Process for purifying inert fluids by adsorption on LSX zeolite

US6083301A · kind A · utility

Assignee

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

Inventors

• Daniel Gary · Montigny-le-Bretonneux, FR
• Rene Lardeau · Longjumeau, FR

Key dates

• Filing date: Dec 3, 1998
• Grant date: Jul 4, 2000
• Expiry date: Dec 3, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P30/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process for purifying an inert fluid, in particular argon or helium, with respect to at least one of its impurities nitrogen (N.sub.2), oxygen (O.sub.2), carbon dioxide (CO.sub.2), carbon monoxide (CO) and hydrocarbons, in which at least some of the impurities are removed using a first adsorbent of the X zeolite type having a silica to aluminum ratio less than or equal to 1.15, and a purified inert fluid containing at most 10 ppb, preferably at most 1 ppb of impurities is recovered.