Bitumen-deaeration process carried out in the separation cell

Details Bitumen-deaeration process carried out in the separation cell Bitumen-deaeration process carried out in the separation cell

C - Chemistry, Metallurgy

10

G

196/19

C10G 1/04 (2006.01)

Patent

CA 1137906

WOOD S-77-085 INVENTOR: WOOD, ROY 80, Hill Drive Fort McMurray, Alberta, Canada T9H 2A4 "BITUMEN-DEAERATION PROCESS CARRIED OUT IN THE SEPARATION CELL" ABSTRACT OF THE DISCLOSURE The hot water process for extracting bitumen from tar sands is modified to directly produce a deaerated bitumen in the separation cell. Five to sixty parts per million (of the bitumen contained in the tar sand) by weight of a commercial defoamer is added to the tar sands on a conveyor belt as it flows into the conditioning drum. As a result, the froth de- aerates in the separation cell and becomes pumpable by cen- trifugal pumps without further treatment. Optionally, the defoamer can be added after the conditioning step in the feed to the separation cell or to the froth launder itself as well as to scavenger units which may be employed in the process.

338510

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