期刊
JOURNAL OF SUPERCRITICAL FLUIDS
卷 77, 期 -, 页码 142-152出版社
ELSEVIER
DOI: 10.1016/j.supflu.2013.03.007
关键词
Water; Athabasca bitumen; Heavy hydrocarbon; Phase behavior; Near-critical; High temperature
资金
- Centre for Oil Sands Innovation (COSI)
- NSERC Industrial Research Chair in Petroleum Thermodynamics (Natural Sciences and Engineering Research Council of Canada (NSERC)
- Alberta Innovates Energy and Environment Solutions
- KBR Energy and Chemical
- Halliburton Energy Services
- Imperial Oil Resources
- ConocoPhillips Canada Resources Corp.
- Shell Canada Ltd.
- Nexen Inc.
- Virtual Materials Group (VMG)
- Total EP Canada Ltd.
- British Petroleum
Mixtures of hydrocarbons + water exhibit complex phase behaviors, and transitions in phase behavior classification also arise as hydrocarbon composition is varied. In this work, the phase behavior of Athabasca bitumen + water mixtures is reported, in the temperature range (522.1-644.0 K) and the pressure range (4.2-35.7 MPa). Pressure-temperature (at fixed composition) and pressure-composition (at fixed temperature) phase diagrams were prepared based on observations obtained using a view cell apparatus equipped with X-ray transmission tomography. Phase boundary and phase composition accuracy and precision were validated by reproducing phase diagrams for 1-methylnaphthalene + water and toluene + water mixtures available in the literature. The Athabasca bitumen + water pseudo-binary exhibits type Bib phase behavior, based on the van Konynenburg and Scott classification scheme, as the composition difference between the water rich and Athabasca bitumen rich liquid phases remain large and liquid-liquid-vapor phase behavior persists up to the critical temperature of water. The reported phase diagrams are expected to provide benchmark data needed to define operating conditions for hydrocarbon resource production and refining processes based on the addition or exploitation of sub critical and near critical water. (C) 2013 Elsevier B.V. All rights reserved.
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