2015•Theoretical Foundations of Chemical EngineeringRequires access

Vapor-liquid-liquid phase equilibrium in four-component benzene-heptane-N-methylpyrrolidone-sulfolane system

И. В. Иванов, В. А. Лотхов, A. Yu. Tikhonov, Н. Н. Кулов

Abstract

The liquid-vapor phase equilibrium in four-component benzene-heptane-N-methylpyrrolidone-sulfolane system has been experimentally studied, including in the areas of lamination of the liquid phase. The modeling of liquid-liquid-vapor phase equilibrium in the studied system has been performed using a calculation program compiled based on the nonrandom two-liquid (NRTL) equation. A comparative assessment of the effectiveness of N-methylpyrrolidone, sulfolane, and their mixture as separating agents in the of extractive distillation of benzene-heptane binary mixture has been performed.

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Available abstract

Key concepts: Sulfolane, Non-random two-liquid model, Heptane, Benzene, Component (thermodynamics), Phase (matter), Chemistry, Distillation