Vapor-liquid equilibriums of the ternary system acetone-chloroform-2,3-dimethylbutane

Abstract

Vapor-liquid equilibrium data at 760 mm. of Hg were determined in a modified Colburn still for the ternary system acetone-chloroform-2,3-dimethylbutane. This system is comprised of two binary minimum-boiling homogeneous azeotropes and one maximum-boiling homogeneous azeotrope. The data were correlated by means of the two-parameter Wilson equation.Knowledge of multicomponent vapor-liquid equilibrium data is important in the design of distillation equipment. The purpose of this study was to determine the vapor-liquid equilibria for the non-ideal ternary system acetone-chloroform-2,3-dimethylbutane at 760 mm. of Hg, and to compare the experimental results with ternary data predicted from available binary data, using a suitable correlating equation. EXPERIMENTAL Materials. All three chemicals as received had a guaranteed purity of at least 99 mole %. No further purification was considered necessary. The essential properties of the materials are shown in Table I.Procedure. The equilibrium data were obtained in a modified Colburn still (7), as described by Hollenshead and Van Winkle (4) and others (3, 11). The modified Colburn still used here (Figure 1) was the same as that described by Hollenshead and Van Winkle, with certain changes in the arrangement of the heating coils. The heating

Vapor-liquid equilibriums of the quinary system hexane, methylcyclopentane, cyclohexane, benzene, and toulene

“…A similar still, but with slightly different heating coil arrangement and double capacity, was used in the determination of the vapor-liquid equilibrium data. This was the still described by Matocha (9) and Garrett (3,4). Better flow control was obtained, which allowed more rapid attainment of equilibrium.…”

Vapor-liquid equilibriums: 2,3-dimethylbutane-methanol and 2,3-dimethylbutane-methanol-chloroform systems

“…To compare the experimental results of the 2,3-dimethylbutane-methanol-chloroform ternary with results based on ternary activity coefficients predicted by the Wilson equation, experimental vapor-liquid equilibrium data were required for the following binary systems: 2,3-dimethylbutane-chloroform (2,6), methanol-chloroform (7), and 2,3-dimethylbutane-methanol. Liquid mole fraction 2,3-Dimethylbutane-Methanol Binary System.…”

“…Other experimental data include: vapor pressures ; rectilinear diameters in the critical region for isopropylamine, w-heptane, and benzene ; boiling points ; 1 Deceased. 2 Present address, Department of Chemistry and Chemical Engineering, University of Saskatchewan, Saskatoon, Saskatchewan, Canada. indices of refraction; and some information on the stability of the compounds at elevated temperature and pressure. Calculated values of critical compressibility, "acentric factor," and "critical parameter" are presented to expedite the estimation of thermodynamic properties of these compounds.…”

“…Procedure. The equilibrium still used to obtain vaporliquid equilibrium data is the same modified Colburn still described by Hanson and Van Winkle (3) and used by Garrett and Van Winkle (2). This still has three separate heating units for the equilibrium chamber instead of one, to allow for a closer approach to adiabatic conditions.…”

Activity coefficients for binary and multicomponent liquid mixtures from unary property model for Wilson parameters

“…Liquid phase activity coef- (Nagata, 1962) Acetone( l)-chloroform(2)-dirnethylbutane(3) (Garrett and van Winkle, 1969) Water( l)-n-propanol(2)-n-butanol(3) (Dawe et al, 1973) The vapor phase fugacity coefficients were calculated by using the virial equation of state truncated after the second term. The self-and cross-viral coefficients were computed, where necessary, by the Pitzer and Curl (Pitzer, 1955(Pitzer, ,1957 method.…”