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The
use of ‘Fluid-Bed’
technique
on industrial
scale, has
been considerably
on the increase,
specially
for drying,
cooling,
calcination,
agglomeration,
combustion
and in many
other unit
operations,
due to its
manifold
advantages.
Compared
to conventional
batch and
other continuous
drying method,
Fluid-Bed
technology
offers several
advantages
such as,
no product
lump formation
/ caking,
no particle
overheating/
cooling,
a well defined
product
residence
time, uniform
product
quality,
better energy
economy
due to lower
specific
heat requirements
etc.,
In
‘Fluid-Bed"
the material
is uspended
in an upward
moving hot-air
and the
mass behaves
like a boiling
fluid after
"Fluidization".
Thus Fluidization is basically a state of dynamic balance of solids in fluid. Quantity of fine solids in a form of bed are placed on a distributor plate and hot air is passed slowly. |
