烟气自循环加热炉内预热空气温度对燃烧过程的影响  

Influence of Preheated Air Temperature on Combustion Process in Flue Gas Self-Circulation Furnace

作　　者：吴晋湘[1] 杜荣[1] 苟湘[1] 

机构地区：[1]河北工业大学能源与环境工程学院,天津300401

出　　处：《工业炉》2012年第1期1-5,共5页Industrial Furnace

基　　金：天津市应用基础及前沿技术研究计划资助项目(08JCZDJC22800)

摘　　要：高温空气燃烧技术中预热空气温度对炉膛内的燃烧特性及火焰特性有重要的影响。就不同预热空气温度对烟气自循环加热炉的影响进行了模拟研究。结果发现:预热空气温度一般加热到900～1 100 K为最佳。NOx浓度随着预热空气温度的升高而增大,一旦预热空气温度超过1 500 K,NOx的生成量将急剧升高。The preheated air temperature in the high tern perature air combustion technology had important implications on the combustion characteristic and flame characteristic in furnace hearth. The influences of different air preheating temperatures on the flue gas self-circulation furnace were studied by numerical simulation. The results showed that the preheated air temperature commonly heating to 900~1 100 K was the best. The NOx concentration increased while the preheated air temperature raised, and once the preheated air temperature exceeded 1 500 K, the NOv production capacity would increase radically.

关 键 词：烟气自循环 氮氧化物 数值模拟 

分 类 号：TK175[动力工程及工程热物理—热能工程]