Membranes for Nitrogen Generation


  • Nitrogen generation (with a purity of up to 99.9%) from atmospheric air
Тех. характеристики

Diameter, " 8

Feed gas pressure, MPa up to 1.6

Membrane pressure drop, MPa up to 1.6

Feed gas temperature, °С 10 to 60

The principle of membrane separation of a gas mixture is based on the different penetration rates of its components through a polymeric membrane due to the differential partial pressures of the gas on either side of the membrane.

Membrane gas separation technology is widely used throughout the world to extract nitrogen from air, extract hydrogen from hydrogen-bearing gas mixtures, and extract carbon dioxide and water from natural gas.

Grasys Membrane Cartridges

  • High selectivity
  • High specific membrane surface area
  • Wide pressure range (up to 13 MPa)
  • Low pressure loss during separation
  • Excellent chemical stability

Grasys Cartridge-Based Membrane Units

  • Low capital and operating costs
  • Easy to install and maintain
  • Compact unit dimensions
  • Removal of several impurities in a single process cycle
  • Environmentally friendly technology (no chemicals used)


  • Oil and Gas Industry
    Nitrogen is used to create inert atmospheres to ensure explosion and fire safety of processes, to test and purge pipework and process equipment.
  • Chemical and Petrochemical Industries
    Nitrogen is used as an inert gas for cleaning and protecting process vessels to ensure safety, for purging and testing pipelines, and for transporting substances under pressure.
  • Paint and Varnish Industry
    In the paint and varnish industry, nitrogen is used to create an inert atmosphere in process volumes to ensure safety, as well as in the packaging of products in an inert atmosphere to prevent the polymerisation of oils.
  • Coal Industry
    In coal mining, nitrogen effectively prevents and suppresses fires, reliably smothering hard-to-reach fire seats in just a few hours of nitrogen unit operation.
  • Iron and Steel Industry
    In the iron and steel industry, nitrogen is mainly used to protect metals during annealing, neutral hardening, carburising and brazing.
  • Electronic Industry
    In the electronic industry, nitrogen is used to prevent oxidation in the manufacture of semiconductors and electrical circuits, quenching of finished products, purging and cleaning.
  • Pharmaceutical Industry
    In the pharmaceutical industry, nitrogen is used in the packaging of medicines and the handling of finely dispersed substances.


Nitrogen generation (with a purity of up to 99.9%) from atmospheric air

Grasys Solutions

  • Production and supply of membrane cartridges
  • Replacement of membranes from other manufacturers
  • Design and manufacture of membrane units
  • Maintenance, repair, upgrading of membrane units
  • Complete turnkey projects (EPC contracts)

Membrane Nitrogen Generation Units and plants

Nitrogen generation units generate nitrogen at flow rates of up to 5,000 m³/h and purity levels from 90 to 99.9%. This is the most technically and economically advantageous solution for nitrogen generation from atmospheric air. These fully automated systems are designed for use indoors or as part of mobile outdoor plants.

Membrane Nitrogen Generation Units and plants

Grasys Manufacturing Facility

Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility
Grasys Manufacturing Facility

The main specialisation of the production complex: the manufacture of high-efficiency hollow-fibre gas separation membrane cartridges.

A unique research and production complex is located in the territory of the Dubna Special Economic Zone of Technical-Innovative Type. One of the most strategically important areas is the production of membrane cartridges for hydrocarbon gas separation, including the helium concentrate separation.

Booklet. Grasys Manufacturing Facility. Download PDF; 1,33 МБ

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 1600 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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