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Working principle of PSA nitrogen generator

Release date:2022-10-11    author: Suzhou XITE

[Suzhou XITE Gas] Working principle of PSA nitrogen generator

Pressure Swing Adsorption (PSA) is one of the widely used technologies for on-site nitrogen production for industrial and medical applications.PSA nitrogen generators consist of two adsorbers filled with carbon molecular sieves that have the ability to adsorb oxygen from compressed air. The PSA process works by drawing in ambient air, which is then filtered and compressed. The oxygen is adsorbed in the carbon molecular sieve while the nitrogen-rich gas moves through the adsorber. The process has the ability to reduce the oxygen concentration to the required specification.

Technical specifications:-

Capacity range: 25 m3/h to 1000 m3/h

Nitrogen purity: 99.99

Nitrogen pressure: up to 25 bar

Dew point: -40 degrees Celsius to -80 degrees Celsius

How does a PSA nitrogen generator work?

While adsorption is completed in one adsorber, the second adsorber is completely regenerated by depressurizing to ambient pressure. The oxygen is moved back into the atmosphere. After a period of adsorption in one adsorber, the second adsorber is activated by the process controller to produce nitrogen without interruption. Our PSA nitrogen plants are manufactured from the most medium to large size materials and are known for their long lasting performance and ease of operation.

Membrane Nitrogen Plants

In addition to PSA, membrane technology is becoming one of the industry's larger processes for generating high purity nitrogen. It is preferred because of its lower initial investment and energy consumption compared to PSA technology. The membrane air separation process works by bringing ambient air into the membrane module, where the gas is separated based on the difference between diffusivity and solubility. In this process, the separation of oxygen from the ambient air occurs upstream because of its high diffusivity, while nitrogen is collected downstream.


The cheapest method of nitrogen production

High purity with low amount of nitrogen and vice versa

Seamless airflow design for high reliability

Operates at lower pressures

Industrial Applications

Nitrogen is used in a wide variety of industries, some of which are listed below.


Nitrogen is widely used in the production of pharmaceutical products, including antibiotics. It is used in the form of nitrous oxide for the formulation of narcotic drugs.

Chemical plants

Nitrogen is an inert gas used as a substitute for oxygen to prevent explosions in volatile environments such as chemical plants.

Food packaging

Due to the inert nature of the gas, nitrogen is widely used in food packaging to create an improved atmosphere. With the replacement of oxygen, the integrity and flavor of the food remains intact and can be preserved for a longer period of time.


Nitrogen is used in the manufacture of electronic products for soldering. It helps reduce surface tension in order to cut a neat fracture from the solder joint.

Stainless steel manufacturing

In the manufacture of stainless steel, nitrogen is used in plating, which makes the finished product stronger and more resistant to corrosion.

Mining Industry

Nitrogen is used to avoid oxygen in the air in order to extinguish fires. When a mine is abandoned, the area is filled with nitrogen to ensure that an explosion does not occur.

Advantages of owning a field nitrogen generator (nitrogen generator):

Before using the nitrogen generation system on site, many enterprises in the industry have no choice but to buy nitrogen elsewhere. However, the use of on-site nitrogen generator can eliminate all the troubles related to bulk purchase of nitrogen. Our nitrogen generator is an option with the greatest benefit: the average cost of producing nitrogen by ourselves is one-third to one-half lower than the relevant cost of purchasing nitrogen. Using the on-site nitrogen generator system, there is no need to pay the freight when purchasing nitrogen. Our nitrogen generator system usually allows you to recover the cost within 18 months.

In addition to economy, the nitrogen generator system of the on-site nitrogen generator also provides:

Reliability - the nitrogen generator system, that is, the on-site nitrogen generator system, uses the surrounding air to generate nitrogen. Therefore, our customers never have to worry about the shortage of nitrogen. Reduce stress - improve safety through storage. Simple - we make it easy for people without relevant equipment experience. The visual touch screen control can control the stability of gas purity. At the same time, it can operate self diagnosis, visual operation diagram and maintenance plan reminder on the screen. Flexibility - our equipment is small and can be transported under various conditions, so as long as there is air and electricity, the equipment can operate stably anywhere. Fully automatic - once a downstream request is detected, production begins.

Why use XITE nitrogen generator?   Our nitrogen generator system provides reliable on-site nitrogen supply for various industries, which is famous in China and Southeast Asia. Our on-site nitrogen system can produce nitrogen with purity up to 99.999%. For our nitrogen generator, it can meet the nitrogen production in any place and any complex environment. To learn more about the nitrogen generator system and the practical application demand scheme in your industry, please contact us immediately at + 86 18112526805 (consultant).

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