HG-670/13.7-WM15锅炉低氮燃烧器不同煤粉浓淡比脱硝效果和燃烧特性的数值模拟  

Numerical Simulation of the Effect of Different Pulverized Coal Bias Ratio on the Denitrification and Combustion Characteristics in Low NOxBurner of HG-670/13.7-WM15 Boiler

作　　者：卢洪波[1] 武帅[1] 刘畅[2] 

机构地区：[1]东北电力大学能源与动力工程学院,吉林吉林132012 [2]安徽华电芜湖发电有限公司,安徽芜湖241300

出　　处：《东北电力大学学报》2017年第1期47-52,共6页Journal of Northeast Electric Power University

基　　金：吉林省科技发展计划重点资助项目(20110409)

摘　　要：针对某电厂锅炉氮氧化物排放量超标的问题,利用前处理软件Gambit建立炉膛模型,设置相应的边界条件,利用Fluent软件对炉内NO_x生成进行了数值计算,研究了煤粉浓淡比对脱硝效果和燃烧特性的影响。结果表明:随着煤粉浓淡比的增大,NO_x排放浓度逐渐降低,并且趋于平缓,而飞灰含碳量则随着煤粉浓淡比的增大呈线性增大,建议合理的煤粉浓淡比为6。Aiming at the problem of nitrogen oxide emissions exceeding the standard in a power plant, the model of the furnace was built by using the software Gambit, and the corresponding boundary conditions were set up. The NOx generation in the furnace were calculated by using software Fluent. The effect of pulverized coal bias ratio on the denitrification and combustion characteristics was studied. The results show that,with the increase of the pulverized coal bias ratio, NOx emission concentration decreases gradually, and tends to be gentle, but the carbon content of fly ash increases linearly, The authors suggest that the reasonable pulverized coal bias ratio is 6.

关 键 词：氮氧化物 低氮燃烧器 煤粉浓淡比 飞灰含碳量 

分 类 号：TK224.1[动力工程及工程热物理—动力机械及工程]