PSA Oxygen Plants

PSA Oxygen Gas Plants separates oxygen from compressed air utilizing pressure swing adsorption technology. Compressed Air, which consists of approximately 21% oxygen and 78% nitrogen, is passed through a bed of zeolite molecular sieve. The sieve preferentially adsorbs N2 and moisture allowing the O2 to pass through as a product gas at pressure. While one of the towers is in the adsorption phase the other tower is regenerated by de-pressurizing, at which time the sieve releases the adsorbed gases to the atmosphere, and the cycle is then repeated. Before feeding the air to the PSA tower refrigerated type air dryer and set of filters are installed to cool the air and remove moisture and dust particles.