PSA is the most widely used method for industrial oxygen production. These generators separate nitrogen from ambient air using a pressurized tank filled with zeolite

Oxygen generators extract oxygen from compressed air, supplying it in real time for industrial applications or storing it in pressure tanks.

In 2008, a carbon fiber material company in Shanghai purchased a pressure swing adsorption nitrogen generator from RICH.

Pressure swing adsorption nitrogen production is a new technology for producing nitrogen from air. Pressure swing adsorption (PSA) is a physical process that is approximately isothermal.