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One thousand kg per day (1 metric ton/day) of a slurry (watersolid mixture) containing 10% by weight of CaCO3 are to be filtered in a

One thousand kg per day (1 metric ton/day) of a slurry (watersolid mixture) containing 10% by weight of CaCO3 are to be filtered in a rotary vacuum filter. The cake exiting the rotary filter contains 40% CaCO3. This cake is then placed into a drier and dried to a moisture content of 9.09 kg H2O/100 kg CaCO3. The air, at atmospheric pressure, enters the drier at 120ºC and 3% of relative humidity, and exits the unit saturated at 50ºC. The barometer reads 756mmHg.

a) Draw a picture of the process.

b) Determine the water content of the air entering the drier (mol%)

c) Determine the water content of the air entering the drier (mass%)

d) Determine the dew point of the air entering the drier

e) Determine the water content of the solid exiting the drier (mass% of water)

f) Determine the total mass of the filter cake entering the drier (kg/day)

g) Determine the amount of water removed from the cake in the drier (kg/day)

h) Calculate the amount of humid air that enters the drier (kg/day)



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a T 120 C R H P i P s x 100 is sat Pr of water at 120 C 18607 atm So P i 003 x 19607 0058821 atm Mol... blur-text-image

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