On-Site Oxygen Generation with Stable Purity, Flow and Pressure
Hongbo PSA Oxygen Generator is a fully automatic oxygen generation system that produces oxygen directly from compressed air using zeolite molecular sieves.
Based on the Pressure Swing Adsorption (PSA) process, the system selectively adsorbs nitrogen from compressed air while allowing oxygen-rich gas to pass through as the product gas.
With oxygen production capacities from 1 to 300 Nm³/h, oxygen purity of 93%±3%, and adjustable oxygen pressure from 0.01 to 0.6 MPa, Hongbo PSA Oxygen Generators provide a practical solution for continuous on-site oxygen supply.
Key Specifications
| Parameter | Specification |
|---|---|
| Oxygen Production | 1–300 Nm³/h |
| Oxygen Purity | 93%±3% |
| Oxygen Pressure | 0.01–0.6 MPa |
| Oxygen Dew Point | -40 to -70°C |
| Operation | Fully automatic |
| Process | Pressure Swing Adsorption (PSA) |
| Adsorbent | Zeolite molecular sieve |
Note: The above core specifications are based primarily on current product data.
What Is a PSA Oxygen Generator?
A PSA Oxygen Generator is an on-site industrial gas generation system that separates oxygen from compressed air through pressure swing adsorption.
Unlike delivered oxygen cylinders or bulk liquid oxygen, a PSA oxygen generator allows users to produce oxygen directly at the point of consumption.
The system uses zeolite molecular sieve as the adsorbent. Under pressurized conditions, the molecular sieve preferentially adsorbs nitrogen from compressed air while oxygen passes through as oxygen-enriched product gas.
When the adsorption bed reaches its working capacity, the pressure is reduced and the adsorbed nitrogen is released. The molecular sieve is then regenerated and prepared for the next adsorption cycle.
By switching between adsorption towers automatically, the system can provide a continuous oxygen supply.
How Does a PSA Oxygen Generator Work?
PSA Oxygen Generation Process
The oxygen generation process can be summarized into the following stages:
1. Compressed Air Treatment
Compressed air first passes through the air purification components to remove contaminants that could affect molecular sieve performance.
Clean and properly treated compressed air is essential for stable adsorption efficiency and long molecular sieve service life.
2. Nitrogen Adsorption
The purified compressed air enters one of the PSA adsorption towers.
The zeolite molecular sieve preferentially adsorbs nitrogen under pressure, while oxygen-rich gas passes through the adsorption bed.
3. Oxygen Collection
The oxygen-rich product gas is collected and delivered to the oxygen buffer tank.
The buffer tank helps stabilize oxygen supply to downstream equipment.
4. Adsorption Tower Switching
When the molecular sieve in the working tower approaches its adsorption capacity, the system automatically switches to another adsorption tower.
This allows oxygen generation to continue without manually replacing or regenerating the adsorbent.
5. Molecular Sieve Regeneration
The pressure in the saturated adsorption tower is reduced.
The adsorbed nitrogen is released from the molecular sieve, allowing the adsorption bed to regenerate and prepare for the next cycle.
6. Continuous Oxygen Production
The adsorption and regeneration cycles are repeated automatically.
This alternating operation enables continuous oxygen production for industrial applications.
PSA Oxygen Generator System Configuration
A complete Hongbo PSA Oxygen Generator system can include:
- Compressed air source
- Air purification system
- PSA adsorption towers
- Zeolite molecular sieve
- Pneumatic valve system
- Oxygen buffer tank
- Oxygen outlet system
- PLC control system
- Oxygen monitoring and alarm system
- Connecting piping and fittings
The exact configuration can be customized according to required oxygen flow, pressure, installation conditions and application requirements.
Technical Specifications
PSA Oxygen Generator Technical Indicators
| Technical Indicator | Specification |
|---|---|
| Oxygen Production | 1–300 Nm³/h |
| Oxygen Purity | 93%±3% |
| Oxygen Pressure | 0.01–0.6 MPa |
| Oxygen Dew Point | -40 to -70°C |
| Process | Pressure Swing Adsorption |
| Adsorbent | Zeolite Molecular Sieve |
| Control | Automatic PLC Control |
The four primary performance indicators above are taken directly from Hongbo's current product data.
