Liquid nitrogen quick freezing and industrial use of liquid nitrogen

2020-08-14 10:25:02

Liquid nitrogen quick freezing and industrial use of liquid nitrogen

In industrial production, the compressed liquid (liquid nitrogen quick freezing) air fractionation method is used to obtain liquid nitrogen, which can be used as a deep refrigerant. Due to its chemical inertness, it can directly contact biological tissues and freeze immediately without destroying biological activity. Can be used for:

　　 (1) Quickly freeze and transport food, or make ice products;

　　 (2) Conduct research on low temperature physics;

　　 (3) Demonstrate the low temperature state in science education. Soaking soft objects in liquid nitrogen at room temperature will be as brittle as glass;

　　 (4) (liquid nitrogen quick freezing) provides the temperature required for high-temperature superconductors to show superconductivity, such as yttrium barium copper oxygen.

　　(5) can be used as a refrigerant to quickly freeze biological tissues to prevent tissue damage.

　　 (6) Used in industrial nitrogen fertilizer production.

　　(7) is used for chemical testing, such as BET specific surface area test method.

Nuoruida (Tianjin) science and Technology Co., Ltd. is committed to research, development, and sales of liquid nitrogen freezer. Using European technology, we provide a variety of equipment. The main equipment is liquid nitrogen cryogenic freezer, liquid nitrogen cabinet freezer, liquid nitrogen tunnel freezer,sub-zero processing equipment, cryogenic freezing equipment, and so on.