冷却比表面积对高炉炉缸铸铁冷却壁传热的影响研究  

Study of the Effect of the Ratio of Cooling Surface Area on the Heat Transfer of the Cast Iron Cooling Stave in Blast Furnace Hearth

作　　者：郭光胜[1] 张建良[1] 焦克新[1] 刘征建[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《铸造》2016年第6期542-548,共7页Foundry

基　　金：国家自然科学基金资助项目(No.51174023)

摘　　要：基于ANSYS软件,建立炉缸铸铁冷却壁三维传热模型,分析了冷却比表面积对冷却壁传热的影响。结果表明:冷却壁比表面积在0.5增加至1.1时对冷却壁传热影响较大,比表面积在1.1以上时对冷却壁传热影响较小;通过减小水管间距来增大冷却比表面积时,冷却比表面积对冷却壁宽度方向温度分布的均匀性影响较大,而对冷却壁高度方向温度分布的均匀性影响较小;通过改变水管直径来改变比表面积时,冷却比表面积对冷却壁温度分布的均匀性影响较小;炉缸冷却壁冷却比表面积即冷却结构对温度梯度的影响较大,冷却水量对温度梯度的影响较小。最后对几座典型高炉炉缸冷却壁的冷却比表面积进行对比分析,结合数值计算结果,建议将炉缸冷却壁冷却比表面积控制在1.1以上。The software ANSYS was used to build the three-dimensional heat transfer model of cast iron cooling stave in blast furnace （BF） hearth. The influence on heat transfer of the cooling stave with the ratio of cooling surface area changing was analyzed. The results show that, the ratio of cooling surface area has great influence on heat transfer of the cooling stave when it increased fxom 0.5 to 1.1, while the ratio of cooling surface area has little influence on heat transfer of the cooling stave when it more than 1.1. It has great influence on the temperature distribution uniformity in the width of cooling stave by reducing the pipe spacing to increase the ratio of cooling surface area, while it has little influence on the temperature distribution uniformity in the height of cooling stave. It has little influence on the temperature distribution uniformity in the width and height of cooling stave by increasing the pipe diameter to increase the ratio of cooling surface area. The ratio of cooling surface area as the cooling structure has great influence on the temperature gradient of hearth cooling stave, while the flow rate of cooling water has little influence on it. Finally, the ratio of cooling surface area of hearth cooling stave in several typical btast furnace were comparatively analyzed, combined with the numericat resutts, it is recommended that the ratio of cooling surface area of hearth cooling stave is more than 1.1.

关 键 词：高炉 炉缸 铸铁冷却壁 数值模拟 冷却比表面积 

分 类 号：TF573[冶金工程—钢铁冶金]