B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
252/30, 23/354
B01D 15/00 (2006.01) B01D 53/14 (2006.01) C01B 13/02 (2006.01) C01B 21/04 (2006.01)
Patent
CA 1193239
Abstract of the Disclosure Process for the separation and purification of oxygen and nitrogen is disclosed which utilizes solutions of oxygen carriers to selectively absorb oxygen from a gaseous stream. In the process, an oxygen carrier capable of reversibly binding molecular oxygen is dissolved in a solvent solution, which absorbs oxygen from an oxygen- containing gaseous feed stream such as atmospheric air and desorbs oxygen to a gaseous product stream, leaving nitro- gen as a byproduct. The feed stream is maintained at a sufficiently high oxygen pressure to keep the oxygen carrier in its oxygenated form during absorption, while the product stream is maintained at a sufficiently low oxygen pressure to keep the carrier in its deoxygenated form during desorption. In an alternate mode of opera- tion. the carrier solution is maintained at a sufficiently low temperature and high oxygen pressure to keep the oxy- gen carrier in its oxygenated form during absorption and at a sufficiently high temperature to keep the carrier in its deoxygenated form during desorption. Under such con- ditions, exceptionally high oxygen concentrations on the order of 95% to 99% are obtained, as well as a long carrier lifetime in excess of 3 months, making the process commercially feasible.
430163
Bend Research Inc.
Oyen Wiggs Green & Mutala Llp
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