330MW机组锅炉低氮燃烧改造及效果分析  

Low NO_x combustion retrofit of boilerand its effect analysis for 330 MW power unit

作　　者：樊爱兵[1] 

机构地区：[1]江苏华电扬州发电有限公司,江苏扬州225007

出　　处：《华电技术》2016年第1期59-61,78,共3页HUADIAN TECHNOLOGY

摘　　要：某电厂~#6机组空气预热器出口NO)x排放质量浓度达655.7 mg/m^3,为满足新标准排放要求,采用多空气分级、水平浓淡分离的煤粉燃烧技术对锅炉燃烧器进行了低氮燃烧改造,在炉膛内沿垂直方向和水平方向进行多次空气分级。改造后的锅炉性能试验表明,空气预热器出口NO_x排放质量浓度可长期保持在300 mg/m^3以下,锅炉效率、飞灰中可燃物含量符合要求,改造效果显著。The NOxemission concentration of an air preheater is up to 655. 7 mg / m3 for the No. 6 unit of a certain power plant. In order to meet the emission requirement of new standard,a low NOxcombustion retrofit of boiler burners conducted using a multi air stereo-staged and horizontal bias coal combustion technology,which carries out a multi air stereo-staged combustion along the vertical direction and horizontal direction in the chamber of a stove. The performance test of the retrofitted boiler shows that the retrofit effect is significant with the NOxemission concentration of an air preheater could be kept below 300 mg / m3 for a long time,and the boiler efficiency and combustible matter content in flue dust are also meeting the requirements.

关 键 词：燃烧器 低氮燃烧 NOx 空气分级 水平浓淡分离 

分 类 号：X701[环境科学与工程—环境工程]