摘要
针对某电厂330 MW四角切圆中间储仓式热风送粉锅炉NO_x生成浓度高的问题,分析了三次风对NO_x生成的影响,优化了燃烧系统关键部件,整体上采用一次风水平浓淡低氮燃烧器+三次风炉外分离+空气分级技术的改造方案,针对NO_x生成影响较大的三次风采用了炉外分离+垂直空间分级送入技术。实际运行表明,改造后锅炉NO_x生成量明显减少,锅炉燃烧、运行稳定,锅炉效率不降低。
Regarding the problem of high NOx concentrations in a 330 MW boiler with quadrangular circular firing and hot air coal-powder feeding, based on the analysis of the impacts of tertiary air on NOx generation, the key components of the combustion systemare optimized. To be more specific, the low level nitrogen burner with horizontal primary air separation, plus the tertiary air withexternal separation together with the in-depth air classification technologies are implemented in the entire retrofit scheme. Especiallyfor the tertiary air that may highly affect the NOx generation, the external separation and vertical space classification and deliverytechnologies are used. It is evident from the actual operation that after the retrofit, the NOx generation volume is reducedsignificantly, while the boiler combustion and operation still remain stable state without any side effect on the boiler efficiency.
作者
杜君文
申明
李升
DU Junwen;SHEN Ming;LI Sheng(Chang＇an Shimen Power Generation Co.,Ltd.,Changde 415300,China)
出处
《中国电力》
CSCD
北大核心
2018年第12期114-117,共4页
Electric Power
基金
国家重点研发计划基金资助项目(2017YFB0602004)~~
关键词
火电厂
锅炉
炉外分离
浓淡分离
垂直空间分级
热风送粉
高温腐蚀
thermal power plant
boiler
external separation
deep dense and dilute separation
vertical space classification
hot airpowder
high temperature corrosion
作者简介
杜君文（1981-）,男,硕士,工程师,从事火力发电厂热能动力工程和电力经济研究,E-mail：djw@cadlhz.com;;申明（1976-）,男,高级工程师,从事火力发电厂热工自动化专业研究,E-mail：13973757251@139.com;;李升（1968-）,男,工程师,从事火力发电厂热能动力工程和电气自动化专业研究,E-mail：ls@cadlhz.com.
