Air Separation Unit (ASU)

An Air Separation Unit (ASU) is a facility that isolates specific gases from ambient air—mainly nitrogen and oxygen—by cooling the air to very low temperatures to liquefy it, then gradually warming it to separate the gases based on their different boiling points. This process produces high-purity oxygen and nitrogen for industrial uses, such as medical equipment, manufacturing, and energy production. ASUs are essential for industries requiring large quantities of pure gases, providing a reliable and efficient way to obtain them from the Earth's atmosphere.