PSA (Pressure Swing Adsorption) oxygen is produced through a process that involves separating oxygen from air using specialized equipment.
The basic steps involved in producing PSA oxygen are as follows:
Air is drawn into the PSA oxygen generator and compressed to a high pressure.
The compressed air is passed through a vessel containing a material called a molecular sieve, which is capable of selectively adsorbing nitrogen molecules from the air while allowing oxygen molecules to pass through.
The nitrogen molecules are trapped by the molecular sieve, which becomes saturated with nitrogen over time.
After a set period of time, the molecular sieve is regenerated by depressurizing the vessel and allowing the trapped nitrogen molecules to be released back into the atmosphere. The oxygen that was allowed to pass through the molecular sieve is then collected and stored for use.
The process of adsorbing nitrogen and releasing it to regenerate the molecular sieve is referred to as "pressure swing adsorption", as it involves alternately pressurizing and depressurizing the vessel containing the molecular sieve to produce the desired oxygen output.
PSA oxygen generators are commonly used in a variety of applications, including medical oxygen production, industrial processes, and wastewater treatment, among others.