Studies on the Kinetics of Heavy Oil Catalytic Pyrolysis

For Daqing atmospheric residue catalytic pyrolysis over a LCM-5 catalyst, the effects of the reaction temperature, residence time, and weight ratios of catalyst to oil and steam to oil on product distribution were studied in a confined fluidized-bed reactor. The results show that the effects of thes...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2003-11, Vol.42 (24), p.6012-6019
Main Authors: MENG, Xiang-Hai, XU, Chun-Ming, LI LI, GAO, Jin-Sen
Format: Article
Language:English
Subjects:
Catalysis
Catalytic reactions
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:For Daqing atmospheric residue catalytic pyrolysis over a LCM-5 catalyst, the effects of the reaction temperature, residence time, and weight ratios of catalyst to oil and steam to oil on product distribution were studied in a confined fluidized-bed reactor. The results show that the effects of these factors differ from each other, while the reaction temperature is the most important one. Ethylene yield increases with the reaction temperature, while the yields of propylene, butylene, and overall light olefins pass through maxima. A new five-lump kinetic model is developed for heavy oil catalytic pyrolysis, and a simple parameter estimation method is proposed in this paper. Rate constants and model parameters are estimated with the proposed method and experimental data. The simulated results illustrate that the five-lump kinetic model can well predict the yields of gasoline and diesel, gaseous alkanes, and light olefins.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie030433l