PSA Nitrogen Generators

Grasys develops nitrogen generation units based on PSA (Pressure Swing Adsorption) technology to produce high purity nitrogen for fixed installation. The key benefits of adsorption nitrogen generation units are low energy consumption, minimal operating costs, high reliability and ease of control.


up to 10,000 m3/h

Nitrogen purity

up to 99.9995%


up to 35 MPa

Warm-up period

up to 20 minutes

Grasys is ready to offer its customers both off-the-shelf and tailor-made adsorption nitrogen generation units.

Grasys nitrogen generators, operating on the principle of adsorptive air separation, are designed to produce up to 10,000 m³/h of nitrogen with a purity of up to 99.9995%.

Adsorption units can be designed for both indoor and outdoor use.

Nitropower Series Adsorption Generators

The NITROPOWER and NITROPOWER PLUS adsorption nitrogen generators are highly efficient solutions for the production of gaseous nitrogen with a purity of up to 99.999%. Each generator model is available in various configurations with a range of options.

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Nitropower Series Adsorption Generators

Product Images

Product Design Options

Fixed Design

Free equipment placement, on-skid or on-platform design.

Packaged Modular (Transportable)

Modular container or sea container design. Operation in various climatic zones.


Designed on a trailer, skids, as well as in a self-propelled version based on the KamAZ and URAL chassis.

Prefabricated Building

Modular frame building using light steel thin-walled structures and sandwich panels.
Тех. характеристики

Capacity, m³/hup to 10,000

Nitrogen purity, %up to 99.9995

Pressure, MPaup to 35

Dew point temperature, °C−55 to −75

Operating temperature, °C+5 to +40

+5 to +40

Adsorption nitrogen generation units complement the Grasys range of membrane air separation units and produce nitrogen with a purity of over 99.9%, the highest possible level for membrane technology. The operating principle of the units is based on the separation of the air mixture into nitrogen and oxygen using adsorbent materials. Oxygen is absorbed by the adsorbent, while nitrogen passes freely.

The key benefits of adsorption nitrogen generation units are low energy consumption, minimal operating costs, high reliability, and ease of control.

The adsorption systems offered by Grasys can be designed for both indoor and outdoor use. In the latter case, the equipment is available in a box container design and is virtually a self-contained source of gaseous nitrogen. Adsorption units are suitable for a very wide range of applications, particularly where a sufficiently high purity of nitrogen is required. Such units can be used in the chemical, petrochemical, oil and gas, food processing, pharmaceutical, microelectronics industries, etc.

Applications of Grasys PSA Nitrogen Generators

  • Preventing oxidation processes
  • Ensuring explosion and fire safety through air displacement
  • Increasing the well flow rate
  • Testing and purging of pipelines and equipment
  • Hardening, carburising, brazing, annealing, sintering of metals
  • Extending the shelf life of food products
Система управления и контроля

Advanced, Smart GRASYS Intelligent Control-8 Control and Monitoring System

The advanced, smart GRASYS Intelligent Control-8 monitoring and control system ensures the simplest and most convenient control of the GRASYS adsorption nitrogen generation unit.

The GRASYS Intelligent Control-8 monitoring and control system provides:

  • Full control of all unit systems;
  • Manual, automatic and remote control options;
  • The ability to integrate the unit's control system into the factory-wide control system;
  • Emergency interlocks to protect against falling outside the permitted limits of key process parameters;
  • Switching the unit to standby mode under zero nitrogen consumption;
  • A wide range of additional options, including the ability to control unit parameters via the Internet;
  • Archiving the main technical parameters of the unit;
  • The control panel is equipped with an active LCD display and shortcuts to access the most important functions.

Benefits of Grasys PSA Nitrogen Generators

  • The ability to generate high-purity nitrogen
  • Minimum operating costs
  • High degree of reliability and fail-safety
  • Small-sized, lightweight
  • Fully automated, easy to operate
  • No operator supervision required during operation
  • Quick start-up and shut-down of the unit
  • Long operating life of the units

Operating Procedure When Dealing With R&P Co. Grasys


Submit a request on the site or reach our specialist by phone


Grasys expert speaks to you and finds out your needs


You fill out a questionnaire with the desired equipment parameters


Our expert prepares a quotation with the most efficient solutions to your application. Contract to be concluded


We perform engineering, designing, manufacture equipment with its further testing and placing into service, etc


We ship equipment to the operational location and provide a package of documents


We are engaged in start-up operations and equipment commissioning


We provide aftersales service to ensure equipment efficient performance and reliability excellence (optional)

Advantages of Cooperating with R&P Co. Grasys

High-tech Russian manufacture

Implementation of import substitution programs

Hands-on experience in implementing over 1500 projects within 20 years

Manufacturing equipment of any size and level of sophistication

Turnkey projects (EPC-contracts)

Prompt technical support

Information contained herein does not constitute а public offer

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