1000 MW旋流对冲燃烧锅炉NO_x排放特性试验研究  

Experimental Study on NO_x Emission Characteristics of a 1000 MW Opposed Firing Boiler

作　　者：茅建波 张明 熊建国 张晓龙 MAO Jianbo;ZHANG Ming;XIONG Jianguo;ZHANG Xiaolong(Electric Power Research Institute,State Grid Zhejiang Electric Power Co.,Ltd.,Hangzhou 310014,China)

机构地区：[1]国网浙江省电力有限公司电力科学研究院,杭州310014

出　　处：《动力工程学报》2019年第3期169-174,190,共7页Journal of Chinese Society of Power Engineering

摘　　要：为了解采用OPCC旋流燃烧器、2层燃尽风布置的某1 000 MW超超临界前后墙对冲燃烧锅炉的NO_x排放特性,采用现场试验的方法对该锅炉进行了系统研究,得到燃烧器投运方式、炉膛氧体积分数、燃尽风挡板开度、燃烧器外二次风叶片角度、燃烧器内二次风挡板开度、燃烧器中心风挡板开度和燃尽风喷口外二次风刻度位置、燃烧器负荷分配方式、机组负荷及煤种等因素对NO_x质量浓度的影响。结果表明:燃烧器投运方式、炉膛氧体积分数及煤种对NO_x质量浓度的影响较大,影响幅度可达13%～20.2%;燃尽风挡板开度、燃烧器内二次风挡板开度、燃烧器负荷分配方式和机组负荷对NO_x质量浓度的影响较小,影响幅度为4%～6%;燃烧器外二次风叶片角度、燃尽风喷口外二次风刻度位置和燃烧器中心风挡板开度对NO_x质量浓度的影响微弱。To find the NOx emission characteristics of a 1 000 MW opposed firing boiler with OPCC swirl burners and 2 rows of overfire air(OFA)nozzles,field tests were conducted to study the effects of following factors on the NOx emission behavior,such as the operation mode of burners,oxygen concentration in furnace,damper opening of OFA air,vane angle of outer secondary air,damper opening of inner secondary air,damper opening of central air,outer secondary air flow of OFA nozzle,load distribution of burners,unit load and coal category etc.Results show that the influence coefficients of burner operation mode,oxygen concentration and coal category on the NOx emission are relatively high,which lie in 13%-20.2%;followed by the damper opening of OFA air,damper opening of inner secondary air,load distribution of burners,as well as the unit load,with influence coefficients in 4%-6%.The NOx emission is slightly influenced by the vane angle of outer secondary air,outer secondary air flow of OFA nozzles and the damper opening of central air.

关 键 词：超超临界机组 对冲燃烧锅炉 NOX排放特性 OPCC旋流燃烧器 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]