Journal
AICHE JOURNAL
Volume 61, Issue 9, Pages 3038-3052Publisher
WILEY
DOI: 10.1002/aic.14885
Keywords
PC-SAFT; water content; acid gas; natural gas
Categories
Funding
- Abu Dhabi National Oil Company (ADNOC)
- Gas Processors Association (GPA)
- Robert A. Welch Foundation [C-1241]
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Water content of three carbon dioxide containing natural gas mixtures in equilibrium with an aqueous phase was measured using a dynamic saturation method. Measurements were performed up to high temperatures (477.6 K=400 degrees F) and pressures (103.4 MPa=15,000 psia). The perturbed chain form of the statistical associating fluid theory was applied to predict water content of pure carbon dioxide (CO2), hydrogen sulfide (H2S), nitrous oxide (N2O), nitrogen (N-2), and argon (Ar) systems. The theory application was also extended to model water content of acid gas mixtures containing methane (CH4). To model accurately the liquid-liquid equilibrium at subcritical conditions, cross association between CO2, H2S, and water was included. The agreement between the model predictions and experimental data measured in this work was found to be good up to high temperatures and pressures. (c) 2015 American Institute of Chemical Engineers AIChE J, 61: 3038-3052, 2015
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