基于数学模型的焦化炉炉壁结构参数设计

Structure Parameter Designation for Coking Furnace Wall Based on Mathematical Model

根据现场温度测试结果,现有焦化炉炉壁最外层平均温度为40.42℃,造成热量的大量损失,不能满足工程需要。基于传热学理论和迦辽金(Galerkin)法建立了炉壁数学模型,得到现有炉壁各分界面处温度值。结果表明数学模型理论结果与实验结果吻合,表明该炉壁数学模型是准确的。根据工程实际需要,在保证最外层钢板温度小于30℃的前提下,利用数学模型可以直接计算得到在炉壁总厚度一定时炉壁的结构参数。

Based on the experimental results of temperature field, the outermost average temperature of coking furnace wall is 40.42℃, which results in a great loss of heat and not meeting project needs. According to the heat transfer principle and Galerkin method, the mathematical model of the furnace wall was established. Then tempera- ture values at an interface were obtained without optimization. Comparing with the experimental results, the theoret- ical values from mathematical model are in a good agreement with the experimental. It shows that the mathematical model is reliable. When the total thickness of the furnace wall is constant, in order to obtain the outermost temperature less than 30 ℃, the most reasonable structure parameters of coking furnace wall are received on the basis of the mathematical model in the engineering requirements.