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:
Dec. 25, 2001
Filed:
Nov. 08, 1999
Dominique Rouge, Malakoff, FR;
Stephane Chantagrel, Cruviers Lascours, FR;
Lian-Ming Sun, Palaiseau, FR;
Celine Graciannette, Versailles, FR;
Yves Torre, Magny Les Hameaux, FR;
Abstract
A PSA, especially VSA, plant for separating a gas stream, operating in a production cycle and comprising at least one adsorber, preferably two or three adsorbers, and several valves having long and heterogeneous operating times. More specifically, the average operating time (&mgr;) of the valves is such that: 0.5 s<&mgr;<2 s and the operating time (&Dgr;t) of each of the valves is such that: &mgr;−x<&Dgr;t<&mgr;+x, with 0.1 s<x<0.5 s. The invention also relates to the use of such a PSA plant for producing a gas stream rich in oxygen, in nitrogen or in hydrogen, particularly a stream comprising more than 80% oxygen, which is then sent to an oxygen-consuming plant chosen from a combustion furnace, a paper-pulp manufacturing unit and a water treatment unit.