The treatment of binary and ternary vapour-liquid equilibrium data on systems with more than one liquid phase

2007 ◽  
Vol 2 (1) ◽  
pp. 19-23 ◽  
Author(s):  
E. F. G. Herington
Keyword(s):  
Liquid Phase ◽  
Liquid Equilibrium ◽  
Equilibrium Data

Isobaric vapour-liquid equilibrium data of the 1,2-dichloroethane-water system at 101.3 kPa

1989 ◽  
Vol 54 (11) ◽  
pp. 2848-2855 ◽  
Author(s):  
Daniel Bobok ◽  
Elemír Kossaczký ◽  
Július Surový
Keyword(s):  
Liquid Phase ◽  
Activity Coefficients ◽  
Water System ◽  
Vapour Phase ◽  
Solubility Data ◽  
Liquid Equilibrium ◽  
Equilibrium Data ◽  
Van Laar Equation

Isobaric vapour-liquid equilibrium data for the 1,2-dichloroethane-water system were calculated on the assumption of ideal behaviour of the vapour phase on using the van Laar equation for activity coefficients of the components in the liquid phase. The parameters of the van Laar equation were calculated from the solubility of 1,2-dichloroethane in water and of water in 1,2-dichloroethane determined experimentally in this work. On using the solubility data, the parameters of the heteroazeotropic point at the pressure of 101.3 kPa were also calculated.

The Effect of Vapour Space Volume on Vapour-Liquid Equilibrium Measured by Stripping with an Inert Gas Stream

1993 ◽  
Vol 58 (9) ◽  
pp. 2069-2078
Author(s):  
Július Surový ◽  
Jana Ovečková ◽  
Elena Graczová
Keyword(s):  
Liquid Phase ◽  
Inert Gas ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Phase Concentration ◽  
Space Size ◽  
Equilibrium Data ◽  
Saturation Method ◽  
Miscible Liquids ◽  
Space Volume

The effect of vapour space size when measuring the vapour-liquide equilibrium by a modified saturation method based on the change in the liquid phase concentration with time is studied in this work. The relation was derived for calculating the correction for the vapour space volume. On using some model solutions of different degree of non-ideality and of different concentrations, the magnitude of this correlation and its influence on the calculated vapour-liquid equilibrium data is studied. In case of systems of completely miscible liquids, it is not necessary, as a rule, to expect a more significant effect of the vapour space size on vapor-liquid equilibrium.

Phase equilibria in the acetaldehyde-diethyl ether-water system

1979 ◽  
Vol 44 (7) ◽  
pp. 1999-2005 ◽  
Author(s):  
Josef Suška
Keyword(s):  
Liquid Phase ◽  
Phase Equilibria ◽  
Diethyl Ether ◽  
Water System ◽  
Liquid Equilibrium ◽  
Isothermal Conditions ◽  
Equilibrium Data

Vapour-liquid and liquid-liquid phase equilibria in the ternary acetaldehyde-diethyl ether-water system were determined at isothermal conditions. Experimental vapour-liquid equilibrium data were correlated by the Renon-Prausnitz equation.

Vapour-phase non-ideality in low-pressure vapour-liquid equilibrium data correlation

1980 ◽  
Vol 45 (11) ◽  
pp. 3057-3062 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Experimental Data ◽  
Phase Composition ◽  
Liquid Phase ◽  
Low Pressure ◽  
Vapour Phase ◽  
Liquid Equilibrium ◽  
Ideal Behavior ◽  
Equilibrium Data ◽  
Vle Data ◽  
Volumetric Behavior

The effect of vapour-phase imperfections and the volumetric behavior of liquid phase on the low-pressure VLE data reduction was investigated. The errors in the vapour-phase composition due to processing experimental data assuming ideal behavior of the vapour phase were evaluated.

Isothermal and isobaric vapour-liquid equilibrium data in the tetrachloromethane-sec-butyl alcohol system

1983 ◽  
Vol 48 (9) ◽  
pp. 2446-2453 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Experimental Data ◽  
Boiling Point ◽  
Butyl Alcohol ◽  
Correlation Equations ◽  
Wilson Equation ◽  
Liquid Equilibrium ◽  
Raoult’S Law ◽  
System A ◽  
Equilibrium Data ◽  
Alcohol System

Isothermal vapour-liquid equilibrium data at 65, 73 and 80 °C and isobaric ones at 101.3 kPa were measured in the tetrachloromethane-sec-butyl alcohol system. A modified circulation still of the Gillespie type was used for the measurements. Under the conditions of measurement, the system exhibits positive deviations from Raoult's law and minimum boiling-point azeotropes. The experimental data were fitted to a number of correlation equations, the most suitable being the Wilson equation.

Vapour-liquid equilibrium in the ternary system cyclohexane-acetic acid-propionic acid

1989 ◽  
Vol 54 (11) ◽  
pp. 2840-2847 ◽  
Author(s):  
Ivona Malijevská ◽  
Alena Maštalková ◽  
Marie Sýsová
Keyword(s):  
Acetic Acid ◽  
Ternary System ◽  
Propionic Acid ◽  
Activity Coefficients ◽  
Error Propagation ◽  
Analytical Techniques ◽  
Liquid Equilibrium ◽  
Consistency Test ◽  
Propagation Law ◽  
Equilibrium Data

Isobaric equilibrium data (P = 101.3 kPa) for the system cyclohexane-acetic acid-propionic acid have been measured by two different analytical techniques. Activity coefficients calculated by simultaneous solving of equations for the chemical and phase equilibria were subjected to a consistency test based on inaccuracies determined from the error propagation law, and were correlated by Wilson’s equation. The activity coefficients measured were compared with those calculated from binary vapour-liquid equilibrium data and with values predicted by the UNIFAC method.

Sign in / Sign up

Export Citation Format

Share Document