Abstract: By applying the technique of pulse thermal input, the axial heat transfer of a fixed -bed packed with vanadium catalyst was investigated under the conditions that the initial temperature ranged from room temperature to about 500℃, and Re=30~660. It was shown that the correlations for calculating ke,ax and hp presented by Wakao are still applicable to the cases studied here at an average bed temperature under 200℃ but the values of axial thermal conductivity at about 500℃ are higher than those predicted previously.

摘要： 利用热响应技术对装填S101型钒催化剂的固定床轴向传热特性进行了实验研究。实验范围是:床层初始温度从室温至约500℃,Re=30～660,大体上覆盖了工业反应器的操作条件。结果表明,在床层温度小于200℃的低温下,前人已提出的计算a_(ax)和Nu数的公式仍然适用,但在更高的温度下,轴向有效导热系数的数值比前人的预测要大。