摘要
为控制燃煤锅炉烟气中氮氧化物的排放控制,选择性催化还原(SCR)脱硝技术被大量推广应用,该技术的核心在于SCR脱硝催化剂的性能。对于活性降低但满足再生条件的SCR脱硝催化剂可以通过再生处理后进行循环利用。对由于不同原因失活的催化剂,可采用不同的或复合再生技术。SCR脱硝催化剂作为一种耗材,达到使用寿命后将最终变为危险固体废弃物,需对废弃SCR脱硝催化剂中金属的回收和无害化处理进行研究。通过研究,分析了失活SCR脱硝催化剂的再生及无害化处理工艺技术,提出了未来的发展思路和方向。
To control the large amount of nitrogen oxides in the flue gas exhausted by coal-fired boilers,selective catalytic reduction(SCR)denitration technology has been widely applied.The key of the technology is the performance of SCR denitration catalyst.SCR denitration catalyst with low activity but in favorable regeneration conditions can be recycled by regeneration treatment.Different or integrated regeneration techniques can be used on catalysts deactivated for different reasons.With the increase of regeneration times,SCR denitration catalyst as a consumable material will eventually become hazardous solid waste.The deactivated SCR denitration catalyst harmless treatment and recycling of metal elements are studied,and correspondent treatment techniques are put forward,which provides concepts and directions for future development.
作者
张春平
秦川
杨岗
刘璐
胡月龙
程伟良
ZHANG Chunping;QIN Chuan;YANG Gang;LIU Lu;HU Yuelong;CHENG Weiliang(School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China;Overhaul Departments,Sichuan Electric Power Company of State Grid Corporation,Chengdu 610041,China;Xuzhou Jieneng Power Equipment Company Limited,Xuzhou 221008,China;Mechanical Conveying Department,Datang Environmental Industry Group Company Limited,Beijing 100097,China)
出处
《华电技术》
CAS
2020年第1期8-14,49,共8页
HUADIAN TECHNOLOGY
基金
国家重点研发计划资助项目(2018YFB060420103)
关键词
脱硝催化剂
选择性催化还原
失活
再生
无害化处理
金属回收
denitration catalyst
SCR
deactivated
regeneration
harmless treatment
recycling of metal elements
