射流参数对高温空气燃烧影响的数值分析  

Numerical Simulation of the Effect of the Burner Parameters on the HTAC

作　　者：王连勇[1] 蔡九菊[1] 王超[1] 张劲松[2] 赵爱华[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]鞍钢股份有限公司,辽宁鞍山114000

出　　处：《工业加热》2011年第4期38-41,共4页Industrial Heating

基　　金：中央高校基本科研业务费资助项目(N090402010)

摘　　要：利用fluent流体软件对一种蓄热式烧嘴燃烧性能的影响因素进行了数值分析。研究发现,适当控制预燃室内一次空气的喷入量,可增大火焰体积和温度的分布数值,增强炉温分布的均匀性和降低NOx排放;对比一次空气和煤气单预热时温度场的变化发现,煤气单预热时,火焰长度长,温度高;当两者双预热时炉膛整体温度显著增大;比较煤气和一次空气不同预热方式下炉温的均匀性,双预热时最好,不预热时次之,单预热时最差。The fluent software was used to analysis the influencing factors of a regenerative burner＇ s combustion performance. It was found that, if control the volume of the primary-air injected into 1FRF properly, the flame volume and temperature distribution can be increased, and the fttmace temperature uniformity would be enhanced while NOx concentration was reduced; Comparing the temperature changes in the case of fuel ＆ primary-aft was preheated singly, it was found that when fuel was preheated singly, a long and high temperature flame would be got; When both of them were preheated the overall temperature distribution in furnace was increased significantly; Comparing furnace temperature uniformity in different preheating cases that the both-preheating model was the best, and the non-preheating model was the second, while the singly preheating model was the worst.

关 键 词：蓄热式烧嘴 预热方式 温度场 NOX排放 

分 类 号：TF066.1[冶金工程—冶金物理化学]