基于壁温分布的侧煤仓锅炉燃烧偏斜调整研究  

Research on Combustion Deviation Adjustment for Boilers with Side Coal Bunker Based on Wall Temperature Distribution

作　　者：谭佳宇 苏攀 方涛 周晓鸣 葛伟 TAN Jiayu;SU Pan;FANG Tao;ZHOU Xiaoming;GE Wei(Hunan Huadian Pingjiang Power Generation Co.,Ltd.,Yueyang 410400,China;Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310030,China)

机构地区：[1]湖南华电平江发电有限公司,湖南岳阳410400 [2]华电电力科学研究院有限公司,浙江杭州310030

出　　处：《湖南电力》2025年第2期36-44,共9页Hunan Electric Power

基　　金：国家重点研发计划资助项目(2023YFB4102705)。

摘　　要：针对侧煤仓对冲锅炉出现的燃烧偏斜现象,开展煤粉制、输均匀分配的试验研究,测量分析一次风量、粉量、汽温及壁温数据,与粉管阻力理论计算数据相印证,得出偏烧主要原因为煤粉分配不均的结论。利用各受热面壁温分布的可视化图形,通过优化煤粉分配器开度、燃尽风分区控制壁温等方法进行燃烧调整试验。试验结果表明,煤粉分配直接影响锅炉左右侧壁温分布,进而造成汽温偏差,调整煤粉分配器对缓解燃烧偏斜效果明显。经过调整,锅炉壁温分布较均匀,汽温偏差值达到设计值,燃烧偏斜问题得到大幅改善。In response to the phenomenon of combustion deviation in opposing-fired boilers equipped with side coal bunkers,experimental studies on the uniform distribution of pulverized coal production and transmission are conducted.Measurements and analyses of primary air volume,pulverized coal flow rate,steam temperature,and wall temperature are carried out,and these findings are cross-validated with theoretical calculations of pulverized coal pipeline resistance.The results identify the uneven distribution of pulverized coal as the primary cause of combustion deviation.Through optimization of pulverized coal distributor opening and the zoning control of over-fire air to regulate wall temperatures,feedback from the visualized wall temperature distribution of heat-absorbing surfaces is used to guide combustion adjustment.The test results show that the distribution of pulverized coal directly affects the temperature distribution on the boiler's side walls,subsequently causing steam temperature deviations.Adjustments to the pulverized coal distributors demonstrate a significant effect in mitigating combustion deviation.After the adjustments,the boiler wall temperature distribution become more uniform,the steam temperature deviation reaches the design specification,and the issue of combustion deviation is significantly improved.

关 键 词：燃烧偏斜 壁温分布 煤粉分配不均 侧煤仓 煤粉分配器 

分 类 号：TK229[动力工程及工程热物理—动力机械及工程]