Pressure swing adsorption (PSA) nitrogen generator takes air as raw material, uses molecular sieve adsorbent of nitrogen production equipment to absorb different nitrogen and oxygen in air at room temperature to generate nitrogen. The main structure is composed of air purification system, automatic control system, nitrogen generation system, nitrogen storage tank, etc. Pressure swing adsorption, low energy consumption, low noise, etc. Air separation equipment is widely used in sports, metal processing, petrochemical, electronic industry, food industry, storage and transportation and other fields.

    Carbon molecular sieve is a porous material composed of carbon, and its pore structure model is random pressure swing adsorption nitrogen production and carbon accumulation structure. Its separation ability from air depends on the dispersion velocity or adsorption force of various gases in the air in the micropores of carbon molecular sieve. Because oxygen molecules disperse much faster in the narrow pores of carbon molecular sieve microporous system than nitrogen molecules. Therefore, when pressurized, it preferentially adsorbs oxygen, while nitrogen is enriched into high purity gas. Pressure swing adsorption type nitrogen generator uses this characteristic to complete nitrogen and oxygen separation through pressure adsorption and decompression desorption.

    The compressed air enters the activated carbon filter for oil and water removal through the gas storage buffer tank, then it is dried, cooled and depressurized by a cold dryer, and then enters two adsorption towers after T-level and A-level fine filtration. Pressure swing adsorption (PSA) was used as a non heat source adsorption separation process in PSA nitrogen generator. The adsorption capacity of carbon molecular sieves for adsorbed complexes (mainly oxygen molecules) increases with the increase of its partial pressure, and decreases due to the decrease of its partial pressure. Pressure swing adsorption (PSA) usually uses two parallel towers instead of pressure adsorption and vacuum regeneration to obtain continuous nitrogen flow. In this way, the carbon molecular sieve is adsorbed under pressure and desorbed under reduced pressure, and the adsorbed part is released to regenerate carbon molecules and form circulation operation.