Title: Process and device in connection with the production of oxygen or oxygen enriched air
Application Number: 02820180 Application Date: 2002.09.23
Publication Number: 1568287 Publication Date: 2005.01.19
Approval Pub. Date: 2006.12.27 Granted Pub. Date: 2006.12.27
International Classifi-cation: C01B13/02
Applicant(s) Name: Ifoe Ceramics Aktiebolag Address:
Inventor(s) Name:
Attorney & Agent: tao fengbei hou yu
Abstract:
     Process in connection with the production of oxygen (22), wherein incoming air (10, 16, 16a, 16b) is brought to pass through a sorbent/zeolite structure (18), which comprises at least three zeolite units (50a-f) intermittently operated in first stage comprising adsorption of nitrogen from the air and a second stage comprising desorption of thus adsorbed nitrogen. At least two of said zeolite units are operated in said adsorption stage, said incoming air being brought to pass consecutively (53a) through said at least two zeolite units to form an increasing nitrogen gradient; and/or at least two of said zeolite units are operated in said desorption stage, a pressure being released and/or a desorbing gas (22a, 22b) being brought to pass consecutively (53b) through said at least two zeolite units to form a decreasing nitrogen gradient in the zeolite units.
Time: 5