Method and apparatus for separation of heterogeneous phases
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United States of America Patent
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Sep 4, 1990
Issued Date -
N/A
app pub date -
Mar 8, 1989
filing date -
May 6, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a process for extracting bitumen from oil sands. The process includes the step of conditioning the oil sands by adding hot water and steam to the oil sands. The conditioned oil sands are then introduced into a separation zone. Separation of the oil sands into a bitumen froth phase, a middlings phase and a tailings phase occurs in the separation zone. Water with air dissolved therein is continuously injected under pressure upwardly through the separation zone. The water is at a low temperature relative to the oil sands. At least two of the phases are then separately withdrawn from the separation zone.
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