Recovery of a gaseous component from a mixture of gaseous compounds

US8512441B2 · kind B2 · utility

Assignees

• The South African Nuclear Energy Corporation Limited · ZA
• North-West University · ZA

Inventors

• Johannes Theodorus Nel · Kempton Park, ZA
• Izak Jacobus Van Der Walt · Krugersdorp, ZA
• Alfred Teo Grunenberg · Krugersdorp, ZA
• Odolphus Simon Leo Bruinsma · Potchefstroom, ZA
• Marco Le Roux · Potchefstroom, ZA
• Henning Manfred Krieg · Potchefstroom, ZA
• Sanette Marx · Potchefstroom, ZA

Key dates

• Filing date: Jul 6, 2009
• Grant date: Aug 20, 2013
• Expiry date: Jan 20, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02C20/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for recovering a gaseous component comprising at least one fluorine-containing compound from a mixture of gaseous compounds. The process includes, in a separation zone (12), bringing a mixture of gaseous constituents, including at least one fluorine-containing constituent, into contact with a gas permeable separating medium (16) comprising a polymeric compound, so that a first gaseous component comprising at least one fluorine-containing constituent is separated from a second gaseous component comprising the balance of the gaseous constituents. The first gaseous component is withdrawn from the separation zone as a permeate (34) or a retentate, while the second gaseous component is withdrawn from the separation zone as the retentate (26), when the first gaseous component is withdrawn as the permeate, and as the permeate, when the first gaseous component is withdrawn as the retentate.