旋转填充床内多相流动、传质与反应过程的CFD模拟

项目名称： 旋转填充床内多相流动、传质与反应过程的CFD模拟

项目编号： No.21206003

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 化学工程及工业化学

项目作者： 向阳

作者单位： 北京化工大学

项目金额： 25万元

中文摘要： 本课题针对非常规化工过程强化的超重力技术，将深入研究旋转填料床内多相流动、传质与反应的规律。研究内容包括：拟采用先进测量技术，实验研究超重力环境下多孔介质中微尺度液体分散相的形成与变形机制、存在形态、分布状况及聚并规律；通过理论分析，借助于计算流体力学（CFD）建立旋转填充床内气液两相流动、传递与反应过程的理论模型，研究多相体系中不同尺度上结构对流动、传递性能的影响，如微小尺度上分散相与分散相、分散相与连续流体间以及设备内构件对流动与传递行为的影响规律；建立结构特征与传递性能之间的定量关系，并提出复杂多相流传递过程强化的方法。通过本课题的研究，可望为以结构调控为核心的超重力旋转床的强化和放大设计提供新思路和理论基础。

中文关键词： 旋转填充床；可视化技术；多相流动；CFD；传质

英文摘要： This proposal studies multiphase flow, mass transfer and reaction in a rotating packed bed, aiming at the intensification of unconventional chemical engineering process. The research contents are as followings. The formation and deformation mechanisms, the existing forms and the coalescence rules of microscale liquid in porous medium under the high gravity environment will be revealed by advanced measurement techniques and experimental ways. Moreover, a theoretical model will be built to characterize the transfer and reaction process of RPB in multiphase system by theoretical analysis and computational fluid dynamics (CFD). The effects of various structure scales on the behaviors of multiphase flow and mass transfer are studies, which include small-scale dispersed phase, the dispersed phase and continuous phase, the fluid and equipment internals. A quantitative relationship between structural characteristic and transfer performance will be established. After this investigation, we are expected to put forward new ideas for the intensification of multiphase flow and mass transfer process and provide theoretical basis for scaling up rotating packed bed.

英文关键词： rotating packed bed；visualization technology；CFD；multiphase flow；mass transfer