LNG Tank Cooling with LN2

[rruipere1]

Hello Folks, I wonder if somebody has ever made the cool down of an LNG tank using liquid nitrogen.
Thanks.

 

[IRstuff]

Why wouldn't you just use the LNG and recompress the stuff that vaporizes?

TTFN

FAQ731-376

 

[rruipere1]

Well, what if there is no LNG available?

 

[IRstuff]

Then why would you need to cool down an LNG tank, unless you were getting ready to fill it?

TTFN

FAQ731-376

 

[iainuts]

Hello Folks, I wonder if somebody has ever made the cool down of an LNG tank using liquid nitrogen.

There's no reason why you couldn't, as long as the tank was designed and built to handle both the temperature and weight. Note that the temperature is low enough the manufacturer will need to use typical steels used in the manufacture of any cryogenic tank, but the density is considerably lower. Verify with the manufacturer that the tank can handle the weight.

 

[rruipere1]

Ok, so the only problem is that. Thanks.

 

[dcasto]

I use a truck load of liquid nitrogen to cool down my LNG plant before I start it up, its cheaper. You don't need to fill the tank, just add enough to chill it down.