PSA Nitrogen Generation Plant, purity proven to 99.999% N₂.

Why on-site PSA nitrogen generation matters

The Neometrix PSA Nitrogen Generation Plant is an advanced on-site nitrogen production system designed for industrial applications requiring high-purity nitrogen. Using Pressure Swing Adsorption (PSA) technology, it efficiently separates nitrogen from atmospheric air through Carbon Molecular Sieve (CMS) adsorption, ensuring a continuous, cost-effective, and reliable nitrogen supply. With purity levels ranging from 95% to 99.99%, this system eliminates the need for nitrogen cylinders or liquid nitrogen storage, significantly reducing operational costs.

Manufactured by Neometrix Group, the plant is a state-of-the-art on-site nitrogen production system designed to deliver a continuous and high-purity nitrogen supply. This eliminates the need for nitrogen cylinders or liquid nitrogen storage, significantly reducing operational costs and dependency on external suppliers. The generator is engineered to meet the demands of industrial, medical, pharmaceutical, chemical, aerospace, food processing, and electronics sectors, ensuring high efficiency, reliability, and minimal maintenance.

Working principle — PSA technology

The system is based on the Pressure Swing Adsorption (PSA) principle, which utilizes selective adsorption to separate nitrogen from compressed air. The process is fully automated and cyclic, ensuring a constant supply of high-purity nitrogen:

• Air compression, drying & filtration: Ambient air is compressed using an air compressor, then passed through refrigerant or desiccant dryers to remove moisture. Pre-filters and fine filters remove dust, oil, and contaminants before the air enters the PSA unit.
• Selective oxygen adsorption on CMS beds: The system consists of two adsorption towers filled with Carbon Molecular Sieve (CMS). When dry compressed air enters the first tower, CMS selectively adsorbs oxygen, carbon dioxide, and other trace gases, allowing nitrogen to pass through as the product gas.
• Automatic tower switching & pressure equalization: Before the CMS in the first tower becomes fully saturated, the system automatically switches to the second tower. Simultaneously, a pressure equalization step occurs, reducing energy consumption and enhancing efficiency.
• Oxygen desorption & regeneration: The CMS in the first tower is regenerated by depressurization, releasing the adsorbed oxygen and waste gases into the atmosphere. The tower is then ready for the next cycle.
• Nitrogen storage & delivery: The purified nitrogen gas is collected in a nitrogen buffer tank at the required purity and pressure, ensuring a stable supply to downstream applications.

Technical specifications

Outstanding features & advantages, in detail

1. High reliability & durability

Constructed with high-quality stainless steel components and industrial-grade PLC controls. Designed for continuous 24/7 operation with minimal wear and tear.

2. Energy efficiency & cost savings

Uses low-energy PSA technology to significantly reduce nitrogen production costs. Eliminates the need for expensive nitrogen cylinders and liquid nitrogen storage.

3. Customizable & scalable design

Available in multiple capacity ranges, with purity and pressure adjustable as per customer needs. Modular design allows for future expansion without major system modifications.

4. Easy installation & integration

Pre-assembled and factory-tested for quick setup. Compact footprint for easy integration into existing facilities.

5. Advanced automation & monitoring

User-friendly PLC control panel with touchscreen HMI for real-time monitoring of nitrogen purity, pressure, and system status. Automated alarms and notifications for maintenance and troubleshooting.

6. Safety & compliance

Equipped with pressure relief valves, automatic emergency shutdown, and gas purity monitoring sensors. Meets ISO 8573 Class 4 air quality standards for safe and clean nitrogen production.

7. Low maintenance requirements

No moving parts in the adsorption system, reducing wear and maintenance costs. CMS bed lifespan of 8–10 years with proper usage and maintenance.

