内铸钢管水冷炉喉钢砖温度场和应力场计算

Numerical Simulation for Temperature Field and Thermal Stress Field of Water-Cooling Throat Steel Brick With Casting Steel Tube

利用数值模拟的方法研究了边缘煤气流过分发展对炉喉钢砖的影响。建立了水冷式炉喉钢砖模型,计算了其在不同煤气温度下热面的温度分布和应力差异以及水管和内部耐材表面的最高温度和最大应力。结果发现,煤气温度从500℃升高至1 100℃,钢砖的热面最高温度上升约500℃,热面高温区域应力迅速增大,导致钢砖破损加剧,因此需借助布料等上部调节手段,控制边缘煤气流过分发展,防止形成边缘"管道",确保钢砖正常、稳定地工作。

The effect of excessively edge gas flow on steel brick was investigated by numerical simulation. The model of water-cooling throat steel brick was built, and the temperature field and thermal stress field of hot face at the different gas temperature were calculated, and also the highest temperature and thermal stress of hot face, pipe and internal refractories were analyzed. The results show that when gas temperature rises from 500 to 1 100 ℃, the highest temperature of hot face increases about 500 ℃, as well as thermal stress increases rapidly and the damage of steel brick was resulted in. Therefore, to control the growth of edge gas flow is necessary to avoid the formation of edge channeling and to make sure normal and stable working conditions of the steel brick works.