| 摘要 |
<p>PURPOSE:To improve the yield of O2 by connecting in parallel both the air feed circuits and the bypass circuits to the air introduction sides of a plurality of zeolite adsorption towers and also connecting both an exhaust circuit and the O2-enriching circuits having the throttle mechanisms to an air conduction side in parallel. CONSTITUTION:Outside air is compressed by an air compressor 2 via an air filter 1 and introduced into a zeolite packed tower A via an air feed circuit 17a and simultaneously one part is reduced by the throttle mechanism 15a of a bypass circuit 18a and introduced into the zeolite packed tower A and N2 is adsorbed and removed. O2-enriched air is throttled to the atmospheric pressure by the throttle mechanism 19a of an O2-enriching circuit 20a and sent to a feed pipe. On the other hand, the air obtained by reducing high-pressure air to the atmospheric pressure or the reduced pressure with a throttle mechanism 15b is introduced into a zeolite packed tower B and reduced-pressure desorption and purging action are performed and the air having high N2 concentration is discharged to the outside via an exhaust circuit 22.</p> |
