PSA Oxygen Generator for Industrial Oxygen Production

The Chemistry of Making Oxygen From Thin Air

Nitrogen generator sieves grab oxygen. Lithium-based oxygen sieves do the opposite - they preferentially adsorb nitrogen, letting oxygen run ahead of them and out of the tower in an enriched stream. Same pressure-swing choreography, opposite target molecule. Compressed air in at roughly 0.5 MPa, 93±3% oxygen out the top, continuously, while the second tower depressurizes and vents the nitrogen it was holding.

That purity band - 93%, plus or minus three - is the PSA sweet spot. It's more oxygen than air ever gave you (21%) and it's cheap to hold there. When a process genuinely needs 99.5% or higher, that's a different machine's job; we build those too, and we'll tell you which one fits.

What Sits on the Skid

• Air compressor and intake filtration, sized for product flow plus purge losses.
• Air treatment - filter train plus refrigerated dryer. Lithium sieves hate oil mist and liquid water more than carbon ones do.
• Buffer tank to flatten compressor pulsation.
• Adsorption host - twin towers, lithium molecular sieve, pneumatic valves, silencers.
• PLC control panel with online oxygen analyzer input, alarms and historical recording. Flowmeter and booster connections available on request.

KYPO Technical Parameters

Who Buys These Machines

Oxygen-enriched combustion. Blast furnaces and electric arcs, glass furnace oxy-fuel firing, copper and lead flash smelting - oxygen lances eat less fuel and cut NOx when the oxidizer is 93% oxygen instead of air.

Sewage treatment. Fine-bubble diffusers running oxygen rather than air roughly triple the mass transfer driving force. Retrofits usually find the blower was the bottleneck, and a small KYPO skid sits right next to the aeration tank.

Pulp bleaching, aquaculture, medical supply. Pulp mills inject oxygen in the bleaching stage. Shrimp ponds and fish farms pipe it to paddle-wheel diffusers during peak load. Hospitals and oxygen stations feed manifolds and cylinders from KYPO plants feeding storage systems.

Trucks, Cylinders, or a Machine of Your Own

Run the arithmetic we run for every buyer. A liquid or cylinder supply price divided against on-site generation cost at your actual duty gives the payback. Most continuous operations land inside the first year of machine cost. Beyond the money there's a safety ledger: no vaporizer icing, no cryogenic tanker maneuvering your yard, no cylinder-change accidents, no running dry at 2 a.m. during a festival weekend when nobody delivers.

Built Under Pressure-Vessel Discipline

Our factory holds A1 and A2 pressure vessel licenses and ISO9001 with UL on the electrical side. The towers on your skid are code vessels, X-ray reviewed welds and pressure-tested before dispatch - not rolled sheet steel with a paint job. It's an unglamorous place to spend money, and exactly the place a serious manufacturer shouldn't cut.

Getting a Quote

Send us flow, purity, pressure, altitude and application. The factory engineer comes back within 24 hours with a sized model, compressor pairing, energy estimate and layout drawing. MOQ one unit - small plants are how most PSA buyers start.

FAQ

The Duty Cycle Each Application Demands

Nine out of ten KYPO orders fall into one of six application families, and the purity you specify has less to do with the machine than with the process downstream:

• Oxy-fuel combustion boost. Glass furnaces, kilns and boilers run richer and cleaner on 28-35% oxygen-enriched air. You do not need 93% oxygen piped to every burner - you need stable 93% gas blended into combustion air at a controlled ratio.
• Wastewater treatment. Diffused aeration with oxygen instead of air roughly doubles oxygen transfer efficiency. Turndown matters here: our PLC follows dissolved-oxygen signals from your plant control system.
• Aquaculture. Pond and raceway aeration in high-density fish and shrimp farms. Oxygen is a harvest-risk product, so we size the unit with headroom and offer a backup cylinder manifold as an interlocked second source.
• Pulp and paper bleaching. Purity spec is comfortable; uptime is the fight. Units run in parallel with storage so a service event never stops the line.
• Metallurgical and foundry practice. Cupola and electric-arc enhancement, where dust and heat are the enemies and our intake-air siting guidance saves more money than any spec sheet.
• Medical oxygen supply (industrial-grade caution). Many buyers ask for hospital hookups; we are direct about it - KYPO delivers 93±3% industrial-grade gas. Where pharmacopeial oxygen is required, a cryogenic ASU or liquid supply with vaporizer is the correct answer and we will size that instead.

What Separates Our Build From A Catalog Box

There are a thousand sellers of PSA oxygen boxes on the internet. What you are actually buying is sieve loading discipline, valve quality and after-sales math:

• Sieve handling. Zeolite is hygroscopic from the moment the drum opens. We load, compact and seal towers in-house the same day, with nitrogen purge on the dead volume - which is why first-pass purity on your site comes up in hours instead of days.
• Valve stack. The pneumatic angle-seat valves switch every single minute of every day. We use field-proven industrial brands and ship spare kits because the correct engineering answer is "when", not "if".
• Analyzer honesty. Every unit leaves with a calibrated oxygen analyzer feeding the PLC. Low purity routes the gas to vent, not to your process. Buyers who disable that interlock always call us later.
• Heat management. Zeolite hates oil and hates condensate. The air treatment train (filter, refrigerated dryer, carbon bed) is included and sized warm, not sized pretty.

Sizing Conversation We Will Want To Have

To quote accurately we need six numbers, and you probably have five of them on hand: consumption in Nm³/h at peak and at average; required oxygen concentration at the point of use; line pressure; altitude above sea level; ambient temperature extremes; and hours per year. If you already burn liquid oxygen, send twelve months of delivery invoices - the average and peak flow fall out of that document cleanly.

The running cost of a PSA oxygen plant is electricity, nothing else that matters. Send your flow and your tariff and we will run the actual arithmetic; in oxy-fuel and aquaculture duty the comparison against delivered liquid oxygen usually favors the plant inside the first production year. No obligation and no form-fill theatre.

One last commitment that costs nothing: if a PSA machine is the wrong technology for your duty - too much flow, purity spec too high, ambient too hostile - we will tell you so and quote a VPSA or a small cryogenic unit instead. We sell plants; the letter on the skid is the least important part of the sale.