5 replies to this topic

[cdrueda]

Hello,

 

If both fuel gas and inert gas are available, which gas is more advantageous for use as condensate tank blanket gas? I am looking for some operations experience.

 

Thanks,

[Bobby Strain]

Methane is a significant greenhouse gas. Use nitrogen to preserve the planet.

 

Bobby

[cdrueda]

We will be implementing a VOC recovery unit to use the VOCs and blanket gas (fuel gas or IG) in order to fuel a boiler. So methane is not being released to the atmosphere. Yet the question is if somebody knows the pros and cons of these blanketing systems.

[Art Montemayor]

You have failed to fully identify the application and all basic data.  Unless there are other issues or problems, I resort to using natural gas in an "oil patch" location.  The decision as to whether to use natural gas or nitrogen in an area where you don't have any restrictions or sentiments is very simple and decided from a strictly economic and convenience point of view: use natural gas.

 

If you find yourself in a well-stocked and maintained infrastructure, then the availability and cost of nitrogen is less and often the choice.  I presume you mean nitrogen when you use the term inert gas and natural gas instead of fuel gas.  The final decision might also be restricted to nitrogen when the liquid stock is a sensitive, high-purity, and expensive product.

[P.K.Rao]

Fuel gas has some disadvantages because it may contain hydrogen sulfide which will make the material which is blanketed, corossive.

[fallah]

cdrueda,

 

Because you are going to implement VOC recovery to the system in order to fuel a boiler, it's preferable using fuel gas for tank blanketing...