Enhancing interfacial mass transfer for high‐viscosity fluids: Hydrodynamic and mass transfer by twin‐liquid film

Long He, Hanguang Xie, Yuan Zong, Ling Zhao, Gance Dai

Research output: Contribution to journalArticlepeer-review

Abstract

The twin-liquid film, which combines wall-bounded film supported by a solid wall and confined-free film through the opening window, has been investigated on a plate with multi-windows. The interaction of wall-bounded film and confined free film has been discussed and the optimal window configurations are obtained with consideration of mass transfer enhancement as well as film stability. The mass transfer rate of the opening window plate is increased by 1.9–2.6 times compared with the solid plate. The acceleration and thinning of the confined-free film are the primary causes of its mass transfer enhancement, with additional contributions from the thinning of the wall-bounded film. To achieve the highest mass transfer efficiency as viscosity increases and diffusion coefficient decreases, it is crucial to maximize the window size without compromising film formation. Twin-liquid films show promising applications in the reactors involving highly viscous fluids such as carbon capture and devolatilization.

Original languageEnglish
Article numbere18708
Pages (from-to)1-27
Number of pages27
JournalAIChE Journal
Early online date6 Jan 2025
DOIs
Publication statusPublished online - 6 Jan 2025

Bibliographical note

Publisher Copyright:
© 2025 American Institute of Chemical Engineers.

Data Access Statement

The numerical data from Figures 5, 6, 8, 9, 11, 12, and 15–24 aretabulated with the form of “. Zip” files in the Supporting Informa-tion. The simulation setup and methodology are explained inSection 3 of the main text. To ensure report data reliability andreproducibility, computed mass transfer outcomes were comparedwith theoretical values and validated for grid independence (seeFigure 5). Computed hydrodynamics result verification is discussedin another publication by the author, which can be accessed athttps://doi.org/10.1016/j.ces.2022.117691 and https://doi.org/10.1016/j.ces.2021.116531.

Keywords

  • hydrodynamic
  • mass transfer
  • multiple opening windows
  • twin-liquid film

Fingerprint

Dive into the research topics of 'Enhancing interfacial mass transfer for high‐viscosity fluids: Hydrodynamic and mass transfer by twin‐liquid film'. Together they form a unique fingerprint.

Cite this