催化剂颗粒布置方式对丙酮加氢反应的影响  

Effect of Packing Model of Catalyst Particle on Acetone Hydrogenation Reaction

作　　者：周小明[1] 段彦军[1] 淮秀兰[1] 李勋锋[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100190

出　　处：《工程热物理学报》2013年第3期497-500,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目资助(No.51276181);国家自然科学基金项目资助(No.51106158);国家重点基础研究发展计划资助(No.2011CB710705)

摘　　要：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 acetone hydrogenation reaction in a fixed bed reactor is investigated by two-dimensional numerical simulation, in which the effects of packing model of catalyst particle on the hydrogenation reaction, flow and heat transfer are analysed. It is found that, the catalyst packing model can change the flow, temperature and concentration fields; as the angle θ = 0°, the isopropanol concentration in the reactor is the largest, and with the increase of the angle the isopropanol concentration is decreased, the highest temperature occurs at θ = 0°, and the lowest temperature occurs atθ= 60°. Therefore, the change of the catalyst packing model can increase the temperature of the reactor wall, and improve the reactor performance.

关 键 词：化学热泵 丙酮加氢 固定床反应器 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]