Accelerated Deactivation of Hydrotreating Catalysts by Coke Deposition

Pilot plant experiments are designed to allow for evaluation of the impact caused by increasing the severity of key operation variables on deactivation of hydrotreating (HDT) catalysts, through accelerated runs performed in short periods of time. One of the main aspects of this work is the use of a...

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Bibliographic Details
Published inIndustrial & engineering chemistry research Vol. 50; no. 10; pp. 5975 - 5981
Main Authors Pacheco, Marcelo Edral, Martins Salim, Vera Maria, Pinto, José Carlos
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 18.05.2011
Subjects
Applied sciences
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Exact sciences and technology
General and physical chemistry
Kinetics, Catalysis, and Reaction Engineering
Reactors
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Deactivation
Hydrotreating
Catalyst
Coke deposition
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Summary:Pilot plant experiments are designed to allow for evaluation of the impact caused by increasing the severity of key operation variables on deactivation of hydrotreating (HDT) catalysts, through accelerated runs performed in short periods of time. One of the main aspects of this work is the use of a kinetic approach in order to observe the impact of accelerated deactivation conditions upon catalyst performances during hydrodesulfurization (HDS), hydrodenitrogenation (HDN), and aromatic hydrogenation (HDA) reactions. This approach allows for evaluation of catalyst deactivation for each of the analyzed reactions. Results obtained with a reference catalyst indicate that the proposed methodology is able to deactivate the catalyst effectively, leading to proper representation of actual industrial deactivation at the end of a catalyst life cycle.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie1023595