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Oil and Petrochemical Refineries

Nitrogen Use in Oil Refineries

Oil RefineryNitrogen
(5- 3vol.% O2 residual)


Nitrogen is used to inert storage or process tanks as well as move product through pipelines at refineries. Nitrogen prevents hazardous or explosive environments..

Oil and petrochemical refineries are highly complex environments that require the use of numerous gases and chemicals to carry out various processes safely and efficiently. Nitrogen is one such gas that finds wide application in these facilities. Here are some of the ways in which nitrogen is used in oil and petrochemical refineries:

  • Tank blanketing: Nitrogen is used to create an inert atmosphere inside storage tanks to prevent the formation of combustible mixtures. This is important for maintaining safe conditions during tank filling, liquid transfer, and storage.
  • Pipeline purging: Before introducing a new product into a pipeline, it is necessary to ensure that the pipeline is free of any residual product or contaminants that could cause contamination or an unsafe reaction. Nitrogen is used for pipeline purging to remove air, moisture, and other impurities.
  • Sparging: Refineries often use nitrogen for sparging operations, where nitrogen is introduced into liquids to displace oxygen and other gases. This helps to minimize the risk of oxidation and maintain product quality.
  • Process cooling: Nitrogen is used as a coolant in a variety of refinery processes, such as cryogenic condensation and liquefaction, and cooling reactors and vessels.

NOVAIR’s in-house modular nitrogen generators are a reliable and cost-effective solution for producing nitrogen gas in-house in oil and petrochemical refineries. With their advanced technology and flexibility, these generators offer a constant supply of nitrogen gas at the required purity and flow rate, thus ensuring the safety and efficiency of refinery operations.


Worldwide leading manufacturer of in-house gas production systems, NOVAIR is the founder of the Green Oxygen concept and the vision that decentralized in-house medical oxygen production with the only low-carbon way to supply oxygen to hospitals. With over 45 years of experience manufacturing high-quality medical and industrial gas generating equipment, and with high-tech R&D centers in France, USA and Italy, NOVAIR definitively leads the world in innovative in-house gas production by adsorption systems.

Headquartered in France, NOVAIR operates in over 150 countries and has installed thousands of gas generators around the planet, supplying daily life-saving medical oxygen to hundreds of thousands of patients the world over. NOVAIR also provides industrial oxygen and nitrogen that enhances the effectiveness of scores of industries through a broad range of applications and market segments.

Contact us to learn more.