Fluidized-Bed Boilers

Other commercial systems include cyclone boilers, fluidized-bed boilers, grate-based fiunaces, and fuel cells. 

Flame type C. Ball. Considerable swirl, >0.S. Hot reverse flow into center cold forward flow at sides. Secondary jet velocity >primary jet velocity. Intense mixing. Used for combustion chambers that are more or less cubical, such as stoker-flred boilers, fluidized beds, and Dutch ovens. 

---