一新建660 MW超临界四角切圆锅炉燃烧调整试验研究
姚力，任兵，武生
（国电科学技术研究院有限公司，江苏 南京 210031）
摘要： 对一新建660 MW 超临界且燃用低热值煤的四角切圆锅炉进行了燃烧优化调整，分别进行了制粉系统优化试验
和锅炉燃烧调整试验。结果表明：机组存在一次风率偏大问题，通过对磨煤机入口风量的标定和运行方式的调整，可以
有效降低制粉单耗，且降低排烟温度，提高锅炉效率；通过调整燃尽风水平摆角，配合燃尽风风量调整，能够有效解决
屏式过热器结构性的壁温超温问题；机组采用倒宝塔配风方式会导致NOx生成量增大，且炉膛出口烟气温度升高，而采
用均等配风方式锅炉效率最高。
关键词： 超临界锅炉；低热值煤；四角切圆燃烧；燃烧调整；超温
中图分类号： TK223.3     文献标志码： A     文章编号： 2095-0802-(2020)11-0139-03
Experimental Study on Combustion Adjustment of a Newly Built 660 MW Supercritical
Tangentially Fired Boiler
YAO Li, REN Bing, WU Sheng
(Guodian Science and Technology Research Institute Co., Ltd., Nanjing 210031, Jiangsu, China)
Abstract: The combustion optimization of a newly built 660 MW supercritical tangentially fired boiler with low calorific value
coal was carried out. The coal pulverizing system optimization test and the boiler combustion adjustment test were carried out
respectively. The results show that the primary air ratio of the unit is too large, and by calibrating the inlet air volume of coal
pulverizer and adjusting the operation mode in time, the unit consumption of coal pulverizing, the exhaust temperature and the
boiler efficiency can be effectively reduced; by adjusting the horizontal swing angle of the exhaust air and the amount of the
exhaust air, the over-temperature problem of the structural wall temperature of the panel superheater can be effectively solved; the
use of inverted tower air distribution will lead to an increase in nitrogen oxide generation and a rise in furnace outlet temperature,
while the boiler using the equal air distribution has the highest efficiency.

 Key words: supercritical boiler; low calorific value coal; tangentially fired; combustion adjustment; overtemperature