Membrane Nitrogen Generators


Technical Specifications


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  • Capacity
    		• :1 NM3/hr to 5000 NM3/hr
  • Purity
    		• :95% to 99.9%
  • Pressure
    		• :6 to 24 Bar
    without Nitrogen Booster Compressor
  • Dew Point
    		• :(-) 70˚C



    Membrane Nitrogen Generation Principle


    The Nitrogen separation Membrane is a cylindrical bundle of hollow fiber fine tubes made from polymer material. Each bundle contains several million fibers. Air enters at one end and flows to the opposite end through the fiber bore. In essence, the membranes act like a filter with no moving parts and continuously generate nitrogen at selected flow rate and purity.

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    Pressurized air is fed through one end of the Membrane. Gas separation takes place through fiber wall. Fast permeating gases such as Oxygen, CO2 and water vapor quickly diffuse through the fiber wall and exit at atmospheric pressure through the vent port on the outer side of the Membrane separator. Nitrogen being a slower gas does not permeate through the fiber wall as quickly under flowing conditions and is collected as the Nitrogen product gas. It flows down the bore of the fiber and exits at 0.3 to 1 Bar lower than the pressure of the inlet compressed air.

    The airflow rate determines how much undiffused oxygen remains with the Nitrogen gas. The Nitrogen product gas is extremely dry, with atmospheric dew points typically below -60°C.


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    MVS Membrane Generators up to 67 Nm3/hr are available in very compact Cabinets such as those shown in the photograph on the side. ZEN Series Nitrogen Generators offer the following standard features:
    • Complete Nitrogen Module and Electricals housed inside a Cabinet
    • Cabinet has three access doors (front and one on each side) for easy maintenance
    • Touch Screen HMI Operator Interface on Panel door
    • Oxygen Analyzer (For measuring Nitrogen Purity)
    • Scalable Design (each Panel designed can house two membranes, so future expansion for a 1-membrane system is possible)
    • Flow Control & Purity Control (Each membrane's flow can be individually controlled thereby giving flexibility of flow and purity)

    ZEN Series Models

    SeriesModelFlow (Nm3/hr)*Flow (LPM)Flow (SCFM)
     

    SERIES-1

         		 ZEN 11A 1.8301.14
     ZEN 11B 7.31224.63
     ZEN 12A 3.6602.28
     ZEN 12B 9.11525.77
     ZEN 12C 14.62439.26
     

    SERIES-2

         		 ZEN 21A 33.656021.3
     ZEN 22A 40.968225.92
     ZEN 22B 67.2112042.6

    • Dimensions:
      • Series 1: 500 mm (w) x 500 mm (d) x 1600 mm (h)
      • Series 2: 1000 mm (w) x 1050 mm (d) x 1650 mm (h)

    • Air Compressor:

      We provide silent oil-free compressors suitably sized to serve the required FAD needs of our ZEN-Series Nitrogen Generators

    • Pressure:

      ZEN-Series Nitrogen Generators are capable of taking compressed air up to 25 Barg pressure and have less than 1-bar drop in delivered Nitrogen

      * Above flow rates are at 8 Barg inlet air pressure and delivered Nitrogen at 95% purity. For correction factors at higher purities, please contact our sales personnel.


    MVS Membrane Nitrogen Generator Advantages


    Long Life


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    MVS sources it's Membranes from MEDAL (USA) and these have been proven a very long life in the field without much maintenance. It has been observed that Membranes life is around 10 years without significant decline in performance.


    Low Maintenance (no moving parts)


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    Unlike other Nitrogen generation technologies, Membrane Nitrogen plants in themselves have no moving parts and require minimal maintenance. The feed air cleaning system is the most critical part of the Membrane Nitrogen generator. The membranes require very clean air in order to operate at full efficiency and also to prevent performance deterioration over time. Hence, the filters need to be checked, cleaned, replaced as per MVS recommended maintenance schedule.


    Enquiry

    Interested? Send us your gas requirement on our enquiry page.


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