Producing Of Steam
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Análise termodinâmica de processos de reforma do metano e da síntese Fischer-Tropsch / Thermodynamic analysis of methane reforming processes and Fischer-Tropsch synthesis
The reactions of reforming of light hydrocarbons, especially natural gas, are chemical reactions of great importance and represent key steps for large scale production of hydrogen for use in hydrogenation reactions or fuel cells, or synthesis gas production, for application in the ammonia or methanol production, or to Fischer-Tropsch (FT) synthesis. The Fisc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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2. Análise termodinâmica das reformas do metano (oxidativa e autotérmica), do etanol e da nafta
Catalytic reforming of hydrocarbons or other organic species is a technology usually employed in either improving traditional energy sources or producing alternative energy sources. Amongst the technologies employed in improving traditional energy sources, one can include catalytic reforming of petrochemical naphtha. Although being also employed to produce h
Publicado em: 2009
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3. Projeto, construção e levantamento de desempenho de um concentrador solar cilíndro parabólico com mecanismo automático de rastreamento solar
Apresenta-se um concentrador solar do tipo cilindro-parabólico para a produção de vapor para aplicações diversas. A superfície da parábola foi construída em fibra de vidro, com dimensões que seguem um estudo de otimização de parâmetros ópticos inerentes à reflexão dos raios solares pela superfície refletora e a interceptação desses raios pe
Publicado em: 2008
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4. Desenvolvimento de catalisadores de ródio e cobalto para a reforma a vapor do etanol.
The development of technologies based on the use of biofuels has taken the attention of the scientific community, due to the current dependence on fossil fuels, which results in an increase of air pollution. This pollution increase is related to public health problems and climate changes. In this context, the use of fuel cells moved by hydrogen is a mean of
Publicado em: 2007
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5. Nanopartículas de Co suportadas em SiO2 : síntese, caracterização e propriedades catalíticas para a reforma a vapor do etanol.
Colloidal Co Nanoparticles (Co-NPs) were used to prepare supported Co catalysts. The Co- NPs were obtained by thermal decomposition of the precursor Co2(CO)8 in the presence of oleic acid and trioctylphosphine oxide (TOPO), in an inert atmosphere (Ar). The Co- NPs/SiO2 were obtained by impregnation of a colloidal suspension of nanoparticles on the support no
Publicado em: 2007
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6. Validação da simulação dinâmica das etapas de evaporação e cristalização da produção de açúcar com dados obtidos em plantas industriais.
The central area of the State of São Paulo, Brazil, where the city of São Carlos is located, is one of the largest world producers of alcohol and granulated sugar from sugar cane. As the market become more competitive, the factories seek for new technologies and more rigorous mathematical approaches. This work is inserted in this context, where partnership
Publicado em: 2004
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7. Differences in Xylan Degradation by Various Noncellulolytic Thermophilic Anaerobes and Clostridium thermocellum
Hemicellulose fractions with a predetermined distribution of xylose, xylooligomers, and xylan fractions were obtained through steam explosion of wood by the steam explosion-extraction process of BFA-Hamburg, Hamburg, Federal Republic of Germany. A differential utilization of various molecular-weight fractions by several thermophilic anaerobic bacteria was de
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8. Detection of endotoxin on sterile catheters used for cardiac catheterization.
Pyrogen reactions during cardiac catheterization are an alarming complication that frightens patients and baffles many physicans. This report describes a simple, reproducible, precise technique for the measurement of endotoxin-like activity on the inner and outer surfaces of catheters intended for intravascular insertion. This technique is useful in document
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9. Synthetic oligodeoxyribonucleotide probes for detecting heat-stable enterotoxin-producing Escherichia coli by DNA colony hybridization.
DNA colony hybridization was used to identify and enumerate enterotoxigenic Escherichia coli strains in foods. The cells were identified and enumerated by using synthetic polynucleotide probes for the heat-stable enterotoxin genes. These 22-base oligonucleotides, made from known nucleotide sequences of the genes for the heat-stable enterotoxins of human and
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10. Effects of elevated dissolved CO2 levels on batch and continuous cultures of Aspergillus niger A60: an evaluation of experimental methods.
The effects of elevated levels of dissolved carbon dioxide (dCO2), produced by gassing with CO2-enriched gas mixtures, upon an industrial strain of Aspergillus niger (strain A60) producing citrate and gluconate were quantitatively assessed. Particular attention was paid to the reliability and accuracy of the steam-sterilizable dCO2 probe, especially in the p