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On boundary conditions to the film model of mass transfer in chemical absorption
Author(s) -
Starzak Maciej,
Ledakowicz Stanisuw
Publication year - 1988
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450660618
Subject(s) - mass transfer , absorption (acoustics) , boundary value problem , boundary (topology) , simple (philosophy) , mechanics , materials science , chemistry , mathematical analysis , analytical chemistry (journal) , thermodynamics , physics , mathematics , chromatography , composite material , philosophy , epistemology
The problem of appropriate boundary conditions for mass transfer within the liquid film in chemical absorption ih reconsidered. It has been shown that the most general solution to the problem of mass transfer in the liquid film can be obtained if a fixed bulk composition is taken as a film‐bulk boundary condition to the differential balance equations of the film. This method leads to solutions which can be incorporated into absorber balance equations of any type. As an illustrative example, the simultaneous absorption of two gases which react together in a semi‐batch absorber is discussed. A new, approximate but very simple and accurate solution to this problem is proposed.