TY - JOUR
T1 - Phase equilibria modeling of methanol-containing systems with the CPA and sPC-SAFT equations of state
AU - Tybjerg, Peter Chr. V.
AU - Kontogeorgis, Georgios
AU - Michelsen, Michael Locht
AU - Stenby, Erling Halfdan
PY - 2010
Y1 - 2010
N2 - Proper representation at various conditions of phase equilibria of methanol-containing mixtures (with hydrocarbons, water, etc.) is Important for oil flow assurance purposes
In this work two association equations of state. CPA and sPC-SAFT, are applied to methanol-containing mixtures The purpose of this work is to investigate which association schemes (eg. two-site, three-site) should be used for methanol which will result In Successful representation of methanol-water-hydrocarbon phase equilibria Parameters from the literature as well as newly estimated parameters based on vapor pressure. liquid density, enthalpy of vaporization and compressibility factor data at e used Methanol-alkane vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) data. water-methanol VLE as well as water-methanol-hydrocarbon LLE are considered.
It is concluded that the two association equations of state perform overall similarly, with the two-site association scheme being a better choice than the three-site scheme, for phase equilibrium calculations Use of the additional properties (enthalpy of vaporization and compressibility factor) in the parameter estimation has a larger effect on the performance of sPC-SAFT compared to CPA (C) 2009 Elsevier B.V. All rights reserved
AB - Proper representation at various conditions of phase equilibria of methanol-containing mixtures (with hydrocarbons, water, etc.) is Important for oil flow assurance purposes
In this work two association equations of state. CPA and sPC-SAFT, are applied to methanol-containing mixtures The purpose of this work is to investigate which association schemes (eg. two-site, three-site) should be used for methanol which will result In Successful representation of methanol-water-hydrocarbon phase equilibria Parameters from the literature as well as newly estimated parameters based on vapor pressure. liquid density, enthalpy of vaporization and compressibility factor data at e used Methanol-alkane vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) data. water-methanol VLE as well as water-methanol-hydrocarbon LLE are considered.
It is concluded that the two association equations of state perform overall similarly, with the two-site association scheme being a better choice than the three-site scheme, for phase equilibrium calculations Use of the additional properties (enthalpy of vaporization and compressibility factor) in the parameter estimation has a larger effect on the performance of sPC-SAFT compared to CPA (C) 2009 Elsevier B.V. All rights reserved
U2 - 10.1016/j.fluid.2009.10.021
DO - 10.1016/j.fluid.2009.10.021
M3 - Journal article
SN - 0378-3812
VL - 288
SP - 128
EP - 138
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1-2
ER -