Extraction process

Patent · Tue Aug 06 04:00:00 EDT 1985

OSTI ID:6502029

Dente, M; Porcari, G; Robinson, L F

Hydrocarbon liquids are recovered from oil shale and other solids containing organic matter by passing a liquid organic solvent downwardly through an extraction zone in contact with said solids at an elevated pressure sufficient to maintain said solvent in the liquid phase and at a temperature below about 900/sup 0/ F., preferably between about 650/sup 0/ F. and about 900/sup 0/ F., in order to extract hydrocarbons from the solids into the solvent. The extracted hydrocarbons are then recovered from the solvent by fractionation. Normally, heat is supplied to the extraction zone by passing a hot, nonoxidizing gas, preferably an oxygen-free gas generated within the process, downwardly through the extraction zone in cocurrent flow with the liquid organic solvent.

• Assignee: RTR Riotinto Til Holding S.A. (Switzerland)
• Patent Number(s): US 4533459
• OSTI ID: 6502029
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402 -- Oil Shales & Tar Sands-- Surface Methods
040900* -- Oil Shales & Tar Sands-- Waste management
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CLAYS
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUEL SLURRIES
FUELS
HOT-WATER PROCESSES
MANAGEMENT
MATERIALS
MIXTURES
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RECOVERY
RECYCLING
SEPARATION PROCESSES
SLURRIES
SUSPENSIONS
TAR
THERMAL RECOVERY
WASTE MANAGEMENT