Rotary Dryer
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Modelling of fertilizer drying in a rotary dryer: parametric sensitivity analysis
This study analyzed the influence of the following parameters: overall volumetric heat transfer coefficient, coefficient of heat loss, drying rate, specific heat of the solid and specific heat of dry air on the prediction of a model for the fertilizer drying in rotary dryers. The method of parametric sensitivity using an experimental design was employed in t
Brazilian Journal of Chemical Engineering. Publicado em: 2012-06
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2. Estudos fluidodinâmicos e de secagem de fertilizantes em secadores rotatórios concorrentes
A secagem consiste em uma importante operação na qual se submetem diversos produtos industrializados. Porém, este processo é concebido como uma operação unitária que demanda uma intensa quantidade de energia o que implica em um grande impacto comercial no custo do produto final. O secador rotatório convencional de contato direto consiste em um equipa
Publicado em: 2010
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3. Modeling and experimental study of hydrodynamic and drying characteristics of an industrial rotary dryer
The purpose of this work was to analyze the hydrodynamic and drying aspects of a rotary dryer used in a fertilizer industry. A set of equations to predict the solids holdup in the flights, the length of fall, the residence time of particles and the drying variables was evaluated by comparison to experimental measurements performed in an industrial rotary dry
Brazilian Journal of Chemical Engineering. Publicado em: 2009-06
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4. Analise da secagem de residuo de leite de soja "Okara" em secadores de leito de jorro e de cilindro rotativo assistido a microondas / Drying of soy milk residue in the spouted bed dryer and rotary cylindrical dryer assisted by microwaves
The use of industrial residues has become more and more important to avoid the environment contamination and to make use of resources considered wastes in the chemical and food industries. Actually, the approximated soy milk production in the world is unknown; however, it is known that large amounts of its residue, named "Okara", are generated by its product
Publicado em: 2009
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5. Automação de um sistema rotatório para secagem do rejeito de maracujá
O secador rotatório é um dos equipamentos amplamente utilizados nas indústrias de processamento. Sua operação em modo de controle automático é importante para manter, principalmente, a umidade do produto final na especificação de interesse. As estratégias de controle clássicas, tais como o controle PID (proporcional integral derivativo), são larg
Publicado em: 2009
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6. Comparação do desempenho do secador roto-fluidizado com o secador rotatório convencional : secagem de fertilizantes
The objective of this work was to analyze the phenomena of mass and energy transfer between heat air and the granulated simple super-phosphate in rotary dryers in the versions: conventional with cascading and roto-fluidized. A study of fluid dynamics of flowing of particles in conventional rotary dryers was made with objective of determine the conditions tha
Publicado em: 2008
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7. Estudo da fluidodinâmica e da secagem de um secador rotatório da indústria de fertilizantes
The dimensioning, the modeling and the simulation of the rotary dryers constitutes a big challenge. The drying involves mass and heat transfer, and fluid dynamics processes of the most different forms. Great part of the dryers projects are done according to empiricism and based on the experience of engineers and on the scale-up of prototypes. The purpose of
Publicado em: 2008
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8. Estudo da fluidodinÃmica e da secagem de um secador rotatÃrio da indÃstria de fertilizantes
O dimensionamento, modelagem e simulaÃÃo de secadores rotatÃrios constituem em um grande desafio. A secagem envolve transferÃncias de calor e massa, e processos fluidodinÃmicos das mais diferentes formas. A maior parte dos projetos de secadores à feita por empirismo, com base na experiÃncia de engenheiros e âscale-upâ de protÃtipos. O objetivo do t
Publicado em: 2008
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9. A study of particle motion in rotary dryer
The purpose of this work was to study the performance of a rotary dryer in relation to number of flights. In this work an equationing was proposed to calculate the area used by the solids in two-segment flights of with any angle between the segments. From this area, the flight holdup and the length of fall of the particles were calculated for different angle
Brazilian Journal of Chemical Engineering. Publicado em: 2007-09
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10. Modeling heat and mass transfer in the heat treatment step of yerba maté processing
The aim of this research was to estimate the leaf and twig temperature and moisture content of yerba maté branches (Ilex paraguariensis Saint Hilaire) during heat treatment, carried out in a rotary kiln dryer. These variables had to be estimated (modeling the heat and mass transfer) due to the difficulty of experimental measurement in the dryer. For modelin
Brazilian Journal of Chemical Engineering. Publicado em: 2007-03
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11. Technical and economic analysis of corn drying in rotary dryers / Análise técnica e econômica da secagem de milho em secadores rotativos
The objective of this work was to analyze the feasibility of rotary dryers with radial air distribution, which is used in coffee processing, for corn drying. Energy consumption, drying cost and final quality of the product were evaluated. The drying air temperature was maintained at 80 and 100 C. The drying systems consisted of a commercial rotary dryer and
Publicado em: 2006
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12. Evaluation of horizontal rotary dryer using firewood and liquefied petroleum gas on unhusked desmucilated cherry coffee drying / Avaliação de secadores horizontais rotativos com utilização de lenha e gas liquefeito de petroleo em secagem de cafe cereja descascado desmucilado
ormado.
Publicado em: 2005