Pressure swing adsorption nitrogen machine (PSA nitrogen machine) is based on carbon molecular sieve as adsorbent, using the principle of pressure adsorption, pressure desorption to absorb oxygen from the air, and then separate nitrogen automatic equipment. Carbon molecular sieve is a kind of coal as the main raw material, after grinding, oxidation, molding, carbonization and special pass processing skills, the appearance and the interior is covered with micropores of the columnar granular adsorbent, black.

The pore size distribution of carbon molecular sieves enables the kinetic separation of O2 and N2. This pore size distribution allows different gases to disperse into the pores of the molecular sieve at different rates, without crowding out any of the gases in the mixture (air). The respective effects of carbon molecular sieve on O2 and N2 are based on the subtle differences in the kinetic diameters of the two gases. The kinetic diameter of O2 molecule is small, so there is a faster dispersion rate in the micropores of carbon molecular sieve, while the kinetic diameter of N2 molecule is large, so the dispersion rate is slower. The dispersion of water and CO2 in compressed air is not much different from that of oxygen, while argon dispersion is slower. Finally, the mixture of N2 and Ar is enriched from the adsorption tower.

With the increase of adsorption pressure, the adsorption capacity of O2 and N2 increases together, and the fluctuation of the adsorption capacity of O2 is larger. The pressure swing adsorption period is short, and the adsorption amount of O2 and N2 is far from reaching the equilibrium (maximum value), so the different dispersion rates of O2 and N2 make the adsorption amount of O2 greatly exceed the adsorption amount of N2 in a short time.

Pressure swing adsorption nitrogen machine (PSA nitrogen machine) is the use of carbon molecular sieve selection adsorption characteristics, the selection of pressure adsorption, decompression desorption cycle, so that compressed air replacement into the adsorption tower (can also be ended by a single tower) to end the air, and then successive production of high-purity product nitrogen.

Application planning of this product:

1. Chemical industry: cover, replacement, cleaning, purging, pressure transport, chemical fiber production protection

2. Thermal disposal: controlled protective atmosphere, powder metallurgy and sintering of magnetic materials

3. Beer: filtration, delivery, sake, back pressure, filling

4. Food industry: nitrogen-filled packaging, storage and preservation

5. Medicine: cover, nitrogen storage, pneumatic transmission

6. Oil and natural gas: container, pipeline purge, leak detection, nitrogen injection

7. Electrical (optical) cable: crosslinked electrical (optical) cable produces protective gas

8. Electronics: Nitrogen protection for semiconductor and electrical components

9. Coal: underground explosion-proof, coal field prevention and rescue

10. Transportation and storage: goods packaging, material pressure transport, storage, insecticide and anti-saving