1. Introduction

PSA Oxygen Generation System is one of the most efficient and cost-effective ways to produce oxygen on-site in a continuous mode. With an increasing trend of switching to on-site systems from cylinder supply, PSA oxygen generators have become the need of hospitals, mining, aquaculture, ozone generators, metal processing, and other industrial uses.

Nanjing Bangwin Gas is the supplier of high-quality PSA oxygen generators equipped with long-life components, stable performance, and optimized gas purity control.

2. W hat Is a PSA Oxygen Generation System?

A PSA Oxygen Generation System is the equipment that uses Pressure Swing Adsorption (PSA) technology to produce high-purity oxygen from ambient air. The oxygen is separated from nitrogen by the adsorbent zeolite molecular sieve.

This technique allows to generate oxygen continuously without using high-pressure cylinders or deliveries of liquid oxygen.

Pressure Swing Adsorption Explanation – ScienceDirect
https://www.sciencedirect.com/topics/engineering/pressure-swing-adsorption

3. PSA Technology Principle

The process works in a continuous cyclic pressure swing system, as follows:

l Adsorption Cycle 

l Air Compression: Atmospheric air is filtered, compressed and delivered to the adsorber.

l Adsorption: Molecular sieve (Zeolite) adsorbs nitrogen molecules from air and oxygen passes through.

l Desorption (Regeneration) cycle: The adsorber tower depressurizes and nitrogen is pushed out.

l Two towers work alternately in adsorption and regeneration, so a continuous oxygen production can be achieved.

The typical purity is 93%±3 which is acceptable to most industrial and medical users.

For customers who also handle nitrogen, see our PSA Nitrogen Generator Systems.

4. PSA Oxygen Generator Components

Typically, a PSA oxygen system comprises the following components:

l Air compressor

l Refrigerated / adsorption air dryer

l Precision air filters

l Air buffer tank

l Pair of adsorption towers

l Oxygen buffer tank

l Flow/pressure/purity control system

l PLC smart control panel

Nanjing Bangwin Gas provides modular PSA systems for easy operation and low maintenance.

You can review detailed accessories at:Gas Equipment Components

5. Main Specifications

l Continuous, onsite oxygen production

l Oxygen purity up to 90–95%

l Fully automatic operation

l Low energy consumption

l Fast start-up time

l Durable molecular sieve with a long service life

l Optional oxygen cylinder-filling device

l Stable output pressure and flow rate

6. Specifications & Technical Parameters

Purity of Oxygen

90%–95% (depending on model)

Capacity

1–500 Nm³/h of oxygen Customization of large-capacity device is available upon request

Pressure

0.4–0.6 MPa (nominal)

Power

Approximately 0.9–1.2 kW/Nm³ of oxygen produced

Appearance

All-in-one, skid-mounted structure

Industrial stainless steel piping

Touch screen PLC monitoring system

Self-protection alarm system

Optional

l Oxygen booster and cylinder filling device

l Cloud monitoring

l Medical oxygen purification system

Soundproofing package

7. Benefits of PSA Oxygen Generation System 

1. Cost saving

Say goodbye to deliveries of high-pressure oxygen cylinders, no need for storage of liquid oxygen (LOX)

2. Continuous oxygen supply 24/7

Dual tower configuration means zero oxygen interruption

3. Safe

Prevents storage issues associated with bulk liquid oxygen, or banks of high pressure cylinders

4. Quick Installation

Skid-mounted unit, minimal civil work involved for fast and easy installation

5. Long service life & Low maintenance

Zeolite molecular sieves life cycle of 8–10 years

6. Flexible & Customization

Nanjing Bangwin Gas can supply customized oxygen generation solution for special industrial oxygen applications

8. Diverse Industrial Applications

PSA oxygen generators find application in:

l Medical & Hospital Oxygen Systems

l Aquaculture / Fish Farming Oxygen Supply Systems

l Metal Cutting, Welding & Brazing

l Ozone Generation Systems

l Mining Oxygen Support Systems

l Glass & Ceramic Combustion Enhancement

l Wastewater Aeration Systems

l Chemical Processing / Oxidation Reactions

9. Why Select Nanjing Bangwin Gas

As professional industrial gas equipment manufacturer, Nanjing Bangwin Gas has the following competitive advantages:

l PSA oxygen generation system with stable performance

l Molecular sieve and other components of high quality

l CE/ISO-certified engineering & production

l Fast delivery and after-sales service worldwide

l Experienced technical team for installation & after-sales

l Cost-effective to be designed for long-term industrial operation

Nanjing Bangwin Gas’ PSA oxygen generation system is known for its durability, easy operation and very good energy efficiency.

10. FAQ

Q1: How high can PSA oxygen purity be?

Normally 90–95% can be achieved, depending on the system.

Q2: Can the oxygen produced be used as medical oxygen?

The system can be upgraded with further purification modules to the required medical standard.

Q3: Can the produced oxygen be bottled into cylinders?

Yes, by connecting a booster compressor and a filling manifold.

Q4: How long does the installation take?

For most compact systems, installation can be completed within 1–3 days.

Q5: How long does the molecular sieve last?

Normally, the life span is 8–10 years, depending on the quality of the air and the maintenance.