PSA Oxygen Generation Plant
Overview
The PSA Oxygen Generation Plant is a modular system that produces oxygen from ambient air using pressure swing adsorption technology. It continuously separates oxygen from nitrogen to supply a stable stream of high-purity oxygen for industrial, medical, or process applications.
Working principle
| Step | Process | Description |
|---|---|---|
| 1 | Air Intake & Compression | Ambient air is drawn in and pressurized by a blower or compressor to the required working pressure. |
| 2 | Drying & Filtration | Compressed air passes through a dryer and filter to remove moisture and impurities; dew point adjustable between -20°C and -60°C. |
| 3 | Oxygen Separation | Dried air enters the adsorption tower where nitrogen is selectively adsorbed by molecular sieves, allowing oxygen to pass through. |
| 4 | Tower A Adsorption | Compressed air enters Tower A; nitrogen is adsorbed, and oxygen is collected in the product buffer. |
| 5 | Tower B Switching & Regeneration | After Tower A saturates, the system switches to Tower B for adsorption; Tower A undergoes depressurization to release nitrogen and regenerate the adsorbent. |
| 6 | Continuous Production | Towers A and B operate alternately, enabling uninterrupted oxygen generation. |
Core Features
| Feature | Description |
|---|---|
| Easy Operation | One-button start/stop; unattended operation supported. |
| Energy Efficiency | Optimized design for low electricity consumption and reduced operating cost. |
| Reliable Performance | Stable long-term continuous operation using high-quality components. |
| Low Maintenance | Simplified maintenance procedures; long service intervals. |
| Low Noise | Designed to minimize operational sound levels. |
Comparison of various oxygen production methods
|
Oxygen production method |
Core principles |
Advantages |
Applicable scenarios |
|
cryogenic oxygen generator |
Cryogenic Distillation separation of air |
High purity, large production capacity, and the ability to produce multiple gases |
Large scale industrial oxygen using |
|
Vacuum pressure swing adsorption oxygen generator(VPSA) |
Molecular sieve adsorption selective separation, micro positive pressure adsorption, negative pressure desorption |
Fast startup and lowest energy consumption |
Small and medium-sized oxygen use (medical, small-scale industrial) |
|
Pressure Swing Adsorption Oxygen Generator (PSA) |
Molecular sieve adsorption selective separation, high-pressure adsorption, micro positive pressure desorption adsorption |
Fast start-up, low energy consumption, compact equipment |
Small scale use of oxygen (medical, etc.) |
|
Membrane separation oxygen generator |
Selective permeation of oxygen by polymer membranes |
Simple structure and easy maintenance |
Low purity, low flow rate (fish pond oxygenation) |
Project Execution
- 50–200 Nm³/h Systems: 6–8 weeks (Standardized skid configurations)
- 300–1000 Nm³/h Systems: 8–12 weeks (Custom-engineered solutions)
- Large-Scale / Custom EPC Projects: Integrated directly with the Owner's/EPC's Master Progress Schedule (Level 3/4 WBS).
- Shop Testing (FAT): 100% factory-tested prior to dispatch. Verification includes oxygen purity logging, pressure holding/stability tests, and automated valve switching simulation.
Safety control
- Dual-channel online oxygen analyzers with automatic low-purity alarm and automated off-spec gas venting/interlocking.
- SS304/SS316L piping for oxygen service, subjected to strict degreasing and cleaning procedures compliant with ASTM G93 standards to eliminate fire risks.
- Remote diagnostics via PLC. Seamless integration available via Modbus, Profibus, or Ethernet to central SCADA/DCS networks, including mobile fault alerts.
after-sales support
- Molecular sieve design life of 5–7 years, contingent on feed air quality meeting ISO 8573-1:2010 [1:4:1] standards.
- Main filtration elements are rated for 6 to 12 months replacement intervals, managed via differential pressure monitoring.
- Structuring of Commissioning Spares and 2-Year Operational Spares packages during the detailed engineering phase. Critical consumables dispatched within 48 hours.
- On-site classroom and hands-on technical training for plant operators and facility maintenance teams is completed before final handover.
- Commercial Warranty: 18 months from shipment date or 12 months post-commissioning.
Compliance
- Quality Management: Entire design, procurement, and assembly workflow executed under ISO 9001 and ISO 13485 (Medical Devices) quality management systems.
- Code Compliance: Pressure vessels designed, fabricated, and stamped in strict accordance with ASME Section VIII Div. 1, PED 2014/68/EU, or local codes based on project destination.
- Electrical Safety: Control panels and electrical assemblies CE-marked and compliant with relevant low-voltage and EMC directives.
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