矩形空气喷口长宽比对高温空气燃烧NO_x排放的影响  

Effect of Length-Width Ratio of the Rectangular Air-Jet on NO-x Emission in HTAC

作　　者：朱尚龙[1] 陈丽[1] 朱彤[1] 吴家正[1] 

机构地区：[1]同济大学机械工程学院,上海200092

出　　处：《工业炉》2005年第6期4-8,共5页Industrial Furnace

基　　金：国家自然科学基金资助项目(50206014);上海高校优秀青年教师后备人选计划资助项目

摘　　要：高温空气燃烧技术中,在燃气喷口两侧布置矩形空气喷口,且矩形空气喷口的长轴指向燃气喷口,有利于在炉膛内形成低氧、低燃气浓度的高温燃烧环境。本文利用计算流体力学软件研究了矩形空气喷口长宽比在高温空气燃烧过程中对NOx排放的影响。研究结果表明,在本文所研究的炉膛结构条件下,矩形空气喷口长宽比为1.5、空气喷口与燃气喷口的间距为43 mm时,NOx排放能够得到有效的控制。In High Temperature Air Combustion （HTAC） technology, if rectangle air-jets are arranged at both sides of the gas-jet, and the rectangle air-jets＇ major axis directs the gas-jet, it is advantageous in the fommtion of a low density of oxygen and fuel condition in high temperature combustion. The effect of length-width ratio of the rectangular air-jet on the NOx in HTAC was studied by means of CFD software. The results show that NOx emission is the least when air-jet length-width ratio equals to 1.5, and the space of the air-jet and fuel-jet is 43 mm.

关 键 词：高温空气燃烧技术 数值模拟 氮氧化物排放量 矩形喷口 

分 类 号：TK16[动力工程及工程热物理—热能工程]