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Nitrogen Gas Generators
On-Site. On-Demand.

Generate high-purity nitrogen gas on-site using PSA (Pressure Swing Adsorption) technology. Eliminate cylinders and liquid nitrogen costs — produce your own N₂ at a fraction of the cost.

99.999%
Max Purity
3–3000
Nm³/hr Range
5–10 bar
Output Pressure
<3 yrs
Typical ROI
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Nitrogenium PSA Nitrogen Generator Unit
5–960
Nm³/h
99.999%
Max Purity
6–10
Bar Inlet
24/7
Operation
Our Product

Nitrogenium Modular
Nitrogen Generator

A complete on-site PSA nitrogen generation system — compressor pre-treatment, dual CMS adsorption towers, buffer tank and PLC control all engineered together. Delivers industrial-grade nitrogen from your existing compressed air line, continuously, without cylinders or deliveries.

Adjustable Purity — 95% to 99.999%
Set purity to exactly what your process needs. Real-time O₂ analyser continuously monitors output and diverts off-spec gas automatically.
Modular & Scalable Design
Start with the capacity you need today. Add modules as your demand grows — no need to replace the whole system when you expand production.
Fully Automated — Zero Operator Input
PLC-controlled cycle management with touchscreen HMI. Starts, stops and regulates itself based on demand. Remote alarm outputs via Modbus or volt-free contacts.
ROI Within 2–3 Years, Then Near-Zero Cost
Up to 90% lower cost per Nm³ vs cylinder supply. No rentals, no refill logistics, no purity variation between batches. The CMS sieve never needs replacing.
Minimal Maintenance — Only Pre-filters
Annual pre-filter element change is the only routine consumable. CMS beds, valves and control system are designed for 10–15 year service life under normal conditions.
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Industries We Serve

Nitrogen Generator Applications

Laboratory and research facility using high-purity nitrogen gas

Laboratory & Research

IIT, CSIR, pharmaceutical labs, R&D centres. Purity 99.999% for LC-MS, GC, NMR and analytical instruments.

Food and beverage packaging line using nitrogen MAP atmosphere

Food & Beverage

MAP packaging, blanket gas for storage, wine preservation, snack bag inflation. Food-grade purity 99.5–99.9%.

Laser cutting metal with nitrogen assist gas in industrial factory

Metal Processing

Laser cutting, heat treatment, annealing, bright annealing. Protects metals from oxidation during high-temperature processes.

Pharmaceutical manufacturing blanketing and packaging with nitrogen

Pharmaceutical

Blister packaging, tablet coating, API processing, lyophilization. Meets GMP and USP standards for nitrogen purity.

Oil and gas pipeline purging and inerting with nitrogen

Oil & Gas

Pipeline purging, pressure testing, tank inerting, fire suppression. Reliable on-site generation for remote locations.

Electronics SMT soldering with nitrogen atmosphere to prevent oxidation

Electronics

SMT soldering, reflow ovens, wave soldering, semiconductor manufacturing. Prevents oxidation for superior solder joints.

The Science Behind It

How PSA Nitrogen Generation Works

Pressure Swing Adsorption (PSA) is the technology that lets you produce unlimited high-purity nitrogen on-site — from your existing compressed air — without any chemicals, cryogenics or deliveries.

Process Flow — Step by Step
Compressed Air
From your compressor at 6–10 bar
Pre-treatment
Filters remove oil, water & dust particles
BED A
Adsorbing
BED B
Regen.
CMS Towers
Carbon Molecular Sieve separates O₂ from N₂
N₂ Buffer Tank
Stores & stabilises output pressure
Pure N₂ Output
95%–99.999% purity to your process

The Alternating Dual-Bed Cycle

PHASE 1
🔴
Bed A — Adsorption
~60 seconds
  • Compressed, pre-treated air enters Bed A at high pressure (6–10 bar)
  • Carbon Molecular Sieve (CMS) pores trap O₂ and CO₂ molecules — they are smaller and adsorb faster
  • Larger N₂ molecules pass straight through — collected at 95%–99.999% purity
  • N₂ flows into buffer tank, maintaining steady output pressure
PHASE 2
🔵
Bed B — Regeneration
Simultaneous — no downtime
  • While Bed A produces N₂, Bed B is depressurised to atmospheric pressure
  • The sudden pressure drop releases adsorbed O₂ and CO₂ — they are vented to atmosphere
  • A small back-purge of pure N₂ flushes the bed, restoring full adsorption capacity
  • Beds switch roles every ~60 s — continuous N₂ production, 24/7, with no operator input
💡
No consumables, no chemicals, no heat. The CMS does not degrade during regeneration — a well-maintained PSA system runs for 10–15+ years with only periodic pre-filter element changes.
The Core Material

What is Carbon Molecular Sieve (CMS)?

