Procedure to determine the phase region of high-pressure, high-temperature binary salt-water mixtures

A decision tree to determine the phase region of high-pressure, high-temperature binary salt-water mixtures was developed. Based on temperature, pressure and feed concentration mixtures, regions either a type I or II salt were identified for selected condition range. The Anderko Pitzer equation state (AP EoS) used calculate equilibrium concentrations respective under high-pressure (P > 220 bar) (T 300 ºC) conditions. EoS adapted thermodynamic properties KCl-H2O Na2SO4-H2O in addition NaCl-H2O. developed able accurately identify indicate transition from one another different concentrations. can be useful determining operating conditions preventing solid deposition processes supercritical water.