New supercritical solvent mixtures have been laboratory-tested for extraction of oil from tar sands. Mixture is circulated through sand at high pressure and at a temperature above critical point, dissolving organic matter into the compressed gas. Extract is recovered from sand residues. Low-temperature super-critical solvents reduce energy consumption and waste-disposal problems.
Supercritical-Fluid Extraction of Oil From Tar Sands
NASA Tech Briefs ; 6 , 2
1982-11-01
Miscellaneous
No indication
English
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