Industrial oxygen equipment VPSA, PSA oxygen equipment, pressurized adsorption vacuum desorption (referred to as VPSA) oxygen equipment, that is, penetrating atmospheric pressure conditions, the use of VPSA special molecular sieve selective adsorption of nitrogen, carbon dioxide, and water and other impurities in the air, in the conditions of vacuum desorption of the molecular sieve, so as to circulate the production of higher purity of oxygen (90 ~ 95%). VPSA energy consumption is low, the larger the equipment the lower its energy consumption.