TY - JOUR
T1 - Multiphase equilibria of waxy systems with predictive equations of state and a solid solution model
AU - Nasrifar, Khashayar
AU - Moshfeghian, Mahmood
PY - 2012/1/25
Y1 - 2012/1/25
N2 - A thermodynamic model is developed to predict the vapor-liquid, solid-liquid, solid-vapor and solid-liquid-vapor equilibria of systems containing methane with waxy components. The model takes the advantages of equations of state to describe the vapor and liquid phases. The solid phase is described by Coutinho's activity coefficient model, i.e., the solid phase is assumed to be orthorhombic solid solution. Impact of pressure on the solid phase is included by coupling solid-liquid Clapeyron relationship with Poynting correction factor. While no adjustable parameter is used, the model satisfactorily predicts the phase boundaries of the synthetic and real systems resembling gas condensate mixtures for wide ranges of pressure and temperature.
AB - A thermodynamic model is developed to predict the vapor-liquid, solid-liquid, solid-vapor and solid-liquid-vapor equilibria of systems containing methane with waxy components. The model takes the advantages of equations of state to describe the vapor and liquid phases. The solid phase is described by Coutinho's activity coefficient model, i.e., the solid phase is assumed to be orthorhombic solid solution. Impact of pressure on the solid phase is included by coupling solid-liquid Clapeyron relationship with Poynting correction factor. While no adjustable parameter is used, the model satisfactorily predicts the phase boundaries of the synthetic and real systems resembling gas condensate mixtures for wide ranges of pressure and temperature.
KW - Equation of state
KW - Equilibrium calculations
KW - High pressure
KW - Phase boundary
KW - Wax
UR - http://www.scopus.com/inward/record.url?scp=83655201125&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=83655201125&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2011.10.019
DO - 10.1016/j.fluid.2011.10.019
M3 - Article
AN - SCOPUS:83655201125
SN - 0378-3812
VL - 314
SP - 60
EP - 68
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
ER -