In this work, the liquid–liquid two-phase pressure drop and mass transfer characteristics in micro-packed beds with different shaped packing are investigated. The experimental results show that the liquid–liquid mass transfer performance of micro-packed bed is significantly affected by both apparent flow rates and phase ratio. By changing the characteristic size of the micro-packed bed, the experimental results show that the average volume mass transfer coefficient has no obvious correlation with the length of the bed, which indicates that the flow and dispersion behavior along the length of the micro-packed bed is basically stable. By considering dispersion strengthening, vortex strengthening and size effect, a semi-empirical model for predicting liquid–liquid mass transfer performance in a micro-packed bed is established for the first time. The model is in good agreement with the experimental results and has strong applicability to various shaped packings. In addition, by considering the contribution of inertia force, viscous force and interfacial tension to energy dissipation, a semi-empirical model of liquid–liquid two-phase pressure drop in a micro-packed bed is established. The pressure drop prediction model can also be applied to different shaped packings.

中文翻译：

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不同形状填料微填充床中的液-液传质和压降行为

在这项工作中，研究了不同形状填料的微填充床中的液液两相压降和传质特性。实验结果表明，微填充床的液-液传质性能受表观流量和相比的影响显着。通过改变微填充床的特征尺寸，实验结果表明，平均体积传质系数与床的长度没有明显的相关性，这表明沿微填充床长度的流动和分散行为床基本稳定。通过考虑弥散强化、涡流强化和尺寸效应，首次建立了预测微填充床液-液传质性能的半经验模型。该模型与实验结果吻合较好，对各种异型填料具有较强的适用性。此外，考虑惯性力、粘性力和界面张力对能量耗散的贡献，建立了微填充床液液两相压降的半经验模型。压降预测模型也可以应用于不同形状的填料。