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Predicting Water Content of Natural Gas 1

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LavishOne

Chemical
Joined
Jun 28, 2002
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Location
US
Hi All!
I need some help on predicting the water content in Natural gas (Say just C1,C2 and C3 only). I have used Charts (also with sp.gravity corrections earlier) but I need some mathematical correlation / equation so i can use it in a computation procedure. Do you know one? or where i can find one? Need not be very accurate, just a preliminary prediction of the sat water content, given its Temp, Press, gas composition, sp gravity(if needed). Thanks :)
 
You can try correlation proposed by Institute of Gas Technology, Chicago.
 
Could you please be more specific???
I scoured the GTI website, but in vain.
I would really appreciate if you could send me a link.

Thanks
 
I have a spreadsheet based on the GPSA curves for water content of natural gas, where there is a correlation provided for the water content. If you send me your email address I'll send you a copy.
 
The maximum possible moisture is at saturation. Find the water vapour pressure at the natural gas feed temperature and then calculate moisture as:

mositure (mf)= vp of water/(pt-vp water); pt = gas total pressure.

I hope it is clear.

P.
 
regarding curves for natural gas, i would find a calculation. i need to verify water content at 3500 to 5000 psi and down to -40f,,where can i get graph, are there any posted anywhere on the web..send link or site adress
 
There is a formula on GPA Reference Bulletin 181-86, but you have to reference a couple of look-up tabels to accurately use.
 
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