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Oxygen Generator
Our PSA oxygen generator can separate oxygen from compressed air utilizing zeolite molecular sieve (ZMS) under pressurization. For PSA oxygen generator, the compressed air is first purified to remove the moisture, oil and dust. Then the purified air will pass through adsorption tower filled with ZMS. As nitrogen has a higher diffusion rate in ZMS pores, the sieve will adsorb the nitrogen and moisture over oxygen, allowing the oxygen to pass as product gas at pressure. After de-pressurizing, the sieve releases adsorbed gases into the atmosphere, and the process can then be repeated.
Two adsorption tower will be installed in parallel in PSA oxygen generator, one tower begins the adsorption phase while other tower regenerates by de-pressurizing. The PLC controller manages process valves with built-in logic for an automatic stop/start for continuous oxygen production. The whole system is composed of purification system for compressed air, air condenser, adsorption tower and oxygen buffer tank. PSA oxygen generation technology is widely used in industrial and medical applications for its efficiency, cost-effectiveness and low maintenance requirements.
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- PSA Oxygen Generator
- Oxygen capacity: 5-200Nm³/h
- Oxygen purity: 90%-94%
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- VPSA Oxygen Generator
- Oxygen capacity: 50Nm³/h-5000Nm³/h
- Oxygen purity: 50%-94%
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- Modular Oxygen Generator
- Oxygen capacity: 1-30Nm³/h
- Oxygen purity: 93%+/-2%
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- The compressed air will be purified first through the purification system, as clean and dry air can help prolong the service life of the molecular sieves
- Pneumatic valves support quick opening and closing without leakage, which makes this PSA oxygen generator satisfy the frequent usage of pressure swing adsorption (PSA) technology with long service life and high reliability
- Adopt the usage of latest molecular sieve, and complete process design for integrated and efficient production
- Adopt continuous systematic improvement and always equipped with latest production technology to save energy and lower the production cost
- Adopt compact design to reduce the space used for installation
- Use PLC control to ensure stable performance and automatic operation with low annual operation error rate
- Online monitoring of nitrogen purity, pressure, and flow.
- Human-machine interface (HMI) control system.
- Audible and visual alarms for off-spec nitrogen; automatic shutdown on prolonged alarm.
- Automatic reminder for vulnerable parts replacement.
- Automatic molecular sieve compaction.
- Pneumatic valve switching automatically controlled by programmable logic controller (PLC).
- Automatic drainage for refrigerated dryer and filters.
Molecular sieve compaction screen plate-
Compaction device after molecular sieve filling
HMI (Human-machine interface) touch screen control
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Controller online monitoring of purity, pressure, and other data
Audible & visual alarm light (automatic alarm when purity/pressure falls below set value or a fault occurs)
- Automatic vent of off-spec nitrogen.
- Reserved RS485 communication port (Modbus or Profibus communication protocol) or Industrial Ethernet communication port.
- Industrial PC, printer, and intelligent IoT (Internet of Things) system.
The nitrogen generation system primarily consists of a compressed air purification unit, compressed air buffer unit, oxygen-nitrogen separation unit, nitrogen buffer unit, control unit, and nitrogen storage unit.
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An oxygen generator is an on-site piece of equipment that allows facilities to produce their own oxygen gas rather than purchase it from a third-party vendor. It eliminates the logistical and financial challenges associated with liquid gas deliveries or bottled gas storage.
Oxygen generators rely on Pressure Swing Adsorption (PSA) technology. It involves forcing a stream of compressed air through a vessel filled with Zeolite Molecular Sieve (ZMS). The ZMS porous structure adsorbs the smaller nitrogen molecules under high pressure, while the larger oxygen molecules pass through to be collected as high-purity product gas. Once saturated with nitrogen, the vessel depressurizes to release the adsorbed nitrogen gas back into the atmosphere, allowing the molecular sieve to regenerate for the next cycle.
Industrial and medical-grade oxygen is required across a vast range of industrial sectors and professional processes. Some of the most common applications include:
- Medical facilities and healthcare services
- Aquaculture and fish farming (water oxygenation)
- Wastewater and sewage treatment processes
- Ozone production systems
- Glass manufacturing and artistic glass blowing
- Gold leaching and metallurgical mining industries
- Welding, cutting, and laser processing operations