Gas separator MRN series

for air compressorsfor the gas industryautomatic

Product overview
Mairui nitrogen membrane modules use polysulfone hollow fibers to generate nitrogen from compressed air. Oxygen, water vapor and other fast-permeating components preferentially pass through the membrane to the permeate side while nitrogen is concentrated in the non-permeate (retentate) stream.

How it works
Compressed air flows through polysulfone hollow-fiber membranes. Faster-permeating gases (oxygen, water vapor, etc.) permeate to the permeate side; nitrogen is enriched in the retentate (non-permeate) stream.

Models & specifications

• MRN-1512A — L 359 mm | OD 55 mm | ID 50 mm | Feed 3/8" | Retentate 3/8" | Permeate 1/4" | Weight 0.9 kg
• MRN-2022A — L 589 mm | OD 70 mm | ID 60 mm | Feed 3/8" | Retentate 3/8" | Permeate 3/8" | Weight 1.9 kg
• MRN-3032A — L 856 mm | OD 110 mm | ID 85 mm | Feed 1/2" | Retentate 1/2" | Permeate 1/2" | Weight 6.0 kg
• MRN-4160A — L 1564 mm | OD 160 mm | ID 125 mm | Feed 1" | Retentate 1" | Permeate 1" | Weight 19 kg
• MRN-6160A — L 1580 mm | OD 200 mm | ID 157.5 mm | Feed 1.5" | Retentate 1.5" | Permeate 1.5" | Weight 26 kg
• MRN-8140A — L 1080 mm | OD 280 mm | ID 220 mm | Feed 1.5" | Retentate 1.5" | Permeate 2" | Weight 44 kg
• MRN-8160A — L 1580 mm | OD 280 mm | ID 220 mm | Feed 1.5" | Retentate 1.5" | Permeate 2" | Weight 55 kg

Common materials

• Hollow fiber: Polysulfone
• Potting material: Epoxy
• Sealing O-ring: NBR

Engineering notes

• Select modules based on required flow, nitrogen purity, feed pressure, temperature and feed-air quality.
• Complete operating matrices are confirmed via technical documentation or project evaluation; not all conditions are published online.

Technical specifications

• Product family: Nitrogen membrane modules (MNH series)
• Membrane material: Polysulfone hollow fibers
• Connection type: Rc (PT)
• Available models and key dimensions/weights listed above
• Potting material: Epoxy
• Sealing O-ring: NBR
• Intended use: On-site nitrogen generation from compressed air for industrial applications