SCR脱硝系统喷氨隔栅优化调整试验研究  

Optimization and adjustment experiment study on ammonia injection grid of SCR denitration system

作　　者：曾国兵[1] 牛宗伟 刘聪[1] ZENG Guo-bing;NIU Zong-wei;Liu Cong(Anhui Electrical Engineering Professional Technique College,Hefei 230051,China;Fengcheng PhaseII Power Plant of Jiangxi Ganneng Co.,Ltd.,Fengcheng 331100,China)

机构地区：[1]安徽电气工程职业技术学院,安徽合肥230051 [2]江西赣能股份有限公司丰城二期发电厂,江西丰城331100

出　　处：《安徽水利水电职业技术学院学报》2021年第2期52-57,共6页Journal of Anhui Technical College of Water Resources and Hydroelectric Power

基　　金：安徽省2019年高校学科(专业)拔尖人才学术资助项目(gxbjzD90)。

摘　　要：燃煤电厂超低排放改造后,存在SCR出口氨逃逸高于设计值且分布不均匀、空预器烟气侧阻力持续上升等问题,文章针对以上问题对SCR脱硝系统喷氨格栅优化调整进行试验。试验表明,通过有针对性地调节喷氨格栅开度,使得SCR装置的总尿素溶液用量下降,平均氨逃逸保持在6ppm左右,有效地降低了空预器堵塞的风险。After ultra-low emission retrofit in coal-fired power plants,there are problems such as the escape of ammonia from the SCR outlet is higher than the design value and the distribution is uneven,and the flue gas side resistance of the air preheater continues to rise.In view of the above problems,the paper carries on the optimization and adjustment experiment study on ammonia injection grid of SCR denitration system.The tests show that,by means of adjusting the opening of the ammonia injection grid,the total urea solution consumption of the SCR device is reduced and the average ammonia escape is kept at about 6 ppm,which effectively reduces the risk of air preheater blockage.

关 键 词：超低排放 喷氨隔栅 NOx 氨逃逸 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]