C - Chemistry – Metallurgy – 01 – C
Patent
C - Chemistry, Metallurgy
01
C
183/1, 23/220
C01C 1/04 (2006.01) B01D 53/22 (2006.01)
Patent
CA 1129626
ABSTRACT OF THE DISCLOSURE Processes are disclosed for separating at least one gas from a gaseous feed mixture containing at least one other gas comprising passing the gaseous feed mixture to at least two permeator stages in series. Each permeator stage contains a separation membrane which has a feed side and a permeate exit side and exhibits selective permeator of the at least one gas as compared to the permeation of the at least other gas of the gaseous mixture. A total pressure differential is maintained across the thickness of the separation membrane in each permeator stage to provide a driving force for the permeation of the at least one gas across the separation membrane. The ratio of total pressure on the feed side to total pressure on the permeate exit side of the separation membrane for at least one permeator stage is least than the ratio of total pressure on the feed side to total pressure on the permeator exit side of the separation membrane for at least one subsequent, i,e., downstream, permeator stage. The at least one gas of the gaseous feed mixture permeates through the membrane, and a permeating gas containing the at least one gas is obtained on the permeator exit side of each of the permeator stages. Between permeator stages, the non-permeating gas from one permeator stage is passed to the feed side of the next permeator stage. In one practical aspect, the process for separating at least one gas is employed to treat an ammonia synthesis purge stream from an ammonia synthesis loop. The separation membrane in the permeators is selective to the permeation of hydrogen as compared to the permeation of inert contaminants such as methane and argon. A hydrogen-containing permeate is obtained, and the permeate from at least one permeator stage is recycled to the ammonia synthesis zone in the ammonia synthesis loop.
323747
Graham Tommy E.
Maclean Donald L.g.
Mcfadden Fincham
Monsanto Company
LandOfFree
Processes for separating at least one gas from a gaseous... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Processes for separating at least one gas from a gaseous..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Processes for separating at least one gas from a gaseous... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-454896