On board oxygen production system in aircraft, long range aircraft in particular

摘要

An on-board oxygen production system comprises adsorber(s) for adsorbing nitrogen molecules contained in an oxygen/nitrogen feed mixture. The adsorbent comprises a faujasite-type zeolite having a silicon/aluminum ratio of 1-1.5, exchanged to at least 80% with lithium cations. An Independent claim is also included for supplying the upper airways in an aircraft with an oxygen-enriched stream comprising compressing an oxygen/nitrogen feed mixture to 0.5-5 bar, feeding the adsorber(s), producing an oxygen-enriched gas stream, and conveying the controlling the oxygen-enriched gas stream right to the upper airways of person(s).