Membranes for Nitrogen Generation

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)

Applications

• 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.

Applications

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