PSA Oxygen Generator Models
Hongbo's HBF093 series covers oxygen production capacities from 1 Nm³/h to 300 Nm³/h.
| Model | Oxygen Production (Nm³/h) | Air Consumption (Nm³/min) | Imported Nominal Diameter DN | Air Nominal Diameter DN | Host Dimensions L×W×H (mm) |
|---|---|---|---|---|---|
| HBF093-1 | 1 | 0.2 | DN15 | BL0010 | 800×650×1720 |
| HBF093-2 | 2 | 0.4 | DN15 | BL0010 | 950×950×1500 |
| HBF093-3 | 3 | 0.6 | DN15 | BL0010 | 1050×900×1865 |
| HBF093-5 | 5 | 1 | DN20 | BL0010 | 1450×900×1825 |
| HBF093-10 | 10 | 2 | DN32 | BL0020 | 1450×900×1825 |
| HBF093-15 | 15 | 3 | DN40 | HBHAD-4-0 | 1800×950×1940 |
| HBF093-20 | 20 | 4 | DN40 | HBHAD-6-0 | 1850×1025×2100 |
| HBF093-25 | 25 | 5 | DN50 | HBHAD-6-0 | 2000×1050×2210 |
| HBF093-30 | 30 | 6 | DN50 | HBHAD-8-0 | 2000×1050×2530 |
| HBF093-50 | 50 | 10 | DN65 | HBHAD-13-0 | 2200×1250×2720 |
| HBF093-60 | 60 | 12 | DN65 | HBHAD-15-0 | 2250×1300×2850 |
| HBF093-80 | 80 | 16 | DN80 | HBHAD-20-0 | 2350×1550×3060 |
| HBF093-100 | 100 | 20 | DN100 | HBHAD-25-0 | 2500×1600×3330 |
| HBF093-120 | 120 | 24 | DN100 | HBHAD-30-0 | 2600×1700×3670 |
| HBF093-150 | 150 | 30 | DN150 | HBHAD-40-0 | 4700×1500×2980 |
| HBF093-180 | 180 | 36 | DN200 | HBHAD-40-0 | 4700×1600×3370 |
| HBF093-200 | 200 | 40 | DN200 | HBHAD-60-0 | 5000×1600×3330 |
| HBF093-240 | 240 | 48 | DN200 | HBHAD-60-0 | 5200×1700×3670 |
| HBF093-300 | 300 | 60 | DN250 | HBHAD-80-0 | 5900×1600×4520 |
Key Features of Hongbo PSA Oxygen Generator
1. Efficient Air Purification
The air purification system provides clean raw air for the oxygen generation process.
Proper pretreatment helps maintain adsorption efficiency and contributes to the service life of the molecular sieve.
2. Stable Oxygen Supply
The oxygen buffer tank helps stabilize the gas supply and reduce fluctuations in downstream oxygen demand.
3. High-Quality Pneumatic Valves
Hongbo's brochure specifies the use of internationally recognized valve brands, including:
- Burkert
- Gemu
- SMC
- CKD
The selected components help support reliable automatic switching of the PSA system.
4. Reliable Molecular Sieve Compression Technology
Hongbo uses a specialized pressing technology for the molecular sieve.
The pressing force is controlled to remain stable rather than changing significantly with cylinder stroke, helping maintain the working condition of the molecular sieve bed.
5. Cylinder Position Indication
The cylinders are equipped with indicator rods, allowing the operating stroke of the pneumatic cylinders to be visually monitored.
6. Automatic Alarm and Shutdown
The system includes an alarm and shutdown function to provide protection during abnormal operating conditions.
7. Synchronized Operation
The gas required by the system is taken directly from the adsorption tower and can operate synchronously with the adsorption process.
