Experimental determination and thermodynamic modeling of equilibrium phase data of binaries and ternary mixtures containing acetone, water and cumene / Determinação experimental e modelagem termodinamica de dados de equilíbrio de fases de misturas binarias e ternaria contendo acetona, agua e cumeno

AUTOR(ES)

Luciana Yumi Akisawa Silva

DATA DE PUBLICAÇÃO

2007

RESUMO

On projecting separation processes it is essential the knowledge of the behavior of the phases in equilibrium. The present work involved the study of the phase equilibrium of mixtures containing acetone, water and cumene, which are very important in the phenol industry. The components water and cumene are partially miscible, and in the distillation of the mixture of acetone, water and cumene occurs the simultaneous formation of three phases, two liquids and one vapor. In such a way this it is important the determination of only one set of parameters for GE models that can represent appropriately the vapor-liquid and liquid-liquid equilibrium. It has been determined vapor-liquid equilibrium data of acetone + water, acetone + cumene and acetone + water -"o cumene systems and liquid-liquid equilibrium data of water + cumene system at 760 mmHg. The Maximum Likelihood Principle was used for the estimation of the interaction parameters for the NRTL and UNIQUAC models. The parameters obtained in this work were compared with the parameters found by Mafra (2005). who realized the reduction of ternary liquid-liquid equilibrium data at 50°C. and it has been analyzed which set of parameters gives the best representation of the vapor-liquid and the liquid-liquid equilibrium simultaneously. The results have shown that the NRTL model with parameters determined by binary data represents properly the vapor-liquid and liquid-liquid equilibrium of binary and ternary systems containing acetone, water and cumene

ASSUNTO(S)

vapor-liquid equilibrium equilibrio liquido-liquido ge models energia livre de liquid-liquid equilibrium acetone equilibrio liquido-vapor termodinamica cumene gibbs

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