Process and apparatus for drying and compressing a CO2-rich stream

US9234698B2 · kind B2 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Alain Briglia · Corzé, FR
• Philippe Court · Houston, US
• Arthur Darde · Paris, FR

Key dates

• Filing date: Jun 10, 2011
• Grant date: Jan 12, 2016
• Expiry date: Aug 22, 2032

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2257/404
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for compressing a CO2-rich fluid containing water. The CO2-rich fluid is compressed in a compressor; upstream of the compression step, an antifreeze is mixed with the CO2-rich fluid containing water. The CO2-rich fluid containing antifreeze is cooled, water is separated from the cooled fluid and the water-depleted cooled fluid is compressed in the compressor, wherein the CO2-rich fluid containing water is sent to a scrubbing column fed, preferably at the top, with a water/antifreeze mixture, where it cools and is separated from the water, the water-depleted cooled fluid is extracted from the top of the column; a water/antifreeze mixture in the column is extracted at a level below the top; the mixture is cooled using the refrigeration from an apparatus for cooling and/or purifying the cooled fluid compressed in the compressor and the fluid is returned to the top of the column.