Measurement of Residence Time Behavior in a Continuously Operated Spouted Bed
Fluidization
2019
Fluidization XVI
General Paper Pool
5A: Fundamentals of Fluidization
Wednesday, May 29, 2019 - 8:55am to 9:07am
Experiments were performed with different bed masses and gas volume flow rates. Besides the original chamber configuration, plates with different opening geometries, as e.g. a mousehole, were inserted to physically separate the four chambers. It was found that the sealing of the plates is an important step in order to force the particles to flow through the opening geometry. In addition, experiments with closed in- and outlet boundary conditions were performed to characterize the back-mixing and the flow behavior of the particles dependent on the separation plates. Therefore, the tracer particles were inserted in one chamber and the distribution after a defined process duration was used for quantification of back-mixing. It was found that the back-mixing can be reduced by decreasing the size of the mousehole in the separation plates. Nevertheless, the size reduction is limited as a minimum hole diameter has to be provided for reaching the desired mass flow rate through the apparatus. The experimental data are used for validation of simulations (e.g. CFD-DEM, rCFD) of continuous spouted bed operation.