填料萃取塔的研究现状及进展

综述了填料萃取塔的特点、国内外对填料萃取塔中填料的选择与开发并且详述了部分填料的工业应用，同时详细阐述了研究者使用不同的理论模型和方法对填料萃取塔的传质特性和流体动力学特性的研究。其中研究方法包括实验方法、经验公式方法及模拟方法。通过实验，能获得准确的液滴直径、分散相体积分数、液泛速度与滑移速度等数据，再通过计算机模拟则能获得详细的流场、温度场、浓度场等微观信息。可以预见，实验方法、经验公式、计算机模拟的有机结合将成为解决填料萃取塔传质和流体动力学问题的有效手段。

Research status and progress for packed extraction column

The characteristics of the packed extraction column as well as the selection and development of packing in the packed extraction column were reviewed in this paper. The industrial application of the part of the packing was exemplified. Various theoretical models and methods used to study the mass transfer and fluid dynamics characteristics of the packed extraction column were described. The research methods of the packed extraction column consist of experimental method, empirical formula and simulation method. The droplet diameter, the dispersed phase volume fraction, the flooding velocity and slip speed by experiment can be obtained accurately, while detailed microscopic information of the flow field, temperature field and concentration field through computer simulation can be acquired. It can be foreseen that the combination of experimental method, empirical formula, computer simulation will become an effective methods to solve the problems of mass transfer and fluid dynamics of the packed extraction column.