High Pressure PSA Oxygen System For Cutting

In metal thermal cutting operations, oxygen purity and pressure stability directly determine cut surface quality, cutting speed, and consumable costs per ton of steel plate. The role of a High pressure PSA oxygen system for cutting is precise: to couple pressure swing adsorption technology with high-pressure boosting, delivering a continuous, dry, high-purity oxygen stream to the cutting torch. It is not an accessory, but the energy core of the cutting process.

Why is high-pressure oxygen necessary for cutting?

Atmospheric-pressure oxygen cannot penetrate thick plates, while low-pressure supply causes slag adherence, flame interruption, and rough cut surfaces. This system separates oxygen to 93%±2% concentration via the PSA unit, then immediately feeds into a high-pressure boosting module, stabilizing the discharge pressure within an adjustable range of 1.5 MPa to 3.0 MPa. This pressure band covers the dynamic oxygen demand curve of most CNC flame-cutting machines.

Principle of Operation

The system employs a dual-adsorption tower alternating process: pre-treated compressed air enters the tower filled with zeolite molecular sieve, where nitrogen is selectively adsorbed, allowing oxygen-enriched gas to exit from the top. Simultaneously, the other tower undergoes depressurization and desorption for regeneration. The two towers are automatically switched by a PLC timing sequence, enabling continuous oxygen production. The boosting stage uses a three-stage water-cooled plunger compressor to raise the low-pressure oxygen to the set value, with a buffer tank to dampen pressure pulsations. The entire process is chemical-free, requiring only electrical power and compressed air.

Core Performance Parameters (Typical Conditions)

The following are reference values under standard inlet air conditions, customizable based on the user's specific air supply:

Technical Specifications (Key Component Selection)

• Adsorption Tower Design Pressure: 1.0 MPa (hydrostatic test at 1.25x)
• Booster Model: Three-stage water-cooled, oil-free lubricated plunger type
• Control System: Siemens S7-1200 PLC with 7-inch touchscreen, supporting remote start/stop and alarm push notifications
• Valve Service Life: Pneumatic shut-off valves, rated for ≥2 million cycles
• Noise Level: ≤82 dB(A) (with acoustic enclosure)
• Outlet Particle Size: ≤0.01μm (with final precision filter)
• Dew Point: ≤-40℃ (atmospheric dew point, preventing pipeline freeze in winter)

Industrial Application 

This system is primarily suited for: metal fabrication workshops, shipbuilding sub-assembly yards, heavy steel pipe cutting lines, high-speed stainless steel sheet cutting stations, and remote field operations requiring mobile oxygen supply. It is particularly advantageous for processing enterprises with medium oxygen consumption, significant intermittent usage fluctuations, and rising logistics costs for cylinder oxygen. The system can support multiple cutting torches simultaneously or operate continuously with a single torch under high load.

Certifications & Compliance

We design and manufacture in full compliance with:

• GB/T 20801-2020 – Pressure Piping Code
• TSG 21-2016 – Safety Regulation for Stationary Pressure Vessels
• ISO 9001 – Strict quality control across all production stages
• CE-compliant electrical components (available for export orders)

Every complete unit is leak-tested at 1.15x design pressure for 24 hours before shipment.

Project Deliverables Include:

Approved design drawings, Factory Acceptance Testing (FAT), on-site installation and commissioning support, operator training, and a full as-built documentation set – including pressure vessel inspection certificates.

Custom-Built Oxygen Systems – Not Off-the-Shelf

We don't sell standard boxes. Every high-pressure PSA oxygen system for cutting is designed around your actual site conditions.

1. Low inlet pressure? We add a feed booster fan.
2. Limited headroom? We use horizontal adsorption towers.
3. Frequent starts and stops? We fit variable frequency drives.
4. Cold northern winters? Heat tracing and insulation are included.
5. Need multiple discharge pressures? We design a dual-line reduction output.

From 15 to 200 Nm³/h, we handle full non-standard designs. Delivery usually runs 45–60 working days, depending on scope.

Service That Starts Before You Switch On

We don't call it after-sales. We call it support-from day one.

• Free site assessment – We check your pressure, torch type, and shift usage, then give you an Oxygen Economic Comparison Report.
• Installation help – Our engineers go on-site to handle piping and electrical hookup.
• Remote access ready – Each PLC has a 4G port, so we can fine-tune settings from anywhere.
• Parts on hand – Sieve, valves, filters-always in stock. Shipped within 3 working days.
• Yearly service plan – Optional. Covers sieve refill and valve calibration annually.

Oxygen cutting is about more than flow-pressure swings cause rework, and off-spec purity drives up gas consumption, often costing more over time than an on-site generation system itself. We don't promise zero failures, but we do commit to fast response, sound engineering, and thorough startup support. Shenger Gas builds PSA oxygen systems specifically for cutting, smelting, and oxygen-enriched combustion-no chasing trends, just solving real production problems. Our engineers have been on shop floors, through pipe racks, and on night calls, so we know what reliable high-pressure oxygen means to the people running the equipment. If you want a steady, cost-effective, low-maintenance supply, send us your operation data and we'll tailor a practical solution around it.

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