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Solvent-assisted extraction, Bitumen viscosity, Bitumen recovery

Zhang, Mei

Supervisor and department: Masliyah, Jacob Department of Chemical and Materials Engineering Xu, Zhenghe Department of Chemical and Materials Engineering

Examining committee member and department: Xu, Zhenghe Department of Chemical and Materials Engineering Babadagli, Tayfun Civil and Environmental Engineering Masliyah, Jacob Department of Chemical and Materials Engineering

Department: Department of Chemical and Materials Engineering

Specialization:

Date accepted: 2012-01-27T14:50:03Z

Graduation date: 2012-06

Degree: Master of Science

Degree level: Master's

Abstract: Viscosity, as a fundamental physical property of bitumen, has been studiedextensively for the past several decades. By and large, nearly all the bitumensamples used in viscosity measurement were from hot water extraction processesthat were further cleaned by solvents. A drawback of this approach is inevitablyincomplete evaporation of solvent or losses of light ends of bitumen. Such a gainor loss can have a significant influence on the measured bitumen viscosity. Toaccurately understand the role of bitumen viscosity in bitumen recovery bywater-based extraction processes, viscosity measurement of raw solvent-freebitumen is necessary.In this study, bitumen samples from good ore, artificially weathered good ore,average ore, and naturally weathered poor processing ore were prepared throughdirect centrifugation method. The viscosity of isolated bitumen at differenttemperatures and with different solvent kerosene and naphtha additions wasmeasured. A correlation between solvent addition and temperature wasestablished via viscosity measurements. Based on correlations established in thisstudy, processability of oil sands was evaluated to identify the critical role ofbitumen viscosity.

Language: English

DOI: doi:10.7939-R3M69X

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.





Autor: Zhang, Mei

Fuente: https://era.library.ualberta.ca/


Introducción



University of Alberta Role of Bitumen Viscosity in Bitumen Recovery from Athabasca Oil Sands by Mei Zhang A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Chemical Engineering Department of Chemical and Materials Engineering ©Mei Zhang Spring 2012 Edmonton, Alberta 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 authors prior written permission. This thesis is dedicated to my parents. Abstract Viscosity, as a fundamental physical property of bitumen, has been studied extensively for the past several decades.
By and large, nearly all the bitumen samples used in viscosity measurement were from hot water extraction processes that were further cleaned by solvents.
A drawback of this approach is inevitably incomplete evaporation of solvent or losses of light ends of bitumen.
Such a gain or loss can have a significant influence on the measured bitumen viscosity.
To accurately understand the role of bitumen viscosity in bitumen recovery by water-based extraction processes, viscosity measurement of raw (solvent-free) bitumen is necessary. In this study, bitumen samples from good ore, artificially weathered good ore, average ore, and naturally weathered poor processing ore were prepared through direct centrifugation method.
The viscosity of isolated bitumen at different te...





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