A Nitrogen generation plant that uses the PSA process typically includes two adsorbers filled with carbon molecular sieves. These sieves have the ability to absorb Oxygen from compressed air. In this process, compressed and purified air is passed through the absorbers.
Carbon molecular sieves have a unique ability to absorb moisture over other gases, resulting in mainly oxygen being absorbed. This allows nitrogen-enriched gas to leave the absorber, and the oxygen concentration can be adjusted to the desired level. While one adsorber is being used, the second adsorber is regenerated by simply depressurizing it to ambient pressure. The resulting oxygen-enriched off-gas is then vented. Once the first absorber has completed about a minute of the adsorption process, the process controller switches over to the second absorber to continuously produce nitrogen.
Technical Specifications
BASIC CMS CMS HPN CMS-Dx CU-Dx Model
Gas Composition
Oxygen 0.1 to 2 % 10-ppm to 500ppm 1 to 3ppm(max) 1-ppm (max)
Hydrogen Nil Nil 0.5% or more Nil
Nitrogen 98-99.9% 99.5 to 99.999% Balance 99.9999% Balance 99.9999%
Dew Point (-)60ºC to (-)80ºC (-)60ºC to (-)80ºC (-)60ºC to (-)80ºC (-)60ºC to (-)80ºC
Normal outlet 5.5bar 5.5bar 5.5bar 5.5bar
pressure
With Boosting
outlet pressure up to 60 bar up to 60 bar up to 60 bar up to 60 bar
GasFe N2 Plant Applied for
