HIDRODYNAMICS AND OPERATIONAL PARAMETERS OF A CONTINUOUS MULTISTAGE VERTICAL FLUIDIZED BED SYSTEM
| Autor: | J.J. Chanona-Pérez, T. Santiago-Pineda, I. Anaya-Sosa, L. Alamilla-Beltrán, G. F. Gutiérrez-López, M.G. Vizcarra-Mendoza |
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| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Instituto Politécnico Nacional IPN Redalyc-IPN Universidad Autónoma Metropolitana UAM Redalyc-UAM Revista Mexicana de Ingeniería Química (México) Num.1 Vol.6 |
| Popis: | A continuous vertical fluidized-bed dryer operates through a series of downcomers that transfer solids from an upper low-pressure stage to a lower high-pressure one. This work informs on the results testing a system of plastic particles of 0.009m diameter, 1090 kg/m3 of density, and 0.94 of sphericity, under a counter-current airflow in two pressure stages. Each stage has 0.25m internal diameter Perspex tube and a height of 0.6m. Perspex tubes having 0.032 and 0.057m, internal diameter, fitted with a conic valve at the end of each one were used as downcomers in the experimental system. By using a 23 experimental factorial design, it was observed that the fact with the highest influence on the results was the length of bed/ diameter of bed (L/D). It was also found that the downcomer with the widest diameter showed the best behavior when operating with an L/D = 0.5 and an L/D =1, and gave a lower dragging risk as compared to the narrowest diameter. |
| Databáze: | OpenAIRE |
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