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Equilibrium theory for simulated moving bed adsorption processes
Author(s) -
Chiang Anthony S. T.
Publication year - 1998
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690441111
Subject(s) - countercurrent exchange , adsorption , thermodynamics , equivalence (formal languages) , simulated moving bed , equilibrium constant , chemistry , thermodynamic equilibrium , constant (computer programming) , separation process , selectivity , stoichiometry , chromatography , mathematics , physics , computer science , organic chemistry , discrete mathematics , programming language , catalysis
Abstract The steady‐state operation of a simulated moving bed (8MB) process can be modeled by that of an equivalence true countercurrent (TCC) adsorption unit. An equilibrium theory based on the TCC unit is very useful for the selection of a proper condition to operate an 8MB process. The exact analysis of such an equilibrium model, however, has been limited to systems following a constant selectivity stoichiometric isotherm, which is not frequently observed. In this article, the equilibrium theory was extended to a multi‐component system that follows a constant selectivity nonstoichiometric isotherm. An exact solution is presented for the complete separation regions on the parameter space. The analysis is further applied to cases where only partial separation can be achieved.