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Method for treating shale

Patent ·
OSTI ID:5835402
;
A method is described for treating oil shale containing kerogen comprising treating oil shale with a first aqueous caustic treating solution at a temperature in the range of from about 140/sup 0/C to 200/sup 0/C under treating conditions sufficient to transform minerals present in the oil shale into extractable forms to produce a shale product of transformed mineral content; treating the shale product with an aqueous acid solution to produce a first kerogen concentrate; and treating the first kerogen concentrate with a second aqueous caustic solution to produce a second kerogen concentrate of low ash content.
Assignee:
Standard Oil Co., Chicago, IL
Patent Number(s):
US 4584088
OSTI ID:
5835402
Country of Publication:
United States
Language:
English

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Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
AQUEOUS SOLUTIONS
ASH CONTENT
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
DISPERSIONS
DISSOLUTION
ENERGY SOURCES
ENHANCED RECOVERY
EXTRACTION
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
KEROGEN
MATERIALS
MIXTURES
OIL SHALES
ORGANIC MATTER
RECOVERY
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
THERMAL RECOVERY