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:
Jun. 05, 2001
Filed:
Feb. 14, 2000
Georges Kraus, Paris, FR;
Patrick Le Bot, Vincennes, FR;
Alain Guillard, Paris, FR;
Philippe Fraysse, Fontenay-aux-Roses, FR;
Abstract
A plant and a process for the purification and cryogenic separation of air containing impurities, which process is carried out according to the steps of (a) compressing the air; (b) introducing the air compressed in step (a) into one or more adsorption vessels containing particles of adsorbent without, beforehand, precooling the air; (c) adsorbing the impurities (CO,, H,O, NOx, SOx, etc) contained in the air on the particles of adsorbent at room temperature and at a pressure of at least 11.4 bar, preferably ranging from 20.1 to 40 bar; (d) cooling the air purified in step (c) down to a cryogenic temperature; and (e) cryogenically distilling the cooled air in order to produce nitrogen, oxygen, argon or mixtures thereof.