300 MW燃煤机组低NOx改造后运行调整优化分析  

Optimization Analysis and Operation Adjustment of a 300 MW Coal-fired Unit After Low NOx Modification

作　　者：闫东海 刘建航 YAN Donghai;LIU Jianhang(National Energy Heze Power Generation Co.,Ltd.,Heze 274032,China)

机构地区：[1]国家能源菏泽发电有限公司,山东菏泽274032

出　　处：《国网技术学院学报》2020年第5期25-27,共3页Journal of State Grid Technology College

摘　　要：为降低NOx排放浓度,对某300 MW锅炉进行了低氮燃烧器改造。改造后锅炉燃烧稳定性能变差,飞灰含碳量增加,造成锅炉热效率下降。针对改造后锅炉燃烧存在的问题,采取优化燃烧系统运行方式、合理控制磨料位、加强燃烧调整和配风优化等措施,提高了锅炉燃烧稳定性和整体热效率,确保机组环保运行。In order to reduce NOx emission concentration,a low nitrogen burner was modified for a certain 300 MW boiler.After modification,the combustion stability of the boiler becomes worse,and the carbon content of fly ash increases,which results in the decrease of boiler’s thermal efficiency.In allusion to the problems existing in the boiler combustion after modification,measures are taken to improve the combustion stability and overall thermal efficiency of the boiler,such as optimizing the operation mode of the combustion system,reasonably controlling the coal level of mills,strengthening combustion adjustment and air distribution optimization,which ensure the environmental protection operation of the unit.

关 键 词：低氮燃烧 稳定性 燃烧调整 运行优化 

分 类 号：TM621.2[电气工程—电力系统及自动化]