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Permanent link (DOI): https://doi.org/10.7939/R3QF0V

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On mixing and demulsifier performance in oil sands froth treatment Open Access

Descriptions

Other title
Subject/Keyword
clarification
demulsifier
froth treatment
water
oil sands
dispersion
settling
mixing
oil
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Laplante, Patrick Georges
Supervisor and department
Kresta, Suzanne (Chemical and Materials Engineering)
Examining committee member and department
Liu, Qingxia (Chemical and Materials Engineering)
Buchanan, Ian (Civil and Environmental Engineering)
Department
Department of Chemical and Materials Engineering
Specialization

Date accepted
2011-09-29T05:30:40Z
Graduation date
2011-11
Degree
Master of Science
Degree level
Master's
Abstract
The impact of mixing on diluted bitumen de-watering is studied in two stages using a fractional factorial design of experiments. The first stage evaluates the relative effects of bulk demulsifier dosage, local maximum energy dissipation, and mixing time. The second stage of experiments evaluates the relative effects of bulk demulsifier dosage, local maximum energy dissipation, mixing time, and the injection concentration of the demulsifier. Shaker table results did not compare well with results obtained using a stirred tank. A shear and sedimentation test cell (SSTC) is designed to conduct mixing and settling in the same vessel while providing a large ratio of impeller volume to tank volume. The bulk concentration of demulsifier is the dominant effect, but favourable levels of local maximum energy dissipation, mixing time, and injection concentration are necessary to optimize demulsifier performance. Solids removal is shown to be a function of water removal.
Language
English
DOI
doi:10.7939/R3QF0V
Rights
License granted by Patrick Laplante (pl12@ualberta.ca) on 2011-09-23T19:05:52Z (GMT): 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 the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein 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 title: On Mixing and Demulsifier Performance in Oil Sands Froth Treatment
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