Analysis of a model for a nonisothermal continuous fluidized bed catalytic reactor

Dragomir B. Bukur, Charles V. Wittmann, Neal R. Amundson

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Abstract

A three-phase model, consisting of a dilute or bubble phase, an interstitial gas phase and a solids phase, has been developed for a non-isothermal gas fluidized-bed catalytic reactor with continuous circulation of catalyst particles. The dilute phase is assumed to be in plug flow, the interstitial gas is considered to be either perfectly mixed or in plug flow, and the particles are assumed to be perfectly mixed. It is shown that the conversion in a reactor and steady state temperature and concentration profiles are the same irrespectively of the assumed flow pattern in the interstitial gas. The numerical computations were done for the case of a single irreversible reaction with or without catalyst decay and for the case of two consecutive irreversible reactions. In the case of an adiabatic reactor and ordinary exothermic reactions, or in the case of a cooled reactor with a highly exothermic reaction, multiple steady states may occur.

Original languageEnglish
Pages (from-to)1173-1192
Number of pages20
JournalChemical Engineering Science
Volume29
Issue number5
DOIs
Publication statusPublished - 1974
Externally publishedYes

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ASJC Scopus subject areas

  • Chemical Engineering(all)

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