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

doi:10.1002/aic.18708

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 journal › Article › peer-review

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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 language	English
Article number	e18708
Pages (from-to)	1-27
Number of pages	27
Journal	AIChE Journal
Volume	71
Issue number	4
Early online date	6 Jan 2025
DOIs	https://doi.org/10.1002/aic.18708
Publication status	Published (in print/issue) - 30 Apr 2025

Bibliographical note

Publisher Copyright:
© 2025 American Institute of Chemical Engineers.

Data Availability 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.

Funding

National Natural Science Foundation of China,Grant/Award Numbers: 22478105, 22250005.

Funders	Funder number
National Natural Science Foundation of China	22478105 22250005

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 13 Climate Action

Keywords

hydrodynamic
mass transfer
multiple opening windows
twin-liquid film

Access to Document

10.1002/aic.18708

Original-Enhancing interfacial mass transfer for high-viscosity fluids hydrodynamic and mass transfer by twin-liquid filmAuthor Accepted Manuscript, 697 KB

Cite this

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

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.",

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T1 - Enhancing interfacial mass transfer for high‐viscosity fluids: Hydrodynamic and mass transfer by twin‐liquid film

AU - He, Long

AU - Xie, Hanguang

AU - Zong, Yuan

AU - Zhao, Ling

AU - Dai, Gance

PY - 2025/4/30

Y1 - 2025/4/30

N2 - 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.

AB - 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.

KW - hydrodynamic

KW - mass transfer

KW - multiple opening windows

KW - twin-liquid film

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

Abstract

Bibliographical note

Data Availability Statement

Funding

UN SDGs

Keywords

Access to Document

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