Method and apparatus for the solvent extraction of oil from bitumen containing tar sand

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Publication Type patent
Research Institute Institute for Clean and Secure Energy (ICSE)
Other Author Rosenbloom, William J.
Title Method and apparatus for the solvent extraction of oil from bitumen containing tar sand
Date 1996-07-09
Description A method and apparatus for extracting bitumen whereby tar sand containing bitumen components is contacted with a heated thinning oil mixture to reduce the tar sand viscosity and dissolve bitumen to form a lower viscosity feed slurry. The feed slurry is contacted with a light oil in a separator wherein the mixture is separated into product oil and oil sand. The oil sand is washed with solvent in a countercurrent fashion to extract occluded oil to form the light oil. Washed sand containing solvent is heated above the boiling point of the solvent in a multi-hearth solvent recovery furnace to vaporize the solvent. The solvent vapors are stripped from the sand by flowing inert gas through the sand in the multi-hearth solvent recovery furnace. Inert gas containing solvent vapors is directed from the multi-hearth solvent recovery furnace to a heat exchanger/scrubber where the inert gas and solvent vapors are contacted with product oil from the separator. The solvent vapors are absorbed by the product oil to form the heated thinning oil mixture which is contacted with the tar sand. The resulting thinning oil temperature is greater than the product oil due to heat transfer from the solvent vapors and inert gas. Inert gas is recycled from the heat exchanger/scrubber back to the multi-hearth solvent recovery furnace.
Type Text
Publisher United States Patent and Trademark Office
Subject solvent extraction of oil; tar sand bitumen; patent
Language eng
Bibliographic Citation Rosenbloom, W. J. (1996). Method and apparatus for the solvent extraction of oil from bitumen containing tar sand. United States Patent and Trademark Office. United States Patent 5,534,136.
Relation Has Part United States Patent 5,534,136.
Rights Management (c)United States Patent and Trademark Office
Format Medium application/pdf
Format Extent 57,139 bytes
Identifier ir-eua/id/3052
Source DSpace at ICSE
ARK ark:/87278/s6gq9wwx
Setname ir_eua
Date Created 2013-05-15
Date Modified 2021-05-06
ID 214111
Reference URL https://collections.lib.utah.edu/ark:/87278/s6gq9wwx
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