中低温NH3-SCR催化剂抗中毒与再生研究进展

Research progress on anti-poisoning and regeneration of catalysts at medium-low temperature NH3-SCR

冯斌 ¹邹伟欣 ¹赵勇刚 ²董林¹

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作者信息

1. 南京大学环境学院,污染控制与资源化研究国家重点实验室,江苏省机动车尾气污染控制重点实验室,南京,210023
2. 江苏诺环新材料科技有限公司,镇江,212415
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摘要

中低温氨选择性催化还原(NH3-SCR)氮氧化物(NOx)催化剂广泛应用于钢铁、焦化、陶瓷、玻璃、水泥、垃圾焚烧、燃气锅炉等非电行业.不同工况下,硫、酸、碱金属、飞灰等会导致SCR催化剂中毒.因此,如何制备抗中毒性能好的脱硝催化剂,并且有效再生失活SCR催化剂一直是研究热点.本综述针对不同中低温SCR的工况,对比总结脱硝催化剂的应用、抗中毒机制与再生方法,最后对中低温SCR脱硝催化技术进行展望.

Abstract

The selective catalytic reduction(SCR)technology of NOx with NH3 at medium-low temperature are widely used in steel,coking,ceramics,glass,cement,waste incineration,gas boilers and other non-electric industries.Different working conditions,e.g.,sulfur,acid,alkali metals,fly ash,etc.lead to the poisoning of SCR catalysts.Therefore,SCR catalysts with the excellent anti-poisoning ability and regeneration performance are big challenges and attract more attention.This review compares and summarizes the antipoisoning mechanisms and regeneration methods under various industrial SCR conditions of medium-low temperature.Finally,the prospect of SCR technology at medium-low temperature is discussed.

关键词

中低温氨选择性催化还原/脱硝/催化剂/抗中毒/再生

Key words

medium-low temperature NH3-SCR/deNOx/catalyst/antipoisoning mechanisms/regeneration

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基金项目

国家自然科学基金(21972062)

出版年

2024

环境化学

中国科学院生态环境研究中心

环境化学

CSTPCD北大核心

影响因子：1.049

ISSN：0254-6108

参考文献量21

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