Gas separator MRN series

for the gas industryfor air compressorshigh-intensity

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