化工进展2016，Vol.35Issue(10)：3306-3312,7.DOI:10.16085/j.issn.1000-6613.2016.10.041
燃煤电厂废弃SCR脱硝催化剂元素回收研究进展
Research progress of element recovery of waste De-NOx SCR catalyst from coal-fired power plants
摘要
Abstract
With the large scale application of the SCR De-NOx technique and the construction of the SCR systems,the treatment of the waste SCR catalysts has gained increasing attentions in recent years. Recovery of valuable elements is considered to be a promising way. This paper summarizes different element recovery techniques for three major elements of V,W and Ti(or Mo). The element Ti can be recovered through the sodiumzation-calcination or concentrated alkali leaching,followed by acid washing to obtain titanium dioxide,while the element V can be recovered by the ammonium salt precipitation,extraction or electrolysis method,as vanadium pentoxide or ammonium vanadate. And the element W can be recoveredvia the calcium salt precipitation,sodium crystallization or acid precipitation method,as tungsten trioxide. These methods are compared with each other,to provide information for the development of a reasonable solution for the waste SCR catalysts. Moreover, further research work is pointed out as to optimize the acid washing conditions in the recovery of Ti as well as the purification techniques of V and W,so as to enhance the purity of the recovered products.关键词
催化剂/回收/废物处理/选择性催化还原法/脱硝催化剂Key words
catalyst/recovery/waste treatment/SCR/De-NOx分类
化学化工引用本文复制引用
陈晨,陆强,蔺卓玮,李文艳,董长青..燃煤电厂废弃SCR脱硝催化剂元素回收研究进展[J].化工进展,2016,35(10):3306-3312,7.基金项目
国家重点基础研究发展计划（2015CB251501）及中央高校基本科研业务费（2015ZZD02）项目。 （）
