Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THEORETICAL AND EXPERIMENTAL ANALYSES OF AIR-SILICA BUBBLING FLUIDIZED BED VARYING OPERATION PARAMETERS
Submission Author:
João Diego Moreira Feitosa , CE
Co-Authors:
João Diego Moreira Feitosa, William Barcellos, Fernanda Emanuelle Possidonio Cardoso, Ianna Larah Mendes Silva, José Welbson Carneiro de Araújo, Francisco Nivaldo Aguiar Freire
Presenter: João Diego Moreira Feitosa
doi://10.26678/ABCM.COBEM2019.COB2019-1031
Abstract
Solid particle fluidization technology applied to thermochemical conversion is one of the most advantageous ways to use biomass due to its low emissions of pollutants compared to conventional methods. Therefore, a more detailed study of factors that influence the fluidization of solid particles is necessary for the understanding of the process and application of operation and design parameters in favor of the efficiency of fluidized bed reactors. This paper focus principally on the theoretical and experimental studies of influence factors on bubbling fluidization regime. The principal parameters of the bed were studied, such as: diameter, height, compaction, wall roughness, particle size and temperature. The experimental apparatus is constituted of three acrylic tubes with different internal diameters: 0.043, 0.064 and 0.089 m; and two steel reactors coated with refractory material with internal diameters of 0.053 and 0.110 m. The inert material was sand with granulometry varying between 230 and 20 MESH ASTM. Based on results, it was possible to observe that the wall roughness has more influence on small diameters (0.053 m) and lower effect on larger diameters (0.110 m). Further, the bubbling regime range decreases proportionally to the bed diameter and inversely to the height.
Keywords
fluidized bed, bubbling fluidization regime, influence parameters, Biomass
