摘要
本文对脱硝系统存在的喷氨过量问题进行了具体分析,针对性地提出了一些解决办法:(1)对喷氨系统进行分区,使各局部区域喷氨量控制与总喷氨量控制更加精确且具备联动功能;(2)通过设置喷氨总量与局部喷氨量反馈调节机制,使其对机组变工况工作具有针对性、实时性和准确性;(3)改造CEMS采样方法,采用烟道截面取样法,使脱硝系统采集的数据更加准确,更具普适性;(4)总过增设总喷氨量控制和局部喷氨量控制两套系统,两套系统相互联动,起到精准控制喷氨量的作用。
This paper analyzes the problem of excessive ammonia injection in denitration system,and puts forward some solutions:(1)partition the ammonia injection system to make the ammonia injection control in each local area and the total ammonia injection control more accurate and have linkage function;(2)By setting the feedback regulation mechanism of total ammonia injection and local ammonia injection,it has pertinence,real-time and accuracy for the unit under variable working conditions;(3)The CEMS sampling method is reformed and the flue section sampling method is adopted to make the data collected by the denitration system more accurate and universal;(4)Two systems of total ammonia injection control and local ammonia injection control are added to the total superheater.The two systems are interconnected to accurately control the ammonia injection.
作者
陈国宝
易秉恒
翁文霖
林周勇
连达得
李颖
张健
CHEN Guo-bao;YI Bin-heng;WENG Wen-lin;LIN Zhou-yong;LIAN Da-de;LI Ying;ZHANG Jian(China Energy Quanzhou Thermoelectricity Co.,Ltd.Quanzhou 362801,China;Shenzhen Anruixin Electric Power Technology Co.,Ltd.Shenzhen 518038,China)
出处
《全面腐蚀控制》
2022年第12期24-27,共4页
Total Corrosion Control
关键词
锅炉
煤
喷氨
NOx
boiler
coal
spraying ammonia
NOx
