Minimum Fluidization Velocity, Bubble
Behaviour And Pressure Drop In Fluidized Beds
With A Range Of Particle Sizes
Author(s)
B. M. Halvorsen & B. Arvoh
Abstract
Fluidized beds are used in the production of pure silicon for solar cells. The
particles are fully consumed during the reaction and the particles in the reactor
have a large range of diameters. When the range of particle sizes is wide, the
particles have a tendency to segregate. A series of experiments are performed to
study the particle segregation and the influence of particle segregation on the
bubble formation and flow behaviour. Experiments are performed in a two
dimensional bed. The minimum fluidization velocity and the pressure drop have
been measured. Spherical glass particles with different ranges of particle sizes
are used in the experiments. Superficial gas velocities well above the minimum
fluidization velocities are used in the study of segregation and bubble formation.
Corresponding simulations are performed by using the commercial CFD code
Fluent 6.3. The computational results are compared to the experimental data and
the discrepancies are discussed.
Keywords: fluidized bed, minimum fluidization velocity, particle size, pressure
drop, particle segregation, fluent.
Keywords
fluidized bed, minimum fluidization velocity, particle size, pressure
drop, particle segregation, fluent
Related Book
Other papers in this volume
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