TY - JOUR
T1 - Procedure to determine the phase region of high-pressure, high-temperature binary salt-water mixtures
AU - van Wyk, Surika
AU - van der Ham, Aloijsius G.J.
AU - Kersten, Sascha R.A.
N1 - Funding Information:
This work was performed in the cooperative framework of Wetsus, European Centre of Excellence for Sustainable Water Technology ( www.wetsus.nl ). Wetsus is co-funded by the Dutch Ministry of Economic Affairs and Ministry of Infrastructure and Environment , the European Union Regional Development Fund , the Province of Fryslân and the Northern Netherlands Provinces . This work is part of a project that has received funding from the European Union's Horizon 2020 Research and Innovation Programme under the Marie Skłodowska-Curie Grant Agreement No 665874 . The authors would like to thank Oscar Nachtegaal for his contribution to KCl-H 2 O measurements for this work. The authors would also like to thank Benno Knaken and Johan Agterhorst for the continuous maintenance and reparations of the lab-scale set-up.
Funding Information:
This work was performed in the cooperative framework of Wetsus, European Centre of Excellence for Sustainable Water Technology (www.wetsus.nl). Wetsus is co-funded by the Dutch Ministry of Economic Affairs and Ministry of Infrastructure and Environment, the European Union Regional Development Fund, the Province of Frysl?n and the Northern Netherlands Provinces. This work is part of a project that has received funding from the European Union's Horizon 2020 Research and Innovation Programme under the Marie Sk?odowska-Curie Grant Agreement No 665874. The authors would like to thank Oscar Nachtegaal for his contribution to KCl-H2O measurements for this work. The authors would also like to thank Benno Knaken and Johan Agterhorst for the continuous maintenance and reparations of the lab-scale set-up.
Publisher Copyright:
© 2021 The Author(s)
PY - 2022/1/15
Y1 - 2022/1/15
N2 - A decision tree to determine the phase region of high-pressure, high-temperature binary salt-water mixtures was developed. Based on the temperature, pressure and feed concentration of binary salt-water mixtures, the phase regions of either a type I or II salt were identified for a selected condition range. The Anderko and Pitzer equation of state (AP EoS) was used to calculate the equilibrium concentrations of the respective salt-water mixtures under high-pressure (P > 220 bar) and high-temperature (T > 300 ºC) conditions. The EoS was adapted to calculate the thermodynamic properties of KCl-H2O and Na2SO4-H2O mixtures, in addition to the properties of NaCl-H2O. The developed decision tree was able to accurately identify the phase regions and indicate the transition from one phase to another for different feed concentrations. The developed decision tree can be useful in determining operating conditions and preventing solid deposition for processes operating under the supercritical conditions of water.
AB - A decision tree to determine the phase region of high-pressure, high-temperature binary salt-water mixtures was developed. Based on the temperature, pressure and feed concentration of binary salt-water mixtures, the phase regions of either a type I or II salt were identified for a selected condition range. The Anderko and Pitzer equation of state (AP EoS) was used to calculate the equilibrium concentrations of the respective salt-water mixtures under high-pressure (P > 220 bar) and high-temperature (T > 300 ºC) conditions. The EoS was adapted to calculate the thermodynamic properties of KCl-H2O and Na2SO4-H2O mixtures, in addition to the properties of NaCl-H2O. The developed decision tree was able to accurately identify the phase regions and indicate the transition from one phase to another for different feed concentrations. The developed decision tree can be useful in determining operating conditions and preventing solid deposition for processes operating under the supercritical conditions of water.
KW - Anderko and Pitzer equation of state
KW - Decision tree
KW - Phase equilibrium
KW - Supercritical salt-water mixtures
KW - Thermodynamic modelling
KW - UT-Hybrid-D
UR - http://www.scopus.com/inward/record.url?scp=85117702384&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2021.113275
DO - 10.1016/j.fluid.2021.113275
M3 - Article
AN - SCOPUS:85117702384
SN - 0378-3812
VL - 552
JO - Fluid phase equilibria
JF - Fluid phase equilibria
M1 - 113275
ER -