Process for krypton an xenon extraction

US6063353A · kind A · utility

Assignee

• Linde GmbH · DE

Inventors

• Karl Baur · Baierbrunn, DE
• Michael Huala · Munich, DE
• Ralph Spöri · Öhnböck, DE

Key dates

• Filing date: Mar 4, 1998
• Grant date: May 16, 2000
• Expiry date: Mar 4, 2018

Classification

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

Abstract

Krypton and/or xenon are extracted from a krypton-xenon concentrate by means of distillation, for example, a krypton-xenon concentrate obtained from a low-temperature air separation unit. To remove fluorine- and/or chlorine-containing contaminants, especially fluorocarbons, CF.sub.4 and/or SF.sub.6, the krypton-xenon concentrate, a krypton stream and/or a xenon stream are purified in a solid sorbent that contains phyllosilicates.