Gas desorption from falling liquid films in entrance region of inclined wetted-wall columns with an overflow-type distributor

The effect of the developing laminar flow of falling liquid films in inclined wetted-wall columns with an overflow-type distributor on the liquid-phase mass transfer was investigated theoretically and experimentally. The equation of motion for wave-free flow of the falling liquid film and the convec...

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Bibliographic Details
Published in:Chemical engineering science 1990, Vol.45 (2), p.437-442
Main Authors: Hikita, Haruo, Kosaku, Ishimi, Sadatoshi, Koroyasu
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Heat and mass transfer. Packings, plates
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Summary:The effect of the developing laminar flow of falling liquid films in inclined wetted-wall columns with an overflow-type distributor on the liquid-phase mass transfer was investigated theoretically and experimentally. The equation of motion for wave-free flow of the falling liquid film and the convective-diffusion equation for mass transfer in the falling liquid film, based on the boundary layer approximation, were solved simultaneously. A numerical solution for the liquid-phase Sherwood number was obtained as a function of the liquid-phase Reynolds and Schmidt numbers, the angle of inclination of the wetted-wall plate and the dimensionless distance in flow direction. Experiments were carried out on the desorption of oxygen from water into pure nitrogen. The experimental data were in fairly good agreement with the theoretical predictions in the entrance region of the falling liquid films.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(90)87029-R