Air separation equipment​ refers to a device that uses air as raw material to separate various gases such as oxygen and nitrogen in the air by cryogenic separation or adsorption separation. The air separation plant is mainly composed of eight systems, namely compression system, purification system, refrigeration system, heat exchange system, rectification system, product conveying system, liquid storage system and control system.

Air separation equipment is an equipment that takes air as raw material, turns air into liquid through compression circulation and deep freezing, and then gradually separates from liquid air through distillation to produce inert gases such as oxygen, nitrogen and argon. There are many forms and types of air separation equipment produced in China.