Abstract
The flow of fine solid particles was measured in a gas fluidized bed of 12-cm i.d., where silica alumina particles, 60-65 μm in diameter, were fluidized by air. The minimum fluidizing velocity of the solid particles was 0.2-0.4 cm/s. The measuring system was composed of bifurcated optical fiber probes and a data processing unit. Silica fibers and plastic fibers were used for guiding ultraviolet light and collecting fluorescent visible light, respectively. Sensitivity and accuracy of the system were substantially improved over that of the previous system. The pulse response curves of fluorescent tracer particles were measured more than 100 times under the same conditions and were statistically analyzed. The time-averaged velocity and the root mean square of velocity fluctuation of solid particles were determined in upward, radial and oblique directions at the center of the fluidized bed. The results were in agreement with literature data.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
