Shanghai Rich Gas Technology Blog

 Nitrogen is a vital industrial gas used across many sectors, from food packaging and electronics to pharmaceuticals and metal processing. Among the various methods of producing nitrogen on-site, Pressure Swing Adsorption (PSA) and membrane separation are two of the most commonly used technologies. This article highlights the main differences and similarities between these two nitrogen generation methods and provides a general insight into how on-site systems function. PSA  Nitrogen Generation ​ Pressure Swing Adsorption (PSA) technology utilizes the concept of selective adsorption to isolate nitrogen from ambient air. The system typically includes two separate vessels filled with a material known as carbon molecular sieve (CMS). This material has the unique ability to adsorb oxygen, moisture, and trace gases while allowing nitrogen molecules to pass through. In a PSA system, compressed air is directed into the first vessel, where oxygen and other unwanted gases are ...

  1. Pressure Swing Adsorption (PSA) Oxygen Generator   PSA is the most widely used method for industrial oxygen production. These generators separate nitrogen from ambient air using a pressurized tank filled with zeolite, a specialized material that acts as a molecular sieve to selectively absorb nitrogen while allowing oxygen to pass through.     How It Works:   1. Ambient air is compressed and passed through a zeolite-filled tank.   2. The larger nitrogen molecules are trapped by the zeolite, while the smaller oxygen molecules flow through for collection.   3. The system then releases pressure, venting nitrogen back into the atmosphere.   4. The cycle repeats, ensuring a continuous oxygen supply.     PSA generators  typically produce 90–95% pure oxygen, though additional cycles can refine the concentration to over 99%.     Additional Applications:   - PSA technology can also be used to generate nitrogen by col...

  What Does an Oxygen Generator Do?   Oxygen generators  extract oxygen from compressed air, supplying it in real time for industrial applications or storing it in pressure tanks. These generators are used in a wide range of industries, from gold mining to aquaculture, where a reliable oxygen supply is essential.     Normal ambient air consists of 78% nitrogen, 21% oxygen, and trace gases such as argon and carbon dioxide. An oxygen generator removes nitrogen and other gases, delivering concentrated oxygen for various uses.     Oxygen generators come in different sizes, from compact, soda-can-sized units to large industrial systems that occupy entire rooms. Despite their size differences, they all serve the same fundamental purpose: providing a safe and consistent supply of oxygen gas.     Why Businesses Use Oxygen Generators   Companies requiring large quantities of oxygen often start by purchasing pre-filled tanks from supplie...