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Modeling the Absorption of Acidic Gases by Alkanolamine Solutions Incorporating Several Reactions
Author(s) -
Kabouche A.,
Meniai A.H.,
Bencheikhlehocine M.
Publication year - 2005
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200407008
Subject(s) - alkanolamine , mass transfer , absorption (acoustics) , chemical reaction , boundary value problem , thermodynamics , chemistry , newton's method , differential equation , finite difference , finite difference method , chemical equation , chemical equilibrium , mathematics , materials science , physics , mathematical analysis , nonlinear system , aqueous solution , organic chemistry , quantum mechanics , composite material
A general model, based on double film theory, is developed to study absorption with chemical reactions. In the liquid film region, the model is a set of differential equations that describe the mass transfer accompanying several chemical reactions; the resolution of the system is achieved by the finite difference method using an implicit scheme combined with Newton's method. Continuity equations and equilibrium coefficients are exploited in the treatment of the bulk region, which is based on the Newton‐Raphson method; the results are used directly as boundary conditions in the liquid film equations. Maxwell‐Stefan equations have been used as a rigorous approach in this model.