Key words: water, supercritical propane/butane mixture, phase equilibrium, solubility, thermodynamic model, Peng—Robinson equation of state
The results of an experimental study of the phase equilibrium of the «water—propane/butane» system carried out in the temperature range of 403—443 K and the pressure range of 5.28—20.66 MPa using a high-pressure optical cell are presented. The V type of phase behavior is established. The solubility of water in a supercritical propane-butane mixture under the above mentioned thermodynamic conditions is estimated based on the characteristics of the steam branch of the phase equilibrium of the «water—propane/butane» system and described using the Peng—Robinson equation of state in combination with the Mukhopadhyay and Rao mixing rule was made.
doi:10.34984/SCFTP.2022.17.1.005