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Intermediate Pressure Column in Air Separation

IP.com Disclosure Number: IPCOM000019394D
Publication Date: 2003-Sep-12

Publishing Venue

The IP.com Prior Art Database

Abstract

An additional column is introduced to a standard two-column (or three-column in case of argon recovery) air separation unit. This column operates at a pressure between the high pressure and low pressure column pressures and separates low pressure column feed streams: oxygen-rich liquid and/or liquid air into oxygen-enriched liquid and nitrogen-enriched vapor.