烧嘴结构对平焰燃烧火焰特性与NO生成特性的影响  

Effect of burner structure on flame features and NO formation characteristics in flat-flame combustion

作　　者：陈伟鹏[1,2] 何超[1] 赵增武 李保卫 武文斐[1,2] 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010 [2]白云鄂博矿稀土及铌资源高效利用省部共建重点实验室,内蒙古包头014010

出　　处：《热力发电》2014年第5期91-93,103,共4页Thermal Power Generation

基　　金：重大基础研究前期研究专项(2005CCA00600);国家自然科学基金(No.50464004);内蒙古自然科学基金(2011MS0707)

摘　　要：平焰燃烧火焰温度较高,燃烧过程中会产生大量的NO。检测不同烧嘴结构下平焰燃烧的火焰温度和NO浓度分布,分析了不同燃气管插入深度h下平展流火焰燃烧特性和NO生成特性。结果表明:减少h可以使燃烧区域扩大,从而降低火焰局部高温区温度,减少火焰面中NO浓度。High flame temperature in flat flame combustion will cause large amount of NO genera-tion.Thus,the flame temperature and NO concentration in flat combustion with different burner structures were detected by WRNK armored chromium-nickel thermocouple and KM9106 gas a-nalysis instrument.Moreover,the open and flat flow flame combustion characteristics and NO for-mation characteristics with different gas tube inserting depths h were analyzed.The results show that reducing the h can enlarge the combustion zone so as to decrease the flame temperature in lo-cal high temperature regions and reduce the NO concentration in flat flame.

关 键 词：烧嘴结构 平焰燃烧 火焰特性 NO生成特性 

分 类 号：TK16[动力工程及工程热物理—热能工程]