Tar sands extraction process

Details Tar sands extraction process Tar sands extraction process

1998-04-08

1999-11-16

Myers, Helane

Mineral oils: processes and products

Tar sand treatment with liquid

Inorganic liquid

208390, C10G 104

Patent

active

059851384

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

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Energy Resources Conservation Board, Alternative Bitumen Extraction Technologies for Mined Oil Sands, Aug. 30, 1982.
Stone, J.A., Hyndman, A.W., Clarke, J.E., Oil Sands Extraction: A Dynamic Technology, Session 2, Paper No. 6, U.S. Application 08/719,513.

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