PSA Industrial Nitrogen Generator for Manufacturing Plants – nGEN by Absstem
Absstem’s nGEN is a PSA (Pressure Swing Adsorption) based on-site industrial nitrogen generator built for manufacturing plants that require continuous, high-purity nitrogen without cylinder or liquid nitrogen dependency. Unlike packaged machines, nGEN is delivered as a fully engineered, installed, and commissioned PSA nitrogen system – supplying nitrogen directly to your production lines at the required purity, pressure, and flow. nGEN is trusted across laser cutting, food and beverage, pharmaceuticals, electronics, oil and gas, chemical processing, tyre manufacturing, 3D printing, and power plant applications – wherever nitrogen quality and uptime directly impact product performance and cost. For smaller applications 1 to 100 Nm³/hr with fast plug-and-play installation and minimal civil work, see nGENX – Absstem’s compact PSA nitrogen generator for SMEs and space-constrained manufacturing facilities.
10-Year
CMS Performance Warranty
95–99.9995% Purity
Configurable
IIoT Remote Monitoring*
T&C Apply
Made in India
Turnkey Delivered
5–3,000 Nm³/hr
Flow Range
What is a PSA Industrial Nitrogen Generator?
A PSA industrial nitrogen generator produces nitrogen on-site from atmospheric air using Carbon Molecular Sieves (CMS). CMS selectively adsorbs oxygen by kinetic diffusion, allowing nitrogen to pass through at 95%–99.9995% purity. The system runs continuously on electricity alone – no cylinder deliveries, no liquid nitrogen, no PESO storage licence required. Absstem’s nGEN delivers PSA nitrogen at 5 to 3,000 Nm³/hr (Higher Flow Ranges available on custom models). nGEN is built for medium to large manufacturing plants needing 100 Nm³/hr and above. If your nitrogen requirement is below 100 Nm³/hr with plug-and-play setup, see nGENX – Absstem’s compact nitrogen generator for SMEs – instead.
How a PSA Nitrogen Generator Works
Carbon Molecular Sieve (CMS) – Technology Behind nGENX
The Carbon Molecular Sieve is the core separation medium in every PSA nitrogen generator. CMS is a specially engineered form of activated carbon with a precisely controlled pore size distribution that enables it to separate oxygen from nitrogen by kinetic selectivity.
How CMS works: Under pressure, oxygen molecules (smaller, faster diffusing) preferentially enter CMS micropores and are retained. Nitrogen molecules (larger, slower diffusing) pass through the void spaces as product gas. When the CMS bed becomes saturated with oxygen, pressure is reduced (the ‘swing’), oxygen desorbs and vents to atmosphere, and the CMS bed regenerates – ready for the next adsorption cycle.
CMS performance determines maximum achievable purity (95%–99.90%), energy consumption (air-to-nitrogen ratio), and long-term operating cost. Absstem’s nGENX uses premium-grade CMS with optimised pore structure for India’s operating conditions. Absstem backs nGENX with a 10-year sieve warranty – The first Indian industrial PSA Nitrogen manufacturer that provides this.
The efficiency of the Nitrogen Plant is calculated based on the Air-to-Nitrogen Ratio. The better the efficiency, the lower the air-to-Nitrogen ratio. Through continuous R&D, Absstem commits to the best air-to-nitrogen ratio in the industry.
No other Indian PSA nitrogen competitor publicly commits to a 10-year CMS warranty.
