Emission Control Facilities and Equipment for Municipal Incinerators
A large chamber usually located immediately after combustion
chamber for removal of large fly ash particles and as
pretreatment operation for subsequent removal processes.
Baffles constructed of brick or metal that can be operated in
wet or dry mode. Usually located after combustion chamber.
Particles 50 m or larger can be removed by impingement,
velocity reduction, or centrifugal action. Efficiency depends
on design and placement.
Fly ash is impacted on water droplets and subsequently
removed. Method of removing wetted fly ash depends on
equipment to be used and design of incinerator.
Dry separation of fly ash particles by means of centrifugal
action in which particles are thrown or impinged against walls
Fly ash particles are charged by means of an electrode.
Charged particles are removed on collecting surfaces placed in
an electrical field of high intensity. Once on the collecting
surface, particles lose charge and adhere lightly. Can be
moved by light tapping.
Combustion gases are filtered through filter bags made of