PSA (Pressure Swing Adsorption) generates high-purity nitrogen or oxygen directly from compressed air using adsorbent material — Carbon Molecular Sieve (CMS) for nitrogen and Zeolite Molecular Sieve (ZMS) for oxygen. Twin-tower PSA cycles alternately adsorb and regenerate, producing continuous gas flow without interruption.
PSA plants eliminate the cost, logistics and safety hazards of nitrogen/oxygen cylinders or liquid nitrogen dewars. Payback is typically 12–24 months. We supply packaged PSA skids with air pre-treatment (filter, dryer, activated carbon), CMS/ZMS adsorber vessels, product buffer tank, oxygen analyser, flow meter and all controls. Remote monitoring available.
CMS-220 or CMS-240 adsorbent. Purity 95–99.999% N₂ selectable. Twin-tower 6-step PSA cycle. Inlet compressed air 7–10 bar required.
5–5000 Nm³/hZMS-5A or 13X zeolite adsorbent. 90–95% O₂ purity. Medical or industrial grade. DGCA/MoH certified units for hospitals available.
5–1000 Nm³/hCoalescing filter (1µm + 0.01µm) + activated carbon filter + refrigerated or desiccant dryer (−40°C). Mandatory upstream of any PSA plant.
All PSA systemsReceiver/buffer tank at 5–7 bar dampens pressure fluctuations. Provides surge capacity during peak demand. SS or MS construction.
All PSA systemsOnline paramagnetic O₂ analyser (for N₂ plants — measures O₂ impurity) or ZrO₂ sensor. Auto vent on off-spec gas. 4-20mA output.
All PSA systemsCMS-220 (5–7 year life), CMS-240 (10+ year life). Zeolite ZMS-5A for oxygen. Original or OEM-compatible grades. Media replacement service.
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