Скачать или смотреть shenger Cryogenic air separation equipment，cryogenic air separation plant.

Nitrogen is found abundantly in the earth’s atmosphere and constitutes around 78% of the same. Because of extensive industrial applications, nitrogen is also known as the largest industrial gas. Nitrogen and liquid nitrogen are used in wide range applications including inerting, heat treating, reactor cooling, freezing, chilling, flour & dough cooling, meat mixing, modified atmosphere packaging, etc. Liquid nitrogen is generated in a cryogenic nitrogen plant by tapping air from the atmosphere which is compressed and cooled in heat exchangers to cryogenic temperatures. Then, compressed air is moved into a molecular sieve where impurities such as carbon dioxide, moisture and hydrocarbons are eliminated. Here, the air is moved into a high pressure distillation column where nitrogen is separated from others gases and is formed at the bottom of the distillation column. It is continuously distilled till it meets industrial and medical specifications.