METHOD OF LIBERATION OF NITROGEN AND OXYGEN FROM AIR

摘要

A method of liberation of nitrogen and oxygen from air on the cycle of average or high pressure and subsequent fractionation, which provides for the division of air to be throttled into two flows, of which the first one is cooled together with air directed into the expander, while the second flow is cooled independently, at least part of said second flow being mixed with said first flow at a temperature close to the critical one, additionally cooled, throttled and directed for fractionation.