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Effect of flow maldistribution on conversion and selectivity in radial flow fixed-bed reactors

✍ Scribed by Peter R. Ponzi; Larry A. Kaye

Publisher: American Institute of Chemical Engineers
Year: 1979
Tongue: English
Weight: 686 KB
Volume: 25
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690250111

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✦ Synopsis

This paper examines the effect of flow maldistribution on the predicted conversion and selectivity in a radial flow fixed-bed reactor. A simple model was developed to relate gas maldistribution to the catalyst bed to the conversion with first-and second-order reactions and to selectivity for first-order reactions in series and parallel. For the cases considered, the conversion debit due to maldistribution of the gas phase was as much as 11%. The model was extended to cover adiabatic conditions for simple first-order reactions. For an exothermic reaction, maldistributions can enhance conversion over that obtained with a uniformly distributed gas phase.

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