cfb boilers (cfb boiler) appears in the environment of national energy conservation,widely used in large-scale central heating and various enterprises heating system.However,some customers indicate that the blocking of coal feeding system may happen in the using of boiler cfb,which causes great economic losses. According to the analysis of China-boiler-manufacturer ZG , the main reason is that the fuel coal contains too much water, specific measures can refer to the following.
To prevent the internal coal feeding pipe’s blocking of cfb boiler and cfb boilers coal feeder When the coal entering the boiler cfb contains too much water, because the feeding pipe of coal feeder is long and thin, it is easy to block, we can conduct the 50mm*800mm transformation of the coal feeding pipe and coal feeder shell’s interface change the electric plug doors into the manual ones, the coal hopper’s mouth should be bigger and change the expansion joint into the single corrugated compensate and so on.
Improving the coal drop pipe of the cfb boilers cfb boiler, boiler cfb
The layout air locking rotary feeding valve should not be designed on the coal drop pipe,the air lock is enough,adopting the wind scantly enter the coal pipe, which can bear the flue gas sealing in furnace and reduce the coal blockage points. Other measures Coal bunker’s lining adopts micro-crystalline stone or stainless steel, Installing pick front in the coal bunker,the volume of raw coal bunker decreases properly,and so on.