Introduction                                                                                

As shown in the above flow chart: the oxygen production system is mainly composed of an air compressor, an air cooler, an air buffer tank, a switching valve, an adsorber and an oxygen balance tank. After the raw material air passes through the suction port filter to remove the dust particles, it is pressurized to 3~4barg by the air compressor and enters one of the adsorbers. The adsorber is filled with adsorbent, in which moisture, carbon dioxide, and a small amount of other gas components are adsorbed by the activated alumina at the bottom of the adsorber, and then nitrogen is adsorbed by the zeolite molecular sieve filled on the upper part of the activated alumina. The oxygen (including argon) is a non-adsorbed component and is discharged from the top outlet of the adsorber as product gas to the oxygen balance tank. When the adsorber is adsorbed to a certain level, the adsorbent in it will reach a saturated state. At this time, the adsorbent is vented through the switch valve, and the adsorbed water, carbon dioxide, nitrogen and a small amount of other gas components are discharged to the atmosphere, and the adsorbent is regenerated. Each adsorber of PSA performs the following steps alternately: ---Adsorption---Desorption---Stamping The above three basic process steps are automatically controlled by PLC and switching valve system.

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