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对固定床反应器中丙酮加氢放热反应进行了二维数值模拟,研究了催化剂颗粒布置方式对丙酮加氢反应、流动及传热特性的影响。结果显示,催化剂颗粒布置方式的变化能够改变反应器内流场、温度场和浓度场的分布;当催化剂颗粒轴线与反应器轴线的夹角θ=0°时反应器内异丙醇的质量分数最大,且随着夹角的增大异丙醇质量分数的最大值逐渐减小;反应器内温度最大值出现在夹角θ=0°,而最小值则出现在θ=60°。通过催化剂颗粒布置角度的变化,增大流场的扰动可以提高反应器壁面温度,从而提高反应器性能。
The two-dimensional numerical simulation of acetone hydrogenation reaction in fixed bed reactor was carried out. The effects of catalyst particle arrangement on the hydrogenation reaction, flow and heat transfer characteristics of acetone were studied. The results show that the change of catalyst particle arrangement can change the distribution of flow field, temperature field and concentration field in the reactor. When the angle θ = 0 ° between the axis of the catalyst particle and the reactor axis, the mass fraction of isopropanol in the reactor The maximum value of isopropanol mass fraction decreases with the increase of the included angle. The maximum temperature in the reactor appears at the angle θ = 0 ° and the minimum value at θ = 60 °. By changing the angle of the catalyst particle arrangement, increasing the disturbance of the flow field can increase the reactor wall temperature and thus improve the reactor performance.