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.

The adsorbers used in the purification system include vertical axial flow, horizontal double bed and vertical radial flow. Vertical axial flow is mainly used for supporting air separation equipment below 10000 grade (with a diameter of 4.6m). The bed thickness is 1550 ∽ 2300mm. It can be arranged in double layers and single layers. The vertical axial flow adsorber has the best air distribution.