RUECKGEWINNUNG VON WAERME IN KASKADE BEI DER HERSTELLUNG VON SAUERSTOFF UND STICKSTOFF

A process for the integration of a chemical absorption separation otoxygen and nitrogen from air with a combustion process is set forth wherein excess temperature availability from the combustion process is more effectively utilized to desorb oxygen product from the absorbent and then the sen sible heat and absorption reaction heat is further utilized to produce a high temperature process stream The oxygen may be utilized to enrich the combustion process wherein the high temperature heat for desorption is conducted in a heat exchange preferably performed with a pressure differential of less than 10 atmospheres which provides considerable flexIbility in the heat exchange.