How Does PSA Technology Ensure a Reliable and Pure Oxygen Supply?​

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Pressure Swing Adsorption (PSA) technology is the engineering marvel that enables reliable and efficient oxygen production on-site. Its reliability stems from a simple, robust design with no moving parts within the separation towers themselves. The key component is the Zeolite Molecular Sieve, a synthetically produced aluminosilicate mineral with a precise pore size. When compressed air is forced through the sieve, the smaller nitrogen molecules are trapped within these pores, while the larger oxygen and argon molecules pass through.

The system's continuous output is ensured by the twin-tower design. While one tower is actively separating air and producing oxygen, the other is undergoing regeneration. This regeneration process involves rapidly depressurizing the tower to release the adsorbed nitrogen, which is vented away. A small portion of the produced oxygen is often used to purge the second tower, ensuring it is clean and ready for the next cycle. The control system seamlessly alternates the valves between the two towers every few seconds, creating a steady, pulsation-free flow of oxygen. This clever design ensures non-stop operation and consistent purity levels, typically between 91% and 95%, which is ideal for most industrial applications.