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Creeping reaction zone in a catalytic, fixed-bed reactor: a cell model approach

✍ Scribed by Hyun-Ku Rhee; Dan Foley; Neal R. Amundson

Book ID
103002562
Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
651 KB
Volume
28
Category
Article
ISSN
0009-2509

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✦ Synopsis

Abshct-A coupled cell model is used to study the creeping of the reaction zone in catalytic fixed-bed reactors. Axial conduction is found to give rise to a discrepancy between the overall rate of heat generation and that of heat removal and such a discrepancy causes the creep of the reaction zone. An explicit formuIa for the creep velocity is derived in terms of the end conditions, superficial velocity, heat capacity ratio between phases, and heat of reaction. The individual effect of superficial velocity, reactant feed concentration, and feed temperature is investigated numerically and all the results turn out to be consistent with experimental observations of others. Potential applications are also suggested.

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A two dimensional heterogeneous model fo
A two dimensional heterogeneous model for fixed bed catalytic reactors
✍ A.P. de Wasch; G.F. Froment πŸ“‚ Article πŸ“… 1971 πŸ› Elsevier Science 🌐 English βš– 279 KB

The paper presents a two dimensional model for a fixed bed catalytic reactor in which a distinction is made between fluid and solid temperatures and partial pressures. The importance of the boundary conditions for the radial heat transfer on predicted axial and radial profiles is illustrated. The pr