Gas separation: processes – Selective diffusion of gases – Selective diffusion of gases through substantially solid...
Reexamination Certificate
2006-02-01
2008-11-18
Greene, Jason M (Department: 1797)
Gas separation: processes
Selective diffusion of gases
Selective diffusion of gases through substantially solid...
C095S049000, C095S050000, C096S004000, C096S007000, C096S009000, C096S011000, C210S640000, C210S641000, C210S649000, C208S20800M, C208S220000, C585S818000
Reexamination Certificate
active
07452404
ABSTRACT:
A process and system for separating a fuel stream containing a low concentration of sulfur compounds from a primary fuel stream is disclosed. The process includes isolating a stage-one permeate stream and a stage-one retentate stream from the primary fuel stream, evaporating the stage-one permeate stream at a vacuum, and isolating a stage-two permeate stream and a stage-two retentate stream from the stage-one permeate stream. The stage-two retentate stream is a fuel stream containing low concentrations of sulfur compounds. The system includes a fuel supply, a stage-one separator for separating a fuel stream into a stage-one permeate stream and a stage-one retentate stream, a stage-two separator, a first supply line connecting a portion of the fuel supply to the stage-one separator, and a second supply line connecting the stage-one separator permeate stream to the stage-two separator. The stage-two separator isolates the stage-one separator permeate stream into a stage-two permeate stream and a stage-two retentate stream.
REFERENCES:
patent: 4978439 (1990-12-01), Carnell et al.
patent: 5256296 (1993-10-01), Baker et al.
patent: 6187987 (2001-02-01), Chin et al.
patent: 6197091 (2001-03-01), Ji et al.
patent: 6649061 (2003-11-01), Minhas et al.
patent: 6702945 (2004-03-01), Saxton et al.
patent: 6755975 (2004-06-01), Vane et al.
patent: 6896796 (2005-05-01), White et al.
patent: 6899743 (2005-05-01), Wijmans et al.
patent: 7018527 (2006-03-01), White et al.
patent: 7041212 (2006-05-01), White et al.
patent: 7048846 (2006-05-01), White et al.
patent: 2002/0139713 (2002-10-01), Plummer et al.
patent: 2003/0010205 (2003-01-01), Bikson et al.
patent: 2005/0067323 (2005-03-01), Balko
Balko, Jeff, et al., “Membrane Separation for Producing ULS Gasoline,” PTQ, Spring 2003.
Ito, Eri and Van Veen, J.A. Rob, “On Novel Processes for Removing Sulphur from Refinery Streams,” Catalysis Today, 2006, Elsevier, The Netherlands.
Zhao, Xinjin, et al., “Membrane Separation for Clean Fuels,” PTQ, Summer 2004.
Duraiswamy Kandaswamy
Woods Richard Root
Greenberg & Traurig, LLP
Greene Jason M
Intelligent Energy, Inc.
Krietzman Mark H.
Wahl John
LandOfFree
Multi-stage sulfur removal system and process for an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-stage sulfur removal system and process for an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-stage sulfur removal system and process for an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4037527