Vapor density in kg/m3 in CO2 absorber

  • Thread starter timvk
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  • #1
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hello all,

I got a bit of a problem. I want to calculate the vapor density (kg/ m3 or lbs/ ft3) with the following facts:

temp: 40C
pressure : 20-31 bar
flow rate: 1000-10000 kmole/ hr
MW avg: 10-12 g/ mol (it is a mixture of H2, CO, CO2, CH4, H2O)> mostly H2


I wanted to know which formula/ method I have to use to calculate the vapor density. Hope someone can help me

Cheers,

Tim
 

Answers and Replies

  • #2
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maybe it makes it more realistic when I say this:

It is about a exit gas from a Steam Methane Reformer after water gas shifts.

The mol% of the exact compositions are:
75.22% H2
19.27% CO2
4.22% CH4
0.30% CO
0.98% N2
rest is water

temp is 40C
pressure: 26.5 bar
4640 kmole/ hr

Still hope someone could help with this problem
 
  • #3
Q_Goest
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  • #4
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Thanks,

I will look it up in more detail. For now I used the Ideal gas law (assumed it is an ideal gas with compressibility of 1)

cheers,
 

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