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Oxygen Generator Technologies: VPSA vs. PSA
Jul 05 , 2024
Many businesses across many industries need a reliable way to extract pure oxygen from the air around us in a fast, reliable, and cost-effective manner. In fact, it’s likely if you’re reading this article that you are connected to one of those industries. The good news for you is that there exists a growing base of technology that is facilitating oxygen extraction more effectively than ever. In this piece, we’ll compare VPSA vs. PSA to help you determine which one is right for your business.
1. What Is a VPSA Oxygen Generator?
A vacuum pressure swing absorption or VPSA oxygen generator is one of the more effective tools at extracting oxygen from the atmosphere around us.
The VPSA can extract oxygen from the ambient air stream by absorbing one of the most common elements in the air around us—nitrogen—thus producing a flow of purified oxygen. For higher volumes, the VPSA is very effective.
As one of the leading technologies in the oxygen generating space, VSPA technology is energy efficient and reliable.
VSPA deploys a molecular sieve called zeolite to extract the oxygen and does so at lower pressures.
It leverages vacuum pressures (differential between atmospheric pressure and absolute pressure generated by the vacuum blower) to induce oxygen and nitrogen (alongside other elements) separation.
As an onsite oxygen generator, a VSPA can often pay for itself within a year. It does this by being uniquely energy efficient, helping to keep your power bills low.
It also has a reputation for being reliable and robust, and it is less likely to experience downtime compared to other technologies. It’s also a user-friendly system, as it is easy to install and relocate as needed.
VPSA oxygen generators are an effective means of supplying high volumes of oxygen for large aquaculture, mining, and water treatment operations.
VSPA oxygen generators also have the following benefits for businesses:
When it comes to the VPSA vs PSA debate, it’s important to note that the two systems operate in generally the same way, with a key difference: the vacuum stage of the process.
PSAs operate at much higher pressure points, which allows them to forgo the vacuum stage of the process.
VPSA, by contrast, don’t need that amount of pressure, compensating for its absence with the creation of a vacuum.
As described above, it similarly uses a zeolite molecular sieve to separate oxygen out from nitrogen and other gases. Again, the difference here being that it does so at extremely high pressure, obviating the need for a vacuum.
As zeolite adsorbs nitrogen, a relatively pure stream of oxygen gas is left over as an end product, which can be used for process purposes. Oxygen purities as high as 95% can be attained.
For VPSA vs. PSA comparisons, understand that both offer a similar variety of benefits. But specifically with PSA oxygen generators, you’ll get access to:
There are many different applications for both VPSA and PSA oxygen generators, including:
Chemical manufacturing
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