Estudos fluidodinâmicos e de secagem de fertilizantes em secadores rotatórios concorrentes

• Ano de defesa: 2010
• Autor(a) principal: Silvério, Beatriz Cristina
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Uberlândia; BR; Programa de Pós-graduação em Engenharia Química; Engenharias; UFU
• Palavras-chave em Português: Secador rotatório; Fertilizantes; Fluxo concorrente; Secagem; Drying; Rotary dryer; Fertilizers; Concurrent flow; CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA
• Link de acesso: https://repositorio.ufu.br/handle/123456789/15141

Drying is an important process that a lot of products were submitted. However, this process is usually very energy-intense and has a large commercial impact on the cost of the final product. The conventional direct rotary dryer consists of equipment widely used in industrial area due to advantages such as, a high processing capacity of a wide variety of materials. This dryer is commonly used to dry and process granular materials, and has application across a wide range of industries like the fertilizer industry. The dryer consists of a rotating cylindrical shell rotated about its axis at a constant speed and slightly inclined to the horizontal. This type of equipment is characterized by the high consumption of energy required to heat the drying air at high temperatures. This work aims to study the aspects of fluid dynamics and fertilizer drying of super-phosphate fertilizer in concurrent direct rotary dryers and compare the performance of the same for other configurations that have been studied by the research group of systems particulated at FEQUI / UFU. The results of this study have values of loading, residence time, drying rate, and the difference between concurrent and countercurrent rotary dryers, working under the same operating conditions, enabling the evaluation of new versions of rotary dryers because of detailed study of conventional configurations. This study also describe a mathematic model to predict the air and solid temperature profiles and the solid moisture profile in a concurrent rotary dryer and compared the simulation results with the experimental data.