METHOD FOR PRODUCING OXYGEN BY ADSORPTION SEPARATION FROM AIR

摘要

A method of adsorption separation of gases of the kind which regenerates the adsorbant by pressure variation and uses two adsorbers, wherein the recompression stage includes at least one recompression stage using the oxygen produced, and a final recompression stage up to the high point of the cycle pressure using air intake without draw-off; and wherein the pressure high-point of the cycle is selected between 1.2 and 2 x 10<5> Pa and the pressure low-point is selected between 0.3-0.7 x 10<5> Pa, at least the final part of the desorption stage being carried out by pumping. The method is essentially relevant to the production of oxygen.