王小明,许松林,徐畅

• 1:天津大学化工学院制药工程系

摘要(Abstract)：

分子蒸馏是一种高效的液体分离技术,在工业生产领域具有广泛的应用前景。为了探究设备中液膜的流动状况,今使用计算流体力学软件FLUENT 6.3对刮膜式分子蒸馏过程进行模拟,分别考察了刮膜器的形状、转子转速、转子半径、转子与壁面间的缝隙等因素对不同黏度流体的液膜均匀程度和湍流程度的影响。结果表明圆形转子和倾斜刮板有助于液体在蒸发壁面上形成均匀分布的薄膜,因此更适用于分子蒸馏过程;转子的结构参数对高黏度物料的流动状况的影响更为显著,在一定范围内高黏度物料的均匀度和湍流度都随转子半径和缝隙的增大而增大。研究的模拟结果对分子蒸馏过程具有深刻的理论意义和实际指导意义,为刮膜式分子蒸馏装置的设计提供了参考。

关键词(KeyWords)： 分子蒸馏;刮膜;计算流体力学;转子结构;液膜;流动形态

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(20776097;20976118)

作者(Author): 王小明,许松林,徐畅

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