Liquid nitrogen has a wide range of application fields and the industry has good development prospects.

Liquid nitrogen (LN2) refers to the liquid form formed by nitrogen at low temperatures. It appears as a colorless and transparent liquid with a boiling point of -196.56°C. It is non-corrosive and slightly soluble in water and ethanol. The main production methods of liquid nitrogen include cryogenic air separation, molecular sieve air separation, membrane air…