Mass transfer investigation in liquid-liquid two-phase flow in a corrugated millichannel

IF 5.5 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Advances Pub Date : 2025-03-21 DOI:10.1016/j.ceja.2025.100739

Antoinette Maarawi Chidraoui , Zoé Anxionnaz-Minvielle , Pierre Coste , Nathalie Di Miceli Raimondi , Michel Cabassud

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Abstract

The present analysis investigates mass transfer phenomena occurring in liquid-liquid two-phase flow within 2D-meandering millichannels of varying dimensions (2, 3, and 4 mm). Enhanced comprehension is facilitated by previous flow visualizations that led to establishing a flow patterns map for these millichannels. The overall mass transfer coefficient (k_La) is experimentally evaluated by measuring the solute concentration transferred between phases, selectively extracted from the organic phase at the reactor outlet. Additionally, to anticipate mass transfer coefficient variations in zigzag channels of various sizes at varying flowrates, aligning with industrial requirements, experimental k_La results are correlated with observed flow regimes. Consequently, operational conditions and fluid system properties enable flow regime identification from the previously established flow map, facilitating corresponding mass transfer correlation identification. This innovative approach integrates flow study and mass transfer analysis within millireactors.

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波纹微通道液-液两相流传质研究

本分析研究了在不同尺寸（2,3和4mm）的二维弯曲毫米通道内液-液两相流动中的传质现象。以前的流可视化有助于增强理解，从而建立了这些微通道的流模式图。总传质系数（kLa）是通过测量在反应器出口有选择地从有机相中提取的溶质浓度在相间转移的实验来评估的。此外，为了预测不同流量下不同尺寸之字形通道的传质系数变化，与工业要求保持一致，实验kLa结果与观察到的流动状态相关联。因此，操作条件和流体系统特性可以从先前建立的流程图中识别流动型，从而促进相应的传质相关性识别。这种创新的方法将流动研究和传质分析集成在微反应器中。

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