PSA oxygen generator uses zeolite molecular sieve as adsorbent, uses the principle of pressure adsorption and pressure reduction desorption to adsorb and release oxygen from the air, so as to separate oxygen from the automatic equipment. The separation of O₂ and N₂ by zeolites is based on the small difference of kinetic diameter between the two gases.

      N₂ has a faster diffusion rate in the pores of zeolite, while O₂ has a slower diffusion rate. With the continuous acceleration of the industrialization process, the market demand of PSA oxygen generator is increasing, and the equipment plays an important role in the industry.

      The oxygen content in the air is ≤ 21%. The combustion of fuel for industrial boilers and kilns is also carried out under such air content. The practice shows that when the gas oxygen content of the boiler is more than 25%, the energy saving is as high as 20%; the heating time of the boiler start-up is shortened by 1 / 2-2 / 3. Oxygen enrichment is to collect the oxygen in the air by physical methods, so that the content of oxygen enrichment in the collected gas is 25% - 30%.