Journal
APPLIED CATALYSIS A-GENERAL
Volume 425, Issue -, Pages 13-27Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2012.02.034
Keywords
Dynamic modeling; Catalytic hydrotreating; Trickle-bed reactor
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Funding
- Instituto Mexicano del Petroleo
- CONACyT
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This paper describes a dynamic heterogeneous one-dimensional model of trickle-bed reactor used for catalytic hydrotreating of oil fractions. The model takes into consideration the main reactions occurring in the hydrotreating process: hydrodesulfurization, hydrodenitrogenation, hydrodearomatization (mono-, di-, and polyaroamatics), olefins hydrogenation, and mild hydrocracking (gas oil, naphtha, and gases). Kinetic parameters were determined from experimental data obtained in an isothermal bench-scale reactor during hydrotreating of atmospheric gas oil coming from a heavy crude oil over a commercial CoMo catalyst. The developed model was used to predict the dynamic behavior of an industrial hydrotreating reactor within a wide range of reaction conditions. Changes in concentration, partial pressure, and temperature profiles are simulated and discussed as a function of reactor axial position and time. The simulation results obtained with the proposed dynamic model showed good agreement with experimental data. (C) 2012 Elsevier B.V. All rights reserved.
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