Differential Reactor
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Pyrolysis of the Caupi Bean Pod (Vigna unguiculata): Characterization of Biomass and Bio-Oil
The use of agricultural residues for the production of bio-oil is an important alternative to the use of fossil fuels. In this study, the Caupi bean pod (Vigna unguiculata) was characterized and used as biomass in the production of bio-oil. This biomass was evaluated in terms of physicochemical, morphological (scanning electron microscopy (SEM)), and thermal
J. Braz. Chem. Soc.. Publicado em: 2020-06
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2. A METHODOLOGY TO OBTAIN ANALYTICAL MODELS THAT REDUCE THE COMPUTATIONAL COMPLEXITY FACED IN REAL TIME IMPLEMENTATION OF NMPC CONTROLLERS
Abstract Model Predictive Control, MPC and NMPC, and real-time optimization, RTO and D-RTO, are known to help plant operability through the mitigation of impacts caused by external disturbances. However, the usage of these tools in industry requires overcoming some challenges, for instance: accurate models of the process, particularly in regard to nonlineari
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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3. DESENVOLVIMENTO DE METODOLOGIAS ELETROQUÍMICAS PARA MONITORAMENTO AMBIENTAL DA RIFAMPICINA E SUA ELETRODEGRADAÇÃO PELA GERAÇÃO DE AGENTES OXIDANTES IN SITU. / DEVELOPMENT OF METHODOLOGIES FOR ELECTROCHEMICAL ENVIRONMENTAL MONITORING OF YOUR E RIFAMPICIN ELETRODEGRADAÇÃO GENERATION BY OXIDIZING AGENTS IN SITU.
The drugs are considered pollutant emergent, a time that its presence in aquatic environments is each bigger time. This research has as objective to develop electrochemical methodologies that allow to monitor and to degrade the rifampicin in water of public supplying. In the stage of monitor a voltammetric method was developed using a biosensor of chitosan f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/10/2010
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4. Estudo da copolimerização em mini emulsão de metacrilato de metila/metacrilato de etila / Study of methyl methacrylate/ethyl methacrylate in mini emulsion copolimerization
Reduction of volatile organic compounds (VOC) usage is a constant environmental demand. Polymeric aqueous emulsion of low surfactant contends produced from direct miniemulsion synthesis are used with advantages to replace organic solvents media as well as aqueous emulsions of high surfactant concentration. Water as continuous phase and organic monomers with
Publicado em: 2008
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5. Investigation of hyperfine interactions in pure silicon and NTD silicon by means of perturbed angular γ-γ correlation spectroscopy / Investigação de interações hiperfinas em silício puro e silício NTD pela técnica de correlação angular gama-gama perturbada
In the present work, a microscopic investigation of hyperfine interactions in single crystal silicon samples was carried out by means of Perturbed Angular γ-γ Correlation technique (PAC), which is based in hyperfine interactions. In order to achieve these measurements, it was used 111In ->111Cd radioactive probe nuclei, which decay through the we
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/02/2007
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6. A novel hybrid optimization algorithm for diferential-algebraic control problems
Dynamic optimization problems can be numerically solved by direct, indirect and Hamilton-Jacobi-Bellman methods. In this paper, the differential-algebraic approach is incorporated into a hybrid method, extending the concepts of structural and differential indexes, consistent initialization analysis, index reduction and dynamic degrees of freedom to the optim
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09
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7. Simulação e otimização de reator de formaldeido, processo prata, usando tecnicas de inteligencia artificial / Simulation and optimization of silver formaldehyde reactor, using artificial intelligence techniques
The focus of this Thesis is the simulation and optimization of a silver catalyzed fixed-bed reactor for the oxidation of methanol to formaldehyde, using artificial intelligence techniques (genetic algorithm and artificial neural networks). Formaldehyde is a key chemical intermediate used mainly in the production of adhesives and resins for several market seg
Publicado em: 2007
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8. ESTUDO DE MODELOS DE MISTURA ESTOCÁSTICOS PARA A COMBUSTÃO EM ESCOAMENTOSTURBULENTOS / STUDY OF STOCHASTIC MIXING MODELS FOR COMBUSTION IN TURBULENT FLOWS
O presente trabalho tem como finalidade avaliar os diferentes modelos de mistura para o cálculo da combustão de reagentes pré- misturados utilizando a abordagem de Reator Parcialmente Misturado (PaSR). Os modelos de mistura considerados neste trabalho foram os modelos IEM estendido, Langevin e Langevin estendido. Investiga-se aqui o grau de mistura previs
Publicado em: 2007
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9. Estudo da ReaÃÃo de Desidro-aromatizaÃÃo nÃo oxidativa do Metano em Reator de Leito Fixo Diferencial com catalisador Ru- Mo/HZSM-5
Chemical routes suitable for the activation of methane to produce valuable products are limited and its achievement consists in a challenge to the chemistry of the natural gas conversion. Although remarkable progresses have been achieved on the methane dehydroaromatization (MDA) reaction, low conversion caused by severe thermodynamic limitations, coke format
Publicado em: 2007
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10. Modelagem e validaÃÃo do processo contÃnuo de produÃÃo depoliÃis em reator de leito gotejante
In the present work a trickle-bed reactor was employed in order to perform a saccharide hydrogenation process to produce polyols in the presence of a nickel catalyst supported on activated carbon. The catalyst was prepared, characterized and tested. The reactor was assembled charged with the catalyst and the proposed reactions performed. A model was then pro
Publicado em: 2006
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11. Modeling and simulation of an industrial autoclave reactor for the production of low-density polyethylene (PEBD) / Modelagem e simulação de um reator autoclave para a produção de polietileno de baixa densidade (PEBD)
High-pressure polymerization in autoclave reactors is one of the most currently technologies used for production of polyolefins, particularly polyethylene. Pressures until 3000 atm and temperatures covering the range from 150 to 300 DEGREES C are usually employed in this system. In the present work high-pressure ethylene polymerization process to produce low
Publicado em: 2005
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12. Modelagem e analise de digestores Kraft descontinuo
Global1y, the Kraft pulping process is beginning to get use of the benefits of the recent developments in the modeling area and process control. Advanced techniques of simulation and control offer tools that allow the analysis and efficient design of multivariable non-linear process, involving the optimization and the advanced control of the process. The pul
Publicado em: 2004