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How on-site nitrogen production works - PSA versus membrane technology

Release date:2022-07-13    author: Suzhou XITE

[Suzhou XITE Gas] How on-site nitrogen production works - PSA versus membrane technology

Before nitrogen can be produced on site, the gas must be obtained and transported to different industrial applications via cylinders and tanks. This process can be very cumbersome and problematic. Operators have therefore chosen one of the two available technologies for adequate on-site nitrogen production. This article explores how nitrogen generators (PSA nitrogen generators, nitrogen plants) work and their various benefits to help you discover which system is best suited to your objectives.

How do on-site nitrogen generators work?

The air we breathe is approximately 78% nitrogen, 21% oxygen, and negligible amounts of other gases. Industrial operators have found ways to use this higher percentage of nitrogen to generate nitrogen for a number of applications.

On-site nitrogen generation involves separating the nitrogen from the other air components. It ensures a reliable and economical supply of nitrogen for laser cutting, chemical covering, food packaging and a range of other industrial applications.

Whatever your needs, on-site nitrogen generation units are preferable and more profitable than traditional nitrogen supply methods: purchased from suppliers and transported to site in cylinders and tanks. They rely on membrane or variable pressure adsorption (PSA) technology to achieve the high purity levels suitable for any application. The next sections reveal the differences between these two technologies, while taking a closer look at why a nitrogen generator (PSA nitrogen machine, nitrogen plant) installation may be the best option for your nitrogen supply.

Contact our team today to get a quote for our nitrogen procurement systems.

PSA technology versus membrane technology for on-site nitrogen production

PSA and membrane technologies are the two main production methods widely used for on-site nitrogen generation for a variety of industrial applications. Although both technologies require different amounts of clean, dry compressed air for their operation, they work on different principles.

PSA Nitrogen Generation Systems

A PSA nitrogen generator (PSA nitrogen machine, nitrogen plant) effectively separates nitrogen from the gas stream. It does this safely, reliably and economically with the aid of carbon molecular sieves (CMS).

With a PSA nitrogen generator, the operator fills two containers with CMS which adsorb oxygen molecules from the compressed air passing through them. While one is adsorbing, the other is depressurising, allowing a small amount of nitrogen to flow downwards to release the adsorbed oxygen. This continuous process ensures that the two vessels alternate between adsorption and depressurisation to produce nitrogen gas with a purity of up to 99.9995%.

The benefits of PSA systems

Some of the key benefits of PSA systems for nitrogen production include

Nitrogen purity levels of up to 99.9995%

Highly reliable nitrogen production system

Low maintenance levels due to the use of clean and dry compressed air feed

Highly consistent as it produces large quantities of nitrogen

Membrane nitrogen generators

The separating membrane is the most critical part of the nitrogen membrane system. It consists of thousands of hollow fibres through which compressed air is passed to ensure efficient nitrogen production. Oxygen, carbon dioxide and other gases pass through the hollow fibres more easily than nitrogen. These gases are then released into the atmosphere, leaving a very pure stream of nitrogen at the membrane outlet. The operator only needs to vary the flow rate and pressure of the compressed air to achieve a very high level of purity.

Benefits of hollow fibre membrane systems

The main benefits of using hollow fibre membrane systems for on-site nitrogen production include

Due to its mountability, it is easily applied in confined spaces.

Produces high quality nitrogen with a purity of 95-99.9%.

Its compact and noiseless operation makes the production and supply of nitrogen more environmentally friendly.

Low maintenance requirements due to its low number of moving parts.

High levels of durability and reliability due to limited maintenance requirements.

[Suzhou XITE Gas] How on-site nitrogen production works - PSA versus membrane technology

Benefits of purchasing an on-site system from Suzhou XITE Gases

Suzhou XITE Gases nitrogen systems offer the highest quality standards for on-site nitrogen production. Here are some of the main benefits of purchasing these systems.

Cost-effective

Time saving

Very safe and reliable 

More environmentally friendly nitrogen supply 

Cost-effective

Purchasing nitrogen from a supplier consumes more money than an on-site generator. Some of the additional costs it incurs include the cost of transportation, storage and loss of product during transit. Fortunately, Suzhou XITE Gases offers cost-effective on-site nitrogen generation systems for purchase and procurement.

Time savings

Due to logistical challenges, operators may experience downtime during critical operations. However, with a nitrogen system from Suzhou XITE Gases, you can be assured of a proper nitrogen supply for a variety of processes.

Safety and reliability 

A leak from a nitrogen cylinder or tank is toxic to humans. However, this can be avoided by using Suzhou XITE Gas on-site nitrogen generators, as they significantly reduce the need for pressurised nitrogen containers.

You should also note that Seagate Gases Suzhou's Seagate Gases are ASME certified, guaranteeing you reliable and safe operation.

A greener nitrogen supply

Suzhou XITE Gases provides an environmentally friendly nitrogen supply by integrating other systems such as desiccants that prevent all forms of air contamination.

In addition, Suzhou XITE Gas systems are renowned for their high offshore application ratings, revolutionary programmable logic controllers (PLCs), seamless automatic-manual switching, state-of-the-art remote monitoring, effective dew point monitoring and low and multi-voltage systems. Their safe and reliable systems ensure a continuous supply of nitrogen, making project completion cost effective.

Contact Suzhou XITE Gases for efficient on-site nitrogen production systems 

Suzhou XITE Gases offers its customers a unique experience in providing the most suitable nitrogen for their nitrogen production needs. We have established cost-effective on-site nitrogen production technology to meet a number of industrial and customer specifications.

Contact us today to find out more about our reliable on-site nitrogen production systems.


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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