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PSA Oxygen Plant

Minnuogroup is at the forefront of designing and assembling custom-engineered “plug-and-play” oxygen generating systems that are ready to use.

Estimated PSA Oxygen Plant Cost

The approximate cost will be:
Oxygen concentration (%)
Productivity (m 3 / h)
Oxygen pressure (bar)
Delivery type

PSA Oxygen Plant

There are many oxygen generator manufacturers, but MINNUO Group is the leading manufacturer producing PSA oxygen generator, Providing cost-saving gas solutions.

PSA oxygen plants can be used in many industries such as the metal industry, chemical, and petrochemical industry, glass industry, fish farming, oil and gas industry etc.

PSA Oxygen Plant Types

Psa Oxygen Generator

The MINNUO PSA Oxygen Generator uses Pressure Swing Adsorption technology to produce oxygen from compressed air. It is a reliable and durable on-site system that provides an affordable and reliable source of oxygen supply in various industrie such as hospitals, laboratories, steel production, and aquaculture. MINNUO PSA generators are suitable for medical use globally and guarantee complete adherence to various standards including European Pharmacopoeia, ISO 7396-1, MDD (Medical Device Directive), PED (Pressure Equipment Directive), and certification under CE medical regulations.


Skid-mounted Oxygen Generator

Skids are a compact and cost-effective solution for producing oxygen on-site. They are a complete set of devices that can be controlled and managed by skilled workers, without requiring substantial installation costs. Skids are designed to be “plug and play,” meaning they can be easily and quickly set up according to the provided directions. A skid typically includes a compressor with a dryer, filters, a oxygen pressure vessel, and a oxygen generator, but it can be customized to meet your specific requirements. With a skid, you’ll have everything you need to produce oxygen on-site according to your exact specifications.


Containerized Oxygen Generator

An oxygen generator contained within a modified sea container is a self-contained unit that consists of pre-assembled equipment, such as an air compressor system, oxygen generator, and optional oxygen booster compressor. This portable system is both cost-effective and space-efficient. The oxygen generator operates efficiently with minimal maintenance, producing on-site and on-demand oxygen quickly. Additionally, it’s easily transportable and can be relocated to various locations as needed.



Minnuo Group is a professional manufacturer of oxygen & nitrogen generators, with over 22 years of experience in the industry. Our products are known for their quality and reliability, and are used by businesses and individuals all around the world. We’re dedicated to providing our customers with the best possible products and service, and always put our customers first.

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    How Does Our Psa Oxygen Plant Work?

       PSA oxygen plant uses clean compressed air as raw material, and high quality zeolite molecular sieve as adsorbent to produce oxygen from air under a certain pressure. The compressed air, which has been purified and dried, is adsorbed under pressure and desorbed under reduced pressure in the adsorber. Due to the aerodynamic effect, the rate of diffusion of nitrogen in the micro-pores of the zeolite molecular sieve is much greater than that of oxygen. Nitrogen is preferentially adsorbed by the zeolite molecular sieve and oxygen is enriched in the gas phase to form finished oxygen. Then by reducing the pressure to atmospheric pressure, the adsorbent desorbs the adsorbed nitrogen and other impurities to achieve regeneration. Generally two adsorption towers are set up in the system, one tower adsorbs and produces oxygen, the other tower desorbs and regenerates, and the PLC program controls the opening and closing of the pneumatic valve, so that the two towers alternately cycle, thus obtaining a high purity of oxygen (93% ± 3%).

  •     Fast start-up, with qualified oxygen available in 15 to 30 minutes.
  •     Fully automatic operation of the equipment, the whole process can be unattended.
  •     Highly efficient molecular sieve filling, tighter and more solid, longer service life.
  •     Stable and adjustable pressure, purity, and flow rate to meet different needs of customers.
  •     reasonable structure, safe and stable, and low energy consumption.


