Skid-Mounted PSA Oxygen Generator

In industrial gas supply, liquid oxygen tanks and cylinder deliveries often come with high logistics costs, price volatility, and the risk of supply interruption. More and more plants are turning to the skid-mounted PSA oxygen generator as an alternative-using only ambient air as feedstock, it produces 90%-95% oxygen directly on site with low energy consumption through pressure swing adsorption, ready for immediate use.

How It Works: A Straightforward Physical Separation Process

The core of the system is a dual-tower alternating adsorption setup. Compressed air, after oil and water removal, enters the adsorption towers filled with zeolite molecular sieves. Nitrogen is preferentially adsorbed by the sieves, while oxygen passes through smoothly into a buffer tank. When one tower reaches adsorption saturation, the system automatically switches to the other tower for production, while the saturated tower rapidly depressurizes and desorbs using a small portion of product gas, releasing nitrogen. The entire process runs at ambient temperature-no phase change, no additives, and the only byproduct is atmospheric-pressure nitrogen-enriched gas.

Key Performance Indicators (Based on a Typical Industrial Model)

It should be noted that the temperature range is not a requirement for the equipment itself, but rather the condition that the inlet air cooling and drying system must maintain. When the inlet air temperature exceeds 45°C, the dynamic adsorption capacity of the molecular sieve drops noticeably, affecting oxygen production efficiency.

Technical Specifications & Design Features (30 Nm³/h Reference Configuration)

The complete skid-mounted PSA oxygen generator is shipped with piping welding, valve testing, and control system integration already completed. On-site work is limited to connecting power, feedstock air supply, and the oxygen outlet pipeline. All valves are pneumatically actuated shut-off valves with a response time of under one second. The molecular sieve packing density has been optimized through simulation, with a pressure drop below 0.05 MPa-this avoids gas channeling and reduces the load on the air compressor.

Industrial Applications: Four Most Practical Scenarios

• Oxygen-Enriched Combustion (Glass / Ceramic / Cement Kilns)

Blending oxygen to 23%–25% raises flame temperature and cuts fuel consumption by 8%–12%. Reduced nitrogen means lower flue gas volume and less load on the induced draft fan.

• Metal Processing & Cutting

Replaces liquid oxygen for flame cutting and plate preheating. No minimum delivery fees, no waiting for tanker trucks - oxygen is available even during night shifts.

• Ozone Generator Integration

For industrial wastewater treatment and flue gas denitrification, using oxygen as feed gas is 2–3 times more efficient than air. The generator can be placed directly next to the ozone room with piping under 15 meters.

• Non-Ferrous Smelting (Copper / Lead / Zinc)

Oxygen stability at 93% ± 1% for bottom-blown or side-blown enrichment processes. Eliminates pressure fluctuations from liquid oxygen vaporization - more stable furnace conditions.

Project Delivery & Engineering Services

• Scope of supply: Air compressor and downstream treatment system (optional), buffer tank, electrical control cabinet, molecular sieve filling certificate, operation and maintenance manual.

• On-site installation: Guidance on piping connections after skid positioning and initial control parameter setup.

• Commissioning & acceptance: Based on continuous 8-hour operation with purity, flow, and energy consumption meeting contract specifications.

• Certifications: Can support whole-unit CE certification (for EU export), pressure vessel inspection certificate (on request), and ISO 9001:2015 manufacturing system documentation.

• Warranty & response: 3-year warranty for molecular sieve (no powdering or failure under normal use), 1-year warranty for valves and control system. For domestic projects, remote diagnosis provided within 4 hours of service request; on-site service arranged within 48 hours if needed.

In industrial oxygen generation, equipment repeatability matters more than lab data. Every skid-mounted PSA oxygen generator from Shenger Gas undergoes ≥4 hours of continuous testing under standard conditions (20°C, 0.7 MPa, 65% humidity) before delivery, with flow and purity deviations ≤ ±1.5% of contract values. We don't chase extreme numbers-only stable operation across seasons and humidity levels. Molecular sieve batch traceability, pneumatic valve response consistency, and foolproof control programming are all built into Shenger Gas manufacturing standards.

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