The invention relates to a
system and a method for efficiently and economically
processing the
coal ash and bottom
slag of
coal-fired units of power plants. At present, a pressing
system and a
processing method which can effectively guarantee the quality of uniformity of
coal ash do not exist. The
system is characterized in that: the system comprises a coarse ash
silo, a coarse ash
silo dust collector, coarse ash
silo level indicators, an ultrafine coal ash mill, a pneumatic coarse ash silo
gate valve, a lifter, an ash-milling
dust collector, a finished fine ash silo, a mill sampler, a coarse ash and fine ash separator, a mill ash trap, a mill divider, a
dust collector sampler, a raw ash silo and a secondary ash silo, the coarse ash silo is connected with a heated boiler
tail surface coal saver and an
air preheater, the coarse ash silo dust collector and the coarse ash silo level indicators are mounted on the coarse ash silo, the ultrafine coal ash mill is connected with a power
plant coal-fired unit pulverized coal furnace and the coarse ash silo, the pneumatic coarse ash silo
gate valve and the lifter are mounted between the coarse ash silo and the ultrafine coal ash mill, the ash-milling dust collector, the finished fine ash silo, the mill sampler and the coarse ash and fine ash separator are connected with the ultrafine coal ash mill, the mill ash trap is connected with the mill sampler, the mill divider is connected with the mill ash trap, and the dust collector sampler, the raw ash silo and the secondary ash silo are connected with a
power station coal-fired unit
electrostatic precipitator. The invention can effectively guarantee the quality and uniformity of coal ash.