8. Automatic PLC Control
The complete adsorption and regeneration cycle is controlled automatically, reducing the need for manual intervention.
9. Factory Testing
Hongbo follows standardized testing procedures before equipment leaves the factory to help ensure stable and reliable operation.
10. Continuous Operation
The automatic tower switching process allows the oxygen generator to operate continuously without manual replacement of the molecular sieve.
Oxygen Purity and Capacity
For industrial applications, oxygen purity and oxygen flow should be selected according to the actual process requirements.
Hongbo's standard PSA Oxygen Generator provides:
93%±3% Oxygen Purity
This specification is the core oxygen purity range stated in the Hongbo product documentation.
For applications requiring different oxygen purity levels, the system configuration should be evaluated according to the required flow rate, process conditions and gas quality requirements.
1–300 Nm³/h Oxygen Production
The HBF093 series provides multiple capacity options from small-flow systems to larger industrial oxygen generation systems.
For equipment selection, the required oxygen consumption, peak demand and operating conditions should be considered rather than selecting the generator based only on average consumption.
Industrial Applications
Hongbo PSA Oxygen Generators can provide on-site oxygen for a wide range of industrial processes.
Metal Cutting and Welding
Oxygen can be used as an oxidizing gas in oxy-fuel cutting, welding and related metal processing applications.
Wastewater Treatment
Oxygen can be supplied to biological wastewater treatment processes where oxygen demand is an important part of aerobic treatment.
Glass Manufacturing
Oxygen enrichment can be used to support combustion processes in glass production.
Chemical and Petrochemical Industries
Oxygen can be used in oxidation, combustion enhancement and other industrial chemical processes.
Aquaculture
On-site oxygen generation can provide a continuous oxygen source for aquaculture systems and fish farming.
Pharmaceutical and Chemical Production
Where process requirements permit PSA oxygen purity, oxygen can be supplied directly to industrial production processes.
Electronics and New Energy
On-site oxygen generation can be integrated into industrial processes where oxygen is required as a process gas.
Other Industrial Applications
The PSA oxygen generation system can also be configured for applications in:
- Environmental protection
- Food processing
- Steel production
- Powder metallurgy
- Heat treatment
- Petrochemical production
- New energy
- Industrial manufacturing
PSA Oxygen Generator vs. Delivered Oxygen
For facilities with continuous oxygen demand, on-site PSA generation can provide an alternative to relying entirely on cylinders or bulk oxygen deliveries.
| Factor | PSA Oxygen Generator | Delivered Oxygen |
|---|---|---|
| Oxygen Supply | Generated on site | External supply |
| Gas Production | According to equipment capacity | Dependent on delivery |
| Operation | Automatic | Requires logistics |
| Supply Continuity | Continuous generation | Requires inventory |
| Installation | Initial equipment investment | Storage and delivery infrastructure |
| Application | Continuous industrial demand | Flexible external supply |
| Operating Model | On-site production | Purchased gas |
The most suitable solution depends on oxygen demand, required purity, operating schedule, local gas prices and installation conditions.
Container-Type Tank Filling Oxygen Generator
For applications requiring oxygen filling and storage, Hongbo also provides Container-Type Tank Filling Oxygen Generator systems.
The system integrates oxygen generation equipment into a containerized structure and can incorporate:
- PSA oxygen generation system
- Oxygen storage
- Filling equipment
- Control system
- Piping system
- Supporting equipment
This configuration can be considered for projects requiring a more integrated oxygen generation and filling solution.
Why Choose Hongbo PSA Oxygen Generator?
In-House Engineering and Manufacturing
Hongbo integrates R&D, engineering design and manufacturing for industrial gas equipment.
The company has more than 150 employees, including engineers and after-sales service personnel, providing technical support throughout equipment design, manufacturing and service.
Complete Equipment Manufacturing
Rather than supplying only individual PSA components, Hongbo can provide complete oxygen generation systems configured according to the customer's oxygen demand and site conditions.
