High Pressure Vapor-Liquid Equilibrium Data of a Binary Mixture of Chloroform and Acetone

pressure

101.325

option

isobaric VLE diagram

equilibrium curve

relative volatility

K-value

fugacity coefficient

Consider a binary mixture composed of chloroform and acetone. This mixture exhibits a negative azeotrope. This Demonstration computes and plots the isobaric vapor-liquid equilibrium (VLE) diagram, the equilibrium curve, the relative volatility, the

K

-value, and the gas phase fugacity coefficients for user-specified values of the pressure. This Demonstration takes into account the deviation from ideal behavior in the gas phase by including gas phase fugacity coefficients. Thus high-pressure VLE data can be obtained. This Demonstration does not allow for the Poynting Factor Correction (or POY).

VLE data is computed using the following formula (the gamma-phi equation):

y

i

P

ϕ

i

=

g

i

x

i

sat

P

i

where

y

i

and

x

i

are the vapor and liquid mole fractions of component

i

,

P

is the total pressure,

sat

P

i

is the saturation vapor pressure of component

i

,

ϕ

i

and

g

i

are the vapor-phase fugacity coefficient and the liquid-phase activity coefficient determined using the Soave–Redlich–Kwong equation of state and the Wilson model, respectively.