Kinetic Modeling of Hydrodesulphurization of Residual Oils. I. Power Law Model

The kinetics of hydrodesulphurization (HDS) reaction of residual oils at temperatures of 320-440°C has been explored leading to the development of a power law model. The reaction order was found to decrease with increasing temperature from 4.33 to 1.42 while the rate constant increased with temperat...

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Bibliographic Details
Published in:Petroleum science and technology 2003-01, Vol.21 (9-10), p.1475-1488
Main Authors: Oyekunle, L. O., Kalejaiye, B. O.
Format: Article
Language:English
Subjects:
Applied sciences
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
Hydrodesulphurization
Kinetic analysis
Power law model
Processing of crude oil and oils from shales and tar sands. Processes. Equipment. Refinery and treatment units
Reaction order
Residual oils
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Summary:The kinetics of hydrodesulphurization (HDS) reaction of residual oils at temperatures of 320-440°C has been explored leading to the development of a power law model. The reaction order was found to decrease with increasing temperature from 4.33 to 1.42 while the rate constant increased with temperature from 0.312 to 10.847 kg/mol h. The activation energy of 101.0 kJ/mol and a frequency factor of 3.42 × 10 8 were also recorded. These results are in excellent agreement with other work reported in the literature. The study also revealed the sharp contrast between HDS and Sulphurization, which has its reaction order increasing with temperature.
ISSN:1091-6466
1532-2459
DOI:10.1081/LFT-120023212