Optimization through a PSA gas generator

Optimize your industrial process with the PSA gas generator

A PSA gas generator is a type of gas generator that uses Pressure Swing Adsorption (PSA) technology to generate specific gases, such as nitrogen and oxygen. The term "Pressure Swing Adsorption" refers to the process in which gases are separated by adsorption under varying pressure conditions. PSA gas generators are often used in industrial and laboratory applications where a reliable and independent source of gases is needed. The generators eliminate the dependence on external gas suppliers and provide cost-effective, efficient, and sustainable solutions for various sectors such as food processing, electronics, chemistry, pharmaceuticals, and medical applications.

The operation of Parker's PSA gas generator

PSA gas generators use Pressure Swing Adsorption technology. In this technique, gases are separated by adsorption. During this process, compressed air is passed through an adsorbent material, usually called adsorbent. This material selectively adsorbs certain gases, while allowing other gases to pass through. The process works in four steps:

1. Adsorption – The process begins with the introduction of compressed air. The compressed air is passed through an adsorption tower filled with an adsorbent material. The adsorbent has a property of selectively adsorbing oxygen, while other gases pass through the material.

2. Separation – During the adsorption phase, the adsorbent adsorbs oxygen, while nitrogen and other desired gases pass freely through the material. This results in a gas stream with an increased concentration of nitrogen.

3. Desorption – After the adsorption tower is saturated with adsorbed gases, the adsorbent needs to be regenerated. This is done by opening a valve through which the pressure will release the oxygen, leading to desorption. The adsorbent releases the adsorbed gases, including oxygen.

4. Switching – In a PSA gas generator, multiple adsorption towers are used. While one tower is adsorbing, the other tower is being regenerated. By alternating between adsorption and desorption, the PSA gas generator can produce a continuous stream of the desired gas.

The difference between a PSA gas generator and a membrane gas generator

Gas generators use different technologies to produce specific gases. The two most common technologies are Pressure Swing Adsorption (PSA) and membrane technology.

In membrane gas generators, special fibers are used that selectively allow certain gases to pass through and block others based on size and permeability. When compressed air is passed through the membrane, oxygen is removed at the permeate outlet, while nitrogen easily passes through the membrane. This separates a gas stream with a higher concentration of nitrogen from the oxygen.

Membrane technology can only generate up to a certain purity level, while PSA technology can generate the purest form. For example, membrane technology can achieve up to 99.5% purity, while PSA technology can achieve a purity of 5ppm. Membrane technology does not require regeneration, unlike PSA technology.

What can be generated with a PSA gas generator?

Various gases can be produced using a PSA gas generator, depending on the application and the design of the generator. The most common gases are:

• Nitrogen (N2) - Important in various industrial processes, such as food packaging, chemical production, and electronics.

• Oxygen (O2) - Used in medical applications, welding processes, and various industrial production processes.

Applications of a PSA gas generator

The PSA gas generator is highly versatile and can be used in various sectors, including:

• In the chemical and pharmaceutical sectors, PSA gas generators are used for inerting or to deliver controlled concentrations of oxygen in bioreactors and fermentation processes.

Benefits of PSA gas generator

Companies can produce the required gases on-site with a PSA gas generator, making them independent of external suppliers. By not depending on external suppliers and generating on-site, there are no transportation costs, and operating costs are lower than alternative methods. The PSA gas generator ensures a continuous production of gases without the need for storage in gas cylinders. The process is energy-efficient because it does not require complex chemical reactions or high temperatures.

Various models of Parker Dominick Hunter 

As a Parker Distributor Compressed Air & Gas Treatment, we offer all types of Parker's PSA gas generators. We can deliver various PSA gas generators tailored to your specific requirements.

NitroSource PSA Nitrogen Generators use PSA technology for nitrogen production and are widely used in various industries, including food packaging, electronics, and pharmaceuticals.

Free advice on PSA gas generators?

For companies aiming for more independence, cost efficiency, and energy savings, PSA gas generators are a valuable investment. We are happy to explore the different solutions we can offer for your specific situation. If you would like more information or advice on PSA gas generators, please feel free to contact me at patrizia@interfilter.nl or +31 (0)6 57 42 00 91. Of course, my colleagues are also available via the contact details in the pop-up on the right side of your screen.