The flue gas is then fed to a fabric filter, where
the reactions continue on the filter cake of ash and powders deposited
on the bags. Here, the solid products of the reactions (calciumbased
wastes, CBW) are captured and removed from the flue gas
stream. Part of the solids collected by the filter can be recycled
to the reactor feed, since they generally contain unreacted lime.
Eventually, CBW and ash are stored in a silo and sent to appropriate
disposal sites.