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why do we use Nitrogen for storage?

why do we use Nitrogen for storage?

(OP)
Good morning everyone.


I have found that in many industries storage is done with the filling the gas inside and most of time with Nitrogen.
This is also applied to rotor storage and it is recommended to use Nitrogen of (minimum 1.5bar).


I know this has been like this for years but I just wonder, is there specific reason why we need to use Nitrogen?
I know that it does not carries moisture so it can free from corrosion, but there are other gases can do the same.

Also why it should be more than 1.5 bar?

thank you,

RE: why do we use Nitrogen for storage?

The primary reason is the low cost of nitrogen. Other inert gasses could be used in most applications

Secondary reason is that pure nitrogen is always available whenever oxygen is separated from air.

MJCronin
Sr. Process Engineer

RE: why do we use Nitrogen for storage?

I'm not sure what you mean by "rotor storage" Please explain.

Why 1.5 bar? No idea as you provide no explanation. Sometimes a nominal pressure, in this case maybe 1.5 bar) is included so that it can be monitored to make sure the inside of the vessel or pipe is still under Nitrogen blanket.

Sometimes the pressure is set so that the nitrogen blanket is above the pressure of the liquid at a particular temperature to prevent vapour emissions or boiling.

Pretty vague question so a pretty vague answer....

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: why do we use Nitrogen for storage?

Nitrogen is readily available and inexpensive.

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