Medium and small sized industrial pulverized-coal fired boiler

A system of industrial pulverized - coal fired boiler in small or medium size comprises stokehole pulverizing unit including high pressure air pump , baffle separator , coal supplying pipe , etc ; pulverized coal supplying unit including coal conveying pipe , blanking pipe and air supplying pipe ; pulverized coal combustion unit including central air pipe , primary air pipe , internal and external secondary air pipe ; boiler body including shell , heating stove , two and three returning pipes ; dust removal and desulfurization unit including cyclone separator , bag-duster, desulfurization tower, exhaust fan and chimney. Advantages: fine pulverized coal with grain size above 200 mesh, good low-temp. combustion effect and high heat efficiency