Patent ID: 7452404
Filing Date: 2008-11-18
Classification: B01D,C10G,H01M,Y02E

Abstract:
1. A process for producing an auxiliary fuel stream containing a low concentration of sulfur compounds from a primary fuel stream, the process comprising: passing a portion of a primary fuel stream through a first separation stage comprising isolating a stage-one permeate stream and a stage-one retentate stream from the portion of the primary fuel stream; and passing the stage-one permeate stream through a second separation stage comprising isolating a stage-two permeate stream and a stage-two retentate stream from the stage-one permeate stream wherein the stage-two retentate stream constitutes an auxiliary fuel stream containing low concentration of sulfur compounds, wherein the stage-one retentate stream and said stage-two permeate stream are mixed and returned to the primary fuel stream.