Distillation Curve
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. EVALUATION OF DISTILLATION CURVES FOR BIO-OIL OBTAINED FROM THERMAL CRACKING OF WASTE COOKING OIL
ABSTRACT Bio-oil obtained from thermal cracking of waste cooking oil (WCO) is a complex mixture of different chemical compounds and, like crude oil, it is composed mainly of hydrocarbons. The large number of compounds in bio-oil leads to complex and expensive methods for its properties determination. In this study, the distillation curves were constructed fo
Braz. J. Chem. Eng.. Publicado em: 15/07/2019
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2. Potassium adsorption in soil cultivated with sugarcane
ABSTRACT Vinasse is a byproduct of the process of distillation of sugarcane juice for the manufacture of sugar and alcohol. Because it is rich in nutrients, mainly potassium (K), is used as fertilizer and applied via fertigation, without concerning for the fate of this compound in the soil. Thus, the objective of the study was to evaluate the interactions of
An. Acad. Bras. Ciênc.. Publicado em: 16/10/2017
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3. CONCEPTUAL DESIGN OF NON-IDEAL MIXTURE SEPARATION WITH LIGHT ENTRAINERS
Abstract A method is proposed to study the separation of minimum-, maximum-boiling azeotropic, and low volatility mixtures with a light entrainer, to investigate feasible regions of the key operating parameters reboil ratio (S) and entrainer - feed flowrate ratio (FE/F) for continuous processes. The thermodynamic topological predictions are carried out for 1
Braz. J. Chem. Eng.. Publicado em: 2016-12
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4. 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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5. Utilização de novas metodologias experimentais para desenvolvimento de uma pré-ASTM para extensão da curva PEV de petróleos / New experimental methodologics for developing a pre-ASTM for extending the petroleum true boiling point curve
Em 2008 a Petrobras confirmou a descoberta de óleo leve na camada sub-sal. São reservas com petróleo considerado de média a alta qualidade, segundo a escala API. Neste contesto da condição do petróleo nacional tem-se como objetivo geral desta de tese de doutorado determinar experimentalmente as curvas de destilação de frações pesadas de cinco petr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/10/2011
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6. Busca heurística e inferência de parâmetros cinéticos de reações de hidrotratamento de óleo diesel a partir de dados experimentais escassos
Currently, the amount of contaminants (such as sulfur, nitrogen and aromatics) in diesel oil is strictly controlled, due to their impact on pollutant emissions. The most important process used to meet fuel specifications regarding contaminants is the catalytic hydrogenation, specifically hydrotreatment (HDT). Optimization of the HDT process can benefit from
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2011
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7. Utilização de prototipo nacional de destilador molecular para caracterização de frações pesadas de petroleo / Use of national molecular distiller prototype for characterization of heavy oil fractions
The characterization through TBP (True Boiling Point) curve is one of the most common experimental techniques for determination of petroleum properties. This curve defines the yield of petroleum products as function of their true boiling points, supplying important information on decisions of refinery process control and on the quality of the produced oil. D
Publicado em: 2009
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8. Aplicação de termogravimetria acoplada à espectrometria de massas para caracterização de petróleo e determinação da curva de evolução de gás sulfídrico
With the new discoveries of oil and gas, the exploration of fields in various geological basins, imports of other oils and the development of alternative fuels, more and more research labs have evaluated and characterized new types of petroleum and derivatives. Therefore the investment in new techniques and equipment in the samples analysis to determine thei
Publicado em: 2009
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9. Cristalização de insulina suina com dioxido de carbono como agente acidificante / Crystallization of porcine insulin with carbon dioxide as acidifying agent
Crystallization is a separation and purification technique used in the production of chemical, pharmaceutical and food products. The majority of the solid products is obtained by crystallization/precipitation processes that probably are the second most important separation technology in terms of capacity, behind only distillation processes. Studies on the us
Publicado em: 2009
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10. Avaliação da estabilidade de bio-óleo obtido a partir de óleo de soja durante armazenamento
Fossil fuels are relatively inert maintaining their essential characteristics during tankage even for long periods. On the other hand, biodiesel degrades during storage. The changes that occur during the tankage can be harmful to the fuel injection systems. Therefore, it is of great importance to know the oxidation stability of the bio-oil as obtained by the
Publicado em: 2009
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11. Determinação experimental de correntes do processo de destilação molecular de residuos de petroleo e extensão da curva PEV / Experimental determination of molecular distillation process streams of petroleum residues and extension of TBP curve
A curva PEV é uma importante ferramenta que define os rendimentos de diversos derivados de petróleo obtidos em função dos seus pontos de ebulição verdadeiros, fornecendo informações importantes para decisões referentes ao controle dos processos de refinarias e sobre a qualidade do petróleo produzido. A curva PEV está bem estabelecida para pontos d
Publicado em: 2008
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12. Caracterização das correntes do processo de destilação molecular aplicado a frações pesadas de petroleo e desenvolvimento de correlações da curva PEV / Characterization of molecular distillation process applied to petroleum heavy factions and development of TBP curve correlation
O etanol perdido por evaporacao durante o processo de producao por fermentação pode ser recuperado por uma coluna de absorcao, a qual requer um sistema de controle robusto de acordo com sua complexidade. Este equipamento tambem e utilizado no tratamento do CO2, um co-produto deste processo. Neste sentido, no presente trabalho foi proposto e testado, o empr
Publicado em: 2008