低温SCR脱硝催化剂研究进展

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宁汝亮^1,2，刘霄龙^2*，朱廷钰^1,2,3

1. 贵州大学化学化工学院，贵州贵阳 550025 2. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室，北京 100190 3. 中国科学院城市环境研究所区域大气环境卓越中心，福建厦门 361021

收稿日期:2018-06-12修回日期:2018-08-26出版日期:2019-04-22发布日期:2019-04-18
通讯作者:刘霄龙

基金资助:国家重点研发计划-铝业典型烟气硫硝控制技术

Research progress of low-temperature SCR denitration catalysts

Ruliang NING^1,2, Xiaolong LIU^2*, Tingyu ZHU^1,2,3

1. School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, China2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China3. Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, China

Received:2018-06-12Revised:2018-08-26Online:2019-04-22Published:2019-04-18

摘要/Abstract

摘要： 氮氧化物NOx(NO, NO2和N2O)是全球大气污染的主要污染物之一，引起光化学烟雾、酸雨、臭氧层破坏等环境问题，严重影响人们的生存环境和生活质量，引起了世界各国的广泛关注。针对固定源和移动源燃烧排放，各国制定了日益严格的排放标准。目前主要的脱硝技术分为选择性催化还原(SCR)、选择性非催化还原(SNCR)、氧化脱硝和活性炭吸附脱硝等。SNCR的应用有较高的条件，影响其成功运行的主要因素有温度、氨氮比、氨气在烟气中的分布和停留时间等，故SNCR的工业应用存在一定的局限性。SCR脱硝技术比其它脱硝技术应用更广泛，其中脱硝多安排于除尘脱硫后，此时温度多处于100?250℃之间。为提高SCR脱硝性能，低温SCR脱除NOx是目前研究最热门的烟气脱硝技术。本工作综述了近年来低温SCR脱硝催化剂的研究进展，介绍了锰基催化剂、钒基催化剂及碳基催化剂的发展现状，对单组分Mn基催化剂、负载型Mn基催化剂和复合型Mn基催化剂进行了综述，从V基催化剂的制备对脱销的影响和脱硝机理进行了表述，综述了过渡金属掺杂对C基催化剂的影响，阐述了烟气中H2O和SO2对催化反应的影响及低温SCR反应的脱硝机理，对低温SCR催化剂进行了总结并对其未来发展进行了展望。

引用本文

宁汝亮刘霄龙朱廷钰. 低温SCR脱硝催化剂研究进展[J]. 过程工程学报, 2019, 19(2): 223-234.
Ruliang NING Xiaolong LIU Tingyu ZHU. Research progress of low-temperature SCR denitration catalysts[J]. Chin. J. Process Eng., 2019, 19(2): 223-234.

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