王舒婷,吴咪娜,杨子轩,毕廷涛,张文杰

• 1:云南省生态环境科学研究院
• 2:昆明冶金研究院有限公司
• 3:有色金属强化冶金新技术全国重点实验室

摘要(Abstract)：

选择性催化还原（SCR）脱硝技术中，V_2O_5-WO_3/TiO_2系催化剂凭借其突出的性能而得到广泛的应用，导致每年产生大量废弃的SCR催化剂，其作为危险固体废弃物直接堆存对环境产生巨大威胁。因此，针对性回收废SCR催化剂中V, W和Ti等战略金属，对环境、资源循环和经济效益有重要的意义。本文介绍了SCR催化剂组成和脱硝原理，以及在工业生产中造成SCR催化剂活性降低甚至失活的根本原因。详细综述了废SCR催化剂中有价金属的回收工艺，重点对比分析了无机酸、有机酸和碱液的浸出工艺，以及钠化、钙化和复合体系的火法工艺，对各类工艺的作用原理、处理效果以及优缺点进行了详细对比。针对当前处理工艺存在的能耗高、废液量大、处理成本高等问题，介绍了电解、微波辅助等新型处理工艺。最后，展望了废SCR催化剂回收再生工艺技术的发展方向，以期为该领域的技术创新与工程应用提供参考与借鉴。

关键词(KeyWords)： 选择性催化还原剂;酸浸;碱浸;回收;综合利用

Abstract:

Keywords:

基金项目(Foundation): 云南省基础研究计划项目（202501AU070040）资助

作者(Author): 王舒婷,吴咪娜,杨子轩,毕廷涛,张文杰

DOI: 10.13373/j.cnki.cjrm.XY25060004

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