Method for treating fly ash in a fluidized bed boiler and...

Details Method for treating fly ash in a fluidized bed boiler and... Method for treating fly ash in a fluidized bed boiler and...

F - Mech Eng,Light,Heat,Weapons

23

J

F23J 15/00 (2006.01) F23G 5/30 (2006.01)

Patent

CA 2531736

A boiler plant comprises a fluidized bed boiler having a furnace (1), a flue gas duct (5) exiting the furnace, and a sorting device (8) which is arranged to separate a first fraction from the fly ash entering the flue gas duct, as well as a duct (9) for leading the first fraction away from the sorting device (8). The boiler plant comprises a separator (10) for separating a first fly ash fraction from the flue gases flowing in the duct (9). The sorting device (8) is arranged to separate into the duct (9) the flue gases from a flow entering the flue gas duct (5), as a flow that is more concentrated with respect to the fly ash and has a smaller gas volume than a flow that remains in the flue gas duct (5) after the sorting device (8). As to its hazard classification, the fly ash fraction obtained by the separator (10) corresponds to bottom ash.

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