Fuel feeding in cfbc boilers

In cfbc boiler fuel system like a very important funtion of in all process.

fuel feeding have two types one is over beding system and other one is under bed system.In over bed system coal is carried by conveyer belt from bunker to spreader that's time coal size approx 6-10 mm crushed.spreader distribute coal on the surface of bed uniformly.This type of fuel feeding system accept over size of fuel also.In compared with under feeding system this is more reliable.Now these days have some boiler have both feeding system.In under bed feeding coal size crushed approx 1-6 mm which is throw from conveyer to combustion panel.