Choosing the Right Nitrogen Compressor

Nitrogen is used for a wide variety of applications due to its inert nature, providing an ideal protective atmosphere that protects sensitive materials or equipment from harmful atmospheric gasses, moisture and contamination. In most cases, nitrogen is supplied in high pressure gas bottles and is transferred and boosted into a high-pressure storage tank using a nitrogen compressor before it can be used.

Who makes Nitrogen compressors?

Nitrogen Compressors are used to pressurize devices such as relief valves, pulsation dampeners and more from commercially filled nitrogen gas cylinders, ensuring the equipment can handle the pressure of its application without leakage. Nitrogen gas compressors are also used to charge nitrogen-filled accumulators to higher pre-charge pressures than what is available in gas cylinders, allowing users to maximize their supply of low-cost nitrogen by avoiding the need for frequent refilling.

Choosing the right nitrogen compressor will depend on the purity level required. High-purity applications such as pharmaceuticals coating tablets require a very pure form of nitrogen, typically above 99.9%, and a PSA (Pressure Swing Adsorption) or Membrane nitrogen generator will be more suitable.

A PSA nitrogen generator separates nitrogen from pressurised ambient air through the use of Carbon Molecular Sieve material. This is a highly porous material that has an ability to adsorb under pressure right down to the molecular level, as compressed air passes over the CMS it strips oxygen molecules away leaving nitrogen. These CMS systems also usually include a drying system that removes moisture and oil from the compressed air supply, prior to reaching the CMS.