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 TABLE 4-3-17C
Emission Control Facilities and Equipment for Municipal Incinerators
Item
Description
Settling
A large chamber usually located immediately after combustion
chamber
chamber for removal of large fly ash particles and as
pretreatment operation for subsequent removal processes.
Baffled
Baffles constructed of brick or metal that can be operated in
collectors
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.
Scrubber
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.
Cyclone
Dry separation of fly ash particles by means of centrifugal
separator
action in which particles are thrown or impinged against walls
of collector.
Electrostatic
Fly ash particles are charged by means of an electrode.
precipitator
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.
Fabric filter
Combustion gases are filtered through filter bags made of
various materials.
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