摘要
固定源NH_(3)选择性催化还原(NH_(3)-SCR)脱硝技术是目前最有效的固定源氮氧化物排放控制技术.催化剂是NH_(3)-SCR脱硝技术的核心,其中,金属氧化物催化剂的应用最为广泛.国内外学者就固定源NH_(3)-SCR金属氧化物催化剂反应活性及其中毒机制进行了大量研究和探索.本文梳理了钒基、锰基、铈基、铁基以及铜基等固定源NH_(3)-SCR催化剂体系的研究进展,总结了对催化剂活性具有毒害作用的二氧化硫、碱金属和重金属的中毒机制及耐毒对策,并对目前存在的问题作出思考,进一步展望了未来固定源NH_(3)-SCR脱硝技术的发展趋势.
Selective catalytic reduction of NOx by NH3(NH3-SCR)technology is the most effective NOx emission control technology of stationary source at present.Catalyst is the core of NH3-SCR,among which metal oxide catalyst has been most extensively used.Domestic and foreign scholars have conducted a lot of studies and exploration on the reaction activity and poisoning mechanism of metal oxide catalyst of NH3-SCR in stationary source.Therefore,this paper reviews the research progress of stationary source NH3-SCR catalysts,including vanadium-,manganese-,cerium-,iron-and copper-based catalysts.The poisoning mechanism and toxic resistance strategy of sulfur dioxide,alkali metals,heavy metals and phosphorus/halogens are summarized.The existing problems are considered,and the development trend of stationary source NH3-SCR denitrification technology in the future is further prospected.
作者
熊尚超
钟若兰
周诗雨
王欣雨
欧洪君
XIONG Shang-chao;ZHONG Ruo-lan;ZHOU Shi-yu;WANG Xin-yu;Ou Hong-jun(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 610031,China)
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2023年第5期2161-2170,共10页
China Environmental Science
基金
国家自然科学基金资助项目(22206155)
中央高校基本科研业务费专项资金资助(2682022CX035)
国家环境保护大气复合污染来源与控制重点实验室开放基金资助(SCAPC202109)
中国博士后科学基金资助项目(2022M712632)。
关键词
固定源
NH_(3)-SCR
脱硝催化剂
中毒机制
耐毒对策
stationary source
NH3-SCR
denitration catalyst
poisoning mechanism
poisoning resistance strategy