| CMS Parameter | nGEN Specification |
|---|---|
| CMS Type | Carbon Molecular Sieve (premium grade) |
| Separation Mechanism | Kinetic diffusion – oxygen selectively adsorbed over nitrogen (Pressure Swing Adsorption) |
| Output Purity Range | 95% to 99.90% N₂ – configurable at commissioning |
| CMS Performance Warranty | 10 years – no Indian competitor matches this |
| Sensitivity | Sensitive to moisture and oil – Absstem’s pre-treatment protects CMS |
| Pressure Dew Point | Below 5°C at PSA inlet (maintained by integrated dryer) |
| CMS Lifespan | 10–12 years standard; 10 years under Absstem’s warranty conditions |
Typical Performance of PSA Nitrogen Plant
| Parameter | nGEN Capability |
|---|---|
| Nitrogen Purity | 95% to 99.9995% |
| Nitrogen Flow | 5-3000 Nm³/hr |
| Delivery Pressure | Up to 350 kg/cm²g (with booster compressors) |
| Operation | Continuous 24×7 | Automatic idle mode | Auto-restart on demand |
| Remote Monitoring* | IIoT-enabled: real-time purity, pressure, flow, compressor & CMS status on laptop, desktop or phone etc. |
| Compressor Options | Oil-free or oil-lubricated (oil-free recommended for food/pharma) |
| Pre-Treatment | Multi-stage filtration + air dryer |
| Air-to-N₂ Ratio | Industry best – lowest in class at equivalent purity (reduces electricity cost) |
| Certifications | ISO 13485:2016 (TÜV Nord) | ISO 9001:2015 | ISO 14001:2015 | ISO 45001:2018 |
*Terms & conditions apply
nGEN Models – Right-Sized for Every Application
| Series | Flow Range | Pressure | Purity | Applications |
|---|---|---|---|---|
| HF Series | 5-3000 Nm³/hr | 5.5–6 barg (optional up to 8–8.5 barg) | 95–98% | Petrochemical Industries, Oil and Gas Inerting, Fire and Explosion Prevention, Plastics Manufacturing |
| SH Series | 5-3000 Nm³/hr | 5.5–6 barg (optional up to 8–8.5 barg) | 99–99.95% | Food and Beverages, Pharmaceutical, Industrial Moulding, Chemical Blanketing |
| UH Series | 5-3000 Nm³/hr | 5.5–6 barg (optional up to 8–8.5 barg) | 99.99 - 99.9995% | Laser Cutting, Electronics and Semiconductor Manufacturing, Pharmaceuticals, Metallurgy |
Delivered as a Complete On-Site Nitrogen System
nGEN is supplied as a fully integrated PSA nitrogen generation system, not as standalone equipment. Each system includes:
PSA nitrogen generator modules (Carbon Molecular Sieve adsorber vessels)
Air compressor(s) with integrated dryer and multi-stage filtration
Nitrogen storage tanks and safety systems
HD touchscreen HMI
Complete on-site installation and commissioning
Operator training, & long-term AMC and CMC through Absstem Shield
Why Industrial Plants Choose PSA Nitrogen Generator
Lowest Cost of Nitrogen Production
Optimised air-to-gas ratios and energy-efficient PSA cycles deliver the lowest cost per Nm³ of nitrogen compared to cylinders or bulk liquid nitrogen
Stable Purity for Process Reliability
nGEN maintains consistent nitrogen purity, pressure, and flow, even during fluctuating production loads
No Cylinder or Cryogenic Logistics
Cylinder handling. Storage risks. Transport delays. Vendor dependency
Designed for Continuous Manufacturing
Built for 24×7 industrial duty cycles with minimal downtime
Technology & Reliability of On-Site PSA Nitrogen Plant
10-year molecular sieve performance warranty
IIoT-enabled monitoring* & alerts
Automatic idle mode with auto start/stop
Industrial-grade HD touchscreen HMI
AMCs and CMCs by Absstem Shield for continuous uptime
PSA vs Cylinder Nitrogen – Which is Right for Your Plant?
| Factor | Cylinders | LIN | PSA Nitrogen (nGEN) |
|---|---|---|---|
| Cost per Nm³ | ₹ 600-1000 | ₹15-25 | ₹1.80 (95%) - ₹10.60 (99.9995%) Read more about Nitrogen cost |
| Purity range | 99.9-99.9998% (fixed) | 99.99998% | 95-99.9995% |
| Flow range | Limited by delivery | Limited by delivery | 5-3000 Nm³/hr |
| PESO licence | Required for storage | Required for storage | Not required |
| Supply reliability | Delivery-dependent | Delivery-dependent | 24/7 on-site |
| IIoT monitoring | None | None | Add-on Facility on every nGEN |
| CMS warranty | N/A | N/A | 10 years (nGEN exclusive) |
What Does nGEN Cost? – And What Will You Save?
| Application | Per Day Cylinder consumption | Monthly Saving | Payback |
|---|---|---|---|
| Laser Cutting (Small Setup) | 10-50 | ₹ 1.2-5 lakh | 14–22 months |
| Food Packaging / Pharma (50 Nm³/hr) | 10-50 | ₹1.5-7 lakh | 8–16 months |
| Electronics Plant | 10-50 | ₹1.4-6.2 lakh | 10–20 months |
| Chemical / Oil & Gas | Variable | Variable | 6–18 months |
Note: Cylinder cost at ₹ 600-1000/Nm³ (India 2025–26 benchmark). nGEN running cost ₹1.8–10.6/Nm³ (electricity only). Investment and payback are indicative – use Absstem’s free ROI calculator for exact plant-specific figures.
