Multiple Radioactive Particle Tracking in Laboratory Scale Air / Polyethylene Fluidized Beds

Schober, L. and Kantzas, A.

DOI: 10.1002/cjce.5450820202
Canadian Journal of Chemical Engineering, 82(2), April 2004, Pages 220-226.


Multiple radioactive particle tracking is a noninvasive technique used to study flow phenomena within gas-solid fluidized beds. Five tagged polyethylene particles were added to a fluidized bed and tracked using two gamma cameras set perpendicular to one another. One camera collected x-z particle locations and the other collected y-z particle locations, while both cameras collected particle count rate values. The x-z and y-z particle movement information was combined to form three-dimensional particle trajectories, and in turn used to calculate instantaneous flow information. The information from the five particles was then averaged and used to calculate three-dimensional information regarding solid circulation parameters.

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