Gas Generator Frequently Asked Questions

When you use nitrogen or oxygen gas generators in your business, the more you know about them, the better. Here are some of the most frequently asked questions about gas generators, provided by The Titus Company. If you have any questions that you don’t find answered below, don’t hesitate to get in touch with us.

What Does a Gas Generator Do?

As the name would imply, a gas generator generates nitrogen or oxygen gas for industries that need easy access to these gasses for their various applications, such as filling tires, cleaning or packaging.

How Does a Gas Generator Work?

The operation of your gas generator depends on the type you’re using. There are two main types of gas generators with different modes of action: pressure swing adsorption generators and membrane nitrogen generators.

What Is a Pressure Swing Adsorption Generator?

A pressure swing adsorption oxygen or nitrogen generator, or PSA generator, uses adsorptive materials to separate nitrogen or oxygen from other gasses for use. They’re among the most popular gas generators because they deliver very pure gas and are both cost- and eco-friendly.

What Is a Membrane Nitrogen Generator?

A membrane nitrogen generator works by using pressure to force gas into a membrane fiber bundle. This process allows the generator to filter the nitrogen out from the rest of the gas, as the nitrogen permeates the fiber at a different speed. These gas generators are popular because they have no moving parts and require no electricity to use, making them virtually maintenance-free.

Do I Need an Air Dryer With My Gas Generator?

If you use a membrane nitrogen generator for your gas generation, you should not need any additional air drying or filtration, as the membrane separator itself should filter out any water vapor.

On the other hand, if you’re using a pressure swing adsorption generator, although it should include in-line filtration of most particles, it may not be able to effectively filter out water vapor before it’s absorbed by the carbon molecular sieve that the PSA generator uses to separate the oxygen or nitrogen from the air. This issue can negatively affect the purity of the nitrogen or oxygen you produce. Therefore, it will be important for you to have a refrigerated air dryer on the inlet gas stream when using a PSA generator.

Do I Need to Replace the Carbon Molecular Sieve If I Have a PSA Gas Generator?

No. A quality pressure swing adsorption gas generator is designed so that the carbon molecular sieve will last as long as the rest of the system, assuming you care for and maintain the system properly.

How Pure Can I Expect the Nitrogen Gas I Generate To Be?

Both nitrogen membrane separators and PSA nitrogen generators can produce nitrogen at a very high level of purity. You can expect your membrane generator to generate 99.5 percent pure nitrogen, while your purity levels with a PSA nitrogen generator may be even higher — as high as 99.999 percent. The industry standard for corrosion control is 98 percent.