Ceramic – Glass
Raw materials for Glass Manufacturing:
Solvay’s Process – Lime Calcination :
In the lime kiln operation, we should consider 2 factors as important; one being the quantity of gas and another composition of gas. The operational capacity of the kiln is purely determined by the amount of lime required for ammonia recovery in the distillation stage and hence the quantity of CO2 required will not be considered a driving factor for kiln operational capacity determination. However the kiln often produces only excess of CO2 than the process demand and hence this excess gas is released as waste to air most of the time. However it is essential to de-dust the gas before emitting it to air and it has to be noted that the gas emitted will be similar to that in demand in the process but as this is an excess amount it has to be considered a process waste. Measures should be taken to see to that the fuel flow rate is correct enough to minimise the emission of carbon monoxide. The CO emission depends upon the load, the quality of fuel used and the composition of the limestone used as raw material.
To be Contd….
