Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1998-09-30
2000-06-27
Spitzer, Robert H.
Gas separation: processes
Solid sorption
Including reduction of pressure
95103, 95105, 95129, 95143, B01D 53047
Patent
active
06080226&
ABSTRACT:
A feedstream comprising nitrous oxide is purified by a pressure swing adsorption process employing a copurge with an oxygen-lean stream to produce a high purity nitrous oxide stream. The high purity nitrous oxide stream can be incorporated in a complex for the production of adipic acid to recover nitrous oxide from a dilute waste stream and pass the recovered nitrous oxide to a process for the production of phenol from an aromatic hydrocarbon. Unreacted nitrous oxide from the phenol production step acid can be recovered in a second, or vent PSA step, and combined with the recovery of byproduct nitrous oxide waste streams from the production of adipic for the overall recovery of nitrous oxide, thereby significantly reducing nitrous oxide emissions from the production of adipic acid.
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Cowan Timothy M.
Davis Mark M.
Dolan William B.
Patel Kirit M.
Zarchy Andrew S.
Silverman Richard P.
Spitzer Robert H.
Tolomei John G.
UOP LLC
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