The addition of the adsorbent takes place on the pneumatic way. The hydrated lime is taken out of a silo through a slide gate, a rotary valve and a screw conveyor. In an intermediate vessel the adsorbent will be weighted and blown into the ductwork. The dosing quantity can be adjusted by a frequency drive so that the necessary amount of adsorbent can be adapted.
Additive Dosing Systems can be placed under a Silo for smaller amounts of additive consumption. Additives can be Hydrated Lime (separation of HCL or HF), Activated Carbon (separation of dioxines) or a mixture of both (for small amount of dioxines).