不同工况下铸铁冷却壁热负荷分析

Heat Load Analysis for Cast Iron Stave in Different Conditions

采用有限元软件ANSYS建立高炉冷却壁稳态传热模型,利用ANSYS单元生死技术模拟冷却壁表面渣皮熔化行为,以计算铸铁冷却壁在渣皮稳定、渣皮脱落、冷却壁烧损和冷却壁烧毁4种工况下的温度分布和热负荷。分析结果表明,冷却壁热负荷随着炉气温度的升高而增加,提高冷却水速度和壁体烧损变薄对热负荷的影响较小。渣皮脱落和冷却壁完全消失造成热负荷急剧增加。

The steady-state heat transfer model was established by finite element software ANSYS, and based on the element birth and death technology, the melting of slag skull on the Surface of stave was simulated. The temperature distribution and heat load of iron cast stave were analyzed in the different conditions of stave, including with fixed and removed slag skull, destroyed and disappeared stave. The results showed that heat load of stave was increased with increasing gas temperature. Increasing cooling water rate and decreasing stave wall thickness had small effect. The heat load was dramatically increased when the slag skull was removed and the stave was disappeared.