Separation of tailings that include asphaltenes

Details Separation of tailings that include asphaltenes Separation of tailings that include asphaltenes

2011-08-16

2011-08-16

Caldarola, Glenn A (Department: 1771)

Mineral oils: processes and products

Tar sand treatment with liquid

C208S391000, C208S425000, C208S309000, C208S086000

Reexamination Certificate

active

07998342

ABSTRACT:
Various systems and methods are described that can be used as part of a process to separate bitumen from oil sands. The process may include adding a hydrocarbon solvent to a bitumen containing extract. The tailings from this process may contain a significant amount of solvent. The solvent may be recovered from the tailings with a tailings solvent recovery unit that utilizes negative pressure to significantly reduce the cost of the process in comparison to a conventional steam stripping unit. In one embodiment, the tailings may also separated prior to entering the tailings solvent recovery unit with a gravity separation apparatus or a cyclonic separation apparatus, such as a hydrocyclone.

REFERENCES:
patent: 2871180 (1959-01-01), Lowman, Jr. et al.
patent: 3159571 (1964-12-01), Reman et al.
patent: 3303122 (1967-02-01), Doelman
patent: 3779902 (1973-12-01), Mitchell et al.
patent: 4325818 (1982-04-01), Woodle
patent: 4539097 (1985-09-01), Kelterborn et al.
patent: 4572777 (1986-02-01), Peck
patent: 6007709 (1999-12-01), Duyvesteyn et al.
patent: 2004/0007500 (2004-01-01), Kresnyak
patent: 2004/0035755 (2004-02-01), Reeves
International Searching Authority “Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority” Feb. 5, 2009.

Affiliated with

Also associated with

Rating

Separation of tailings that include asphaltenes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation of tailings that include asphaltenes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of tailings that include asphaltenes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2648199