Abstract
Compared to axial-flow rapid pressure swing adsorption (RPSA) processes, radial-flow RPSA processes can have the larger cross section for the same volume of adsorbers. Radial-flow RPSA processes, thus, may have the advantage of a low-pressure drop for the same volumetric flow and a small particle size of the adsorbent can be used for the same pressure drop. After an innovative coordinate transformation, the governing equations of both radial- and axial-flow RPSA processes carry a similar form. Therefore, only a simulation program is needed and is developed to simulate the dynamics of the adsorbers for both systems. The simulation results of an axial-flow RPSA were compared with the experimental data in the literature. For the modeling of radial-flow RPSA processes, the parameter of effective length is equivalent to the length of the packed bed of axial-flow RPSA processes. For the same feed pressure and the same amount of adsorbent, the separation performance of the radial-flow RPSA processes would be bet...
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