Solvent extraction process for recovering bitumen from tar sand

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Publication Type patent
Author Hsieh, C. Richard; Clifford, Roger K.
Title Solvent extraction process for recovering bitumen from tar sand
Date 1987-06-30
Description Bitumen recovered from tar sand by direct solvent extraction followed by washing of the sand tailings with countercurrent solvent flow and a solvent/aqueous phase separation step to recover solvent and residual bitumen.
Publisher United States Patent and Trademark Office
Subject solvent extraction process; bitumen recovery; tar sand; patent; direct solvent extraction; solvent bitumen recovery; residual bitumen
Bibliographic Citation Hsieh, C. R., Clifford, R. K. (1987). Solvent extraction process for recovering bitumen from tar sand. United States Patent 4,676,889. United States Patent and Trademark Office.
Relation Has Part United States Patent 4,676,889
ARK ark:/87278/s6pg4qvz
Setname ir_eua
Date Created 2015-02-17
Date Modified 2021-05-06
ID 214451
Reference URL https://collections.lib.utah.edu/ark:/87278/s6pg4qvz
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