Gas separation: apparatus – Solid sorbent apparatus – Plural solid sorbent beds
Reexamination Certificate
2006-04-18
2006-04-18
Spitzer, Robert H. (Department: 1724)
Gas separation: apparatus
Solid sorbent apparatus
Plural solid sorbent beds
C095S130000, C096S130000, C096S146000, C096S153000, C096S154000
Reexamination Certificate
active
07029521
ABSTRACT:
Process in conjunction 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 a first stage comprising adsorption of nitrogen from the air and a second stage comprising desorption (20, 20a, 20b) of thus adsorbed nitrogen. At least two of the zeolite units are operated in the adsorption stage, the incoming air being brought to pass consecutively (53a) through the at least two zeolite units to form an increasing nitrogen gradient; and/or at least two units of the zeolite units are operated in the desorption stage, a pressure being released and/or a desorbing gas (22a, 22b) being brought to pass consecutively (53b) through the at least two zeolite units to form a decreasing nitrogen gradient in the zeolite units.
REFERENCES:
patent: 3542525 (1970-11-01), Pigford et al.
patent: 3702525 (1972-11-01), Simonet et al.
patent: 3944400 (1976-03-01), Bird
patent: RE29941 (1979-03-01), Bird
patent: 4165972 (1979-08-01), Iles et al.
patent: 4299596 (1981-11-01), Benkmann
patent: 4350501 (1982-09-01), Bannon
patent: 4715867 (1987-12-01), Vo
patent: 4732578 (1988-03-01), Benkmann
patent: 5328503 (1994-07-01), Kumar et al.
patent: 5382280 (1995-01-01), Choe et al.
patent: 5487775 (1996-01-01), LaCava et al.
patent: 5755856 (1998-05-01), Miyake et al.
patent: 5906673 (1999-05-01), Reinhold et al.
patent: 5985003 (1999-11-01), Hayashi et al.
patent: 6319303 (2001-11-01), Guillard et al.
patent: 6475265 (2002-11-01), Baksh et al.
patent: 6514318 (2003-02-01), Keefer
patent: 6641645 (2003-11-01), Lee et al.
patent: 6752851 (2004-06-01), Kawai et al.
patent: 2004/0069143 (2004-04-01), Sumida et al.
patent: 0 343 799 (1989-11-01), None
patent: 0350677 (1990-01-01), None
patent: 0537597 (1993-04-01), None
patent: 0 598 321 (1994-05-01), None
patent: 1 551 824 (1979-09-01), None
patent: 2281229 (1995-03-01), None
patent: 3-94809 (1991-04-01), None
DeWitt Ross & Stevens S.C.
Ifo Ceramics Aktiebolag
Leone, Esq. Joseph T.
Spitzer Robert H.
LandOfFree
Process and device in connection with the production of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and device in connection with the production of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device in connection with the production of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3530650