Nitrogen and oxygen generators have specific applications in breweries and distilleries, where they contribute to the production process, product quality, and safety. Here are some ways in which nitrogen and oxygen generators are used in the brewing industry:
- Purging and Inerting: Nitrogen is used to purge vessels and pipelines of oxygen to prevent oxidation of the wort and the final beer. Oxidation can lead to off-flavors and reduced shelf life, so nitrogen helps maintain the flavor profile and quality of the beer.
- Headspace Protection: Nitrogen is used to provide a protective blanket in storage tanks and barrels containing beer or other alcoholic beverages. This prevents the ingress of air, which could spoil the product or promote the growth of wild yeasts and bacteria.
- Bottling and Canning: Nitrogen is often used in the bottling and canning process to prevent oxygen pickup, which can lead to oxidation and stale flavors in packaged beers. It is also used to create a counterpressure that helps maintain carbonation.
- Carbonation Control: Nitrogen can be used to adjust the level of carbonation in beers, providing a smoother mouthfeel and enhancing the drink’s overall sensory experience. This is particularly useful in craft beers where specific carbonation levels are desired.
- Cleaning and Sanitization: Nitrogen can play a role in cleaning and drying processes, helping to remove water and contaminants from equipment without leaving residues that could affect beer quality.
- Oxygen Supplementation: While nitrogen is primarily used for its inert properties, oxygen generators may have limited use in certain aspects of brewery operations, such as aeration during the fermentation process, where controlled amounts of oxygen can be beneficial for yeast health and activity.
- Safety Systems: In some cases, nitrogen may be used as part of safety systems to inert areas where flammable liquids or gases are handled, reducing the risk of fires or explosions.
The use of onsite nitrogen and oxygen generation provides breweries with a reliable and economical source of these gases, ensuring uninterrupted supply and high purity levels that are critical for maintaining the quality and consistency of beer products. Additionally, onsite generation eliminates the risks associated with storing and transporting compressed gas cylinders, enhancing overall plant safety and reducing operational costs.
