Pressure Swing Adsorption Technology
Pressure Swing Adsorption (PSA) technology is used with specially
developed adsorbents called zeolites to separate oxygen from nitrogen
to be able to use pure oxygen in many applications.
First, air is compressed up to 7 bars with the help of compressors, then
air is dried out to remove the moisture in the air. Filtration takes place
thereafter to filter out the remaining particles, aerosol which is in the
pressurized air stream.
PSA unit consists two tanks filled with zeolites. Each column undergoes
cyclic sequence of pressurization, generation, equalization, and exhaust
cycles for continuous flow of high purity oxygen.