超超临界机组SCR脱硝系统大颗粒灰拦截技术  

Interception Technology for Large Particles from Flue Gas of SCR Denitrification Systems in Supercritical Units

作　　者：刘希念 唐晶 张家宽 江永[1] 钟少伟[1] 王硕 Liu Xinian;Tang Jing;Zhang Jiakuan;Jiang Yong;Zhong Shaowei;Wang Shuo(Huaneng Haimen Power Plant,Shantou 515132,Guangdong Province,China)

机构地区：[1]华能海门电厂,广东汕头515132

出　　处：《发电设备》2019年第2期112-114,118,共4页Power Equipment

摘　　要：针对烟气携带大颗粒灰到催化剂表面导致催化剂堵塞影响了SCR脱硝设备正常运行的情况,采用优化烟道流场设计、加装褶皱式拦截网及安装空气炮吹灰装置等方案后,可有效防止大颗粒灰进入SCR脱硝反应器,为同类型机组解决催化剂堵塞问题提供参考。To solve the blocking problem existing on the surface of catalysts caused by large particles entrained by flue gas, which has negative effect on operation of the selective catalytic reduction(SCR) denitrification system, following countermeasures were proposed and taken, such as optimizing the design of flow path flow field, adding pleated interception screen as well as installing soot blower, etc. Results show that after taking above countermeasures, the large particles can be captured effectively before the flue gas flowing into the SCR denitrification unit. This may service as a reference for similar units to deal with the blocking problem in relevant catalysts.

关 键 词：燃煤电厂 SCR 脱硝 大颗粒灰 拦截网 流场优化 

分 类 号：TM621.73[电气工程—电力系统及自动化] X513[环境科学与工程—环境工程]