There are many reasons to produce Nitrogen on-site instead of purchasing it from an outside vendor. Benefits of nitrogen generation include: operation without interruption from changing cylinders, fixed and substantially lower costs (50% to 300% over bulk liquid, dewars, and cylinders), ease of install, quality and purity, and environmental sustainability.
According to Parker Balston, “Gas industry sources indicate that an air separation plant uses 1976 kJ of electricity per kilogram of nitrogen at 99.9%. Generation of 99.9% nitrogen in house using a PSA system is 1420 kJ. That means up to 28% fewer greenhouse gases are created by the generation of electricity with a typical nitrogen generator. At a purity of 98%, the energy required for in- house nitrogen drops to 796 kJ/kg. That means that in-house generation creates 62% fewer greenhouse gases from electrical power at that purity.”
Nitrogen is used in several industries and inside applications where the reduction of oxygen is necessary:
GENERON Nitrogen PSA Generators separate nitrogen from compressed air utilizing Pressure Swing Adsorption (PSA) technologies. Compressed air, which consists of approximately 21% oxygen and 78% nitrogen, is passed through a bed of Carbon Molecular Sieve (CMS). The CMS preferentially adsorbs O2 and moisture, allowing the N2 to pass through as a product gas at the specified pressure. While one of the towers is in the adsorption phase, the other tower is being regenerated, by de-pressurizing and allowing the CMS to release the adsorbed gases to the atmosphere. The cycle then repeats, allowing for constant flow of a controlled nitrogen purity and flow.
Common Nitrogen Applications:
A single i-Flow nitrogen gas generator system can produce: