Extraction of hydrocarbon-containing solids

Patent · Tue Jan 17 04:00:00 EST 1989

OSTI ID:6312529

Ho, P N

A process is described for recovering hydrocarbon liquids from oil shale solids which comprises: (a) heating the solids in a nonoxidizing atmosphere to a temperature between about 550/sup 0/F and about 900/sup 0/F in the absence of an added liquid organic solvent to produce heat treated oil shale solids; (b) extracting hydrocarbons from the heat treated oil shale solids by contacting the solids in an extraction zone with a liquid organic solvent passed downwardly through the heat treated oil shale solids in such quantities that the solvent trickles through the solids so that there is a discontinuous liquid phase in contact with the solids through the entire extraction zone; and (c) recovering the extracted hydrocarbons from the liquid organic solvent as the hydrocarbon liquids.

• Assignee: Union Oil Co. of Calif., Los Angeles, CA
• Patent Number(s): US 4798668
• OSTI ID: 6312529
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
HYDROCARBONS
MATERIALS
MINERAL OILS
OIL SHALES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RECOVERY
SEPARATION PROCESSES
SHALE OIL
SOLIDS
SOLVENT EXTRACTION
SOLVENTS