改进型HT-NR3旋流燃烧器冷态模化试验研究  

Cold-state Modeling of Modified HT-NR3 Swirl Burners

作　　者：李月华[1,2] 林正春[1,2] 范卫东[1] 陈雄燕 王芳 

机构地区：[1]上海交通大学热能工程研究所,上海200240 [2]东方日立锅炉有限公司,浙江嘉兴314001

出　　处：《发电设备》2009年第2期73-76,共4页Power Equipment

摘　　要：以国内某锅炉厂制造的HT-NR3低NOx燃烧器为基础,提出了一种改进型的燃烧器。改进型燃烧器和原燃烧器在回流区、扩展角、射流形状等方面的流场特性基本相同,但煤粉浓度分布和防磨特性更好,一次风阻力较小。采用适当的结构可以使改进型燃烧器成为一种外浓内淡型燃烧器,具有更低的NOx排放特性。Based on the low NOx HT-NR3 burner manufactured by a certain domestic boiler works, a modified burner is being presented, which has basically the same back-flow area, spread angle and jet shape as the original one, but has better power concentration distribution, erosion resistance and less primary air resistance. By adopting appropriate structure, the modified burner will have such functions of dense powder concentration outside and dilute powder concentration inside, and therefore release much less NOx.

关 键 词：锅炉 煤粉燃烧 旋流燃烧器 低NOX排放 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]