PSA Nitrogen Plant

Capacity from 1 Nm3/hr. To 2000 Nm3/hr.
Purity varies : 95% to 99.9999%


The PSA Process

PSA (Pressure Swing Adsorption) is an advanced gas separation technology, based on the physical adsorption of the internal surface in the adsorbent to gas molecules, separating the gas by the characteristics of absorbing to the quantity of different gas in general pressure. The CMS (Carbon Molecular Sieve) is adsorbent picked up from the air, used in separating Oxygen and Nitrogen molecular. The absorption quantity of CMS is greatly higher for Oxygen than Nitrogen under the same pressure.

PSA Nitrogen Generator produces N2 gas, using air as raw materials and carbon molecular sieve as adsorbent, by the selective adsorption of carbon molecular sieve to O2 and N2, achieving the separation of the N2 and O2 in the air.

Working Principle of a Psa Nitrogen Gas Plant

The standard PSA system used by PSA nitrogen gas plant manufacturer comprises of four major process: Feed Air compression; Feed Air Pre-treatment; Adsorption/Desorption; Product Delivery.

Normally Atmospheric air is elevated to high pressure by a packaged air compressor. decreasing temperature and mouser with the help of cooler and moisture separator. The high-pressure feed air passes through a mist eliminator to remove water droplets and entrained oil partials from the air. The air then passes through the carbon filter to remove oil vapors prior to entering the buffer tank. The treated air enters an adsorption tower where it is filled with activated carbon molecular sleeves (CMS) for removing oxygen from the air and separate nitrogen with desired purity. This PSA system consists of two separate but identical pressure vessels commonly referred as “dual” or “twin” towers. In that one tower is in Adsorption cycle (Online) and another tower in regeneration cycle (off Line).

When the oxygen capturing capacity of the on stream adsorption tower is diminished, the feed flow process valves switch to a second adsorption tower. The first adsorption tower is then depressurized rapidly and purged to remove the adsorbed oxygen. When the second bed becomes saturated with oxygen, the feed flow process valves switch back to the first adsorption tower and the cycle begins again. The purified Nitrogen enters a nitrogen receiver tank that provides gas to the absorber vessels during product re pressurization and nitrogen buffer capacity. The nitrogen purity is continuously monitored by an oxygen analyzer prior to delivery to the customer houseline.  PSA nitrogen generator plant manufacturers in India are manufacturing effective PSA nitrogen plants that are energy efficient.


Pressure Swing Adsorption

Product Options

  • Product flow meter
  • Auto / Shutdown mode
  • Vent circuit
  • Optional cylinder filling system with booster compressor.
  • Remote monitoring, controlling and communications capability
  • Purity control setting
  • PLC with HMI display (Air Pressure, N2 Pressure and Purity, System Run Status, Run Hours, Maintenance Timer, and Alarm Notification)

Product Standard Components

  • Fully automatic control panel with 1W+1S PLC
  • Air compressor
  • Air dryer
  • Air filters
  • Air buffer tank
  • Adsorbed vessels
  • Specially selected adsorbent material
  • On/off valves
  • Instruments
  • PSA buffer tank
  • Nitrogen product O2 analyzer
  • Nitrogen product compressor, if required

Product Standard Features / Specification

  1. Nitrogen purity from 95% to 99.999%
  2. Nitrogen flow capacities from 1 m3/hr. (0.6 CFM) to 2000 m3/hr. (1200 CFM)
  3. Delivery pressure up to 7.5 bar(g) / 110 psig
  4. Easy to maintain with continuously monitored purity and flow.
  5. Produces a continuous supply of ≥99.999% purity nitrogen 24 hours a day
  6. Pre-piped system for easy and simple installation.
  7. Ready to use upon delivery.
  8. Dependable highest reliability with energy efficiency. Simple structure, compact design, full skid based unit with fully automated operation with one touch start up and one touch shut down.


  • Biotechnology and life science industries.
  • Purging/blanketing in chemical industries
  • Heat treatment Furnaces
  • Packing of food / snacks
  • Preventing fire in coal mines
  • Inertization in Cement plants
  • Petrochemical plants
  • West water treatment and west disposal industries
  • Pharmaceutical industries
  • Use in injectable application
  • Steel industries
  • Pulp and paper industries
  • Oil & gas Industries
  • Autoclave segment
  • Power sector
  • Electronics industries
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