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Solubility of CO2 in TEG

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SebFrie

Chemical
Joined
Dec 4, 2002
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DE
I need values for the solubility of CO2 in TEG. Is someone experienced in purification of CO2 streams before liquification?

Sebastian
 
Try the GPSA handbook, or an article by F.Y. Jou, Fluid Phase Equilibrium, 36 (1982), p. 121

e.g. at 750 psia CO2 partial pressure:
at 75 F the solubility is ca. 95 Sm3 CO2 / std m3 TEG liquid (96.5%)
at 100 F this is ca. 70 Sm3/m3 TEG
at 120 F this is ca. 55 Sm3/m3 TEG

Solubility of CO2 in pure TEG is about 20% higher.
The relationship is not really linear, but close. You will probably overestimate CO2 solubility if you interpolate. Regards,

Joerd
 
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