褐煤锅炉风煤比对炉内燃烧特性影响的数值模拟研究  

Numerical simulation study on influence of primary air rate on combustion characteristics in lignite boiler

作　　者：朱绘娟 王静杰[1] 沈涛[1] 韩升利 ZHU Hui-juan;WANG Jing-jie;SHEN Tao;HAN Sheng-li(State Key Laboratory of Efficient and Clean Coal-fired Utility Boilers(Harbin Boiler Company Limited),Harbin 150046,China)

机构地区：[1]高效清洁燃煤电站锅炉国家重点实验室(哈尔滨锅炉厂有限责任公司),黑龙江哈尔滨150046

出　　处：《锅炉制造》2022年第6期4-5,12,共3页Boiler Manufacturing

摘　　要：锅炉实际运行中一次风率往往与设计值存在偏差,本文研究了一次风率分别为21%、28%、35%时对锅炉燃烧性能的影响,结果显示随着一次风率的增加,煤粉燃尽所需的高度增加;省煤器出口NO浓度随着一次风率的增大而增加,为此针对直流四角切圆锅炉燃用烟煤锅炉一次风率选择21%是较合理的。The primary rate value is always difference between actual operation and design.For this reason, the paper studies the effect of primary air rate on the boiler performance when it is 21%、28%、35%.The results show that with the increase of primary air rate, the pulverized coal combustion is delayed and NOat the outlet of the econonmizer increased.It is reasonable to choose 21% primary air rate for the boiler burning bituminous coal.

关 键 词：一次风率 数值模拟 煤粉燃烧 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]