THREE THINGS YOU NEED TO SEPERATE NITROGEN FROM AIR

The idea of separating nitrogen from air by an adsorptive process was equally off-beat as it was fascinating. But in the early 70's Bergbau-Forschung managed just that. Since then we licence the BF- Process to separate nitrogen from air worldwide. This process is based on the Molecular Sieve Effect Facilitated by special custom-made activated carbon.The principle of the process is surpris- ingly simple and very effective. Two adsorbers, used alternately, are filled with the Carbonaceous Molecular Sieve or CMS. To begin with, one of the two adsorbers is filled with air under pressure.Then, the Molecular Sieve adsorbs mainly oxygen, and a nitrogen rich gas leaves the adsorber.

Pressure Swing Adsorption (PSA) technique is utilised to obtain Oxygen from atmospheric air. Compressed air at about 4-6 bar, depending on the size of the unit is processed via a compressor or from a compressed air network alternatively in two towers equipped with special grade of Molecular Sieves (Adsorbers A and B). Through the pressure change controlled electronically by valve block D, Nitrogen, moisture and Carbondioxide are adsorbed and desorbed.