System components & their functions

The PSA Nitrogen Generator consists of the following key components:

• Adsorption towers (two towers): Contain Carbon Molecular Sieve (CMS), which selectively removes oxygen and impurities while allowing nitrogen to pass.
• Air dryer: Removes residual moisture from the compressed air, preventing contamination and improving efficiency.
• Pre-filters & fine filters: Ensures clean and dry compressed air before entering the PSA system.
• Electronic control valves: High-performance solenoid valves regulate adsorption, equalization, and regeneration cycles.
• Pressure regulators & gauges: Monitors and controls nitrogen pressure levels for safe operation.
• Nitrogen purity analyzer: Real-time nitrogen purity monitoring system ensures product gas meets the required specifications.
• Silencer & auto drain valves: Reduces noise emissions and removes excess condensate from the system.
• Control panel with HMI & PLC: Fully automated operation with real-time monitoring and alarm notifications.

Operation & maintenance

Startup procedure

• Turn on the power supply and set the desired nitrogen purity.
• Open the air supply valve and allow the system to stabilize.
• The adsorption cycle begins automatically, and nitrogen starts accumulating in the storage tank.
• Once the system achieves the required purity, nitrogen is ready for use.

Shutdown procedure

• Close the nitrogen outlet valve to maintain system pressure.
• Turn off the power supply and depressurize the towers.
• Drain any accumulated moisture and contaminants.

Maintenance schedule

• Daily: Check system pressure, inspect for leaks, and monitor nitrogen purity.
• Monthly: Inspect and clean filters, check silencers, and verify automation settings.
• Six-monthly: Replace pre-filters, fine filters, and moisture separators.
• Annually: Inspect solenoid valves, check CMS bed condition, and calibrate purity sensors.
• Every three years: Replace Carbon Molecular Sieve (CMS) for peak efficiency.

Applications across industries

The PSA Nitrogen Generation Plant is widely used across multiple industries due to its efficiency, reliability, and high purity output. Key applications include:

• Food & beverage industry: Used for modified atmosphere packaging (MAP) to prevent oxidation and extend product shelf life.
• Pharmaceutical & medical: Ensures a sterile, inert atmosphere for drug manufacturing, preservation, and laboratory research.
• Electronics & semiconductor industry: Provides ultra-pure nitrogen for soldering, circuit board assembly, and cleanroom operations.
• Chemical & petrochemical: Used in blanketing, purging, and inerting to prevent hazardous reactions.
• Metal processing & heat treatment: Supports annealing, sintering, and welding processes by eliminating oxidation.
• Aerospace & automotive: Provides controlled environments for fuel tank blanketing and component testing.
• Oil & gas industry: Used in well drilling, pipeline purging, and tank blanketing.

On-site, skid-mounted & modular platforms

Modern industries demand reliable, efficient, and cost-effective nitrogen supply solutions. Using Pressure Swing Adsorption Nitrogen Systems, facilities can eliminate reliance on cylinder deliveries and bulk liquid supplies. Flexible platforms such as the On-Site Nitrogen Generator, Skid Mounted Nitrogen Generator, and Modular PSA Nitrogen Unit are designed for easy installation, with options like the Plug and Play Nitrogen Generator offering rapid deployment.

Industry-specific applications are well supported. The Nitrogen Generator for Food Packaging ensures freshness and extended shelf life, while the PSA Nitrogen Plant for Laser Cutting provides clean, dry nitrogen for precision cutting. In pharmaceuticals and electronics, the Nitrogen System for Pharmaceuticals and Nitrogen Generator for Electronics Industry maintain controlled, contamination-free environments. Robust industrial demand is met by the Industrial Nitrogen Gas Generator, Industrial PSA Nitrogen Generator, and Custom Nitrogen Generation Skids, which can be tailored to plant-specific flow and purity requirements.

Conclusion

The Neometrix PSA Nitrogen Generation Plant is a high-performance, cost-effective, and low-maintenance solution for industries requiring a reliable nitrogen supply. With advanced automation, modular scalability, and energy-efficient design, it is an ideal alternative to traditional nitrogen sources, offering a quick return on investment and long-term operational benefits.