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Permanent link (DOI): https://doi.org/10.7939/R3K32X

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Vapour Phase Cracking of Bitumen Derived Heavy Gas Oil Open Access

Descriptions

Other title
Subject/Keyword
Bitumen
Cracking
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Bu, Weida
Supervisor and department
Dr. Murray R. Gray (Chemical and Materials Engineering)
Examining committee member and department
Dr. Murray Gray (Chemical and Materials Engineering)
Dr. Larry Unsworth (Chemical and Materials Engineering)
Dr. David Bressler (Agriculture Food and Nutritional Science)
Dr. Arno de Klerk (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Oil Sands Upgrading
Date accepted
2012-08-29T15:50:07Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
The kinetics of vapor phase cracking of bitumen derived heavy gas oil and the quality of liquid products were investigated at temperatures of 600-700 °C. Fixed and condensed gases were analyzed by gas chromatography. The quality of liquid products was characterized using simulated distillation, elemental analysis and 13C NMR. Consistent with gas phase cracking behavior, the coke yields were negligible, below 2 %. The yields of C2-C3 olefins were 2 to 16 wt% compared with the yields of C2-C3 alkanes from 0.2 to 1.0 wt%. Hydrogen content of liquid products was lost significantly, corresponding to increase of aromatic carbon content with increase of conversion. A two-step kinetic model including fast dehydrogenation and slower cracking was proposed on the basis of chemical structure change of the reactant. The activation energy of the overall cracking reaction on reactive materials was 208 kJ/mol based on full analysis of the reactor.
Language
English
DOI
doi:10.7939/R3K32X
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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File author: Weida Bu
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