Industrial Oxygen Removal

[rolyatyerttt]

I have a requirement to remove oxygen from an air line. The remaining air will be used to blanket a tank. Is there a device that will remove the oxygen. The tank has to be blanketed and nitrgen is not avalaible.

 

[BigInch]

How much O2 stream will you make. Depending on quantity either a polymer membrane air separation unit or a small liquid oxygen distillation plant might be what you need. If you have a large stream, you could contact the liquid air companies and ask for a proposal for a lease unit, or have them build a unit at your plant.

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"The problem isn't working out the equation,
its finding the answer to the real question." BigInch

http://virtualpipeline.spaces.live.com/

 

[zdas04]

Also how pure does the nitrogen need to be. The membrane units tend to leave a fair bit of oxygen in the nitrogen stream and vice versa.

David

 

[BigInch]

We used to test for purity by blowing the N2 over pure phosphorus. I don't know if they'd let you do that any more.

**********************
"The problem isn't working out the equation,
its finding the answer to the real question." BigInch

http://virtualpipeline.spaces.live.com/

 

[zdas04]

LOL. So the color of the flame indicates how much oxygen is left? I'd be surprised if the HSE folks would let that one slide today.

David

 

[BigInch]

We used to send it to Carswell AFB for some reason. Probably to keep the nucs cool??? If it smoked, there was too much O in the N. It was pretty neat just taking a little chunk of it out and letting air hit it. It would just smoke for a second then catch fire all by itself as soon as the oil coating evaporated off. What else did I learn there. Don't spill liquid O on oil, or try to stop titanium powder from burning by spraying with N2. I thought that last one was an interesting tidbit.

**********************
"The problem isn't working out the equation,
its finding the answer to the real question." BigInch

http://virtualpipeline.spaces.live.com/

 

[dcasto]

we just recommended two different options for something like this PSA or membrane. If you have large volumes and over 95% N2 purity, PSA is best.