Cyclic membrane separation process

Patent · Tue Apr 13 00:00:00 EDT 2004

OSTI ID:1174805

Bowser, John

A cyclic process for controlling environmental emissions of volatile organic compounds (VOC) from vapor recovery in storage and dispensing operations of liquids maintains a vacuum in the storage tank ullage. In one of a two-part cyclic process ullage vapor is discharged through a vapor recovery system in which VOC are stripped from vented gas with a selectively gas permeable membrane. In the other part, the membrane is inoperative while gas pressure rises in the ullage. Ambient air is charged to the membrane separation unit during the latter part of the cycle.

• Research Organization: CMS Technology Holdings, Inc., Wilmington, DE (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-00ER82976
• Assignee: CMS Technology Holdings, Inc. (Wilmington, DE)
• Patent Number(s): 6,719,824
• Application Number: 10/350,867
• OSTI ID: 1174805
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY