250Nm³/h 99% High Purity PSA Oxygen Generator for Underground Mine Oxygen Supply
PSA Oxygen Generator Overview
A PSA oxygen generator is an industrial gas separation device that extracts high-purity oxygen from ambient air using Pressure Swing Adsorption technology. It utilizes molecular sieves that selectively adsorb nitrogen under high pressure while allowing oxygen to pass through, achieving efficient oxygen-nitrogen separation at room temperature. Compared with traditional oxygen supply methods such as liquid oxygen transportation and cylinder oxygen, pressure swing adsorption oxygen plants offer distinct advantages: on-site oxygen production eliminates logistics risks, continuous supply ensures uninterrupted operation, modular design adapts to harsh underground environments, and low energy consumption reduces long-term operating costs. For underground mine scenarios, the PSA oxygen generation plant with 250Nm³/h output and 99% purity provides a reliable solution for process oxygen demand and miner breathing protection, effectively improving production efficiency and safety levels.
Core Technical Parameters
| Capacity |
O₂ Purity |
Load Adjustment |
O₂ Outlet Pressure |
| ≥200Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥300Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥400Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥500Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥600Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥700Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥800Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥1000Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥1200Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
| ≥1500Nm³/h |
≥90% |
50%~100% |
10~40Kpa.G |
Working Principle of PSA Oxygen Plant for Underground Mines
The working of PSA oxygen plant in underground mine applications follows a cyclic adsorption-desorption process. First, ambient air is drawn into the system through an air compressor, then purified by multi-stage filters to remove dust, oil, and moisture (meeting ISO 8573-1 Class 1 standards). The clean compressed air enters adsorption towers filled with molecular sieves, where nitrogen is selectively adsorbed under high pressure, leaving high-purity oxygen to flow into the buffer tank. When the molecular sieve approaches saturation, the system switches to the other tower for adsorption, while the saturated tower depressurizes to atmospheric pressure for nitrogen desorption and regeneration. This alternating cycle (10-60 seconds per cycle) ensures continuous supply of 99% purity oxygen. For large-scale mine projects, VPSA oxygen generator (Vacuum Pressure Swing Adsorption) can be adopted, which uses vacuum desorption to improve energy efficiency by 15-20% compared to traditional PSA systems.
Advantages of PSA Oxygen Systems in Underground Mine Applications
Compared with traditional liquid oxygen supply, Vacuum Pressure Swing Adsorption Oxygen Systems and PSA systems offer unparalleled advantages for underground mines. On-site oxygen production eliminates the safety hazards of liquid oxygen transportation and storage in narrow underground spaces, reducing the risk of explosions or leaks. The modular design allows flexible installation in limited underground areas, and the quick start-up capability (≤15 minutes) ensures emergency oxygen supply during unexpected situations. Energy efficiency is another key highlight: the PSA technology for oxygen generation consumes only 0.35-0.45kWh per cubic meter of oxygen, which is 30-40% lower than deep cryogenic air separation technology. Additionally, the PSA oxygen plant purity can be stably maintained at 99% through intelligent control, meeting both process requirements (such as cyanide leaching and pressure oxidation in gold mines) and miner breathing needs.
Maintenance and Safety Standards for Underground Mine PSA Oxygen Plants
Ensuring the safe operation of PSA gas plant in underground mines requires strict adherence to maintenance and safety protocols. Daily maintenance includes checking the automatic drainer, cleaning the air intake filter weekly, and monitoring operating parameters (pressure, temperature, purity) hourly. Monthly inspections should focus on molecular sieve performance and valve tightness, while oxygen analyzers need quarterly calibration to ensure accurate purity monitoring. Safety measures include reliable grounding (ground resistance ≤4Ω), keeping the equipment 5 meters away from open flames, and using anti-static tools during maintenance. The PSA system for oxygen should be equipped with leakage detection alarms and emergency shutdown devices to respond to abnormal conditions promptly. For long-term operation, it is recommended to cooperate with professional PSA oxygen generator manufacturers to obtain regular technical support and spare parts supply.
The 250Nm³/h 99% high-purity pressure swing adsorption PSA oxygen plants plays an irreplaceable role in underground mine oxygen supply, providing a safe, efficient, and economical oxygen supply solution for mine production. By understanding its working principle, core parameters, and application advantages, mining enterprises can better select and use PSA oxygen generation equipment to improve the safety of underground operations and reduce production costs.
Uw bericht moet tussen de 20-3.000 tekens bevatten!
Dutch
