Prediction of water content of carbon dioxide using the PC-SAFT equation of state

Information about water content in carbon dioxide is of particular importance to the transfer andprocessing of natural gas .Experimental results for the water content are collected in literatures for thecarbon dioxide-rich phase at temperatures ranging from 298.15(K) to 373.15(K) and pressure of 0.69(MPa) to 7.17(MPa). The goal of this work is to check the ability of the PC-SAFT equation to predict thesolubility of water (H2O) in CO2. The computer algorithm used for isothermal multiphase flash calculationsis based on the minimization of the Gibbs energy along with stability analysis to find the most stable state ofthe system.

Keywords:

water content , PC-SAFT , carbon dioxide