CPA 상태방정식에 의한 회합성 유체의 PVT 관계

PYT Relations of Associating Fluids using the Cubic-Plus-Association EoS

For modeling an equation of state suitable for describing associating fluids, we combined the cubic equation of state (Peng-Robinson)and an association term of SAFT. The resulting EoS(Cubic-Plus-Association)is not cubic with respect to volume and contains five pure compound parameters.Excellent correlations of both vapour pressures and saturated liquid volumes were obtained for n-alcohols and secondary alcohols, We considered a method for reducing the number of adjustable pure compound parameters from five to three, and the resulting 3-parameters EoS relation maintained the good correlation of vapour pressures and saturated liquid volumes.