Petroleum Refining
Mostrando 1-12 de 45 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. Electroremediation of deactivated catalysts from fluidised catalytic cracking for vanadium removal - the effect of a dual cathode chamber reactor
Abstract The aim of this study was to evaluate the quantity of vanadium removed through electrokinetic remediation applied to catalyst waste used in a fluid catalytic cracking process. In excess, vanadium affects process efficiency by reducing the catalyst’s activity, causing deactivation and reducing its useful life in petroleum cracking during refining.
Braz. J. Chem. Eng.. Publicado em: 2018-01
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3. Chemical modification of cobalt ferrite nanoparticles with possible application as asphaltene flocculant agent
Asphaltenes can cause enormous losses in the oil industry, because they are soluble only in aromatic solvents. Therefore, they must be removed from the petroleum before it is refined, using flocculant agents. Aiming to find new materials that can work as flocculant agents to asphaltenes, cobalt ferrite nanoparticles were chemically modified through acid-base
Mat. Res.. Publicado em: 02/04/2013
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4. Preparative separation of C19-diterpenoid alkaloids from Aconitum carmichaelii Debx by pH‑zone-refining counter-current chromatography
The technique of pH-zone-refining counter-current chromatography was successfully applied to preparatively separate three C19-diterpenoid alkaloids from the crude extracts of Aconitum carmichaelii for the first time using a two-phase solvent system of petroleum ether-ethyl acetate-methanol-water (5:5:1:9, v/v/v/v). Mesaconitine (I), hypaconitine (II), and de
Quím. Nova. Publicado em: 2013
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5. PROJECT EVALUATION IN PETROLEUM REFINING INDUSTRY BY THE AHP METHOD / APLICAÇÃO DO MÉTODO AHP NA ANÁLISE DE PROJETOS DA INDÚSTRIA DE REFINO DE PETRÓLEO
Na maioria das empresas, ferramenta de apoio à decisão é sinônimo de questões tangíveis como Valor Presente Líquido (VPL) e Taxa Interna de Retorno (TIR) do investimento, e é a maneira mais adotada para mostrar o valor financeiro que cada projeto agrega à empresa e aos acionistas. Verifica, também, se o projeto está coerente com a taxa de atrativi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
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6. Refinery production planning and scheduling: the refining core business
Intelligent production planning and scheduling are of paramount importance to ensure refinery profitability, logistic reliability and safety at the local and corporate levels. In Brazil, such activities play a particularly critical role, since the Brazilian downstream model is moving towards a demand-driven model rather than a supply-driven one. Moreover, ne
Brazilian Journal of Chemical Engineering. Publicado em: 2012-06
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7. Processos naturais de biodegradação do petróleo em reservatórios
Petroleum biodegradation in reservoirs is a process caused by different microorganisms affecting many oil deposits which modifies the oil composition in a quasi-stepwise process starting from n-alkanes and isoprenoids through to diasteranes. This causes oil souring and increased viscosity, sulfur and metal content, having a direct impact on oil production an
Quím. Nova. Publicado em: 2012
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8. Elaboración de recubrimientos cerámicos mediante proyección térmica por combustión a partir de residuos sólidos industriales
Ceramic coatings were elaborated onto carbon steel substrates by oxy-fuel thermal spraying process from catalysts waste used in petroleum refining. The adhesion and micro-hardness Vickers were evaluated according to ASTM C633-01(2008) and ASTM C1327-08 standards respectively, with adhesion values varying between 2,9 and 17,7 MPa and values of microhardness V
Matéria (Rio J.). Publicado em: 2012
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9. Caracterização prévia de petróleo com vistas à otimização de processos / Previus crude oil characterization in order to optimize refinning processes
Esta tese tem como objetivo apresentar um estudo detalhado para a caracterização de petróleos, tanto no âmbito do desenvolvimento de modelos capazes de prever propriedades físico-químicas clássicas, como também avaliar os fenômenos associados a instabilidades decorrentes de características químicas. Para alcançar este objetivo, duas ações foram
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/06/2011
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10. O uso da simulação em ergonomia de concepção: uma reflexão a partir do projeto de uma cabine de ponte rolante em uma refinaria de petróleo
Despite the benefits provided by the ergonomic approach to the design process, their participation is still limited, given that the specifics of workers as gestures and reasoning, in most cases, are not covered by the professionals responsible for developing new systems work. Thus, this work is to present a case study involving the practice of ergonomic desi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2011
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11. DEVELOPMENT OF METHOD FOR DETERMINATION OF AS, SB AND SE IN BIODIESEL AND PETROLEUM BY INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROMETRY WITH SAMPLE INTRODUCTION BY HYDRIDE GENERATION (HG ICP / DESENVOLVIMENTO DE MÉTODO PARA DETERMINAÇÃO DE AS, SB E SE EM BIODIESEL E PETRÓLEO POR ICP OES COM INTRODUÇÃO DE AMOSTRA POR GERAÇÃO DE HIDRETOS
With the increasing world population and the consequent increasing in industrial activities and fuel consumption, chemical pollution has been a major problem of the XXI century. Alternatives that can minimize such problems are targets of researches, such as the use of biodiesel, a renewable and less polluting fuel. Elements usually found in low concentration
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2011
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12. Análise de criticidade de descontinuidade em um bocal de um vaso de pressão
Pressure vessels and pipes are essential equipment in the chemical, petrochemical, petroleum refining, among others. The safety operation of this equipment is an important aspect, since failures can vary from large financial losses to catastrophic consequences. Evaluation discontinuity found in inspections can be perfomed by fitness for service methodology w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011