●   The Extension series still adopts PSA (pressure swing adsorption) technology, takes zeolite sieve as adsorbent, and uses the principle of pressure adsorption and step-down desorption to adsorb oxygen from the air, so as to separate nitrogen from the automatic equipment. Zeolite molecular sieve is a kind of special pass processing process, the surface and interior of the microporous spherical particle adsorbent is white.

●    Its pass characteristics enable it to achieve kinetic separation of O2 and N2.

●    The separation effect of zeolite molecular sieve on O2 and N2 is based on the slight difference in the kinetic diameter of the two gases. N2 molecules have a faster diffusion rate in the micropores of zeolite molecular sieve, while O2 molecules have a slower diffusion rate. The diffusion of water and CO2 in compressed air is not much different from that of nitrogen, and oxygen molecules are finally enriched from the adsorption tower.