660 MW四墙切圆锅炉燃烧优化技术研究  

Research on Combustion Optimization Technology of a 660 MW Four-wall Tangentially Fired Boiler

作　　者：段宏波 程鸿 程智海 赵庆东 吴涛 朱尧 Duan Hongbo;Cheng Hong;Cheng Zhihai;Zhao Qingdong;Wu Tao;Zhu Yao(SPIC Jiangxi Electric Power Co.,Ltd.,Nanchang 330096,China;College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]国家电投集团江西电力有限公司,南昌330096 [2]上海电力大学能源与机械工程学院,上海200090

出　　处：《发电设备》2022年第4期282-286,共5页Power Equipment

摘　　要：某660 MW超超临界锅炉采用四墙切圆燃烧布置方式,运行过程中长期存在低负荷时水冷壁温度波动大,高负荷时后屏过热器超温频繁等问题。结合数值模拟分析和现场试验研究发现,燃烧器布置导致的燃烧器出力偏差、燃烧器区域热负荷特性复杂和配风方式不合理是造成燃烧偏差大,引起受热面超温问题的主要原因。提出结合精确配风技术、磨煤机一次风量控制优化和二次风挡板自动控制优化技术,以解决锅炉受热面超温问题。A 660 MW ultra-supercritical boiler adopts four-wall tangential combustion arrangement,which has long-term problems in the operation process,such as large temperature fluctuation of water cooling wall under low load,and frequent overtemperature of rear screen superheater under high load.Combined with numerical simulation analysis and field test research,it is found that the main reasons of large combustion deviation and heating surface overtemperature are the output deviation of burner caused by burner layout,complex heat load characteristics of burner area and unreasonable air distribution mode.A combination of precise air distribution technology,the control optimization of primary air volume of coal mill and the automatic control optimization technology of secondary air baffle is proposed to solve the problem of boiler heating surface overtemperature.

关 键 词：锅炉 四墙切圆燃烧 PM燃烧器 超温 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]