The air separation plant is a set of industrial equipment and equipment used to separate the components of the air and produce oxygen, nitrogen, argon and other gases of the air components.
The most commonly used air separation method is cryogenic rectification. The cryogenic separation method converts the air into a liquid state through the compression cycle deep freezing method, and gradually separates the liquid air from the liquid air according to different boiling points through the cryogenic rectification equipment to produce inert gases such as oxygen, nitrogen and argon. It is widely used in traditional metallurgy. , New coal chemical industry, large-scale nitrogen fertilizer, professional gas supply and other fields.
Other air separation methods, such as membrane separation, pressure swing adsorption (PSA) and vacuum pressure swing adsorption (VPSA), are mainly used to separate single components from the air. The high-purity oxygen, nitrogen and argon used in the manufacture of semiconductor devices require cryogenic distillation. Similarly, a viable source of the rare gases neon, krypton, and xenon is to also use cryogenic distillation.
Therefore, cryogenic distillation is the most important air separation method.
