anhui Xinehuang Energy & Environmental Protection Science & Techmology Co.Ltd., Ma'anshan 243002,China;School of Energy and Environment,Anhui University of Technology,Ma'anshan 243002,China)
出处
《能源环境保护》
2018年第6期1-6,共6页
Energy Environmental Protection
关键词
焦炉烟气
SCR
低温催化剂
固体酸
氮氧化物
Coke oven flue gas
SCR
Low temperature catalyst
Solid acid
Nitrogen oxides