Calculate your plant’s exact savings in 2 minutes
Industries Using On-Site Industrial Nitrogen Generator
Oil & Gas
Support pipeline purging, pressure testing, tank blanketing, and shutdown maintenance with continuous on-site nitrogen without cylinder logistics.
Metal Processing & Heat Treatment
Use nitrogen for annealing, sintering, brazing, and heat treatment to prevent oxidation and achieve consistent surface finish and strength.
Chemical Industry
Provide reliable nitrogen for purging, blanketing, and inerting to enhance plant safety, prevent reactions, and ensure stable chemical processing.
Food & Beverage Packaging
Ensure longer shelf life, prevent oxidation, and maintain taste, texture, and quality with continuous nitrogen supply for MAP, nitrogen flushing, and packaging operations.
Pharmaceuticals
Maintain contamination-free environments with ultra-high purity nitrogen for blanketing, drying, packaging, and cleanroom manufacturing applications.
Tyre Manufacturing
Improve tyre curing, inflation stability, and product consistency using clean, dry nitrogen while reducing moisture-related defects.
Laser Cutting & Fabrication
Achieve burr-free edges, oxidation-free surfaces, and superior cutting performance with high-pressure nitrogen assist gas directly from your plant.
Electronics & Semiconductor Assembly
Protect sensitive components during soldering, reflow, and assembly with controlled nitrogen atmospheres for improved yield and reliability.
Power Plants
Use nitrogen for boiler preservation, inerting, and purging to protect critical equipment, reduce corrosion, and improve plant reliability.
3D Printing
Maintain oxygen-free environments in metal 3D printing processes to enhance part quality, strength, and repeatability.
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Absstem’s all-inclusive AMC ensuring 24×7 uptime, preventive care, and remote support for oxygen and nitrogen systems.
Trusted By Thousands
FAQs – nGEN (Industrial Nitrogen Generator)
Is nGEN a nitrogen generator or a nitrogen plant?
nGEN is a PSA nitrogen generator delivered as a complete on-site nitrogen plant. It includes air compressors, PSA nitrogen generation modules, storage tanks, controls, installation, and commissioning. At Absstem, nGEN is supplied as a fully engineered nitrogen system, not just standalone equipment.
How does a PSA nitrogen generator work?
A PSA nitrogen generator works by separating nitrogen from compressed atmospheric air using carbon molecular sieves. Oxygen and trace gases are adsorbed, while nitrogen passes through and is collected in storage tanks. The system operates automatically in cycles to deliver continuous, on-site nitrogen at the required purity, pressure, and flow for industrial processes.
Can nGEN replace nitrogen cylinders and liquid nitrogen completely?
Yes. nGEN is designed to act as the primary nitrogen source for industrial operations. It eliminates cylinder handling, refilling delays, storage risks, and dependence on external nitrogen suppliers while providing uninterrupted 24×7 nitrogen supply.
What nitrogen purity and flow can nGEN deliver?
nGEN can deliver nitrogen purity from 95%–99.9995%, with flow capacities 5–3000 Nm³/hr, depending on the application. The system is engineered based on actual process demand to ensure stable purity, pressure, and flow.
Which industries are best suited for nGEN industrial nitrogen generators?
nGEN industrial nitrogen generator is widely used in food processing, pharmaceuticals, electronics, semiconductor manufacturing, metal fabrication, laser cutting, chemical plants, oil & gas, power plants, and tyre manufacturing-where nitrogen quality, uptime, and cost control are critical.
What is the difference between nGEN and nGENX?
nGEN is Absstem’s full-scale custom-engineered PSA nitrogen generator for medium to large manufacturing plants – 5–3,000 Nm³/hr, 95%–99.9995% purity, high-pressure booster option for laser cutting at 15–40 bar, full civil and piping scope. nGENX is Absstem’s compact, skid-mounted, plug-and-play nitrogen generator for SMEs – 5–100 Nm³/hr, 95%–99.90% purity, minimal civil work, faster installation. If your nitrogen requirement is below 100 Nm³/hr or you need a quick-install compact system, see nGENX instead.
What maintenance does nGEN need?
Routine nGEN maintenance: air filter replacement (monthly), compressor servicing (quarterly), desiccant dryer bead check (annually), IIoT-monitored* CMS performance (continuous). The Carbon Molecular Sieve is performance-warranty for 10 years under normal operating conditions. Absstem Shield provides AMC and CMC with guaranteed uptime SLAs and pan-India service coverage.
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