2023 Volume 49 Issue 3 Pages 51-55
The high-pressure vapor–liquid equilibria of a CO2–ethanol–water system was measured using a flow-type device at temperatures of 313–353 K and a pressure of 8 MPa. With the obtained vapor–liquid equilibria data and the data of a previous report (Sato et al., 2019), the applicability of a correlation method using the van der Waals one fluid (vdW1) mixing rule and Wong–Sandler (WS) mixing rule in the Peng–Robinson equation of state was confirmed. From an estimation made using the temperature-dependent approximation formula of fitting parameters determined by the correlation, the applicability of both the vdW1 mixing rule and WS mixing rule to CO2–ethanol–water systems was suggested.
