A one-dimensional transient model of down-flow through a swelling packed porous bed

A transient model of down-flow through an ion-exchange column in which the resin swells has been developed. The model is herein described and results are presented. Wall friction can lead to high bed stresses when the resin in columns with high length to diameter ratios swells. These stresses can le...

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Bibliographic Details
Published in:Chemical engineering science 2006-04, Vol.61 (8), p.2688-2700
Main Author: Shadday, Martin A.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Hydrodynamics of contact apparatus
Ion exchange
Modelling
Packed bed
Swelling resin
Transient response
Wall friction
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Summary:A transient model of down-flow through an ion-exchange column in which the resin swells has been developed. The model is herein described and results are presented. Wall friction can lead to high bed stresses when the resin in columns with high length to diameter ratios swells. These stresses can lead to high and potentially excursive hydraulic pressure drops along a column. A non-dimensional grouping that effectively correlates the final steady-state hydraulic behavior of a column, with the resin compressibility and column geometric and flow parameters, has been determined.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2005.11.041