Secondary froth wash. [Oil Sand Processing]

Patent · Tue Jun 12 04:00:00 EDT 1973

OSTI ID:6883747

Kaminsky, V P

A process is described for the removal of bitumen from secondary froth formed during the hot-water processing of Athabasca tar sands. More particularly, the process utilizes the intimate contacting of a hot water wash with a secondary froth and subsequent intimate contacting of the bitumen with the fresh hot water. The amount of solids in a secondary froth is reduced to a level which is economical by subjecting the secondary froth to this water-washing operation wherein the froth is deaerated, collapsed, and subjected to intimate contacting with fresh hot water. The contacting causes the bitumen contained within the froth to allow the release of the solids entrained within the bitumen, the water to separate from the bitumen, and the recovery of bitumen from the secondary froth. (6 claims)

• Assignee: Canada Cities Service Ltd.; Imperial Oil Ltd; Atlantic Richfield Can. Ltd.; Gulf Oil Canada Ltd.
• Patent Number(s): US 3738930
• OSTI ID: 6883747
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
ALBERTA
ATHABASCA DEPOSIT
BITUMENS
BITUMINOUS MATERIALS
CANADA
CARBONACEOUS MATERIALS
ENERGY SOURCES
FLUID INJECTION PROCESSES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HOT-WATER PROCESSES
MATERIALS
NORTH AMERICA
OIL SAND DEPOSITS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PROCESSING
RECOVERY
TAR