SCR烟气脱硝催化剂再生研究进展

Research progress on the regeneration of SCR catalysts for flue gas denitrification

介绍了SCR烟气脱硝催化剂的水洗再生、热再生、热还原再生、酸液再生、SO2酸化热再生、活性盐溶液活化再生等再生方法的研究进展。再生技术应用时,应根据SCR催化剂的配方、构型、应用场合等因素,分析SCR催化剂失活的主要原因,选择适当的一种或者几种再生方法,才能达到提高或者恢复催化剂脱硝活性的目的。

Introduced the research process on the regeneration technologies of SCR catalysts for flue gas denitrification,including water washing,thermal regeneration,thermal reduction regeneration,acid treatment,thermal regeneration by SO2,activated regeneration by active salt solution,etc.are summarized.Prior to selecting the regeneration technologies of SCR deactivated catalysts,the main reasons resulting in the catalyst deactivation should be analyzed according to the formula,configuration and application of catalysts.One or some kinds of regeneration technologies should be choose suitably in order to improve or recover the deNOx activity of deactivated catalysts.