MBVD™ PSA Oxygen Generators Engineering-Driven Onsite Medical Oxygen Generation System
Introduction
MBVD™ PSA Oxygen Generators, designed by Zenox Gas Systems and manufactured, assembled, and commissioned by Oxair India, are advanced Pressure Swing Adsorption (PSA) systems engineered for reliable production of medical-grade oxygen in hospitals and healthcare facilities. The system emphasizes stable purity, energy efficiency, low maintenance, and verifiable real-world performance.
Key Engineering Features
- Stable oxygen purity under variable load and continuous operation
- Optimized adsorption cycles for reduced specific power consumption
- Minimal compressed air and oxygen vent losses
- Robust skid-mounted design with PLC-based automation
- Protection against unauthorized tampering in control circuitry
Typical Technical Specifications
| Parameter | Specification | Notes |
| Oxygen Purity | 93% ± 3% | Medical Grade |
| Oxygen Flow Rate | 5 – 500 Nm³/hr (modular) | Higher capacities on request |
| Oxygen Discharge Pressure | 4 – 6 bar(g) | Higher pressure available |
| Feed Air Pressure | 7 – 10 bar(g) | Standard |
| Specific Power Consumption | 0.65 – 0.85 kWh/Nm³ | Site condition dependent |
| Dew Point | ≤ -40°C to -60°C | Atmospheric |
| Operating Ambient Temp. | 5°C to 45°C | Indian climate design |
| Automation | PLC + HMI | Siemens / Equivalent |
| Power Supply | 415V ± 10%, 50Hz, 3 Phase | – |
Process & Instrumentation Diagram (P&ID) Description
The MBVD™ PSA system operates on the classic two-bed Pressure Swing Adsorption principle with the following key process stages:
- Air Compression & Pre-Treatment: Atmospheric air is compressed, cooled, and passed through pre-filters, oil remover, and dryer to deliver clean, dry compressed air.
- Adsorption Phase: Dry compressed air enters one PSA tower where Nitrogen, CO₂, and other impurities are adsorbed by molecular sieves (Zeolite), producing oxygen-rich product gas.
- Pressure Equalization: Before switching towers, pressure equalization occurs to recover energy and improve efficiency.
- Desorption / Regeneration: The second tower is depressurized and purged with a small quantity of product oxygen to regenerate the molecular sieve.
- Product Oxygen Storage & Delivery: Pure oxygen is buffered in a storage vessel and delivered at constant pressure through final filters and a precision pressure regulator.
- Automatic Cycling: PLC-controlled valves ensure continuous, automatic operation with minimal operator intervention.
Key Safety & Control Features:
- Purity monitoring with automatic vent on off-spec product
- High/Low pressure alarms and shutdowns
- Emergency stop and manual override
- Tamper-evident wiring and controller protection
Major Components & Preferred Brands
| Component | Description / Specification | Preferred Brand / Make |
| Air Compressor | Screw type, oil-injected / oil-free | Atlas Copco / Ingersoll Rand / Kaeser |
| Air Receiver | ASME / IS certified | Standard / Local approved |
| Pre-Filtration System | Coalescing + Particulate + Oil Removal Filters | Donaldson / Atlas Copco |
| Air Dryer | Heatless / Heated / Refrigerated | Atlas Copco / Ingersoll Rand |
| PSA Towers | ASME / PED certified, filled with high-grade Zeolite | Oxair / Zenox designed |
| Molecular Sieves | 13X / Li-LSX grade | UOP / Arkema / BASF |
| Control Valves | Pneumatic / Electric, high-cycle life | Burkert / ASCO / Rotex |
| Oxygen Analyzer | Paramagnetic / Zirconia type | Teledyne / Servomex / Oxair |
| PLC & HMI | With SCADA compatibility | Siemens / Allen Bradley |
| Oxygen Buffer Tank | SS / Carbon Steel, ASME coded | Standard |
| Final Filters & Regulator | 0.01-micron bacterial filter | Donaldson / Parker |
| Skid Structure | Powder-coated MS / SS | Oxair India |
Certifications & Compliance
- ISO 13485:2016 – Medical Devices Quality Management System
- ISO 9001:2015 – Quality Management System
- European Pharmacopoeia / Indian Pharmacopoeia compliant oxygen purity
- ISO 10083 – Oxygen concentrators for medical use
- CE Marking (where applicable)
- PED 2014/68/EU – Pressure Equipment Directive (for vessels)
- Electrical Safety – IEC / IS standards
- GMP compliant documentation support
All critical components are sourced from reputed international manufacturers to ensure long-term reliability and regulatory compliance.
Performance Validation
Real operating data from installations including Sainatha Hospital will be published shortly, covering long-term purity trends, energy consumption, and system availability.
Conclusion
MBVD™ PSA Oxygen Generators deliver reliable, measurable, and cost-effective medical oxygen through disciplined engineering and transparent performance. Hospitals can depend on MBVD™ for uninterrupted oxygen supply — when it matters most.
