Readequação da prática de laboratório de engenharia química 1: Leito fluidizado.

Abstract

The fluidized bed is a fluid rising by a bed of particles, showing a great transfer of heat and mass, used in the pharmaceutical industry, fertilizer industry and chemical reactors. Given the great importance of fluidized-bed and your wide application, this work seeks to readjust a practical unit for the student to perform studies on the topic, showing the analysis to be performed a fluidized bed. The initial goal was to mount a Fluidization curve for a water system and glass beads. The following work has shown that for this system the average diameter of 0.848 mm for 1 bed and 0.776 mm for bed 2 to glass spheres, the bed 1 presented a very high load loss that did not lead to the Fluidization. To the bed 2 the column featured a very fast Fluidization and drove to a regime of bubbles in the system. Next was studied the Fluidization using air as a fluid, but the same also introduced fast Fluidization and under bubbles. Presented a new goal to practice, through the study of various materials, performing the calculation of their respective densities and average diameter of Sauter, so the student would study the different schemes conducted in Fluidization second Geldart chart (1996). The goals were not achieved, as the unit will need of adjustments, such as the use of a pressure regulator and materials of different diameters and densities for analysis. So after these adjustments and suggestions the unit would be ready for use.