Separation cell and scavenger cell froths treatment
Patent
·
OSTI ID:5704854
In the hot-water process for treating bituminous tar sands, an improvement consists of (1) diluting the primary froth with a hydrocarbon diluent miscible with the bitumen in the primary froth and capable of lowering its specific gravity; (2) settling the diluted froth to produce an upper overflow layer comprising bitumen-diluent and a lower underflow layer comprising sand, mineral, and water; (3) separately removing the upper overflow bitumen-diluent layer and the lower underflow layer; (4) subjecting the secondary bitumen froth with or without prior settling to a centrifuging operation to recover a bitumen product stream reduced in mineral content compared to the bitumen product layer; and (5) removing the bitumen product stream from Step (4) and combining it with the upper overflow bitumen-diluent layer from Step (3) to form a mixture suitable for further upgrading. (5 claims)
- Assignee:
- Gr. Canadian Oil Sands Ltd.
- Patent Number(s):
- CA 873854
- OSTI ID:
- 5704854
- 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
CENTRIFUGATION
COLLOIDS
DENSITY
DILUTION
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION PROCESSES
FOAMS
FOSSIL FUELS
FUELS
HOT-WATER PROCESSES
MATERIALS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
RECOVERY
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
TAR
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CENTRIFUGATION
COLLOIDS
DENSITY
DILUTION
DISPERSIONS
ENERGY SOURCES
ENHANCED RECOVERY
FLUID INJECTION PROCESSES
FOAMS
FOSSIL FUELS
FUELS
HOT-WATER PROCESSES
MATERIALS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
RECOVERY
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
SEPARATION PROCESSES
TAR