PRESSURE SWING ADSORPTION PROCESS AND SYSTEM FOR GAS SEPARATION

摘要

IMPROVED PRESSURE SWING ADSORPTION PROCESS AND SYSTEM FOR GAS SEPARATION An improved pressure swing adsorption process and system enable a high purity product comprising the more readily adsorbable component of a feed gas mixture to be economically recovered, e.g. nitrogen from air. A processing cycle is employed in which the more readily adsorbable component is used as a copurge gas at upper adsorption pressure, and the less readily adsorbable component is used for countercurrent purge at a subatmospheric desorption pressure and for initial repressurization in a countercurrent backfilling step following said countercurrent purge step. D-15713