Estudos dos parâmetros de projeto e teste de fluidização em bancada de leito fluidizado borbulhante

Abstract

Abstract - The present work collects general information on the main operating parameters in BFBG and presents a discussion of the influence of the operating parameters on the generated gas. Considering the main process characteristics, was described and analyzed the hydrodynamic performance of a new equipment of BFBG laboratory-scale operating at atmospheric pressure. For this purpose, technical details of the facility and materials used are presented, subsequently, fluidization tests at different temperatures are performed, aiming to compare with the main mathematical models available in the literature that describe the physical characteristics of the bed. The tests were performed using Electrofused Alumina Oxide (High Alumina) as bed material and air as a fluidizing agent. The results indicate that homogeneous fluidization occurs at velocities greater than 1.7 times the minimum fluidization velocity. The physical characteristics of the bubbles agree with the models proposed in the literature, and the formation, growth, coalescence, and eruption of bubbles are concentrated near the reactor walls. Increasing the fluidization velocity increases the coalescence of the bubbles, this gives rise to larger eruptions that may favor mixing of the fuel with the bed material.