Primary froth recycle

Details Primary froth recycle Primary froth recycle

2008-06-27

2011-11-22

Caldarola, Glenn (Department: 1771)

Mineral oils: processes and products

Tar sand treatment with liquid

C208S391000

Reexamination Certificate

active

08062511

ABSTRACT:
A process for extracting bitumen from oil sand, comprising: mixing oil sand with process water to produce an oil sand slurry containing bitumen, sand, water and entrained air; conditioning the oil sand slurry; optionally flooding the conditioned oil sand slurry with flood water to dilute the slurry, if required; introducing the slurry into a primary separation vessel wherein separate layers of primary bitumen froth, middlings and sand tailings are formed; removing a portion of the primary bitumen froth from the primary separation vessel and recycling the portion of primary bitumen froth to that step of the process upstream of the primary separation vessel to join and mix with the feed stream moving to the primary separation vessel; and thereafter retaining said feed stream in said primary separation vessel to produce primary bitumen froth.

REFERENCES:
patent: 4116809 (1978-09-01), Kizior
patent: 4776949 (1988-10-01), Leung et al.
patent: 5039227 (1991-08-01), Leung et al.
patent: 5264118 (1993-11-01), Cymerman et al.
patent: 6007708 (1999-12-01), Allcock et al.
patent: 2006/0249431 (2006-11-01), Cymerman et al.
patent: 2029795 (1991-05-01), None
patent: 2195604 (1998-07-01), None
patent: 2217623 (1999-04-01), None
patent: 2263858 (2000-02-01), None
patent: 2480122 (2006-01-01), None

Affiliated with

Also associated with

Rating

Primary froth recycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Primary froth recycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Primary froth recycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4279829