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Permanent link (DOI): https://doi.org/10.7939/R39T19

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Mixing Effects on Chemical Demulsifier Performance in Diluted Bitumen and Froth Open Access

Descriptions

Other title
Subject/Keyword
mixing
oil sands
settling
demulsifier
froth treatment
stirred tank
overdosing
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Chong, Jeng Yi
Supervisor and department
Kresta, Suzanne (Chemical and Materials Engineering)
Examining committee member and department
Lipsett, Michael (Mechanical Engineering)
Rajendran, Arvind (Chemical and Materials Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2013-08-29T11:52:11Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
The impact of mixing on water removal from diluted bitumen and bitumen froth is studied, with the goal of maximizing demulsifier performance. The relative effects of bulk concentration, mixing intensity, mixing time and injection concentration on the demulsifier performance are evaluated. A Confined Impeller Stirred Tank (CIST) with a more uniform turbulence distribution and mixing field than a conventional stirred tank is used in the experiments. Mixing is as important as the bulk concentration at a bulk concentration close to the minimal requirement, and can avoid the “overdosing” problem at a very high bulk concentration. The total mixing energy, J, which combines mixing intensity and mixing time, is the first mixing variable and the injection concentration is the second key mixing variable. Mixing strategies developed from the diluted bitumen system were equally applicable to bitumen froth. Addition order affected the demulsifier performance.
Language
English
DOI
doi:10.7939/R39T19
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: Jeng Yi Chong
Page count: 135
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