Inerting

Inerting of chemical processes, plants and equipment is often crucial for the safety of personnel, materials and plants.

Secure production plants and food with inerting

There are many chemical processes where it is necessary to:
● prevent explosions
● eliminate unwanted reactions
● keep moisture away from products
● ensure safety during maintenance work

The basic principle of inerting is to replace the air around or above the product with dry inert gas, forming a protective, safe gas layer over the substance that prevents oxygen and/or moisture from coming into contact with reactive or absorbent substances. Additionally, inerting can be used for removing flammable or toxic gases. An inert atmosphere is particularly important when storing highly volatile or oxidizing products.

Inert gas does not directly interact with the compound or product. Nitrogen is the most commonly used gas for this purpose, although carbon dioxide or argon are sometimes used as well.

Various inerting methods are used in many industrial processes.

There are many processes where it is important to protect against unwanted reactions, keep moisture away from sensitive substances, monitor critical reactions, and ensure safety during maintenance work. In the food industry, inerting is typically used to keep oxygen levels low in food and around it.

An inert or protected atmosphere also stabilizes the product and extends its shelf life. In the chemical industry, reactors, mixing tanks, centrifuges, vacuum filters, grinding and mixing plants, dryers and filling plants are often inerted.

Inert gases are also used in mines and silos for safety and fire prevention. In many heat treatment furnaces, flammable substances such as oxygen and water are removed from the furnaces for safety reasons and to avoid oxidation of the treated object. Inerting is also necessary at a more general level for cleaning pipes and tanks during maintenance and repair work in industrial plants.

Nitrogen is the gas most commonly used for inerting

In addition to nitrogen, carbon dioxide can also be used or in exceptional cases, argon. In special industries or applications, inerting mixtures are used. In welding shielding gas mixtures, argon is combined with hydrogen, carbon dioxide, nitrogen and helium.
Food package protective gases typically use gas mixtures that combine carbon dioxide, nitrogen and oxygen with other gases according to the needs of each food.

Heat treatment furnaces typically use nitrogen, argon, hydrogen and other gases.

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With Linde Linde Nitrogen Services you can optimize your gas supply

Every company must periodically perform varying extents of maintenance. Although this is often planned, there are unfortunate occasional urgent situations. We would be pleased to work with you on an action plan that enables you to quickly get back online without sacrificing any quality or safety.

  • ● Purging with nitrogen
  • ● Inerting with nitrogen
  • ● Drying with nitrogen
  • ● Blanketing with nitrogen
  • ● Pressure testing with nitrogen
  • ● Network buffering with nitrogen

Would you like to learn more or ask for advice about inerting processes?