计算流体力学在填充床反应器中的应用进展  

Application Progress of Computational Fluid Dynamics in Packed-Bed Reactors

作　　者：穆斌[1] 高韦[1] 贾金明[1] 程振民[1] 

机构地区：[1]华东理工大学国家重点实验室联合化学反应工程研究所,上海200237

出　　处：《化学反应工程与工艺》2005年第2期149-157,共9页Chemical Reaction Engineering and Technology

摘　　要：在使用计算流体力学(CFD)方法模拟填充床反应器时,为了描述填充床中的气液流动情况,目前主要运用基于体积平均法的双流体数学模型,辅以空隙率分布,填料润湿效率以及轴向扩散等经验关联式来计算填充床中的压降、持液量、停留时间分布等重要参数。近年来填充床反应器CFD数学模型韵几个研究重点是动量交换系数、毛细管压力以及床层空隙率的非均匀分布性。简要介绍了涓流床、固定床、填料塔等填充床反应器及其内部构件研究中CFD软件模拟的应用进展情况和发展趋势。When simulating packed-bed reactors with Computational Fluid Dynamics (CFD), to correctly describe the flow of gas-liquid, the application of the two-fluid model based on the volume-average mass and momentum balance equations, assisted with the empirical correlations of the porosity distribution, the external wetting efficiency of packing and the axial mass dispersion, was an important direction in predicting the pressure drop, holdup and residence time distribution (RTD) etc. Several of the focuses of CFD model in packed-bed reactors were studied, namely, the momentum exchange coefficient, the capillary pressure and the void fraction. Then, recent application progress of CFD in trickle-bed, fixed-bed, packed column reactors and internal structures were outlined, and the future trends of the development were given.

关 键 词：计算流体力学 涓流床 固定床 填料塔 多相反应器 双流体模型 填充床反应器 气液分布器 

分 类 号：TQ051.1[化学工程] TQ012