Gas separation: processes – With control responsive to sensed condition – Gas flow rate sensed
Patent
1992-08-26
1994-02-08
Spitzer, Robert
Gas separation: processes
With control responsive to sensed condition
Gas flow rate sensed
95 54, 96 14, 55210, B01D 5322
Patent
active
052845060
ABSTRACT:
A process for generating a nitrogen-enriched gas from a feed stream of atmospheric air or a mixture of nitrogen which is not continuously supplied to a membrane system, which membrane system comprises a non-permeate side and a permeate side, and being more permeable to oxygen than nitrogen, which process entails feeding the feed stream side of the membrane, and recovering an oxygen enriched gas being recovered on the permeate side of the membrane system while a nitrogen-enriched gas is recovered from the non-permeate side of the membrane, wherein a feed back of nitrogen gas or nitrogen- containing gas having an oxygen gas concentration lower than 21% is supplied to the non-permeate side of the membrane system during at least a part of the period of time where the air feed stream is not supplied to the membrane system thereby avoiding any substantial retrodiffusion of oxygen through the membrane system from the permeate side to the non-permeate side of the membrane during those periods of time where the feed stream is not supplied to the membrane system.
REFERENCES:
patent: 3735558 (1973-05-01), Skarstrom et al.
patent: 4556180 (1985-12-01), Manatt
patent: 4806132 (1989-02-01), Campbell
patent: 4818254 (1989-04-01), Anand et al.
patent: 4838904 (1989-06-01), Sanders, Jr. et al.
patent: 4840646 (1989-06-01), Anand et al.
patent: 4851014 (1989-07-01), Jeanes
patent: 4874401 (1989-10-01), Jeanes
patent: 4931070 (1990-06-01), Prasad
patent: 4944776 (1990-07-01), Keyser et al.
patent: 5030251 (1991-07-01), Rice et al.
patent: 5118327 (1992-06-01), Nelson et al.
patent: 5125937 (1992-06-01), Sadkowski et al.
patent: 5131929 (1992-07-01), Brockmann et al.
l'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation de
Spitzer Robert
LandOfFree
Fast response high purity membrane nitrogen generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast response high purity membrane nitrogen generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast response high purity membrane nitrogen generator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-695117