Tar sands extraction process

Details Tar sands extraction process Tar sands extraction process

1996-09-25

1998-06-23

Wood, Elizabeth D.

Mineral oils: processes and products

Tar sand treatment with liquid

Inorganic liquid

C10G 104

Patent

active

057700494

ABSTRACT:
A hot water extraction process for extracting bitumen from tar sands is taught using a conditioning agent containing an alkali metal bicarbonate and an alkali metal carbonate. A source of calcium and/or magnesium ions can also be added. The conditioning agent replaces the caustic soda agent previously used in tar sand extraction. The use of the alkali metal bicarbonate and carbonate substantially eliminates the production of sludge in tar sand extraction and maintains or improves bitumen recovery. The process allows for hot conditioning agent solution to be recycled to the process by use of a recycle storage tank.

REFERENCES:
patent: 3951778 (1976-04-01), Willard
patent: 4120777 (1978-10-01), Globus
patent: 4929341 (1990-05-01), Thirumalachar
patent: 4968413 (1990-11-01), Datta
patent: 5626743 (1997-05-01), Humphreys
"Oil Sands Extraction: A Dynamic Technology" J.A. Stone et. al. 1989-1990 No Month Available.
"Alternative Bitumen Extraction Technologies For Mined Oil Sand" Dynawest Projects Ltd. 1982 (table of contents and Pertinent Sections) No Month Available.

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