Multicomponent Distillation
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. ENERGY AND EXERGETIC EVALUATION OF THE MULTICOMPONENT SEPARATION OF PETROCHEMICAL NAPHTHA IN FALLING FILM DISTILLATION COLUMNS
Abstract Multicomponent separation of synthetic petrochemical naphtha (hexane, cyclohexane, toluene and xylene) was carried out in a falling film distillation sequence with heat supply using a vapor chamber (thermosyphon). Tests were carried out by varying feed flow rate and temperatures of the feed and the vapor chamber in two ways of heat supply: isotherma
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. PERFORMANCE INDICES TO DESIGN A MULTICOMPONENT BATCH DISTILLATION COLUMN USING A SHORTCUT METHOD
AbstractIn this paper, three quality or performance indices (Luyben's capacity factor, total annual costs, and annual profit) were applied for the design of a batch distillation column working at variable reflux. This work used the Fenske-Underwood-Gilliland short-cut method to solve a problem of four components (benzene, toluene, ethyl-benzene, and ortho-xy
Braz. J. Chem. Eng.. Publicado em: 2015-06
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3. Simple multicomponent batch distillation procedure with a variable reflux policy
This paper describes a shortcut procedure for batch distillation simulation with a variable reflux policy. The procedure starts from a shortcut method developed by Sundaram and Evans in 1993 and uses an iterative cycle to calculate the reflux ratio at each moment. The functional relationship between the concentrations at the bottom and the dome is evaluated
Braz. J. Chem. Eng.. Publicado em: 2014-06
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4. Simulação dinâmica do processo de destilação de bioetanol em simulador baseado em equações (EMSO)
A destilação de misturas hidroalcoólicas que surgem no processo de produção de etanol por rota fermentativa tem sido bastante estudada. Contudo, três aspectos têm sido frequentemente relevados: a variabilidade inerente à fermentação, principalmente em ambiente industrial; a influência sobre a alimentação das colunas causada pela mistura de vinho
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/07/2012
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5. Desenvolvimento de sensor virtual empregando redes neurais para medição da composição em uma coluna de destilação. / Soft sensor development using neural networks for inferential composition in a distillation column.
Soft sensors for composition inference models (that are responsible for the quality) of distillation column products, correspond to virtual instruments implemented in software. This software is able to estimate, in real time, the composition of the output products of the column, based on information such as temperature and pressure on several points of the c
Publicado em: 2005
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6. Liquid-liquid equilibrium in systems including aromatic hydrocarbons, aliphatic and sulfolane / Equilibrio liquido-liquido em sistemas contendo hidrocarbonetos aromaticos, alifaticos e sulfolano
An important stage within the processes in the petrochemical industry uses the solvent sulfolane in the recovery of high-purity aromatic hydrocarbons. These aromatic compounds are separated from the aliphatic hydrocarbons through solvent extraction, since distillation is not suitable. Experimental data of the multicomponent liquid-liquid equilibrium are esse
Publicado em: 2005
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7. Computational simulation of deodorization and deacidification of vegetable oils. / Simulação computacional de processos de desodorização e desacidificação de oleos vegetais.
This work was developed in order to study through simulation, the processes of deacidification by steam refining and deodorization, present in the vegetable oil industry. The modeling was developed for batch and continuous processes in steady-state and dynamic regime. To describe mass and energy balances, and equilibrium relationships, it was necessary to us
Publicado em: 2005
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8. Nonlinear dynamic modeling of multicomponent batch distillation: a case study
The aim of this work is to compare several of the commercial dynamic models for batch distillation available worldwide. In this context, BATCHFRAC™, CHEMCAD™ BATCH, and HYSYS.Plant® software performances are compared to experimental data. The software can be used as soft sensors, playing the roll of ad-hoc observers or estimators for control objectives.
Brazilian Journal of Chemical Engineering. Publicado em: 2002-07
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9. Experimental results for the extraction of essential oil from Lippia sidoides cham. using pressurized carbon dioxide
The odoriferous species Lippia sidoides Cham. is abundant in the Brazilian Northeast. Its essential oil possesses antiseptic activity due to the presence of thymol. In this work, thermodynamic and kinetic data were experimentally determined for the CO2 + L. sidoides system. Solubility was determined using the dynamic method at pressures of 66.7 and 78.5 bar
Brazilian Journal of Chemical Engineering. Publicado em: 2002-04
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10. 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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11. Thermodynamic analysis of multicomponent distillation columns: identifying optimal feed conditions
A new methodology for the optimisation of feed conditions as well as the calculation of minimum reflux ratio of distillation columns is presented. The reversible profile approach used for saturated liquid feeds is extended to consider other feed conditions. For flashed feed, the liquid fraction of the feed stream is used to compute the column pinch condition
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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12. 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