切圆煤粉锅炉墙式燃尽风技术的研究与应用  

Research and Application of Wall Arrangement OFA Technology in Tangentially-fired Boilers

作　　者：孔红兵 杨章宁 谢佳 但家瑜 张山鹰 何维 刘泰生 

机构地区：[1]清洁燃烧与烟气净化四川省重点实验室,成都611731 [2]东方电气集团东方锅炉股份有限公司,四川自贡643001

出　　处：《动力工程学报》2017年第12期950-955,共6页Journal of Chinese Society of Power Engineering

摘　　要：在某电厂330 MW四角切圆煤粉锅炉上应用墙式燃尽风技术,研究了该技术对NO_x和CO体积分数以及锅炉效率、汽温偏差的影响,并将通过改进模型所得的NO_x质量浓度计算值与实际值进行对比.结果表明:采用墙式燃尽风技术,通过合理配风,锅炉NO_x和CO等未燃尽可燃物体积分数均比常规角式燃尽风工况下低,在降低NO_x质量浓度的同时锅炉效率不变,并且在解决锅炉两侧汽温偏差方面具有良好的效果.A wall arrangement over fire air（OFA）technology developed by DBC was applied in a 330 MW tangentially-fired pulverized coal boiler.Based on the comparison between actual operation data and the results calculated with an improved model,the effects of wall arrangement OFA technology on following parameters were studied,such as the NOxemission,CO emission,boiler efficiency and the steam temperature deviation,etc.Results show that through reasonable air distribution,the NOxemission,CO emission and the concentration of other unburned fuel particles with OFA in wall arrangement are lower than that of conventional corner arrangement,while the boiler efficiency is kept unchanged,which has also good effects in eliminating the temperature deviation on both sides of the boiler.

关 键 词：煤粉锅炉 空气分级 墙式燃尽风 NOx 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]