Azeotrope
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. ETHANOL DEHYDRATION IN PACKED DISTILLATION COLUMN USING GLYCEROL AS ENTRAINER: EXPERIMENTS AND HETP EVALUATION
Abstract The ethanol-water separation is very important because ethanol is widely applied in the chemical industry and its use as a fuel can reduce the pollution emitted to the air. However, anhydrous ethanol production using conventional distillation is impossible, at atmospheric pressure, due to the presence of an azeotrope. In the present work, experiment
Braz. J. Chem. Eng.. Publicado em: 2016-06
-
2. 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
-
3. Simulação do processo de adsorção psa para separação da mistura etanol-água / Simulation of the adsorption process psa for separation of ethanol-water mixtures
One of the problems with ethanol production is the high energy cost which is associated with the separation of ethanol due to of excess water and the existence of an azeotrope in the mixture ethanol-water, by conventional distillation the mixture can be separated up to 95% weight. Currently, there is great interest in the development of technological process
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/07/2011
-
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
-
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
-
6. Modelo de ordem reduzida de uma coluna de destilação extrativa salina em estado estacionario
One of the major difficulties at mathematical models of staged separation systems is the large dimensionlity of the process models. These models introduce significant computational effort especially in cases involving repetitive simulations such as optimization and dynamic simulation for control systems The need of the efficient process models which require
Publicado em: 1996
-
7. Recuperação de energia na destilação do sistema etanol-agua
Energy recovery is now days one the most important tasks that chemical engineeries face, specially when distillation is involved. Between the energy recovery techniques to be applied to distillation columns, vapour recompression has been pointed out as one of the most promissing. The application of this technique has been discussed in the literature and reco
Publicado em: 1983