Azeotropic
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Desenvolvimento computacional de novas metodologias de calculos para propriedades termodinamicas
The objective of this work is the FORTRAN implementation of modern techniques, such as: the interval analysis, simulation and optimization Monte Carlo and neural network. These techniques were used for the computational development of new ca1culation methodologies for the prediction of thermodynamic properties, for determination of azeotropy points of multic
Publicado em: 2003
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14. Desenvolvimento de um programa para geração de mapas de curvas residuais e aplicação a processos de destilação azeotropica e extrativa
Despite the development of new separation processes, the predominant unit operation used in chemical industries is, still, distillation, especially for large-scale separation of non-ideal mixtures. Many papers have dedicated special attention to the study of azeotropic mixtures, looking for the development of design and synthesis tools. Residue curve maps pl
Publicado em: 2002
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15. Estudo de processos de produção de etanol anidro através da destilação extrativa salina com recuperação do agente de separação
One technique has been used largely in production of anhydrous ethanol is azeotropic distillation with benzene, which carcinogenic properties are well-known. An alternative process, ecologically viable, is extractive distillation by salt effect. The use of a soluble salt in dehydration of ethanol allows a reduction in energy requirement, besides producing en
Publicado em: 1999
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16. 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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17. Desacidificação de oleo de milho com etanol em coluna de discos rotativos (RDC)
Deacidification of com oil with ethanol by a continuous process was conduded in a perforated rotating-disc-contador (RDC). Since the phosphatides are insoluble in ethanol, different pre-treatments were performed such as degumming and bleahing to reduce the phosphorus content. Water degumming of crude com oil was more efficient than acid degumming with citric
Publicado em: 1996
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18. 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
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19. Minimização de emissão de poluentes na sintese de resinas fenolicas
This work describes the optirnization of a novolac resm synthesis catried out m a batch reactor. Basically, the main purpose of this work is to reduce the concentration of phenol in the efluent, because this is the largest problem in the process, since in the industry the concentration of phenol in the efluent is between 20.000 and 50.000 ppm, wich is a high
Publicado em: 1995