PSA nitrogen generator

PSA nitrogen generator supplier

A PSA nitrogen generator is a specialized device used to produce high-purity nitrogen gas by extracting nitrogen molecules from the surrounding air. These generators are commonly employed in various industries and applications where a consistent supply of pure nitrogen is required. Here’s an overview of how a PSA nitrogen generator works and its key features:

Principle of Operation: A PSA nitrogen generator operates on the principle of selective adsorption, which exploits the different adsorption characteristics of nitrogen and other gases present in ambient air, such as oxygen, carbon dioxide, and trace gases.

1. Air Intake: The process begins by drawing in ambient air through an inlet.
2. Filtration: The incoming air is typically passed through filters to remove contaminants, ensuring that the air entering the PSA system is clean and free of particles.
3. Compression: The filtered air is then compressed to elevate its pressure, making it suitable for the adsorption process.
4. Adsorption Towers: A PSA nitrogen generator comprises two or more adsorption towers filled with a specialized adsorbent material, such as carbon molecular sieve or zeolite. These materials have a greater affinity for oxygen and other impurities than for nitrogen.
5. Adsorption Phase: The compressed air is directed into one of the adsorption towers, while the other tower is in the regeneration phase. Inside the active tower, the adsorbent material captures and retains the oxygen and other impurities, allowing the nitrogen to pass through.
6. Nitrogen Collection: The nitrogen-enriched gas, with a significantly higher concentration of nitrogen, exits the adsorption tower and is collected for use. The purity of the produced nitrogen often exceeds 99.9%.
7. Regeneration: After a predetermined interval, the system switches the flow of air between the two towers. The tower that was actively adsorbing impurities now goes through the regeneration phase. During regeneration, the pressure in the tower is reduced, releasing the captured gases and preparing the adsorbent material for the next adsorption cycle.
8. Cycle Continuation: The PSA nitrogen generator continues cycling between adsorption and regeneration phases, ensuring a continuous and reliable supply of high-purity nitrogen gas.

Key Features:

• High Nitrogen Purity: PSA nitrogen generators are known for their ability to produce nitrogen gas with exceptionally high purity levels, making them ideal for a wide range of applications, including food packaging, electronics manufacturing, and pharmaceuticals.
• Reliability: These generators are designed for continuous operation and are highly reliable, ensuring a consistent nitrogen supply.
• Cost-Efficiency: PSA nitrogen generators are cost-effective in the long run, as they eliminate the need for nitrogen gas cylinders or liquid nitrogen deliveries.
• Ease of Use: They are relatively easy to operate and require minimal maintenance, making them practical for various industries.
• Customization: PSA nitrogen generators can be customized to meet specific flow rate and purity requirements, adapting to different applications.

Working principle:

PSA, also known as Pressure Swing Adsorption. Pressure swing adsorption (PSA) is a new gas separation technology that utilizes the difference in adsorption performance of molecular sieves on different gas molecules to separate gas mixtures. It uses air as the raw material and utilizes a highly efficient solid adsorbent to selectively adsorb nitrogen and oxygen, separating them from the air. The separation effect of carbon molecular sieve on nitrogen and oxygen is mainly based on the different diffusion rates of these two gases on the surface of carbon molecular sieve. Gas with smaller diameter (oxygen) diffuses faster and more enters the solid phase of the molecular sieve. In this way, nitrogen enriched components can be obtained in the gas phase. After a period of time, the adsorption of oxygen by the molecular sieve reaches equilibrium. Based on the different adsorption capacity of carbon molecular sieve for adsorbed gas under different pressures, reducing the pressure causes the carbon sieve to remove the adsorption of oxygen. This process is called regeneration. The pressure swing adsorption method usually involves parallel connection of two towers, alternating pressure adsorption and decompression regeneration, to obtain a continuous nitrogen flow.

Product features:

1. The raw air is taken from nature, and only compressed air and power supply are needed to produce nitrogen. The equipment has low energy consumption and low operating costs.
2. The nitrogen purity adjustment is convenient, and the nitrogen purity is only affected by the nitrogen exhaust volume. The purity of ordinary nitrogen production can be adjusted between 95% -99.99%, while high-purity nitrogen production machines can be adjusted between 99% -99.9999%.
3. The equipment has a high degree of automation, fast gas production, and can be unmanned. To start or shut down, simply press the button and nitrogen will be generated within 10-15 minutes of starting up.
4. The equipment process flow is simple, the equipment structure is compact, the footprint is small, and the equipment device has strong adaptability.
5. The blizzard method is used to load the sieve, avoiding the phenomenon of sieve pulverization caused by high-pressure airflow impact, and ensuring the long-term use of the molecular sieve
6. The digital flowmeter is a secondary instrument for industrial process monitoring with pressure compensation and high precision, and has the function of instantaneous flow rate and cumulative calculation.

Industry application scope:

1. SMT industry applications
Nitrogen filled reflow soldering and wave soldering can effectively suppress the oxidation of solder, improve welding wettability, accelerate wetting speed, reduce the generation of solder balls, avoid bridging, reduce welding defects, and achieve good welding quality. The purity of nitrogen used is greater than 99.99% or 99.9%. Kaiyue cooperates with most domestic and foreign nitrogen filled reflow soldering and wave soldering equipment manufacturers, We have equipped hundreds of cost-effective pressure swing adsorption nitrogen generators for many well-known SMT electronic manufacturers, and have a huge customer base in the SMT industry, with a market share of over 90%.
4. Ammonia selective welding, blowing and packaging are used in the electronic components industry. Scientific nitrogen inert protection has been proven to be an essential step in the successful production of high-quality electronic components
5. The application of gas in the chemical and new materials industries creates an anaerobic atmosphere in chemical processes, improves the safety of production processes, and provides power sources for fluid transportation. Petroleum: can be used for nitrogen sweeping of pipelines and containers in systems, nitrogen filling of storage tanks, displacement leak detection, combustible gas protection, and also for diesel hydrogenation and catalytic reforming.
6. Powder metallurgy, metal processing industry, heat treatment industry application, annealing and carbonization of steel, iron, copper, aluminum products, high-temperature furnace protection, low-temperature assembly and plasma cutting of metal components, etc
7. The food and pharmaceutical industry applications are mainly used in food packaging, food preservation, food storage, food drying and sterilization, pharmaceutical packaging, pharmaceutical ventilation, pharmaceutical conveying atmosphere, etc
8. Other usage areas
In addition to being used in the above-mentioned industries, nitrogen production machines are widely used in many fields such as coal mines, injection molding, brazing, tire nitrogen filling, rubber vulcanization, etc. With the progress of technology and social development, the use of nitrogen devices is also becoming more and more widespread. On site gas production (nitrogen production machines) has gradually replaced traditional nitrogen supply methods such as liquid nitrogen evaporatio.