高炉炉缸炉底温度场及异常侵蚀在线监测诊断系统

来源期刊：钢铁2010年第5期

论文作者：赵宏博 程树森 霍守锋

文章页码：11 - 16

关键词：炉缸炉底； 异常侵蚀； 凝固潜热； 在线监测

Key words：hearth and bottom； abnormal erosion； solidification latent heat； on-line monitoring

摘    要：分析了高炉炉缸炉底常用侵蚀监测方法的不足:一维传热、不含凝固潜热、不考虑异常情况对侵蚀影响的模型很难准确预测炉缸侧壁"象脚状"侵蚀的发生。建立了包含凝固潜热的三维非稳态柱坐标温度场计算模型,引入了"诊断知识库"实时判断和处理异常情况对侵蚀的影响,开发了炉缸炉底温度场及异常侵蚀在线监测诊断系统,成功应用于首钢、迁钢、唐钢、攀钢、长钢等多座高炉。介绍了该系统的侵蚀计算流程、程序设计特点、具体模块功能和在高炉生产中的指导作用。模型计算结果的准确性在高炉大修破损调研时得到了充分的验证。

Abstract: Disadvantages of common methods for erosion monitoring of BF hearth and bottom were analyzed,that "elephant foot shaped" erosion was hard to be accurately diagnosed by 1-D heat transfer model,without solidification latent heat,or not considering the effects of abnormal conditions on erosion.The 3-D unsteady cylindrical mathematical model for temperature calculating was built with latent heat of hot metal."Diagnosing knowledge base" was brought in to judge and solve the effects of abnormal conditions on erosion.Then the on-line monitoring system for temperature field and abnormal erosion of BF hearth and bottom was developed,which was successfully used in BFs of several factories,such as Shougang Steel,Qiangang Steel,Tanggang Steel,Pangang Steel,Changang Steel and so on.Erosion calculating process,program designing features,detailed functional modules and guiding effects of the system on BF operation were introduced.Calculating results of the model show great correlations with BF’s dissection results.