L'air Liquide,societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude

Philippe Urner

Gilbert Chevalier

An installation and a process for the recovery and/or purification of at least one portion of the nitrous oxide (N O) contained in a flow of waste gas containing nitrous oxide and at least one other gaseous compound, in which: (a) at least one nitrous oxide portion contained in the flow of waste gas is separated by permeation, and (b) at least a portion of the gaseous nitrous oxide separated in step (a) is recovered. Preferably, the source of the flow of waste gas is an industrial unit using an industrial process giving off the waste gas, preferably a unit for the production of adipic acid, a unit for the production of nitrous oxide, a unit for the production of glycoxylic acid or a unit for the production of nitric acid.

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Ecublens, Switzerland

Philippe Urner