烧结矿冷却过程正交模拟优化试验研究

来源期刊：钢铁2011年第7期

论文作者：张家元 张小辉 周孑民 戴传德 谢东江

文章页码：86 - 89

关键词：烧结矿； 数值模拟； 正交优化试验； 余热利用

Key words：sinter； numerical simulation； orthogonal optimum experiment； waste heat utilization

摘    要：烧结矿粒径、进口流量、料层高度、孔隙率和进口风温是影响烧结矿冷却过程中余热利用量的主要参数。通过对某钢铁厂360m²环冷机进行研究,针对烧结矿换热的特点建立了烧结矿换热过程求解的数学模型。以计算流体力学软件FLUENT6.3为平台,采用UDS和UDF构建多孔介质局部非热力学平衡的能量双方程模型,模拟烧结矿冷却过程;以提高环冷机的余热回收利用量为目标,通过正交试验的方法对影响烧结矿换热过程的5个参数进行了优化,得到了最佳运行参数组合。通过与现场测试的数据比较表明,计算结果与实际运行过程吻合较好。研究结果对烧结系统的余热利用提供了可靠的理论依据。

Abstract: The sinter size,mass flow of inlet,material height,porosity and inlet temperature are the main parameters in affecting the waste heat recovery efficiency.Through researching a 360m² sinter cooler in an iron and steel company and heat transfer characteristics in sinter cooling process,the mathematical models of heat transfer were established.Based on the FLUENT 6.3,the two-equation energy model of non-equilibrium thermodynamics in porous media was built up by user-defined-scalar and user-defined-function.The five parameters were optimized to improve the waste heat recovery efficiency of the sinter cooler,and the optimal combination of these parameters was approved by orthogonal experimental method.Comparing the test data and the model prediction,it is shown that the model prediction and the real operation are in good agreement,this study provides a reliable theoretical basis in waste heat recovery efficiency in sinter.