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Multiphase processes with ionic liquids in microreactors: hydrodynamics, mass transfer and applications
Chemical Engineering Science ( IF 4.7 ) Pub Date : 2018-11-01 , DOI: 10.1016/j.ces.2018.06.007
Chaoqun Yao , Yuchao Zhao , Guangwen Chen

Abstract Microreaction technology is an important technology for process intensification and high efficient chemical synthesis. The use of ionic liquids (ILs) as novel reaction media is another rapidly developing orientation for process intensification considering their strong dissolubility, low vapor pressure and adaptable physicochemical properties. The combination of the two technologies has been emerging fast in various applications, due to the ability to intensify the utility of ILs in microreactors. This review presents a summary of the recent progress on the transport and reaction processes with ILs in microreactors. A typical characteristic of ILs is their higher viscosity, so the effects of fluid viscosity on the hydrodynamics and mass transfer are highlighted. In addition, new correlations considering both shear and inertial forces are proposed to predict the flow regime transitions in a wide range of fluid viscosity. With respect to mass transfer, the unit cell model for Taylor flow is modified to represent the effect of viscosity on flow topology inside droplets/slugs.

中文翻译:

微反应器中离子液体的多相过程:流体动力学、传质和应用

摘要 微反应技术是实现过程强化和高效化学合成的重要技术。考虑到离子液体 (IL) 的强溶解性、低蒸气压和适应性强的物理化学性质,使用离子液体 (IL) 作为新型反应介质是工艺强化的另一个快速发展方向。由于能够加强微反应器中 IL 的效用,这两种技术的结合在各种应用中迅速出现。本综述总结了微反应器中离子液体的运输和反应过程的最新进展。ILs 的一个典型特征是它们的粘度较高,因此突出了流体粘度对流体力学和传质的影响。此外,提出了考虑剪切力和惯性力的新相关性,以预测广泛的流体粘度范围内的流态转变。关于传质,泰勒流的晶胞模型经过修改,以表示粘度对液滴/段塞内部流动拓扑结构的影响。
更新日期:2018-11-01
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