Bubble phenomena in three-phase fluidized beds as viewed by a u-shaped fiber optic probe
Journal Article
·
· AIChE Symp. Ser.; (United States)
OSTI ID:6339097
A novel U-shaped fiber optic probe was applied in the present contribution to the characterization of bubbles in a cylindrical three-phase fluidized bed. Air, water and glass beads (335..mu..m) were used as the gas, liquid and solid phases respectively. Several single core silica fibers were used to guide the helium-neon laser beams into the fluidized bed, each of them constituting a U-probe. The design of the U-probes was based on the difference of refraction indexes between gas and liquid phases. Using the U-shaped probes, bubble characteristics such as shape, included angle, bubble velocity and axial bubble length were systematically measured. In addition, the changes of the bubble frequency with the radial position, the variations of the mean bubble diameter with the liquid superficial velocity, the bubble size distribution and their changes with the fluidized bed operation conditions were also investigated.
- Research Organization:
- Department of Chemical Engineering, Faculty of University of Western Ontario, London, Ontario
- OSTI ID:
- 6339097
- Journal Information:
- AIChE Symp. Ser.; (United States), Journal Name: AIChE Symp. Ser.; (United States) Vol. 80:241; ISSN ACSSC
- Country of Publication:
- United States
- Language:
- English
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