Method and apparatus for the treatment of tar sand froth

Patent · Tue Jul 08 04:00:00 EDT 1975

OSTI ID:6886139

Canevari, G P

A method of separating bitumen from bitumen-coated tar sand is described. A tar sand froth is formed by contacting and agitating the coated particles with a hot liquid. The particles of the froth are separated from the bitumen by centrifuging the froth in a disk-recycling type of centrifuge apparatus which provides a relatively light overflow effluent and a relatively heavier underflow effluent where the underflow effluent of the centrifuge is fed back to an input of the centrifuge to a return flow path. A liquid-wetting transfer agent is combined with the underflow effluent in the return flow path to provide better separating characteristics. A disk recycling type of centrifuge apparatus includes means for converting the flow direction of the recycled underflow and causing the recycled underflow to self impact. (10 claims)

• Assignee: Exxon Research and Eng Co.
• Patent Number(s): US 3893907
• OSTI ID: 6886139
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMENS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CENTRIFUGATION
COLLOIDS
DISPERSIONS
ENERGY SOURCES
FOAMS
FOSSIL FUELS
FUELS
MATERIALS
OIL SANDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SEPARATION PROCESSES
SURFACTANTS
TAR