Method of treating a gas mixture comprising propane and propylene

US7497896B2 · kind B2 · utility

Assignee

• L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Étude et l'Exploitation des Procédés Georges Claude · FR

Inventors

• Emmanuelle Bromet · Rueil-Malmaison, FR
• Guillaume De Souza · Issy-les-Moulineaux, FR
• Olivier Riu · Paris, FR

Key dates

• Filing date: Apr 7, 2004
• Grant date: Mar 3, 2009
• Expiry date: Jul 10, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/06
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Methods for treating a gas mixture of at least propylene and propane, in order to separate the propylene from the propane. The gas mixture is brought into contact with a membrane enables the selective permeation of the propylene with respect to the propane. A propylene-enriched permeate and a propane-enriched retentate is formed. The propylene concentration of the permeate in the membrane is then reduced with a sweeping gas.