Restoration of light hydrocarbon gases to tar sand
Patent
·
OSTI ID:5823897
Bitumen is recovered from bituminous sand by forming a slurry of bituminous sand and water in a gaseous hydrocarbon atmosphere. The aqueous slurry, which contains entrained and dissolved gaseous hydrocarbons, is then introduced into a body of hot water so that bitumen rises to the top in the form of a bituminous emulsion while sand settles to the bottom. The gaseous hydrocarbon atmosphere is preferably maintained throughout the process, and between about 0.05 and about 5% by wt hydrocarbon gas, based upon bitumen content of the slurry, is preferably contained in the slurry. (7 claims)
- Assignee:
- Cities Serv Athabasca Inc.
- Patent Number(s):
- US 3574086
- OSTI ID:
- 5823897
- 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
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
FLOTATION
FLUIDS
FOSSIL FUELS
FUELS
MATERIALS
MIXTURES
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RECOVERY
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SLURRIES
SUSPENSIONS
TAR
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
COLLOIDS
DISPERSIONS
EMULSIONS
ENERGY SOURCES
FLOTATION
FLUIDS
FOSSIL FUELS
FUELS
MATERIALS
MIXTURES
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
RECOVERY
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SLURRIES
SUSPENSIONS
TAR