Modeling and Simulation of a Downer-Type HS-FCC Unit

Mathematical models and simulations of an integrated downer−regenerator FCC unit are presented. The models describe the steady-state nonisothermal behavior of the interdependent heavy oil cracking downflow reactor and catalyst regeneration fluidized-bed reactor. The models are rooted in four-lump cr...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2008-12, Vol.47 (23), p.9018-9024
Main Authors: Shaikh, Abdullah A, Al-Mutairi, Eid M, Ino, Takashi
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Kinetics, Catalysis, and Reaction Engineering
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Summary:Mathematical models and simulations of an integrated downer−regenerator FCC unit are presented. The models describe the steady-state nonisothermal behavior of the interdependent heavy oil cracking downflow reactor and catalyst regeneration fluidized-bed reactor. The models are rooted in four-lump cracking reaction kinetics and complete combustion kinetics for the regenerator reactions. Simulations results for the downer-type unit are partially validated against data collected in a 0.1−0.3 b/day pilot plant that was operated in the high-severity mode. The results are fairly reasonable especially in regard to predicting the performance of the cracking reactor.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie800060y