脱硝用催化剂毒化研究现状及展望  

Research status and prospect of poisoning in denitration catalysts

作　　者：文桢晶 黄帮福[1,2] 杨征宇 代蒙 李婉君 WEN Zhenjing;HUANG Bangfu;YANG Zhengyu;DAI Meng;LI Wanjun(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Clean Metallurgy Key Laboratory of Complex Iron Resources,University of Yunnan Province,Kunming 650093,Yunnan,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]云南省高校复杂铁资源清洁冶金重点实验室,云南昆明650093

出　　处：《钢铁研究学报》2022年第7期605-612,共8页Journal of Iron and Steel Research

基　　金：云南省应用基础研究计划面上资助项目(202001AT070029,2019FB077);钢铁冶金及资源利用省部共建教育部重点实验室开放基金资助项目(FMRUlab-20-4)。

摘　　要：脱硝催化剂易被烟气复杂成分毒化导致失活,故研发具有良好抗毒化能力和低温催化活性的催化剂是研究重点。综述了脱硝用催化剂毒化研究现状,重点阐明了工业烟气中SO_(2)和H_(2)O、碱金属(K)、碱土金属(Ca、Mg)、重金属(Zn)对脱硝用催化剂的毒化机制和炭基催化剂的中毒问题。针对当前炭基催化剂毒化机制尚不清晰且重金属对其毒化严重等问题,指出了今后研究重点是深入重金属锌对炭基催化剂中毒机制研究,并对提高催化剂的抗硫抗水性、耐碱/碱土金属及重金属中毒能力进行了展望。Denitration catalysts are easily poisoned by complex components of flue gas.As flus-gas poisoning was a major cause of catalyst deactivation,low-temperature catalysts with strong anti-poisoning ability were actively researched.The research status of poisoning in denitration catalysts was summarized,focusing on the poisoning mechanisms of SO_(2) and H_(2)O,alkali metals(K),alkaline earth metals(Ca,Mg),and heavy metals(Zn) in the industrial flue gas.Despite remarkable advances,the poisoning mechanism of carbon-based catalysts remained poorly understood.The poisoning mechanism of heavy metals on carbon-based catalysts,especially the poisoning mechanism of zinc,was recommended for future work.The prospects of improving the resistance of catalysts to sulfur and water,alkali and alkaline earth metals,and heavy metal poisoning,were also discussed.

关 键 词：脱硝 SCR 毒化 炭基催化剂 烟气 

分 类 号：TF05[冶金工程—冶金物理化学]