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Permanent link (DOI): https://doi.org/10.7939/R3T43JB1D

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Demulsifying Water-in-Bitumen Emulsions of Oil Sands Froth Treatment Open Access

Descriptions

Other title
Subject/Keyword
Emulsions
Demulsification
PEO-PPO Copolymers
FBRM
Oil Sands
Froth Treatment
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Chen, Liang
Supervisor and department
Xu, Zhenghe (Chemical & Material Engineering)
Examining committee member and department
Thundat, Thomas (Chemical & Material Engineering)
Xu, Zhenghe (Chemical & Material Engineering)
Zeng, Hongbo (Chemical & Material Engineering)
Department
Department of Chemical and Materials Engineering
Specialization
Chemical Engineering
Date accepted
2014-08-12T13:37:38Z
Graduation date
2014-11
Degree
Master of Science
Degree level
Master's
Abstract
The formation of stable water-in-oil emulsions during bitumen extraction poses problems for water separation from diluted bitumen, which leads to equipment corrosion and catalyst fouling in downstream operations. Demulsifiers are used to break the stable emulsions and assist the separation of water from diluted bitumen. To study the factors influencing demulsification, the efficiency of four industrial demulsifiers in dewatering of water-in-toluene diluted bitumen emulsions was probed at various temperatures. The ability of the demulsifiers to compete for the interface was assessed by measuring interfacial tension of the toluene diluted bitumen-water interface in the presence and absence of demulsifiers. Demulsification tests were conducted using two different methods. A dynamic method was used to allow in-situ and real-time observation of the demulsification process. A static method was used to probe water removal efficiency of the four demulsifiers by gravity to assist the understanding of the demulsifiers’ performance. In order to understand the impact of temperature on demulsification, the effect of temperature on the viscosity of the diluted bitumen was investigated and correlated to demulsification efficiency.
Language
English
DOI
doi:10.7939/R3T43JB1D
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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