燃煤电厂废V_(2)O_(5)-WO_(3)/TiO_(2)催化剂失活及再生研究进展

Research progress on deactivation and regeneration of spent V_(2)O_(5)-WO_(3)/TiO_(2) catalysts in coal-fired power plants

综述了废V_(2)O_(5)-WO_(3)/TiO_(2)(VWTi)催化剂处置现状、失活原因及再生方法和机理。通过对VWTi催化剂失活原因的讨论,分析并总结了废VWTi催化剂再生技术的研究进展,以期为高效环保处理处置废VWTi催化剂提供思路和方法。

On the one hand,V_(2)O_(5)-WO_(3)/TiO_(2)(VWTi)catalyst has become the mainstream commercial catalyst for waste gas denitration of coal-fired power plants due to its high selectivity and strong activity;on the other hand,a large number of spent VWTi catalysts generated by deactivation cannot be effectively disposed,resulting in waste of resources and accumulation of hazardous wastes.The disposal status,deactivation causes,regeneration methods and mechanism of spent VWTi catalysts are reviewed.Through analyzing the causes for deactivation of VWTi catalysts,the research progress in spent VWTi catalyst regeneration technology is analyzed and summarized,in order to provide ideas and methods for the efficient and environmentally friendly treatment and disposal of spent VWTi catalysts.