The process of on-site nitrogen production can be explained as follows: The air we breathe consists of approximately 78% nitrogen and 21% oxygen. To generate nitrogen on-site, we begin by compressing atmospheric air to a pressure above 100 pounds per square inch gauge (psig). This compressed air is then directed to a nitrogen generator, which can either be a Pressure Swing Adsorption (PSA) or a Membrane system. Inside the nitrogen generator, we perform a process called "AIR SEPARATION." In simple terms, we remove the oxygen from the compressed air, leaving behind a stream of nitrogen gas. This nitrogen gas can be utilized in various applications such as food packaging, laser cutting, laboratory experiments, chemical blanketing, and more.

There are two common methods for on-site nitrogen production: membrane nitrogen generators and PSA nitrogen generators. Both methods require a source of dry, clean, and oil-free compressed air. Depending on the size of the nitrogen generator, the compressed air can be sourced from the existing compressed air system in a building or facility. In some cases, a dedicated air compressor may be necessary. If your application can tolerate a higher level of oxygen, a membrane nitrogen generator may be suitable. However, if your process requires minimal oxygen content, a PSA nitrogen generator is the better choice. Both technologies have a similar life cycle, provided they receive regular preventive maintenance as specified by the manufacturer.

Membrane nitrogen generators utilize advanced hollow fibers to separate oxygen and nitrogen from the compressed air stream. By adjusting the flow rate of air through the membrane module, you can control the air separation process and achieve the desired purity of nitrogen.

On the other hand, PSA nitrogen generators employ two towers filled with a chemical called carbon molecular sieve (CMS). Compressed air enters one tower, where oxygen molecules bond with the CMS under pressure, resulting in mostly nitrogen gas remaining. After a specified time, the two towers switch roles, with air entering the second tower while the first tower depressurizes, venting the oxygen gas into the atmosphere. By appropriately sizing the towers, it is possible to achieve various flow rates and levels of nitrogen purity.

The maintenance requirements for nitrogen production units are relatively minor. It is crucial to maintain the compressed air filtration packages as recommended by the manufacturer to ensure trouble-free operation for years. Typically, the necessary maintenance can be performed in-house by your maintenance staff.

If you believe that your application could benefit from on-site nitrogen production, please contact us for a price quote. If you have any further questions regarding on-site nitrogen production, feel free to call us at 8447203393 or submit an inquiry through our website.