Abstract
A theoretical analysis of multicomponent adsorption in adiabatic exchange columns is presented. The system considered here is one-dimensional with negligible effects of diffusion and in which local equilibrium (of a nonlinear nature) obtains between the phases in contact. The theory of simple waves and that of discontinuities play key roles in the analysis. Countercurrent operations give rise to a free boundary analogue and introduce the concept of boundary discontinuities. Dependence of the system behavior upon the flow rate ratio is discussed. A finite column operation usually reaches a steady state and it is shown that the number of steady states attainable in the contacting region by varying the flow rate ratio is equal to the number of solute species present plus two. Formulations and discussions are carried out for countercurrent contact but these are equally well applicable to fixed bed operations by letting the flow rate ratio vanish. Applications will be illustrated in the following parts.
Published Version
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