Visbreaking yield enhancement by ultrafiltration

Details Visbreaking yield enhancement by ultrafiltration Visbreaking yield enhancement by ultrafiltration

2008-09-05

2010-11-23

Caldarola, Glenn A (Department: 1797)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S649000, C210S651000, C208S067000, C208S086000, C208S106000

Reexamination Certificate

active

07837879

ABSTRACT:
Ultrafiltration may be effectively used to produce visbreaker feeds of improved quality which enable the visbreaker to be operated at higher severity with higher yields of distillable products. A heavy oil feed stream is separated by ultrafiltration or membrane separation into a permeate fraction and a retentate fraction by contacting the heavy oil feed with the first side of a porous membrane separation element in a membrane separation zone. The permeate fraction, comprised of materials which pass selectively through the porous membrane element, is retrieved and at least a portion of it is subjected to visbreaking with the improved liquid yield, especially of lighter distillate fractions. The retentate fraction can be retrieved from the first side of the porous membrane and can also be subjected to visbreaking.

REFERENCES:
patent: 4615791 (1986-10-01), Choi et al.
patent: 4797200 (1989-01-01), Osterhuber
patent: 5256297 (1993-10-01), Feimer et al.
patent: 5430224 (1995-07-01), Schucker
patent: 5785860 (1998-07-01), Smith
patent: 6187987 (2001-02-01), Chin et al.
patent: 6524469 (2003-02-01), Schucker
patent: 2003/0019790 (2003-01-01), Schucker
Gary, J.H. et al. (2007). Petroleum Refining Technology and Economics, 5thed., CRC Press, 465 pgs. (Office action cited p. 121).
PCT International Search Report, Oct. 30, 2009.
PCT Written Opinion, Oct. 30, 2009.

Affiliated with

Also associated with

Rating

Visbreaking yield enhancement by ultrafiltration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Visbreaking yield enhancement by ultrafiltration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Visbreaking yield enhancement by ultrafiltration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4161733