Custom Industrial Oxygen Generation System
Custom-Built PSA Oxygen Generator
The PSA oxygen generation system uses clean compressed air as the feed gas and high-quality zeolite molecular sieve as the adsorbent. Under controlled pressure conditions, oxygen is separated from air through pressure swing adsorption technology. Purified and dried compressed air undergoes pressurized adsorption and depressurized desorption inside the adsorption towers. Due to aerodynamic characteristics, nitrogen diffuses through the micropores of the zeolite molecular sieve at a faster rate than oxygen. Nitrogen is preferentially adsorbed, while oxygen is enriched in the gas phase to form product oxygen. During depressurization to atmospheric pressure, the adsorbed nitrogen and impurities are released to regenerate the adsorbent. Two adsorption towers operate alternately. One tower produces oxygen, while the other performs desorption and regeneration. Pneumatic valves are switched by a PLC controller, enabling continuous production of high-purity oxygen.
- Oxygen capacity: 1-200Nm³/h (standard conditions)
- Oxygen purity: 93%±2% (per Chinese National Standard)
- Outlet pressure: 0.1-0.55MPa (gauge, stable and adjustable)
- Oxygen dew point: ≤-40°C (at atmospheric pressure)
- Feed Air Pretreatment
Compressed air passes through a refrigerated dryer and multi-stage filters to remove moisture, oil mist, and impurities. This ensures the inlet air is clean, dry, and oil-free, protecting the molecular sieve from contamination. - Adsorption Separation
The pretreated air enters the adsorption towers filled with zeolite molecular sieve (ZMS). Under regulated pressure, the ZMS preferentially adsorbs nitrogen, carbon dioxide, and other trace impurities, while oxygen passes through the adsorbent bed as the product gas. - Regeneration Cycle
Two adsorption towers work in alternating cycles. While one tower is in the adsorption phase to produce oxygen, the other undergoes depressurization to desorb impurities and achieve regeneration. PLC-controlled valves manage the seamless switching between towers to ensure a continuous and stable oxygen flow. - Post-Treatment and Storage
Produced oxygen passes through fine filtration and sterilization. Oxygen boosters or oxygen storage tanks can be configured according to application requirements to ensure stable supply.
- Ambient temperature and low-pressure operation
No cryogenic liquefaction is required. The system utilizes physical adsorption for separation, ensuring low energy consumption and high operational safety. - Adjustable oxygen purity
Standard oxygen purity reaches 93%±2%. Secondary PSA purification enables oxygen purity above 99.5% for industrial or medical applications. - Automated control
Featuring "one-button start" and fully automated operation. Key parameters such as flow rate, pressure, and purity are monitored in real-time, supporting unmanned operation.
| Model | Purity | Flow rate (Nm³/h) | Inlet nominal diameter | Outlet nominal diameter | Outlet pressure (MPa) |
| 93%±2% | 3 | DN15 | DN15 | 0.1-0.55 | |
| 93%±2% | 5 | DN15 | DN15 | 0.1-0.55 | |
| 93%±2% | 10 | DN25 | DN25 | 0.1-0.55 | |
| 93%±2% | 15 | DN40 | DN25 | 0.1-0.55 | |
| 93%±2% | 20 | DN40 | DN25 | 0.1-0.55 | |
| 93%±2% | 25 | DN40 | DN25 | 0.1-0.55 | |
| 93%±2% | 30 | DN40 | DN25 | 0.1-0.55 | |
| 93%±2% | 40 | DN50 | DN40 | 0.1-0.55 | |
| 93%±2% | 50 | DN50 | DN40 | 0.1-0.55 | |
| 93%±2% | 60 | DN50 | DN40 | 0.1-0.55 | |
| 93%±2% | 70 | DN65 | DN40 | 0.1-0.55 | |
| 93%±2% | 80 | DN65 | DN40 | 0.1-0.55 | |
| 93%±2% | 90 | DN65 | DN40 | 0.1-0.55 | |
| 93%±2% | 100 | DN65 | DN50 | 0.1-0.55 | |
| 93%±2% | 110 | DN65 | DN50 | 0.1-0.55 | |
| 93%±2% | 120 | DN80 | DN50 | 0.1-0.55 | |
| 93%±2% | 130 | DN80 | DN50 | 0.1-0.55 | |
| 93%±2% | 140 | DN80 | DN50 | 0.1-0.55 | |
| 93%±2% | 150 | DN100 | DN50 | 0.1-0.55 | |
| 93%±2% | 160 | DN100 | DN50 | 0.1-0.55 | |
| 93%±2% | 170 | DN100 | DN50 | 0.1-0.55 | |
| 93%±2% | 180 | DN100 | DN65 | 0.1-0.55 | |
| 93%±2% | 190 | DN100 | DN65 | 0.1-0.55 | |
| 93%±2% | 200 | DN100 | DN65 | 0.1-0.55 |














