The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 07, 2001
Filed:
Dec. 29, 1998
Applicant:
Inventors:
Cyrille Millet, Paris, FR;
Philippe Bourgeois, Paris, FR;
Georges Kraus, Paris, FR;
Jean-Pierre Gabillard, Auffargis, FR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 5/347 ; B01D 5/326 ;
U.S. Cl.
CPC ...
B01D 5/347 ; B01D 5/326 ;
Abstract
Process for separating at least carbon dioxide (CO,) contained in a gas stream, preferably air, in which at least carbon dioxide is adsorbed on a zeolite-X having a Si/Al ratio of approximately 1 to 1.5 and containing at most 35% of K,cations, between 1 and 99% of Na,cations and at most 99% of Ca,cations. This process is carried out at a temperature ranging from −40° C. to +80° C. Optionally, impurities chosen from water vapour and hydrocarbons, particularly ethylene, are also removed. The air thus purified is then capable of being cryogenically distilled.