CMS is a specially engineered form of activated carbon with extremely uniform micropores — typically 0.28–0.38 nm in diameter. This pore size is the critical design parameter: it's just big enough to allow oxygen (kinetic diameter 0.346 nm) to slip in quickly, but nitrogen (kinetic diameter 0.364 nm) passes through before it can adsorb.

The difference in adsorption rate between O₂ and N₂ is what PSA exploits — not a difference in molecule size, but in how fast each gas fills the pore. O₂ saturates the CMS in ~60 seconds; N₂ barely adsorbs in that same window.

Physically regenerates — never needs replacement (only periodic inspection)
No chemical reaction — fully inert process, no hazardous by-products
Works at ambient temperature — no heating or cooling required
Air Composition — What Enters vs What Leaves
Nitrogen (N₂) — enters78%
Oxygen (O₂) — enters21%
Argon + other — enters1%
N₂ output — high purity99–99.999%
O₂ vented — waste gas<1%

Purity vs Flow — The Critical Tradeoff

Higher purity means the CMS beds must work harder per Nm³ — so for the same generator, increasing purity reduces flow capacity. Getting this balance right at the design stage is essential.

N₂ Purity O₂ Residual Relative Flow Yield Typical Applications Recommended Grade
95% 5% O₂
High (100%)
Fire prevention, tank blanketing, tyre inflation Standard
99% 1% O₂
Medium (72%)
Food MAP packaging, laser cutting, wine Common
99.9% 0.1% O₂
Lower (48%)
Electronics SMT, pharma blanketing, heat treatment High Grade
99.999% 10 ppm O₂
Low (22%)
LC-MS, GC carrier gas, semiconductor fab, lab Ultra Pure

* Flow yield values are approximate at 7 bar inlet. Actual values depend on generator model and inlet conditions.

Key System Components

🌬️
Pre-treatment Filters

Coalescing + activated carbon filters remove oil aerosols, moisture and particulates from compressed air before it reaches the CMS. Essential — oil contamination permanently damages CMS beds.

🏛️
CMS Adsorption Towers

The heart of the generator. Two towers packed with Carbon Molecular Sieve alternate between adsorption and regeneration every 60 seconds, ensuring continuous N₂ output.

⚙️
Pneumatic Valve Manifold

Fast-switching pneumatic valves direct airflow between towers. High-cycle valves rated for millions of operations — typically maintenance-free for 5+ years.

📦
N₂ Buffer / Surge Tank

Smooths out the pressure pulses from alternating beds. Sized to your peak demand — typically 3–10× the generator's hourly output — to prevent N₂ starvation during high-draw periods.

🎛️
O₂ Purity Analyser

Real-time electrochemical O₂ sensor monitors N₂ purity continuously. If purity drops below setpoint, an automatic divert valve redirects off-spec gas to atmosphere — protecting your process.

🖥️
PLC Control System

Omega Air generators run on a dedicated PLC with touchscreen HMI. Monitors all parameters — inlet pressure, O₂ purity, cycle counts — and can trigger remote alarms via volt-free contacts or Modbus.

Why Generate On-Site vs Cylinders?

❌ Cylinders / Liquid N₂
  • • High recurring cylinder rental and refill costs
  • • Supply disruptions and delivery delays
  • • Safety risks from high-pressure cylinders
  • • Logistics, storage and handling costs
  • • Purity inconsistency between batches
✅ PSA On-Site Generator
  • • Up to 90% lower cost per Nm³ vs cylinders
  • • Continuous 24/7 supply — no interruptions
  • • Fully automated, safe, unattended operation
  • • ROI typically achieved within 2–3 years
  • • Consistent purity with real-time O₂ monitoring

Get a Custom Nitrogen Generator Quote

Tell us your required purity, flow rate and application — we'll size the right PSA generator for you and provide a detailed ROI calculation.

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FAQs

Frequently Asked Questions

What is a PSA nitrogen generator?
A PSA (Pressure Swing Adsorption) nitrogen generator produces high-purity nitrogen gas on-site by separating nitrogen from compressed air using molecular sieve beds. It eliminates the need for nitrogen cylinders or liquid nitrogen, reducing cost by up to 80%.
What purity levels can Omega Air nitrogen generators achieve?
Omega Air PSA nitrogen generators deliver purity levels from 95% to 99.999% nitrogen, adjustable based on your application — from food packaging and metal processing to electronics and pharmaceuticals.
What is the payback period for a nitrogen generator in India?
Most industrial users in India recover the capital cost within 12–24 months, after which nitrogen production costs virtually nothing compared to ongoing cylinder rental and refill charges.
What flow rates are available?
Omega Air nitrogen generators are available from small lab units producing a few Nm³/h up to large industrial systems producing thousands of Nm³/h. We size the system based on your peak demand and purity requirement.
Do you provide installation and after-sales support in India?
Yes. As the authorised India dealer for Omega Air, Nitrogenium provides site surveys, installation guidance, commissioning support and ongoing after-sales service across India from our Delhi NCR base.
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