Petroleum Products
Mostrando 13-24 de 129 artigos, teses e dissertações.
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13. Química e sustentabilidade: novas fronteiras em biocombustíveis
This contribution discusses the state of the art and the challenges in producing biofuels, as well as the need to develop chemical conversion processes of CO2 in Brazil. Biofuels are sustainable alternatives to fossil fuels for providing energy, whilst minimizing the effects of CO2 emissions into the atmosphere. Ethanol from fermentation of simple sugars and
Quím. Nova. Publicado em: 2013
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14. Adsorção de o-xileno em argila fluidgel organofílica em fase gasosa / Adsorption of o-xylene onto organoclay fluidgel in gas phase
The industrial growth allied to use of petroleum products generate numerous volatile organic compounds (VOC) that are continuously emitted to the atmosphere, degrading air quality and causing serious problems to human health and environment. Among the VOC, the so-called BTEX (benzene, toluene, ethyl benzene, and xylene), are the most important in terms of to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/07/2012
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15. Desafios e oportunidades da geração eólica e termelétrica a gás natural no Sistema Elétrico Peruano. / Challenges and opportunities of the wind generation and to natural gas thermal in the Peruvian Electricity System.
Several countries around the world have increasingly sought to diversify their electrical matrix in order to reduce dependence on fossil fuels and reduce emissions of gases responsible for worsening greenhouse effect in the atmosphere. As a result, has grown the participation of some renewable energy sources that until two decades ago did not occupied a prom
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012
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16. Stochastic Benders decomposition for the supply chain investment planning problem under demand uncertainty
This paper presents the application of a stochastic Benders decomposition algorithm for the problem of supply chain investment planning under uncertainty applied to the petroleum byproducts supply chain. The uncertainty considered is related with the unknown demand levels for oil products. For this purpose, a model was developed based on two-stage stochastic
Pesqui. Oper.. Publicado em: 04/12/2012
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17. 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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18. Biosurfactants production by yeasts using soybean oil and glycerol as low cost substrate
Biosurfactants are bioactive agents that can be produced by many different microorganisms. Among those, special attention is given to yeasts, since they can produce many types of biosurfactants in large scale, using several kinds of substrates, justifying its use for industrial production of those products. For this production to be economically viable, the
Brazilian Journal of Microbiology. Publicado em: 2012-03
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19. Determinação de compostos carbonilados e carboxilados em derivados de petróleo
Although metals and nitrogen/sulfur compounds have been the main concern of the petroleum industry, issues concerning the harmful effects on catalysts poisoning and product contamination by other contaminants such as oxygen-containing compounds have been raised. Trace amounts of carbonyl and carboxyl compounds in petroleum products can lead to catalyst poiso
Quím. Nova. Publicado em: 2012
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20. Economia residencial rural de energia no Brasil com enfoque na lenha.
The energy mix in Brazil is dominated by petroleum products and renewable energy, including hydroelectric energy and biomass. Energy consumption in the domestic sector follows a similar pattern as the national trend, with a third of energy coming from biomass (mostly wood), a third from liquefied petroleum gas (LPG) and a third from electricity, the last of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2011
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21. Valoração dos produtos ultrapesados provenientes da destilação molecular de petróleo / Assessment of petrolem molecular distillation ultra-heavy products
Esta dissertação baseia-se na valoração da corrente de destilado e da corrente de resíduo geradas na destilação molecular (DM) do petróleo as quais são obtidas a partir do resíduo de vácuo (RV) proveniente da unidade de destilação a vácuo (UDV). Primeiramente se separou os asfaltenos da corrente ultrapesada do resíduo da DM (RDM), seguido do t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/10/2011
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22. Avaliação da permeabilidade em membrana tubular de TiO2/AL2O3 dos constituintes do sistema reacional heterogêneo para produção de biodiesel / Assessment of tubular membrane permeability in the constituents TiO2/AL2O3 reaction heterogeneous system for the production of biodiesel
In addition to being biodegradable and renewable, Biodiesel presents physicochemical properties very similar to those of petroleum-based diesel, so a new engine is not required for its use. The most commonly used chemical process for obtaining biodiesel is transesterification. In this process, through the reaction of an alcohol with triacylglycerols (TAG) pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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23. Desenvolvimento de um analisador de processo por espectroscopia no infravermelho próximo (NIR) para previsão de propriedades de derivados de petróleo / Development of a near-infrared process analyzer for the prediction of properties of petroleum products
O trabalho trata do desenvolvimento de um analisador de processo utilizando a espectroscopia no infravermelho próximo (NIR) para prever propriedades de derivados de petróleo, como gasolina e querosene de aviação. O instrumento foi projetado para ser instalado diretamente em uma linha de processo numa unidade industrial, realizando, de maneira automatizad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011
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24. Síntese de insumos químicos a partir de biodiesel produzido pela transesterificação de gordura animal / Synthesis of intermediary chemicals produced from biodiesel by animal fat
Due to technical and economic reasons, the biodiesel production from animal fat, to be used as biofuel, is disadvantageous when compared to some processes that utilize raw materials from vegetables origin. However, biodiesel derived from animal fat has chemical characteristics that allow its use as an input for a wide range of products with high added value.
Publicado em: 2010