高温烟气脱硝催化剂的研究进展  

Research progress on high-temperature flue gas denitrification catalysts

作　　者：方思勇 张雷 Fang Siyong;Zhang Lei(Chongqing Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir,School of Environmental and Chemical Engineering,Chongqing Three Gorges University,Chongqing 404000,China)

机构地区：[1]重庆三峡学院环境与化学工程学院,三峡库区水环境演变与污染防治重庆市重点实验室,重庆404000

出　　处：《工业催化》2024年第9期16-25,共10页Industrial Catalysis

基　　金：重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX1008)。

摘　　要：氨气选择性催化还原(SCR)技术是一种广泛应用于工业排放氮氧化物(NO x)脱硝的方法。大型燃气轮机、船舶和柴油车等排放的烟气温度往往高于450℃,这要求催化剂在高温环境下兼具良好的催化活性、选择性以及稳定性,故开发高温SCR催化剂是脱硝领域中极具挑战的问题。综述在高温催化脱硝条件下分子筛催化剂(Cu基分子筛和Fe基分子筛)和金属氧化物催化剂的研究现状,分析了高温SCR催化剂的催化性能和理化特征,并提出影响高温SCR催化剂催化性能的关键因素。总结当前高温SCR脱硝技术存在的挑战,同时对未来的发展方向进行展望。NH 3 selective catalytic reduction(SCR)technology is a widely used method for eliminating nitrogen oxides(NO x)from industrial emissions.The flue gas temperature emitted from large gas turbines,ships and diesel vehicles is often higher than 450℃,which requires catalysts with good catalytic activity,selectivity and stability under high temperature,so the development of high-temperature SCR catalysts is a challenging issue in the field of denitrification.The current research status of molecular sieve catalysts(Cu-based molecular sieve and Fe-based molecular sieve)and metal oxide catalysts under high-temperature catalytic denitrification conditions is reviewed,the catalytic performance and physicochemical characteristics of high-temperature SCR catalysts are analysed,and the key factors affecting the catalytic perf-ormance of high-temperature SCR catalysts are proposed.The challenges of current high-temperature SCR denitrification technology are summarised,while the future development direction is prospected.

关 键 词：催化剂工程 高温脱硝 NH 3选择性催化还原 Cu基分子筛 Fe基分子筛 金属氧化物催化剂 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]