水泥行业脱硝催化剂的失活及资源化利用

Deactivation and Resource Utilization of SCR Catalysts in Cement Industry

随着水泥行业超低排放改造的深入推进,脱硝催化剂得到了更广泛的应用,但受高尘、高碱(碱土)金属、高重金属等恶劣工况影响,水泥行业脱硝催化剂的失活速率远快于火电行业。本文系统论述了水泥行业脱硝催化剂的失活机理,并对退役脱硝催化剂资源化利用的两条技术路线——再生以及回收利用的最新研究及产业化成果进行了总结。

With the deepening of“ultra-low emissions”transformation in the cement industry,SCR catalysts have been widely used.However,due to the severe operation conditions such as high dust,high alkali(alkaline earth)metals,and high heavy metals,the deactivation rate of SCR catalysts in the cement industry is much faster than that in the power industry.This paper discusses the deactivation mechanism of SCR catalysts in the cement industry,and summarizes the latest research and industrialization achievements of two technical approaches,i.e.the regeneration and recycling of deactivated SCR catalysts.