IATT AiroGen® Laboratory generators use Pressure Swing Adsorption technology (PSA) to produce pure nitrogen gas from atmospheric air supplied by an external or internal air compressor. PSA produces nitrogen purity of higher than 99.5% up to 99.9999%.
The IATT AiroGen® Laboratory Generator range offers a safe and simple to use efficient technology for high purity H2, N2 and ZERO AIR analytical grade laboratory gases. The technology makes the gas cylinder redundant and the high purity gases you require available as and when you need them. IATT AiroGen® Lab Gas Generators offer a module design and can also be stacked to meet compact storage requirements making them perfect for usage within multiple generation applications.
To fully understand lab gas generators and swing adsorption technology, we must first explore what adsorption is. Adsorption refers to a gas application such as nitrogen generation and is the accumulation of molecules of oxygen and other trace gases.
This accumulation is used to form a thin film on the surface of a specifically selected solid, such as carbon, by intermolecular forces. The adsorption process involves a mass transfer and differs from absorption, where a specific fluid is dissolved by a liquid or solid. Adsorption is a reversible process and facilitates the constant use of the system to generate nitrogen on a sustainable scale for commercial use.
Now, with the definition out of the way, let’s explore how nitrogen generators and the process of nitrogen generation work. PSA Nitrogen is generated the process of adsorption where the adsorptive properties of specific media, such as a Carbon Molecular Sieve, are used. Oxygen and other trace gasses found through the process are consequently adsorbed onto the adsorptive media at varying portions, depending on the system pressure present. In turn, the nitrogen passes through the media because of the fact that its molecular structure is too large to infiltrate the fine permeability of the adsorptive media in question.
The system utilised within our lab gas nitrogen generators and the generation process in general is with two pressurised towers to contain the adsorptive media. Here, the clean dry compressed air enters at the bottom of one of the towers where oxygen, carbon dioxide, moisture, some hydrocarbons and trace gases are adsorbed. Nitrogen then passes through the adsorbent media bed into a buffer tank, prior to the outlet where it is subject to additional filtration, and is pushed on for use in the analytic application. After a predetermined time, which is dependant on the purity of nitrogen required, the tower switches to regenerative mode and streams the pressurised compressed air into the second tower.
This is where the term Pressure Swing originates and is put into action.
Then, the process begins again. The first tower finally depressurises and the adsorbed oxygen and other trace gases are distributed and expended to atmosphere.
If you have any queries about the application or specific usage of any of our products, including lab gas generators, laboratory nitrogen generators or anything else listed on our site, then please do not hesitate to get in touch.
Our team are vastly experienced and highly knowledgeable and we are experts in the industry. We can answer any technical queries surrounding the various products and services we provide, from industrial oxygen generators to nitrogen generators, compressed air dryers and more.
To get in touch, you can visit this web page, drop us an email at email@example.com or call our head office on 0191 477 0060. You can also request a free quote via these mediums or fill in our “speedy” request form for a quick call back.