Isobaric Vapor–Liquid Equilibrium for the Binary System of Cumene + Acetophenone at 101.3, 30.0, and 10.0 kPa

Abstract

The isobaric binary vapor–liquid equilibrium (VLE) data for the mixture of cumene and acetophenone were studied at 101.3, 30.0, and 10.0 kPa in a modified Rose equilibrium still. This system exhibited no azeotropic behavior at the studied pressures. The consistency of the VLE data was verified by both the Fredenslund test and Redlich–Kister area test. Meanwhile, the experimental data were correlated by the nonrandom two-liquid, universal quasichemical, and Wilson models. The corresponding binary interaction parameters for the three models, which could contribute to the simulation and design for the separation process, were obtained using a maximum likelihood objective function. All three models showed good agreement with the experimental data.

Measurement and Correlation of Vapor–Liquid Equilibrium Data of the Toluene, o-Chlorotoluene, and p-Chlorotoluene System at 101.3 kPa

“…The x i and y i of the samples were calculated by the experimental analysis, and the γ i of the vapor and liquid phases was calculated by eq . The calculated activity coefficient γ i is shown in Figure …”

“…The calculated activity coefficient γ i is shown in Figure 5. 30 It can be seen from Figure 5 that when the system contains ochlorotoluene, there is a significant deviation between the experimental and calculated values of the total activity coefficient. The polarity of o-chlorotoluene is greater than that of toluene and p-chlorotoluene.…”

Separation of Ternary System 1,2-Ethanediol + 1,3-Propanediol + 1,4-Butanediol by Liquid-Only Transfer Dividing Wall Column

“…A modified Rose equilibrium still, depicted in Figure 3, was employed to determine VLE data in this study. Our previous work [26,27] demonstrated the reliability of the apparatus. The apparatus facilitates the establishment of equilibrium by continuous recirculation of both the vapor and liquid phases.…”