Hydrodynamics and Scale-Up of Liquid-Liquid Extractors

研究人员正在开发一种光学激光探针来测量两相萃取系统中的液滴大小分布和速度。这些测量结果将最终用于确定萃取柱操作条件对不同直径和不同内部混合装置的萃取柱中液滴大小、液滴速度和柱持率的空间变化的影响。特别感兴趣的将是评估放大对各种类型的商业塔中分散相反混和旁路程度的影响。还将开发一种计算机代码，用于预测抽提装置各个阶段的流型、湍流特性以及局部液滴破裂和凝聚率。

Research is underway to develop an optical laser probe to measure drop size distributions and velocities in two-phase extraction systems. These measurements will be used ultimately to determine the effect of extraction column operating conditions on the spatial variations of the drop size, drop velocity, and column hold-up in extraction columns of different diameters and different internal mixing devices. Of particular interest will be the assessment of the effect of scale-up on the degree of dispersed phase backmixing and bypassing in various types of commercial columns. A computer code for the prediction of the flow patterns, turbulence characteristics, and the local droplet breakage and coalescence rates in the individual stage of an extraction unit also will be developed.