Fly ash is captured and removed from the flue gas by electrostatic precipitators or fabric bag filters ( or sometimes both ) located at the outlet of the furnace and before the induced draft fan.
12.
Depending upon the grade of filtration required, typically filters will be arranged in two ( or more ) successive banks with a coarse-grade panel filter provided in front of a fine-grade bag filter, or other " final " filtration medium.
13.
A "'baghouse "'( BH, B / H ), bag filter ( BF ) or fabric filter ( FF ) is an air pollution control device that removes particulates out of air or gas released from commercial processes or combustion for electricity generation.