Customized Oxygen Generation Solutions
Oxygen production capacity, pressure, equipment configuration, control system and installation arrangement can be evaluated according to the customer's application.
Quality-Controlled Components
Key components such as pneumatic valves and control elements can be selected from established international brands according to project requirements.
Technical Support
Hongbo provides installation and commissioning guidance, technical support and after-sales service for international customers.
How to Select a PSA Oxygen Generator
Before selecting a model, customers should normally provide the following information:
1. Required Oxygen Flow
For example:
20 Nm³/h, 50 Nm³/h, 100 Nm³/h, 200 Nm³/h
2. Required Oxygen Purity
Hongbo's standard PSA Oxygen Generator specification is:
93%±3%
If another purity requirement applies, it should be confirmed during technical evaluation.
3. Required Oxygen Pressure
The standard product range is:
0.01–0.6 MPa
4. Operating Schedule
Please specify whether the oxygen generator will operate:
- Continuously
- Intermittently
- With variable oxygen demand
5. Installation Conditions
Important site information includes:
- Ambient temperature
- Installation altitude
- Available floor space
- Compressed air source
- Electrical supply
- Oxygen consumption pattern
Based on this information, Hongbo can recommend an appropriate PSA oxygen generation configuration.
Installation and Operation Considerations
Because oxygen supports combustion, oxygen generation systems should be installed and operated with appropriate safety controls.
Important considerations include:
- Keep oil and grease away from oxygen-contacting components.
- Provide adequate ventilation around the equipment.
- Maintain clean and dry compressed air.
- Install and operate the system according to applicable local safety requirements.
- Provide appropriate oxygen monitoring where required by the installation environment.
- Follow the equipment operating and maintenance instructions supplied by the manufacturer.
These are general engineering considerations; the final installation requirements should follow the applicable local regulations and project specifications.
Maintenance
Routine maintenance helps maintain stable PSA performance.
Typical maintenance activities include:
Air Filtration
Check air filters and replace filter elements according to operating conditions and manufacturer recommendations.
Valve Inspection
Regularly inspect pneumatic valves and switching components.
Molecular Sieve
Monitor oxygen purity and system performance to identify potential molecular sieve degradation.
Oxygen Monitoring
Check oxygen concentration monitoring equipment and calibrate sensors according to the applicable equipment requirements.
Pneumatic Cylinders
Check cylinder movement and indicator rods to ensure reliable tower switching.
Frequently Asked Questions
What is a PSA Oxygen Generator?
A PSA Oxygen Generator is an on-site oxygen generation system that uses zeolite molecular sieves to separate oxygen from compressed air through pressure swing adsorption.
What oxygen purity can a PSA Oxygen Generator provide?
Hongbo's standard PSA Oxygen Generator provides 93%±3% oxygen purity according to the company's product specifications.
What is the capacity range of Hongbo's PSA Oxygen Generator?
The HBF093 series covers oxygen production from 1 to 300 Nm³/h.
What is the oxygen outlet pressure?
The standard oxygen pressure range is 0.01–0.6 MPa, with the pressure adjustable according to operating requirements.
What is the oxygen dew point?
The specified oxygen dew point range is -40 to -70°C atmospheric dew point.
Can the PSA Oxygen Generator operate continuously?
Yes. The PSA system uses automatic switching between adsorption towers, allowing continuous oxygen generation without manual switching.
Can Hongbo customize the oxygen generator?
Yes. Equipment configuration can be evaluated according to oxygen flow, pressure, purity requirements, installation conditions and application requirements.
What is the difference between PSA and VPSA oxygen generation?
Both technologies use adsorption-based gas separation, but their operating pressure configurations and system structures are different. Hongbo's PSA Oxygen Generator uses compressed air and pressure swing adsorption, while VPSA systems use a different pressure/vacuum operating configuration.
Does Hongbo provide containerized oxygen systems?
Yes. Hongbo's 2026 product brochure includes a Container-Type Tank Filling Oxygen Generator configuration for integrated oxygen generation and filling applications.