摘要
在烟气脱硝系统中,选择性催化还原催化剂的中毒和再生是广泛关注的问题。从催化剂的烧结、As、Ca、碱金属中毒等方面阐述了SCR脱硝催化剂的失活机理。通过总结催化剂的各种失活机理,可以有针对性地根据锅炉特性、燃料特性以及飞灰的成分进行SCR脱硝系统的优化设计,制定防止选择性催化还原催化剂失活的措施,这对延长催化剂寿命,降低SCR脱硝系统的运行维护费用具有重要意义。
Deactivation and regeneration of SCR catalysts have caught wide attention.Based on a comprehensive literature review,deactivation mechanisms of traditional SCR catalysts by catalyst sintering,arsenic,calcium,alkali and so on were discussed.Based on the research on various deactivation mechanisms,the optimal design of SCR denitration system and measures of preventing catalyst deactivation can be performed according to the boiler characteristics,fuel characteristics,and fly ash components.It is of great significance for expanding catalyst lifetime and reducing the operation and maintenance cost of the system.
出处
《电力科技与环保》
2011年第6期6-9,共4页
Electric Power Technology and Environmental Protection
关键词
SCR
脱硝催化剂
失活
综述
SCR
denitration catalyst
deactivation
summary
