Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors

Yanyan Liu; Chaoqun Yao; Guangwen Chen

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Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors
- Chinese Journal of Chemical Engineering Vol. 50, Issue 10, Pages: 85-94(2022)
- Affiliations：
  
  1. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences,Dalian,China,116023
  2. University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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Yanyan Liu, Chaoqun Yao, Guangwen Chen. Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 85-94.
DOI：

Yanyan Liu, Chaoqun Yao, Guangwen Chen. Gas-liquid-liquid slug flow and mass transfer in hydrophilic and hydrophobic microreactors[J]. Chinese Journal of Chemical Engineering, 2022, 50(10): 85-94. DOI：

摘要

Abstract

Gas-liquid-liquid three-phase slug flow was generated in both hydrophilic and hydrophobic microreactors with double T-junctions. The bubble-droplet relative movement and the local mass transfer within the continuous slug and the dispersed droplet were investigated. It was found that bubbles moved faster than droplets under low capillary number (

)

while droplets moved faster upon the increase of

due to the increased inertia. For the first time

we observed that the increased viscosity of droplets fastened the droplet movement. The mass transfer in the continuous slug was dominated by convection

leading to nearly constant global mass transfer coefficient (

); while that in the dispersed droplet was dominated by diffusion

resulting in

decreasing along the channel. Such features are analogical to the corresponding gas-liquid or liquid-liquid two-phase slug flow

but the formation of bubble-droplet clusters caused by relative movement lowered the absolute mass transfer coefficient. These results provide insights for the precise manipulation of gas-liquid-liquid slug flow in microreactors towards process optimization.

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