Two new methods for the determination of solids movement in a fluidized bed have been developed and evaluated in this work. The first method used a deflecting plexiglass rod with strain gages attached to the base which is immersed in the bed of fluidized solids. The probe will yield a...
Elutriation of silica sand particles from a 0.9 X 0.9 m cold
fluidized bed was studied. Data were collected for cases with and
without tubes. During experiments the position of the tube bundle
above the distributor plate and the superficial velocity were varied.
Runs were made at velocities of 0.9...
Gas mixing is studied in fluidized beds of large particles. The
bed is 0. 483 m by 0. 127 m (19 in. by 5 in. ) in cross section and has
transparent plexiglass panels on the front and back. A tube matrix
made of twenty-seven 50.8 mm (2 in.) diameter...
Mixing of ferrite tracer with silica sand was studied in a 0.91 m
x 0.91 m cold fluidized bed. Inductance probes located Inside dummy
heat transfer tubes [in a 4 x 4 x 4 array] were used to monitor a
ferrite tracer with physical properties similar to coal as it...
Observation shows that bubbles in large particle fluidized beds
behave quite differently from beds of fine particles. They expand and
can grow faster than they rise. Bubbles in fine particle beds seem to
grow primarily by coalescence, while in large particle beds they are
observed to grow mainly without coalescence....