旋风燃烧锅炉炉内流动及燃烧特性的数值模拟研究  

Numerical Simulation on Flow and Combustion Characteristics of Cyclone-Fired Boiler

作　　者：罗俊伟 杨文海 朱文兵 胡乐毅 唐春丽[2] 车得福[2] LUO Junwei;YANG Wenhai;ZHU Wenbing;HU Yueyi;TANG Chunli;CHE Defu(Wuhan Boiler Energy Engineering Co.,Ltd.,Whan 430223,China;State key Laboratory of Multiphase Flow in Power Engineering,Xi’an Jiaotong University,Xi'an 710049,China)

机构地区：[1]武汉武锅能源工程有限公司,湖北武汉430223 [2]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《锅炉技术》2022年第4期44-51,共8页Boiler Technology

摘　　要：对一台旋风燃烧锅炉进行了数值模拟,研究了旋风筒中一次风旋流叶片倾角和二次风风速对旋风筒捕渣率的影响,以及炉膛中燃尽风风速、位置对主炉膛流场和温度场的影响。数值模拟结果表明:旋风筒二次风速的提高和一次风旋流叶片倾角的减小,有利于提高捕渣率;随着燃尽风风速的增加,炉膛顶部过热器冲刷效果减弱;两层燃尽风布置选择第1、3层时主炉膛内流场及温度场最佳。A numerical simulation is conducted on a cyclone-fired boiler.The effects of the swirling vane angle of primary air and the velocity of secondary air on the slag capture ratio of cyclone barrel and the effects of the velocity and position of OFA on the flow and temperature distributions of the main furnace are investigated.The results show that the increase in the velocity of secondary air and the decrease in the swirling vane angle of primary air can increase the slag capture ratio,and the increase in the velocity of OFA can weaken the flow sweeping to the superheater.The optimal flow and temperature distributions in the main furnace can be obtained when the first and third layers of OFA nozzles are selected.

关 键 词：旋风燃烧锅炉 数值模拟 流场 温度场 

分 类 号：TK224[动力工程及工程热物理—动力机械及工程]