C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/23
C10G 1/04 (2006.01)
Patent
CA 1117454
MEANS FOR REGULATING MIDDLINGS FLUID TO THE AIR SCAVENGING STEP OF A HOT WATER EXTRACTION PROCESS Abstract of the Disclosure A process for separating oil from bituminous sands which comprises: A) forming a mixture of the bituminous sands and water; B) passing the mixture into a separation zone; C) settling the mixture in the separation zone in the range of 130° to 210°F to form: an upper froth layer; a middlings layer comprising water, clay, and oil; and a sand tailings layer; D) separately removing from the separation zone the oil froth layer and the sand tailings layer; E) passing a stream of middlings from the middlings layer to a middlings storage zone; F) passing a stream of middlings from the middlings storage zone to a scavenger zone and therein recovering an additional amount of oil froth; and G) removing from the scavenger zone and discarding from the system middlings material of depleted oil content comprising clay dispersed in water.
316506
Gowling Lafleur Henderson Llp
Suncor Energy Inc. / Suncor Energie Inc.
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