Mathematical modeling of catalytic fluidized-bed reactors—I. The multistage three-phase model

The purpose of this paper is to develop a novel model for gas-solid fluidized-bed catalytic reactors. This model is called the “multistage three-phase model”. It considers the fluid bed to be composed of a number of equivalent stages in series. Within each stage exchange of gas takes place between t...

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Bibliographic Details
Published in:Chemical engineering science 1988, Vol.43 (9), p.2477-2486
Main Authors: El-Halwagi, Mahmoud M., El-Rifai, Mahmoud A.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Reactors
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Summary:The purpose of this paper is to develop a novel model for gas-solid fluidized-bed catalytic reactors. This model is called the “multistage three-phase model”. It considers the fluid bed to be composed of a number of equivalent stages in series. Within each stage exchange of gas takes place between the bubble, cloud-wake and emulsion phases. An exact analytical solution for the concentration profiles along the bed is obtained. All parameters in the model are correlated with known or experimentally obtainable quantities. Model predictions are shown to compare reasonably well with various published experimental data on conversions of gas-fluidized catalytic reactors. A worked numerical example is given to demonstrate the applicability of the proposed model.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(88)85182-0