Liquid Nitrogen-lin

Liquid nitrogen is characterized by its inertness, colorlessness, odorlessness, noncorrosiveness, nonflammability, and extreme coldness. Constituting the predominant portion of the atmosphere (78.03% by volume, 75.5% by weight), nitrogen, though inert and incapable of supporting combustion, is not conducive to sustaining life.

While nitrogen is predominantly used in its gaseous form, it is commonly stored and transported in its liquid state, offering a more economical means of supply provision. Liquid nitrogen, classified as a cryogenic liquid, exhibits a normal boiling point below –130°F (–90°C), with its boiling point recorded at –320°F (–196°C). This substantial temperature variance between the product and its ambient surroundings necessitates specialized equipment for the safe storage and handling of cryogenic liquids.

A typical system comprises a cryogenic storage tank, one or more vaporizers, and a pressure and temperature control mechanism. Structurally akin to a vacuum bottle, the cryogenic tank is engineered to insulate the inner vessel from external heat. Vaporizers facilitate the conversion of liquid nitrogen into its gaseous form, while a pressure control manifold regulates the gas pressure fed into the process. Notably, processes utilizing liquid nitrogen obviate the need for vaporizers and pressure control manifolds.