Intermediate Pressure Column in Air Separation
Publication Date: 2003-Sep-12
The IP.com Prior Art Database
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.