四角切圆锅炉不同燃烧器布置角度结渣特性数值模拟研究  

Numerical Simulation of Slagging Characteristics of Tangential Boiler with Different Burner Arrangement Angles

作　　者：李朝兵 赖金平 王西伦 LI Chao-bing;LAI Jin-ping;WANG Xi-lun(Guoneng Nanjing Electric Power Test and Research Co.,Ltd.,Nanjing 210023,China;Longyuan Power Technology Co.,Ltd.,Yantai 264000,China)

机构地区：[1]国能南京电力试验研究有限公司,江苏南京210023 [2]烟台龙源电力技术股份有限公司,山东烟台264000

出　　处：《节能技术》2024年第3期253-258,共6页Energy Conservation Technology

摘　　要：为研究燃烧器布置角度对大规模掺烧低灰熔点烟煤锅炉的燃烧特性和结渣倾向,采用CFD方法对一300 MW四角切圆燃煤锅炉进行研究。结果表明,当燃烧器布置角度为38°时,温度分布均匀,火焰充满度高,燃烧稳定,但炉膛壁面易出现结渣;当燃烧器布置角度为42°时,高温火焰集中在炉膛中心,壁面温度降低,结渣倾向较小,但煤粉难以充分燃烧。综合考虑,当燃烧器布置角度为40°时,具有良好的燃烧效果,且结渣风险较低,可实现锅炉稳定运行。In order to study the combustion characteristics and slagging tendency of a large scale mixed bituminous coal boiler with low ash melting point,a 300 MW quadrangular tangential coal boiler was studied by CFD method.The results show that when the Angle of the burner is 38°,the temperature distribution is uniform,the flame filling degree is high,and the combustion is stable,but slag formation is easy on the furnace wall.When the Angle of the burner is 42°,the high temperature flame is concentrated in the center of the furnace,the wall temperature is reduced,the slagging tendency is small,but the pulverized coal is difficult to burn fully.Overall consideration,when the Angle of the burner is 40°,the combustion effect is good,and the risk of slagging is low,and the stable operation of the boiler can be realized.

关 键 词：结渣特性 电站锅炉 燃烧 燃烧器布置角度 数值模拟 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]