| Abstract: | Solids leakage rates through different grids in two-dimensional and cylindrical beds of cracking catalyst fluidized with air have been measured. Single and multihole perforated plate grids and single nozzle grids were studied. Leakage fluxes were related to the average air velocity through the grid holes. The effects of superficial gas velocity and grid loading were also investigated. The decisive advantage of using nozzles to mini- mize solids leakage in fluidized beds has been observed. |
