How Nitrogen Generators Work
The Pressure Swing Adsorption (PSA) process is the core technology behind modern nitrogen generation systems. In a PSA nitrogen generator, clean and dry compressed air is directed through adsorption vessels filled with Carbon Molecular Sieve (CMS). The CMS selectively captures oxygen molecules, water vapor, and other trace gases, while nitrogen passes through the system.
This oxygen separation process enables the production of high-purity nitrogen for a wide range of industrial applications. Depending on the required application, nitrogen purity levels can range from 97% up to 99.999%. The generated nitrogen can be stored in a nitrogen tank and supplied continuously to the production process.
If you are looking for a reliable nitrogen generator for industrial use, BERG offers advanced PSA nitrogen generation systems with intelligent control technology for worldwide monitoring, efficient operation, and maximum operational safety.
What is a Nitrogen Generator?
A nitrogen generator is an industrial system designed for on-site nitrogen production directly from ambient air. Using Pressure Swing Adsorption (PSA) technology, the system separates nitrogen molecules from oxygen and other gases to produce a continuous supply of high-purity nitrogen.
Nitrogen generators are widely used in industrial applications where reliable nitrogen supply is essential. Common uses include food and beverage packaging, chemical processing, metal fabrication, laser cutting, electronics manufacturing, and other industries that require oxidation prevention, inerting, or process protection.
BERG PSA nitrogen generators provide nitrogen purity levels from 97% up to 99.999% with flow capacities ranging from 1.4 to 1600 Nm³/h, offering an efficient and cost-effective alternative to bottled or liquid nitrogen supply.
Nitrogen Generator Benefits
Nitrogen is the most abundant gas in the world. It is the main component of air. This gas is very important in many industries.
It prevents oxidation processes, fires, and explosions. Therefore, it is in high demand in the food and beverage industry, the chemical industry, metal processing, and the electronics and semiconductor industry. To meet their nitrogen needs, companies can use nitrogen generators. This brings many advantages. There is a continuous supply, costs are reduced, and there is no dependence on suppliers.
In this article, you will learn more about the benefits and how to efficiently produce nitrogen in industry.
Advantages of On-Site Nitrogen Generation
On-site nitrogen generation systems provide significant operational and economic advantages for industrial applications. By producing nitrogen directly at the point of use, companies gain a reliable and continuous nitrogen supply while reducing dependency on external gas deliveries.
✓ Continuous Nitrogen Supply
Provides a reliable 24/7 nitrogen supply without delivery delays or production interruptions.
✓ Reduced Operating Costs
Eliminates costs for cylinder rental, transportation, refilling, and liquid nitrogen losses.
✓ Greater Operational Autonomy
Reduces dependency on external suppliers and gives full control over nitrogen availability.
✓ Energy-Efficient and Safe
Modern systems reduce energy consumption, minimize transport emissions, and improve workplace safety.
Applications of Industrial Nitrogen Generators
Nitrogen generators are found in many areas. They are an efficient solution for nitrogen supply. In the food and beverage industry, they extend the shelf life of products and keep microorganisms at bay.
Nitrogen is equally important in the chemical industry and metal processing. It stops oxidation processes.
- Food packaging
Nitrogen helps keep food fresher for longer in the food and beverage industry. It is used in packaging to keep microorganisms away, keeping cheese, meat, fruits, and vegetables fresher.
- Laser Cutting
In laser cutting, nitrogen is used to achieve clean and precise edges without oxidation. It prevents burr formation and improves the surface quality of metals such as stainless steel and aluminum.
- Pharmaceuticals
In the pharmaceutical industry, nitrogen is used to protect sensitive ingredients and ensure oxygen-free conditions. It helps maintain the stability, purity, and effectiveness of products during production and packaging.
- Chemical Industry
In the chemical industry, nitrogen stops oxidation processes. It protects chemicals and active ingredients from environmental influences.
- Electronics
Nitrogen protects sensitive components from corrosion in the electronics and semiconductor industry, allowing high-quality products to be manufactured.
Nitrogen generators are a cost-effective, efficient, and environmentally friendly solution. They are ideal for these industries.
Nitrogen Generator vs. Nitrogen Cylinders
When comparing on-site nitrogen generators with traditional nitrogen cylinders, industrial nitrogen generation systems offer significant advantages in terms of operating cost, logistics, safety, and production efficiency.
✓Cost Efficiency
Nitrogen generators eliminate the recurring costs associated with cylinder refilling, transportation, rental fees, and supply contracts. On-site nitrogen production significantly reduces long-term operating expenses, especially in continuous industrial applications with high nitrogen consumption.
