Air separation

What Is Air Separation?

Air separation is a way to split the air we breathe into its main parts, like oxygen, nitrogen, and sometimes argon. We do this because factories and other places need these gases to be very clean so that things work right.

How Do We Separate Air?

The most common way to separate air is by a process called fractional distillation. Big factories, called cryogenic air separation units, use this method. They cool the air until it becomes a liquid, and then separate the different gases based on the temperatures at which they turn back into gas.

Why Is Air Separation Important?

Air separation is used in many important ways. Hospitals use pure oxygen to help patients. SpaceX uses liquid oxygen and nitrogen to build rockets. In steelmaking, oxygen is needed to make steel, and nitrogen is used to make ammonia. This process helps us get the gases we need for many important jobs.