Azeotropes
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. THERMODYNAMIC TOPOLOGICAL ANALYSIS OF EXTRACTIVE DISTILLATION OF MAXIMUM BOILING AZEOTROPES
Abstract This paper provides a feasibility study of azeotropic mixture separation based on a topological analysis combining thermodynamic knowledge of residue curve maps, univolatility and unidistribution curves, and extractive profiles. Thermodynamic topological features related to process operations for typical ternary diagram classes 1.0-2 are, for the fi
Braz. J. Chem. Eng.. Publicado em: 2015-12
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2. INFLUENCE OF FUSEL OIL COMPONENTS ON THE DISTILLATION OF HYDROUS ETHANOL FUEL (HEF) IN A BENCH COLUMN
AbstractThe components of fusel oil form azeotropes with water, resulting in challenges in obtaining hydrous ethanol fuel (HEF) and increasing investment and operating costs. The aim of this study was to evaluate how the presence of fusel oil affected HEF distillation. Mixtures of ethanol (6.0 to 6.5 % w/w) and water (93.0 to 94 % w/w) containing different c
Braz. J. Chem. Eng.. Publicado em: 2015-06
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3. Development of a robust algorithm to compute reactive azeotropes
In this paper, a novel approach for establishing the route for process intensification through the application of two developed softwares to characterize reactive mixtures is presented. A robust algorithm was developed to build up reactive phase diagrams and to predict the existence and the location of reactive azeotropes. The proposed algorithm does not dep
Brazilian Journal of Chemical Engineering. Publicado em: 2006-09
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4. Calculos de estabilidade e divisão de fases por meio de redes neurais artificiais / Phase splitting and stability calculations by means of artificial neural networks
Process simulation is a basic component of different Process Engineering activities such as On-line Optimization, Model Predictive Control, Identification, etc. The calculation of Phase Equilibrium appears as a fundamental task in any simulation of a separation process. However, the high computational time due to the iterative nature of this calculation make
Publicado em: 2006
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5. Desenvolvimento de modelagens de não equilibrio para caracterização e aplicação em simulação de colunas de destilação complexas / Development of nonequilibrium models for characterization and application in simulation of complex distillation columns
Distillation is, certainly, the most applied process in the separation of liquid mixtures. Although this is a very known unit operation, still nowadays some difficulties persist in the proposal of appropriate distillation schemes. Thus, the objective of this work was to apply more realistic models in the characterization of mixtures and in the simulation of
Publicado em: 2006
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6. Separation process of complex mistures / Projeto de processos de separação de sistemas complexos
The separation process of homogeneous and non ideal mixtures is a common problem in chemical industries. The complex mixture separations may happen at low pressure to prevent thermal degradation or using reactive distillation to eliminate existing azeotropes and/or in order to increase the rei ative volatility of the components to be separated. Reactive dist
Publicado em: 2005
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7. Desenvolvimento de tecnicas para montagem de um sistema especialista aplicado a engenharia de separações
A síntese otimizada de processos é uma preocupação constante do engenheiro químico. Este sempre deve ter disponível o maior número de informações possível para que a sua tomada de decisão seja a mais correta do ponto de vista econômico, ambiental e de obtenção dos produtos desejados. Neste trabalho de tese, enfoca-se a síntese de processos de
Publicado em: 2001
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8. Sintese e modelagem do processo de destilação azeotropica
This work represents a contribution to the synthesis of azeotropic distillation process, that is used to the separation of non-idealliquid mixtures, with the modelling of Steady-State Three-Phase Azeotropic Distillation Column. The following developments were carried out in this thesis: . Modelling and Simulation of Three-Phase Flash: development of the mode
Publicado em: 1998
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9. Caracterização termodinamica de sistemas ternarios para escolha de processos de separação
The objective of this work is to develop a methodology for studing the vapor-(liquid)-liquid phase behaviour of ternary systems and for rapidly determining the partial miscibility presence by using the commercial simulator PROII. The methodology uses flash simulation to do liquid-(liquid)-vapor equilibrium calculations simulation results are used to generate
Publicado em: 1995