Hydrocarbon solvent treatment of bituminous materials

Patent · Tue Nov 14 04:00:00 EST 1978

OSTI ID:6444981

Garwin, L

This invention relates to the production of oils of specified higher quality at the same yield or to the production of a higher yield of oils of the same quality from a bituminous material by a combination of propane and pentane deasphalting than would otherwise be obtainable by utilizing either propane or pentane deasphalting processes alone. This is effected by subjecting the bituminous material first to a pentane deasphalting process to produce a light fraction containing resins and oils, followed by a propane deasphalting process on the resin-oil fraction previously obtained and the recycle of at least a portion of the resins fraction back to the pentane deasphalting process. Alternatively, this is effected by subjecting the bituminous material first to a propane deasphalting process to produce a heavy fraction containing asphaltenes and resins, followed by a pentane deasphalting process on the asphaltene-resin fraction previously obtained and recycle of at least a portion of the resins fraction back to the propane deasphalting process. The oil thus produced is obtained in higher quality at the same yield or in higher yield at the same quality by virtue of the ability to cut deeper into the residuum than otherwise would be possible.

• Assignee: Kerr-McGee Refining Corp.
• Patent Number(s): US 4125459
• OSTI ID: 6444981
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
04 OIL SHALES AND TAR SANDS
040402 -- Oil Shales & Tar Sands-- Surface Methods
ALKANES
ASPHALTS
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
EXTRACTION
HYDROCARBONS
OIL YIELDS
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
OTHER ORGANIC COMPOUNDS
PENTANE
PROCESSING
PROPANE
REMOVAL
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
TAR
YIELDS