传热边界逆解在高炉炉缸侵蚀诊断中的应用  

Application of Inverse Solution to Boundary of Heat Transfer in Erosion Diagnosis of Blast Furnace Hearth

作　　者：陈良玉[1] 李玉[1] 王子金[2] 张明[2] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110004 [2]莱芜钢铁集团有限公司,山东莱芜271104

出　　处：《东北大学学报（自然科学版）》2009年第8期1135-1138,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(50474014);辽宁省科学技术计划项目(2008216005)

摘　　要：根据复杂结构传热问题中的待定边界逆解原理,针对高炉炉缸测温点较少或无测温点的情况,按照轴对称稳态传热方程,以实测温度和冷却壁热流量为侵蚀边界核定条件,构造了一种正解计算—核定—修改边界—再正解计算核定的逐次逼近的炉缸内衬侵蚀边界数值计算方法.该方法用最危险原则判断同一轴截面内衬侵蚀形貌的不惟一性和不适定性,其诊断结果与后期高炉大修破损调查结果一致.这种方法可应用于同类高炉的炉缸内衬侵蚀诊断.Based on the principle of the inverse solution to the undetermined boundary in complex heat transfer problem, a numerically stepwise approximation method was formed to calculate the erosion boundary values of the lining for blast furnace hearth via the procedure of regular solution -approval- boundary modification- secondary regular solution/approval. The method was formed in case there are only few even no temperature measuring points in blast furnace hearth and under the approved conditions that the measured temperature and heat flux in cooling stave are taken as erosion boundary values according to the axisymmetric steady-state heat transfer equation. On the principle of maximum risk, the method judges the non-uniqueness and ill-posed condition of the erosion profiles of axial lining sections so as to diagnose the blast furnace hearth and bottom. The diagnosis result was regarded as consistent with the overhaul results. The method proposed can be applied to erosion diagnosis of congeneric blast furnace hearth.

关 键 词：高炉 炉缸内衬 侵蚀诊断 传热 逆解 

分 类 号：TF06[冶金工程—冶金物理化学]