◆Low-pressure raw air is transported by a blower, and after dust removal through purification, it enters the VPSA system's molecular sieve adsorption tower for separation.
◆The adsorption tower is a two-tower or three-tower system that uses specific molecular sieves to adsorb nitrogen, carbon dioxide,and water vapor, while oxygen is collected in a buffer vessel.
◆Once the adsorption of nitrogen, carbon dioxide, water vapor, and other components in the air reaches a set control value, the adsorbent in the tower is thoroughly desorbed and regenerated through pressure reduction and vacuum pumping to a certain vacuum level.
◆Under the control of an automatic control system such as PLC or DCS, the program automatically controls valve circulation to complete continuous oxygen production.
The VPSA oxygen production process features low oxygen cost, low equipment operation cost, high degree of automation, small footprint,and convenient start-stop operation.