Nitrogen (N2) makes up around 78 percent of air and has been deployed across a wide range of industrial applications since Carl von Linde first succeeded in separating nitrogen and oxygen by rectifying liquefied air in 1902. Its low boiling point of – 196 °C and low reactivity make the colourless, odourless and flavourless gas ideal for use in diverse industries.
Purities & Mixtures
|Grade||Total Purity by volume (%)|
|Cylinder Colour : Body : French Grey. Shoulder : Black ; with suitable grade identification label|
|Cylinder Valve : Right hand – conforming to IS 3224|
Industries Usage and Applications
Essential to the aerospace & aircraft industry, nitrogen is used in high Reynolds number wind tunnels, heat treating furnaces and autoclaves to help create incredibly strong but lightweight materials. Nitrogen is also used as an assist gas for laser cutting applications.
Used as a pressurizing gas, nitrogen can help propel liquids through pipelines. It is also used to shield oxygen-sensitive materials from the air and to remove volatile organic chemicals from process streams.
As an inert industrial gas, nitrogen is used as a blanketing agent to separate sensitive products and processes from air. It is also used as a purging agent in piping and equipment to prevent contamination.
Nitrogen is a key cryogenic agent in cooling, chilling and food freezing. Because of its extremely cold temperatures, immersion freezing in liquid nitrogen is the fastest freezing method known for producing Individually Quick Frozen (IQF) foods. Nitrogen also plays a key role in reducing spoilage, discoloration and off–flavors, giving strength to retail packaging.
Nitrogen NF is used as a cryogenic to freeze and preserve blood, tissue, and other biological specimens, and to freeze and destroy diseased tissue in cryosurgery and dermatology. It is also used to power medical devices.
A carrier and purge gas in steel production, nitrogen is used to prevent oxidation and is a key component in the heat-treating process.
The oil and natural gas industry utilizes nitrogen to increase reservoir reserves and fracture hydrocarbon-bearing formations to significantly increase the production of oil and gas, and to improve operating efficiency.
Gaseous nitrogen is commonly used for purging, pressure transferring, mixing and blanketing — protecting a process from moisture intrusion, oxidation, degradation and contamination. Cryogenic liquid nitrogen is used to control the temperature in reactor cooling applications and to preserve biological samples.
An industrial gas used to blanket storage tanks and purge pipelines, nitrogen can also strip Volatile Organic Compounds (VOCs) from chemical process streams and wastewater, and reduce VOC emissions.
In stainless steel tube welding, nitrogen is used as a purge gas. It is also used as an assist gas for laser cutting, and enhances plasma cutting.