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Nitrogen Generators

Due to its versatility, nitrogen use is becoming increasingly popular in a number of industries including plastic moulding, chemical, food and beverages and packaging. The key benefit of having an industrial nitrogen generator on-site is cost; up to 40% savings can be made when compared to buying nitrogen cylinders.

Our team of engineers can arrange an initial consultation to help determine the recommended solution for your on-site nitrogen requirements. They will then offer professional, practical advice to ensure you are confident in your choice of nitrogen system.

Glaston engineers are highly qualified and have extensive experience in the installation and maintenance of industrial nitrogen generators. For more information on our recent installations please see our nitrogen generators installations on the case studies page. At Glaston, our team of engineers have expertise in the design, supply, and maintenance of nitrogen generators in the UK.

Download our Nitrogen Generator FAQs for more information.

nitrogen generator glaston

Which type of nitrogen generator is suitable for you?

Dependent on purity, flow rate and a number of other considerations, there are many options when supplying nitrogen. The indicative optimal supply options for nitrogen generators are shown below.

  • Optimal purity range: 90% to 99.0%
  • Optimal flow rate: 1-600 Nm³/h
  • Cost advantage over vendor-supplied liquid: up to 50%

Membrane nitrogen separation became commercially available in the early 1980s. It is the most robust of the nitrogen separation technologies. Compared to Pressure Swing Adsorption (PSA) technology, membranes use more energy, but have lower maintenance costs. Membranes are best suited for purities up to approximately 99%, and nitrogen demand of up to around 600 Nm³/hr.

Oxygen and nitrogen in compressed air are separated by the relative speed of permeation through the side wall of hollow polymer fibres. Oxygen molecules permeate through the fibres faster than nitrogen molecules, enabling them to be selectively exhausted. Nitrogen gas purity increases as the flow proceeds down the fibres. Depending on the residence time in the membrane, nitrogen purity of better than 99.99% can be achieved. If you require higher purity levels, other separation technologies are more cost-effective.

  • Range Purity: 99% to 99.995%
  • Flow rate: 1-1000 Nm³/h
  • Cost advantage over vendor-supplied liquid: up to 50%

Pressure Swing Adsorption (PSA) is cost-effective for on-site nitrogen generation at purities higher than 99% (purities as high as 99.995% are possible), and in high energy cost regions for lower purities down to 97%. The air is separated by compression on a bed of carbon molecular sieve (CMS), which preferentially adsorbs the oxygen. At the same time, in a second drum of CMS, the pressure is lowered, thus releasing the adsorbed oxygen which is exhausted. This bed of CMS now denuded of oxygen is again ready for a further compression cycle of adsorption.

For more information about our range of products and services, or for a bespoke quote please contact us today.

PSA v Nitrogen Generation Infographic

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