旋流对冲燃烧锅炉燃料氮生成NO_x的试验研究  

EXPERIMENTAL STUDY ON CONVERSION RATE OF FUEL-NITROGEN TO NOx FOR SWIRL-OPPOSED FIRING BOILER

作　　者：郑立国[1] 魏刚[1] 张万德[1] 

机构地区：[1]河北省电力研究院,河北石家庄050021

出　　处：《热力发电》2012年第9期29-31,共3页Thermal Power Generation

摘　　要：在不同负荷下对某电厂300MW机组旋流对冲燃烧锅炉空气预热器出口NOx排放浓度、烟气成分、排烟温度等进行了测试,计算了燃料氮生成燃料型NOx的转化率,并对其与运行氧量、锅炉负荷、锅炉效率之间的关系进行了分析。结果表明,旋流对冲燃烧锅炉燃料氮生成NOx的转化率在20%～30%之间;炉膛温度较运行氧量对燃料氮生成NOx的转化率影响较大。To stuy the source of NOx discharged by coal fired power plant,an experimental study on a 300 MW subcritical swirl-opposed firing boiler was carried out.NOx emission at outlet of the air preheater,flue gas components and exhaust gas temperature were measured under different unit loads.Conversion rate of fuel-nitrogen to fuel-NOx was calculated based on the fuel-NOx formation mechanism,furthermore,its relationship with indexes such as oxygen concentration,boiler load and efficiency was analyzed.Results show that,the conversion rate of fuel-nitrogen to NOx of the swirl-opposed boiler is between 20% and 30%.Compared to the oxygen concentration,furnace temperature has stronger influence on the fuel-nitrogen transformation.

关 键 词：锅炉 旋流对冲燃烧 锅炉效率 运行氧量 燃料型NOx 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]