柱流多旋顶燃式热风炉燃烧过程数值仿真  

Numerical Simulation of Combustion Process of Column Flow Multi-Rotary Top Burning Hot Blast Stove

作　　者：彭集棚 张勇 程树森[1] 刘世聚 刘力铭 刘力源 PENG Jipeng;ZHANG Yong;CHENG Shusen;LIU Shiju;LIU Liming;LIU Liyuan(College of Metllurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;Henan Yuxing Hot Blast Stove Engineering Technology Co.,Ltd.,Zhengzhou 450008,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]河南省豫兴热风炉工程技术有限公司,河南郑州450008

出　　处：《工业炉》2024年第4期1-7,共7页Industrial Furnace

摘　　要：建立了柱流多旋顶燃式热风炉空煤气燃烧和NO_(x)排放的三维物理数学模型,对炉内燃烧速度场、温度场、浓度场及NO_(x)排放进行了仿真研究。结果表明:燃烧室出口截面速率分布均匀;通过设置不同倾斜角度的混合烧嘴,使得炉内O_(2)和CO混合充分,燃烧效果好,燃烧室出口截面的最高CO浓度为33.2×10^(-6),最高O_(2)浓度为19.4×10^(-6),最高NO_(x)浓度为14.8×10^(-6);火焰在混合烧嘴内形成,在扩张段区域消失,火焰长度较短;燃烧室出口截面温度分布均匀,最大温差为16 K。A three-dimensional physical and mathematical model was established for the combustion of air gas and NO_(x)emissions in a column flow multi rotation top burning hot blast stove.The velocity field,temperature field,concentration field,and NO_(x) emissions during the combustion process in the hot blast stove were simulated and studied.The results show that the velocity distribution is uniform at the exit section of combustion chamber.By setting the mixing burners with different tilt angles,the O_(2) and CO in the furnace are fully mixed,resulting in good combustion efficiency.The maximum CO concentration at the outlet section of the combustion chamber is 33.2×10^(-6),and the maximum O_(2) concentration is 8.6×10^(-6).The highest concentration of NO_(x)is 14.8×10^(-6).The flame is formed in the mixing burner and disappears in the expansion area,and the flame length is shorter.The temperature distribution at the outlet section of the combustion chamber is uniform,and the maximum temperature difference is 16 K.

关 键 词：顶燃式热风炉 流场 浓度场 温度场 数值仿真 

分 类 号：TF578[冶金工程—钢铁冶金]