✓Logistics and Supply Reliability
Traditional nitrogen cylinder supply requires transportation, storage management, and regular cylinder replacement. In contrast, on-site nitrogen generators provide a continuous nitrogen supply directly at the point of use, minimizing production interruptions and reducing dependency on external suppliers.
✓Operational Safety
Handling high-pressure nitrogen cylinders involves safety risks during transportation, storage, and manual handling. Nitrogen generators improve workplace safety by reducing cylinder handling requirements and lowering the risks associated with high-pressure gas storage.
✓Process Efficiency
Industrial nitrogen generators deliver a stable and adjustable nitrogen flow with consistent purity levels tailored to specific applications. This improves process control, reduces downtime, and increases operational efficiency in industries such as laser cutting, electronics manufacturing, pharmaceuticals, and food packaging.
For many industrial operations, on-site nitrogen generation is a more economical, reliable, and scalable solution compared to conventional nitrogen cylinder supply.
Industrial Nitrogen Production Technologies
Modern on-site nitrogen production systems separate nitrogen from ambient air and supply it in concentrated form for industrial applications. These systems provide a continuous and reliable nitrogen supply while reducing dependence on delivered gas cylinders or liquid nitrogen.
One of the most widely used methods for industrial nitrogen production is Pressure Swing Adsorption (PSA). In this process, compressed air passes through vessels filled with Carbon Molecular Sieve (CMS) material that adsorbs oxygen and other trace gases while allowing nitrogen to flow through the system.
At regular intervals, the adsorption material is regenerated by reducing the pressure and releasing the captured gases. In addition to PSA technology, membrane separation systems and cryogenic distillation are also used for nitrogen production. Membrane systems separate nitrogen from oxygen and moisture through selective permeation, providing an energy-efficient solution for many industrial applications.
The most commonly used technologies for on-site nitrogen supply are membrane separation and Pressure Swing Adsorption (PSA).
Membrane Technology
Membrane-based systems use semipermeable hollow-fiber membranes to separate nitrogen from oxygen and water vapor. These compact and low-maintenance systems are suitable for applications requiring medium nitrogen purity levels and are widely used in food packaging, beverage production, marine applications, and fire prevention systems.
Pressure Swing Adsorption (PSA) Technology
PSA systems produce high-purity nitrogen with purity levels of up to 99.999%. Using Carbon Molecular Sieve technology, oxygen and other gases are removed from compressed air to provide a stable nitrogen supply for demanding industrial processes.
PSA technology is commonly used in laser cutting, electronics manufacturing, pharmaceutical production, chemical processing, metal fabrication, and semiconductor industries where high-purity nitrogen is essential.
Both membrane and PSA technologies offer reliable, energy-efficient, and cost-effective nitrogen production. The ideal solution depends on the required nitrogen purity, operating conditions, and industrial application.
The Price: The Cost of Nitrogen Generators
The acquisition costs for a nitrogen generator can vary greatly depending on the technology, capacity, and specific requirements. Simple, smaller models for use in laboratories or small production facilities start at around 3,000 to 5,000 euros. Larger industrial systems that deliver higher purity levels and larger amounts of nitrogen can cost between 20,000 and 100,000 euros or more.
In addition to the acquisition costs, operating costs should also be considered, which depend on the energy efficiency of the generator and maintenance requirements. In the long term, however, nitrogen generators often offer significant cost savings compared to purchasing bottled or liquid nitrogen, as they provide a continuous and autonomous nitrogen supply. By eliminating transport and storage costs and minimizing production interruptions, the investment in a nitrogen generator can quickly pay off.
Here are some nitrogen generators from our range:
In contrast to a single generator, a "Plug and Play" complete package is a pre-designed and pre-installed solution that integrates and pre-configures all necessary components. Such a package includes not only the nitrogen generator itself but also all additional equipment such as air compressors, dryers, filters, and control units in a compact system.
The "Plug and Play" concept means that the system is ready for use immediately after installation without requiring elaborate setup. This makes it particularly attractive for businesses looking for a quick and straightforward solution to secure their nitrogen supply. Overall, the "Plug and Play" complete package offers a more user-friendly and time-saving alternative, especially for companies without specialized technical expertise.
Conclusion
Nitrogen generators are a great solution for companies. They make nitrogen supply more efficient, flexible, and cost-effective. Companies can meet their nitrogen requirements independently, saving costs and making them independent of suppliers.
There are different types of nitrogen generators. Membrane nitrogen generators are suitable for low purity levels. PSA generators are ideal for the highest purity requirements. With these, companies can improve their flexibility and competitiveness.
If you want to learn more about nitrogen solutions, contact our experts. We will help you find the right nitrogen applications for your business.