Gasifier
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. NUMERICAL SIMULATION OF COAL GASIFICATION IN A CIRCULATING FLUIDIZED BED GASIFIER
Abstract This paper presents a 3D full-loop simulation of a circulating fluidized bed gasifier. The model is validated with experimental results from the literature. The validated model is thereupon used to compare Bubbling Fluidized Bed (BFB) and Circulating Fluidized Bed (CFB) gasifiers to highlight the effect of a change in fluidization regime from bubbli
Braz. J. Chem. Eng.. Publicado em: 09/12/2019
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2. NUMERICAL PREDICTION OF BUBBLE SIZE AND INTERFACIAL AREA CONCENTRATION IN THE LIQUID BATH OF AN ENTRAINED-FLOW COAL GASIFIER
Abstract A CFD-ABND coupling model was used to study the flow characteristic of gas-liquid two-phase flow in the process of gas passing through the liquid bath of a water-coal-slurry entrained-flow gasifier. In this model, an average bubble number density (ABND) approach was employed and merged with the two-fluid model. A two-phase version of the RNG k-ε tu
Braz. J. Chem. Eng.. Publicado em: 2016-03
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3. MicrogeraÃÃo de energia elÃtrica com gÃs de sÃntese de um gaseificador concorrente utilizando ItaÃba mazilaurus / Microgeneration of electricity with syngas from a downtraft gasifier using ItaÃba mazilaurus
The use of biomass as energy source is one of the most promising, because it contributes to reduce emissions of carbon dioxide in the atmosphere and allow the decentralized energy generation. Gasification is a technology of processing biomass energy into a gaseous biofuel of low calorific value. The gas can be used in Otto cycle engine for power generation i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/09/2012
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4. O uso da lógica fuzzy no controle das temperaturas de um conjunto gaseificador/combustor de biomassas / Using fuzzy logic to control the temperatures of a set gasifier/combustor of biomasses
This study consisted in designing and building a concurrent biomass gasifier that, when attached to a gas combustor, produced a mix of hot air and ambient air to be used for drying grains, among other things. It aimed at controlling the combustion zone gasifier temperature and exhaust hot air temperature. The theoretical mathematical framework chosen to deve
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/04/2012
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5. Estudo da viabilidade do uso do GLP e de um gaseificador de biomassa para desidratação de banana / Study the feasibility of the use of LPG and a biomass gasifier for dehydration of banana
A banana (Musa spp.) é uma das frutas mais consumidas no mundo e sob o ponto de vista biológico, é um produto agrícola que apresenta uma das maiores perdas na produção, devido à decomposição pós-colheita, o que sugere a industrialização como alternativa para um melhor aproveitamento da produção. Com este estudo objetivou-se analisar a viabilida
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/07/2011
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6. Desenvolvimento e avaliação de um gaseificador de biomassa e estudo do potencial de produção de biogás com resíduos agrícolas e da avicultura / Development and evaluation of a biomass gasifier and investigation of biogas production potential with agricultural and poultry wastes
Com o objetivo de desenvolver soluções alternativas para aquecimento de ar, que pode ser usado para o condicionamento térmico de aviários, secagem de produtos agrícolas e desidratação de frutas, foram estudadas a gaseificação de biomassa e a biodigestão anaeróbia de cama de aviário, esterco de galinhas, palha de trigo e silagem de centeio. O trab
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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7. Performance prediction and validation of equilibrium modeling for gasification of cashew nut shell char
Cashew nut shell, a waste product obtained during deshelling of cashew kernels, had in the past been deemed unfit as a fuel for gasification owing to its high occluded oil content. The oil, a source of natural phenol, oozes upon gasification, thereby clogging the gasifier throat, downstream equipment and associated utilities with oil, resulting in ineffectiv
Brazilian Journal of Chemical Engineering. Publicado em: 2008-09
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8. Controle e avaliação de um conjunto gaseificador-combustor de fluxo concorrente, utilizando como combustível a biomassa de lenha de eucalipto / Control and evaluation of a set gasifier-combustor with co-current flow using eucalyptus wood as a fuel
Recently, concern has grown considering environmental issues associated with the preservation of natural resources with the intention of improving the present and future quality of life. Biomass gasification shows to be a sustainable technology for power generation with low greenhouse gas emissions. One of the problems by using the gasifier for air heating p
Publicado em: 2008
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9. Biomass gasifier in heating poultry hangar and its relation with the thermal comfort, air quality and productive performance of broiler chickens / Gaseificador de biomassa no aquecimento de aviários e sua relação com conforto térmico, qualidade do ar e desempenho produtivo de frangos de corte
Brazil is actually the third highest producer of the broiler chicken meat throughout the world. For 2007, it is foreseen it would show some 6.1% growth in the exports. To optimizing the productive performance in poultry sector, it is necessary to adapt the environment to poultry raising, by using techniques that satisfy the thermal and hygienic aspects of th
Publicado em: 2007
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10. GaseificaÃÃo de materiais lignocelulÃsicos para geraÃÃo de energia elÃtrica / Gasification of lignocellulosic materials for generation of electric energy
The gasification of solid fuel as biomass can be defined as the transformation of it into a combustible gas. This gas is made up of a mixture of carbon monoxide, hiydrogen, metane, small amounts of other light hydrocarbonetes, carbonm dioxide and water vapor, in addition to nitrogen, which is presetn in air. The objective of this work was to built a contercu
Publicado em: 2007
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11. Evaluation of an SI engine running with gas of flow power heat trate from gasification of rice husk / Avaliação do funcionamento de motor ice com gas de baixo poder calorifico proveniente da gaseificação de casca de arroz
Nowadays there is a great waste of organic matters, residues and other substances that could be used in a power plant. Examples can mainly be observed in the whole world and in regions where the poverty reigns and where the electric energy could be of great aid.The use of small power generation plants integrated to a gasification with an internal combustion
Publicado em: 2006
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12. Attendance of electric power residence for isolated communities of low potency of the interior of the state of Pará through a gaseifier of 1kw / Atendimento de energia elétrica domiciliar para comunidades isoladas de baixa potência do interior do estado do Pará através de um gaseificador de 1kw
In Pará State, almost 21% of its population has no access to use of electric energy in their residence. To this universe belongs the target audience from this report, that are the isolated communities. Due the large territorial extension and hydrographic basin in Pará State, this communities will have many difficulties to be served by the extension of dist
Publicado em: 2006