PSA (PRESSURE SWING ADSORPTION)
This technology is recommended for high purity applications (>99.9%).
PSA (Pressure Swing Adsorption) nitrogen generators are built using two activated charcoal CMS (Carbon Molecular Sieve) columns. CMS is a special type of activated charcoal whose pores, at high pressure, can absorb oxygen, carbon dioxide and water vapor while enabling nitrogen and other inert gases to pass through. By alternately increasing and decreasing the pressure within these columns, the nitrogen is separated from the other gases.
Before entering the activated charcoal columns, the conventional compressed air must be dried and purified using the high-yield air pretreatment package included with the Absoger nitrogen generators. While one of the columns produces nitrogen, the other regenerates the CMS through depressurization. In this way, the system continuously provides a stable, highly pure nitrogen output.