Ceramic – Glass
Raw materials for Glass Manufacturing:
Solvay’s Process:
Ammonia recovery yield is controlled according to the permitted ammonia concentration in the released liquid. The lower the permitted value, the higher the quantity of stripping steam and therefore the global energy consumption, and the higher the cost of the ammonia recovery. This control can only be applied to a theoretical minimum ammonia level. After cooling and condensation of steam, the gaseous phase containing recovered CO2 and NH3 is returned to the absorption area for reuse.
The liquid phase coming out from distillation unit contains: unreacted sodium chloride, calcium chloride resulting from reaction with NH4Cl, solid matter that is derived primarily from the original limestone and finally, small quantity in excess of lime that can ensure a total decomposition of NH4Cl. This liquid called “DS-liquid” or “Distiller Blow Off“will be treated in different ways depending on the particular site and processes used.
To be Contd..
