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A granular polymeric material with an initial moisture content of 0 . 5 5 0 kg H 2 O / kg dry matter will be
A granular polymeric material with an initial moisture content of kg HOkg dry matter will be dried in a fluidized bed dryer to a moisture content of kg HOkg dry matter. The polymeric moist solid is fed to the fluidized bed at a flow rate of kgh at deg C The moisture content of the drying air is kg HOkg dry air and it enters the dryer at deg C
Since the polymeric solid decomposes at deg C the exit temperature of the product from the dryer was chosen as deg C The experimentally determined minimum fluidization speed of the moist polymer is um ms density kgm heat capacity kcalkgdeg Ca Determine the required air flow rate
b Risk of condensation of the air coming out of the dryer
Check for
c Maximum air speed and minimum fluidization.
required dryer space at twice the speed.
determine
d According to the given grain size distribution, the particles
Determine whether there will be drift dust drift with the drying air by calculating the particle size to be dragged.
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