The move towards processes in small and micro devices has been increased recently due to the enhanced heat and mass rate of these devices. One particular area of application is liquid–liquid extraction. The efficiency of the solvent extraction as a result of two-phase flow in an intensified channel highly depends on the flow patterns. In this work, the hydrodynamics of conventional polyethylene glycol 200 (PEG200) and simulated diesel have been investigated intensively by varying several parameters such as junction shape and diameter, channel diameter, and channel saturation. To study the effect of solvent properties, experiments were carried out by changing the polyethylene glycol to a eutectic solvent (DES) through adding a specific amount of tetra butyl ammonium bromide (TBAB) to the PEG200. The main observed patterns were the drop, plug, various states of annular flow, and irregular flow. Those patterns were highly influenced by the channel diameter. Using DES as a liquid solvent resulted in the development of a different form of plug flow known as plug dispersed. The measured pressure drop was found to raise with rising solvent velocity, solvent viscosity, and decreasing channel diameter. This work gives a clear understanding about the behavior of different solvents to achieve efficient sulfur reduction from liquid fuel in a small scale.

由于这些设备的热量和质量比率提高，最近朝着小型和微型设备的过程发展的趋势有所增加。一种特殊的应用领域是液液萃取。由于在增强通道中进行两相流动而导致的溶剂萃取效率在很大程度上取决于流动模式。在这项工作中，通过改变多个参数（例如接合处的形状和直径，通道直径和通道饱和度），对常规聚乙二醇200（PEG200）和模拟柴油的流体动力学进行了深入研究。为了研究溶剂性能的影响，通过在PEG200中添加一定量的四丁基溴化铵（TBAB）将聚乙二醇更改为低共熔溶剂（DES）进行了实验。观察到的主要模式是跌落，堵塞，环形流动和不规则流动的各种状态。这些图案受通道直径的影响很大。使用DES作为液体溶剂会导致形成另一种形式的活塞流，称为活塞分散。发现测得的压降随溶剂速度，溶剂粘度和通道直径的减小而增加。这项工作清楚地了解了不同溶剂的行为，以实现小规模地从液体燃料中高效还原硫。并减小通道直径。这项工作清楚地了解了不同溶剂的行为，以实现小规模地从液体燃料中高效还原硫。并减小通道直径。这项工作清楚地了解了不同溶剂的行为，以实现小规模地从液体燃料中高效还原硫。