电解铝阳极焙烧炉模型实验与数值模拟

Model experiment and numerical simulation of anode roasting furnace for aluminum electrolysis

为降低阳极焙烧炉实炉测试的成本与难度,搭建阳极焙烧炉模型试验平台,采用试验的方法获得了焙烧炉模型内阳极炭块与火道的温升曲线,试验结果表明沿炉体方向火道温度由高到低分布,同时阳极炭块的升温速率呈先提高后下降的趋势。采用CFD数值模拟的方法模拟了焙烧炉模型内的温度分布情况,并获得了四个温度监测点随时间变化的升温曲线。将实验模型与数值模拟结果进行对比,表明数值模拟的结果与实际升温过程基本相符,因此可将模型算法推广到实际应用中去。

To reduce the cost and difficulty of the anode roasting furnace test, experimental platform of roasting furnace model was built. And temperature rise curve of anode and flue in the furnace model were achieved through experiment. As is shown in the result, the temperature of flue is distributed from high to low along the furnace body, and at the same time the temperature rising speed rises at first and then drops. And CFD numerical simulation was used to simulate the temperature field inside the furnace, and the temperature rise curves of four monitoring points were obtained. The results of model experiment and numerical simulation were compared, which showed the result of numerical simulation is basically in accordance with the exact process of temperature rising. Therefore, the algorithm model can be applied in practice.