Spans Envirotech Logo

Nitrogen Generators

On-site nitrogen generation via PSA and membrane technologies — continuous supply at 95–99.999% purity with rapid return on investment

Overview

About Nitrogen Generators

Nitrogen generators produce a continuous, reliable supply of high-purity nitrogen gas directly at your facility using either Pressure Swing Adsorption (PSA) or membrane separation technology. By generating nitrogen on-site, facilities eliminate the cost, logistics, and safety hazards associated with delivered liquid nitrogen or high-pressure cylinders.

PSA nitrogen generators achieve purities from 95% up to 99.999% and are ideally suited for applications requiring very high purity or high flow rates. Membrane nitrogen generators are compact and cost-effective for moderate purity requirements (95–99.5%), with no moving parts in the separation module. Both technologies are available in modular, expandable configurations to match current demand and scale with future requirements.

Operating costs typically range from $0.02–$0.05 per m³ of nitrogen produced, compared to significantly higher costs for delivered bulk liquid or cylinder nitrogen. Most installations achieve full return on investment within 9 to 24 months, after which nitrogen is produced at near-zero cost. Systems operate 24/7 without scheduled gas deliveries, making supply interruptions a thing of the past.

Industrial PSA nitrogen generator unit

Specifications

Technical Specifications

TechnologyPSA (Pressure Swing Adsorption) or Membrane
Purity Range95% – 99.999% N₂
Typical ROI9 – 24 months
Operating Cost$0.02 – $0.05 per m³
ConfigurationModular, skid-mounted, field-expandable
Operation24/7 continuous duty

Benefits

Key Advantages

  • Eliminates cylinder and liquid nitrogen deliveries — no logistics, no runouts
  • Operating cost 70–80% lower than delivered bulk nitrogen at typical industrial volumes
  • Typical ROI of 9–24 months, then near-zero cost nitrogen indefinitely
  • Modular design allows capacity expansion without replacing the core system
  • PSA option achieves 99.999% purity for the most demanding applications
  • Membrane option provides compact, low-maintenance solution for moderate purity needs
  • Integrated controls with purity monitoring and automatic shutdown on off-spec gas

Applications

Industries & Use Cases

Food Packaging — Modified Atmosphere (MAP)Laser Cutting & Metal FabricationElectronics Manufacturing & Reflow SolderingPharmaceutical Blanketing & PurgingHeat Treating & Metal AnnealingBeverage Dispensing & Wine PreservationTire Inflation (Aviation & Motorsport)Chemical Processing & Tank BlanketingOil & Gas Pipeline Purging

Get a Quote or Technical Consultation

Our engineers can help you select the right nitrogen generators configuration for your application.