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V. L. Zelenko and L. I. Heiftes
Estimation
of Potential Contribution of the Bed Structure Regularization into the Adsorber
Downsizing in the Processes of Adsorptive Gas Fractionation
Abstract
Five
similarity criteria of the adsorber have been formulated: 1) ratio of the
adsorber length to thickness of the
front, 2) the adsorber productivity, 3) the adsorbate relative molar density at
the adsorber inlet, 4) ratio of the time of a grain saturation with the
adsorbate to the grain residence time in the front zone, 5) Peclet number
composed on the basis of the filtration rate, the specific size of the
filtration area (grain radius or plate
semi-gap) and molecular diffusion coefficient. These criteria values vary to a
certain extent under modification of the nanopore mesh tortuosity. The result
of a not complicated mathematical analysis has shown that the adsorber volume
decreases in proportion to the decrease of the nanopore tortuosity in
consequence of the adsorbent bed structure regularization. Thus, the pressure
drop within the adsorber, and, hence, the power inputs remain unchanged.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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