Problem-i: decomposition of

1) Calculate the heat energyrequired to calcine 1000Kg limestone of composition  and  charged at 298K. Lime is discharged at 1173K and gases leave at 473K.

Solution:

(1)

(2)

Material balance gives

Calcined product and gases










Heat of decomposition of reaction 1 and 2 .

Using Cp values one can calculate sensible heat in calcined products and gases. Reference state is 298K
Sensible heat in

Sensible heat in

Sensible heat in  can be evaluated as







 Answer