Abstract
The experimental temperature dependence of the vapour pressures of isobutyl acetate, acetic acid and methyl ethyl ketone were determined, and isobaric vapour-liquid equilibrium data of binary systems of methyl ethyl ketone + isobutyl acetate and methyl ethyl ketone + acetic acid were obtained. The experimental data were processed using the Antoine and Riedel equations and the NRTL and Wilson local composition equations, respectively. Comparison of the experimental and calculated data confirmed the adequacy of the vapour-liquid equilibrium mathematical simulation.
Highlights
Reliable experimental data on the vapour–liquid equilibrium (VLE) of binary systems are necessary to obtain adequate mathematical parameters, which enable one to investigate the phase equilibrium and estimate optimal operation parameters of single distillation columns and the entire flow sheet.The ternary system of isobutyl acetate (IBA) + acetic acid (AA) + methyl ethyl ketone (MEK) is notably interesting, because it includes the binary IBA+AA system with two binary azeotropes [1, 2]
The IBA+AA+MEK ternary system was selected as an object of phase-diagram study
This value is in the permissible range ±0.02; the experimental VLE data for the MEK+AA system are thermodynamically consistent
Summary
VAPOUR-LIQUID EQUILIBRIUM IN SYSTEMS WITH ISOBUTYL ACETATE, ACETIC ACID AND METHYL ETHYL KETONE. The experimental temperature dependence of the vapour pressures of isobutyl acetate, acetic acid and methyl ethyl ketone were determined, and isobaric vapour–liquid equilibrium data of binary systems of methyl ethyl ketone + isobutyl acetate and methyl ethyl ketone + acetic acid were obtained. Comparison of the experimental and calculated data confirmed the adequacy of the vapour–liquid equilibrium mathematical simulation. Ключевые слова: vapour–liquid equilibrium, vapour pressure, mathematical simulation, isobutyl acetate, acetic acid, methyl ethyl ketone. ПАРОЖИДКОСТНОЕ РАВНОВЕСИЕ В СИСТЕМАХ, СОДЕРЖАЩИХ ИЗОБУТИЛАЦЕТАТ, УКСУСНУЮ КИСЛОТУ, МЕТИЛЭТИЛКЕТОН. В натурном эксперименте определены зависимости упругости паров изобутилацетата, уксусной кислоты, метилэтилкетона, равновесные температуры кипения и составы паровой фазы в системах изобутилацетат – метилэтилкетон и уксусная кислота – метилэтилкетон при атмосферном давлении.
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