摘要
通过有限元软件ANSYS建立高炉冷却壁三维传热模型,利用单元生死技术创立渣皮熔化迭代方法,分析稳态下工艺参数对渣皮厚度的影响。分析结果表明:高炉内炉气温度对渣皮厚度的影响最显著,而冷却水水速影响很小;降低冷却壁气隙宽度可以有效改善高温炉气下的挂渣情况;冷却壁上的渣皮厚度与冷却壁热电偶测定点温度及热负荷之间存在明显的对应关系。采用熔化迭代方法建立的数学模型优化了冷却壁传热分析,能够直接计算不同条件下高炉冷却壁上渣皮厚度。
Three dimensional heat transfer model is presented by finite element software ANSYS. Based on element birth and death technology, an iterative routine for slag skull melting is established to determine effect of process condition on slag skull thickness in steady state. The result shows that BF gas temperature has an obvious influence on slag skull thickness. And cooling water velocity has less effect on it. In higher gas temperature condition, the slag skull thickness is remarkably increased by decreasing the gap width. The slag skull thickness is related obviously to the measured temperature and heat load of cooling stave. The heat transfer analysis is optimized by the iterative routine for slag skull melting in this model. The slag skull thickness on BF cooling stave can be calculated by the established model in different conditions.
出处
《钢铁钒钛》
CAS
2008年第3期51-54,共4页
Iron Steel Vanadium Titanium
关键词
高炉
渣皮
传热分析
冷却壁
热负荷
blast furnace
slag skull
heat transfer analysis
cooling stave
heat load
