推钢式板坯加热炉炉衬损耗的数值模拟  

Numerical Simulation of lining loss in the steel slab pusher-type furnace

作　　者：潘丽萍[1] 李宝宽[1] 贺铸[1] 

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,湖北武汉430081

出　　处：《钢铁研究》2015年第4期42-46,共5页Research on Iron and Steel

基　　金：国家科技支撑计划资助项目(2011BAK06B02)

摘　　要：依据某钢厂使用的推钢式板坯加热炉模型,采用ANSYS CFD软件对其炉内高温气体的流动状态进行分析,得到速度场、温度场、壁面剪切应力等相关分布。通过分布规律分析加热炉炉衬损耗的主要位置和影响因素,指导炉衬耐火材料的选择。结果表明,均热段煤气入口右侧、加热段上端空气入口左侧的回流区会对炉衬表面产生气体冲刷,影响其寿命。在加热段炉顶上方出现高温区,会对炉衬耐火砖产生热应力。建议炉壁剪切应力较大值的地方应选择能抗剪切应力的优良材质砌筑,应尽量避免在Z方向靠近炉壁处设置喷嘴。The software of ANSYS CFD was used to analyze the gas flow in furnace under high temperature based on the model of the pusher-type furnace for s!abs in a steel plant. The velocity field, temperature field and the wall shear stress field were calculated in the analyses. The main positions and affecting factors of lining loss could be figured out through the rule of these distributions, and the selection of lining refractory materials could also be guided. The results showed that, the life of lining could be affected by the gas erosion, which was generated from the recirculation area at the right side of gas entrance in soaking zone and the left side of air entrance in the upper section of heating zone. The high temperature was appeared at the top of the roof area, which could lead to heat stress in firebrick lining. It was proposed that the fine masonry materials should be used at the position of the high shear stress, and the nozzles should be avoided to set in Z direction near the furnace wall.

关 键 词：炉衬损耗 加热炉 烧蚀 剪切应力 数值模拟 

分 类 号：TF701.3[冶金工程—钢铁冶金]