Air‐Jet Experimental Study and Modeling of Attrition Behavior for Fluid Catalytic Cracking Catalysts

Fluid catalytic cracking (FCC) processes employ microspheroidal catalyst particles, which play a significant role in the most important part of a refinery. These catalysts are subject to attrition because of the nature of FCC process circulation in the reactor regenerator. Attrition tests according...

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Bibliographic Details
Published in:Chemical engineering & technology 2018-11, Vol.41 (11), p.2223-2232
Main Authors: Ghazvini, Saba Foroutan, Ebrahimi, Ali Afshar
Format: Article
Language:English
Subjects:
Attrition
Catalysts
Catalytic cracking
Comminution
Computer simulation
Downstream effects
Fluid catalytic cracking
Fluidized beds
Fragmentation
Mass distribution
Particle size distribution
Refineries
Response surface methodology
Scanning electron microscopy
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Summary:Fluid catalytic cracking (FCC) processes employ microspheroidal catalyst particles, which play a significant role in the most important part of a refinery. These catalysts are subject to attrition because of the nature of FCC process circulation in the reactor regenerator. Attrition tests according to the American Society for Testing and Materials (ASTM) standards were carried out for two FCC catalysts in both fresh and spent forms. Attrition characteristics and catalyst resistance were investigated by particle size distribution and scanning electron microscopy. Response surface methodology using a central composite design was applied to simulate the mass distribution of samples in the downstream. This method was used to investigate the effect of time on attrition behavior of fresh and spent forms of the catalysts. Fluid catalytic cracking (FCC) is one of the most important processes in refineries. The main part of the FCC process is the reaction and regeneration in which the catalyst is being circulated. In this work, the attrition resistance, surface properties, and catalyst loss have been investigated on a domestic refinery with residue fluid catalytic cracking catalysts in both fresh and spent forms.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.201800198