冶炼烟气脱硝用碳基低温NH_(3)-SCR催化剂研究进展  

Research progress on carbon-based low-temperature NH_(3)-SCR catalysts for smelting flue gas denitrification

作　　者：孟豪 折媛[1,2] 苗红生 李纪萱[1] 沈正华 邢相栋 张朝晖[1] MENG Hao;SHE Yuan;MIAO Hongsheng;LI Jixuan;SHEN Zhenghua;XING Xiangdong;ZHANG Zhaohun(School of Metallurgical Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;Xining Special Steel Co.,Xining 810000,China)

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055 [2]西宁特殊钢股份有限公司,西宁810000

出　　处：《功能材料》2024年第8期8075-8082,共8页Journal of Functional Materials

基　　金：陕西省科技厅重点研发计划项目(2024GX-YBXM-422);榆林市科技局产学研合作项目(2023-CXY-194);陕西省创新能力支撑计划项目(2023-CX-TD-53)。

摘　　要：目前在冶炼烟气治理脱硝中使用的NH_(3)-SCR催化剂存在操作温度窗口窄、低温(120℃)下催化活性不高、易中毒等不足,限制了其广泛应用。因此,开发低温高效、抗中毒性能好、稳定性强的催化剂成为当前研究重点。碳基催化剂由于其来源广泛、吸附性能强、催化活性好等优点备受关注,在脱硝方面有广阔的前景。本文基于碳基低温NH_(3)-SCR催化剂的最新研究进展,从碳基催化剂材料、添加活性组分、酸碱改性、抗SO_(2)与H_(2)O中毒与等方面介绍了影响催化剂脱硝活性的因素,分析了碳基催化剂的NH_(3)-SCR脱硝反应机理,并提出利于研发低温NH_(3)-SCR脱硝性能优异、抗中毒性能好的碳基催化剂的方向。At present,the NH_(3)-SCR catalyst used in smelting flue gas treatment and denitrification has shortcomings such as narrow operating temperature window,low catalytic activity at low temperature(120℃),and easy poisoning,which limits its wide application.Therefore,the development of catalysts with low temperature efficiency,good anti-toxicity performance and strong stability has become the focus of current research.Carbon-based catalysts have attracted much attention due to their wide range of sources,strong adsorption performance,and good catalytic activity,and have broad prospects in denitrification.Based on the latest research progress of carbon-based low-temperature NH_(3)-SCR catalysts,the factors influencing the denitrification activity of catalysts were introduced from the aspects of carbon-based catalyst materials,addition of active components,acid or base modification,resistance to SO_(2) and H_(2)O poisoning,and the NH_(3)-SCR reaction mechanism of carbon-based catalysts is analyzed,and the direction of carbon-based catalysts with excellent denitrification performance and anti-poisoning performance of low-temperature NH_(3)-SCR is proposed.

关 键 词：脱硝 低温 碳基 冶炼烟气 

分 类 号：X757[环境科学与工程—环境工程]