How do they make liquid nitrogen? How to make liquid nitrogen? Liquid nitrogen is generated by an air separation unit as a result of Oxygen is produced by an air separation unit (ASU) through liquefaction of atmospheric air and separation of the oxygen by continuous cryogenic distillation nitrogen continuous cryogenic distillation. Manufacturing of nitrogen starts with the ASU manufacturing process at the main air compressor and stops with the output of the product storage tanks. Air is compressed which is then directed through a cleanup system where moisture, carbon and hydrocarbons are eliminated. Afterwards the air goes through heat exchangers and gets cooled to cryogenic temperatures. Then air goes into a high pressure distillation column where it gets into a vaporous form of nitrogen at the top of the column which is then transferred to a cryogenic storage tank.
Applications of nitrogen gas –
Nitrogen is one of the largest industrial gases and is used in numerous industries.
- Light Bulbs—Nitrogen is used in manufacturing light bulbs. It is cheap substitute for argon in incandescent light bulbs.
- Packaged Foods—Nitrogen is used for preserving the freshness of packaged food. Prevents oxidation of food.
- Fertilizers—Nitrogen is used in making ingredients for increasing soil fertility.
- Electronic Parts—Nitrogen is used for manufacturing transistors, integrated circuits, and diodes.
- Stainless Steel—Nitrogen is also used for making stainless steel.
- High Voltage Equipment— dried pressurized Nitrogen gas is used for making high voltage equipment.
Liquid nitrogen is nitrogen in a liquid state at cryogenic temperatures. It is generated in our liquid nitrogen plants manufactured with high quality materials. Moreover, liquid nitrogen is easy to transport without pressurization. Now, liquid nitrogen is used in the preparation of cocktails as it can chill glasses and freeze ingredients. It is used for transport of food products, cryopreservation of biological samples, and coolant for superconductors, and vacuum pumps. It is also used in cryotherapy for removal of skin abnormality, protecting materials from oxygen exposure, etc.