PSA nitrogen generator working principle

Working principle Nitrogen production equipment is based on Pressure Swing Adsorption (PSA) technology. High-quality carbon molecular sieves are used as adsorbents to directly separate oxygen from nitrogen in compressed air. After purification and drying of compressed air, under the effect of pressure, the diffusion rate of oxygen in the pores of carbon molecular sieves is much larger than the diffusion adsorption rate of nitrogen in the pores of carbon molecular sieves. When the adsorption does not reach equilibrium, nitrogen is in the gas phase. It is enriched to form nitrogen products. After decompression to atmospheric pressure, the adsorbent desorbs the adsorbed oxygen and other impurities to achieve regeneration. Two adsorption towers are installed in the system, one tower adsorbs nitrogen and the other tower desorption and regeneration. The PLC program controller controls the opening and closing of the pneumatic valve, so that the two towers work alternately to achieve continuous production of high-quality nitrogen.