Process for the production of oxygen by adsorption with transatmospheric pressure variation

US6287366A · kind A · utility

Assignee

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

Inventors

• Nathalie Derive · Paris, FR
• Anne Dubois · Le Chesnay, FR
• Christian Monereau · Paris, FR

Key dates

• Filing date: Apr 7, 1999
• Grant date: Sep 11, 2001
• Expiry date: Apr 7, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B2210/007
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A repressurization phase of an adsorber comprises a step of first countercurrent repressurization with at least gas from a first co-current decompression of another adsorber, this phase ending in a step of co-current production. Immediately following the first countercurrent repressurization step, air is introduced co-current into the adsorber.