燃气比及入口流速对SJ低温干馏炉内燃烧特性的影响  

Influence of Gas Ratio and Inlet Velocity on Combustion Characteristics of SJ Low Temperature Dry Distillation Furnace

作　　者：高勇[1,2] 闫龙 范晓勇[1,2] 李健 王战辉[1,2] 常程 

机构地区：[1]榆林学院化学与化工学院,陕西榆林719000 [2]陕西省低变质煤洁净利用重点实验室,陕西榆林719000

出　　处：《工业炉》2018年第1期7-9,13,共4页Industrial Furnace

基　　金：国家自然科学基金资助项目(21663034);陕西省教育厅专项科研项目(17JK0901);陕西省教育厅重点实验室项目(17JS146)

摘　　要：采用计算流体动力学(CFD)方法对SJ低温干馏炉内燃烧过程进行数值模拟,通过控制不同的燃气比和入口流速来测量炉内温度场及压力场的分布规律。研究结果表明:固定入口速度时,随着燃气比的逐渐增大,炉腔内温度分布差异变大,炉底和炉顶高温区域逐渐增大。固定燃气比时,随着入口速度的逐渐增大;炉腔内温度分布差异变小,炉底和炉顶高温区域减少。在同一煤层高度上,随着燃气比和入口速度的增大压力降逐渐减小。当燃气比为0.6、入口速度为24m/s时,炉内干馏段温度分布最均匀,回炉煤气与空气燃烧充分。The combustion process of SJ low temperature dry distillation furnace was simulated by CFD, the temperature and pressure distribution of the furnace was measured by controlling the gas ratio and the inlet velocity. The results showed that, when the inlet velocity was fixed, the temperature distribution of the furnace cavity became larger with the increasing of the gas ratio, the high temperature area of the bottom and the top was increased. When the gas ratio was fixed, the temperature distribution difference in the furnace cavity became smaller with the increasing of the inlet velocity, the high temperature area of the bottom and the top was reduced. At the same coal seam height, the pressure drop decreased as the gas ratio and the inlet velocity increasing. When the gas ratio was 0.6 and the inlet velocity was 24 m/s, the temperature distribution was the most uniform of the dry distillation section in the furnace, the returned gas and air burned completely.

关 键 词：计算流体动力学 低温干馏炉 温度场 压力场 

分 类 号：TQ523[化学工程—煤化学工程]