        1.Unique desiccant loading system
        2.Compressed air cutting system at adsorber inlet
        3.Protective, drying layer at the bottom of the adsorber
        4.Dynamic adsorption layer pressing system
        5.Automatic adjustment of adsorption cycles
        6.Fast start-up, with qualified oxygen available in 15 to 30 minutes.
        7.PLC control, automatic operation
        8.Highly efficient molecular sieve filling, tighter and more solid, longer service life.
        9.Stable and adjustable pressure, purity and flow rate to meet different needs of customers.
         10.reasonable structure, safe and stable, low energy consumption.
        11.Purity alarm system below 90% alarm
        12.Oxygen decontamination (medical option)
        13.Stainless steel piping allows for cleaner gas in the pipeline, and the smooth interior of the pipeline reduces pressure drop and gas loss, making it more energy efficient

Oxygen generators PSA and VPSA consist of two adsorption columns filled with cyalite (molecular sieve) , in the layer of which air is separated.In the manufacture of the PSA oxygen plant , a unique adsorber filling system developed by our company’s specialists is used, which allows to increase the service life of cyalite, protect it from abrasion and reduce its carryover, which in turn increases the maintenance interval of pneumatic valves.The compressed air distribution system makes it possible to use the entire adsorbent bed and achieve the maximum efficiency of the oxygen station while saving electricity and compressed air.

Main Compents of PSA Oxygen Generator

PLC Panel

simens logo for our nitrogen plant PLC Panel

Process nitrogen anlyzer ,Core components imported from Germany

Molecular Sieve from JALOX,UOP , CMS

Molecular Sieve from JALOX, UOP ,CMS

nitrogen plant manufacturer

Germany pneumatic valves

nitroten plant Germany pneumatic valves from burkert

Solenoid valves

Solenoid valves - AirTAC

ASME standard air tank

How to choose the right PSA oxygen generator?

1. Calculate how many cubic meters of oxygen per hour are required?

There are two types of production of oxygen 

  • Direct connection to the hospital oxygen supply system
  • In Hospital oxygen production, each patient requires oxygen of 20 l/mins, requiring 1.2 m³ /hour.
  • Filled oxygen cylinders
  • For filling oxygen cylinders, it is necessary to determine 1. the type of oxygen cylinder and 2. the working pressure.

       eg, 40L/200bar oxygen cylinder, 40*200=8000L, about 8m³ of oxygen capacity, then multiply, e.g., filling 100 cylinders/day.100*8=800 m³ of oxygen /day. the oxygen plant working 20 hours, 800/20= 40, then 40 m³ oxygen machine is your model

2、Tell us the altitude of your local area

Normal poster below 1km. Higher altitudes require additional compressors

3、Determine your local voltage and frequency

The voltage in Australia is 240V and the frequency is 50HZ.

The voltage in Belgium, France is 230V and the frequency is 50HZ.

Getting Your Oxygen Expert

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Frequent Asked Question

The biggest costs of an oxygen generator are the compressor and the molecular sieve. Selecting a screw air compressor in general

  • Recommend the use of screw air compressor (oil content ≤ 10ppm), can effectively increase the efficiency of the oxygen system
  • The rated exhaust pressure of the compressor is recommended to be 0.5-0.7Mpa, too high or too low is not good.
  • When the altitude is >1000m, the atmospheric pressure should be considered, and the compressor should be considered larger.
  • Recommended brands: Atlas Copco, Ingersoll Rand, Minnuo, SULLAIR, Kaeser

The purity of oxygen produced by the PSA process is typically 93±3%. The remaining argon, 95% for industrial oxygen production, and the World Health Organisation medical standard for PSA oxygen generators is 93%±3%. If 99% or more is required. Mention the need to add a purification device.

1. For hospital beds: 2-3LPM per bed can be used, for example, 100 beds is 300LPM (300*60=18000L/hour=18Nm3/hour), it is recommended to use 20Nm3/hour equipment, which is our MNPO-20/93 equipment.
2. For filling oxygen bottles: the volume of oxygen stored in each oxygen bottle is water volume * filling pressure, for example: 100 bottles of 40L oxygen bottles are filled every day, and the filling pressure is 150 bar, so each bottle is about 6 cubic meters of oxygen, 100 bottles is 600 cubic meters, according to the calculation of 24 hours a day, 25Nm3/hour equipment is needed.

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