The Flow Pattern and Mass Transfer of Gas-Liquid-LiquidThree Phase Flow in Microchannel

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Abstract

The double T-junction microchannel was used to research the flow pattern and mass transfer of gas-liquid-liquid three phase flow in microchannel.30% TBP(in cyclohexane)-acetic acid-water was chosen as extraction system,and air as inserting gas.Effect of void fraction expressed as α (ratio of gas volume flow rate to total volume flow rate) and volume ratio of organic phase to aqueous phase expressed as q on flow regime and mass transfer were experimentally investigated.The overall volumetric mean mass transfer coefficient k_La was correlated with q,Reynolds number of gas phase Re_g and mean Reynolds number of liquid phase Re_M.With the introduction of gas,gas-liquid-liquid slug flow can be formed instead of liquid-liquid parallel flow.The mass transfer coefficient of gas-liquid-liquid slug flow is also significantly enhanced because of the high dispersion of two immiscible liquid phase and the internal circulation effect.

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	Articles by authors
	Xun Tao
	Cai Wangfeng
	Zhang Xubin

Keywords： microchannel； gas-liquid-liquid slug flow； flow pattern； mass transfer coefficient

Received 2016-04-12;

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Cite this article:

Xun Tao, Cai Wangfeng, Zhang Xubin.The Flow Pattern and Mass Transfer of Gas-Liquid-LiquidThree Phase Flow in Microchannel[J] Chemcial Industry and Engineering, 2017,V34(6): 81-87

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