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Permanent link (DOI): https://doi.org/10.7939/R3QR4NX5V

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Role of Water and Fine Solids in Onset of Coke Formation During Bitumen Cracking Open Access

Descriptions

Other title
Subject/Keyword
Bitumen Cracking
Coke
Supercritical Water
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Nhieu, Paul
Supervisor and department
Gray, Murray (Chemical and Materials Engineering)
Examining committee member and department
Semagina, Natalia (Chemical and Materials Engineering)
McCaffrey, William (Chemical and Materials Engineering)
Gray, Murray (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2014-07-15T10:18:36Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
The aim of this study was to examine the effect of steam and fine solids on coke formation during thermal cracking of bitumen. Experiments in a batch reactor at hydrothermal conditions determined the effects of fine solids and water on the onset of coke formation, total coke yield, and defined the overall conversion to light products of Athabasca vacuum tower bottoms. Removal of fine solids had significant effects on the onset time of coke formation while addition of water played a smaller role. The addition of water had no significant impact on onset time or total coke yield. The yield of cracked products, as determined by simulated distillation, was insensitive to water and fine solids. Based on the findings from this study, residual fine solids have a beneficial effect on thermal upgrading, while water gives little impact. Fine solids allows for longer reaction before coke formation, enabling increased bitumen conversions.
Language
English
DOI
doi:10.7939/R3QR4NX5V
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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