Particle fuel diversion structure with dome-shaped cavity

Details Particle fuel diversion structure with dome-shaped cavity Particle fuel diversion structure with dome-shaped cavity

F - Mech Eng,Light,Heat,Weapons

23

G

110/37

F23G 7/00 (2006.01) F23C 9/00 (2006.01)

Patent

CA 1252340

ABSTRACT OF THE DISCLOSURE A particle fuel burning furnace has an upper combustion chamber for holding a pile of particle fuel and burning the same from the bottom thereof. The furnace also includes a lower combustion chamber for afterburning combustible gases given off by the burning of solid fuel in the upper chamber and replaceable refractory bricks containing a series of spaced apart vertically-extending passageways interconnecting the bottom of the upper chamber and the top of the lower chambers for communicating the combustible gases from the upper to the lower chamber. An improved particle fuel diversion structure in the furnace includes an elongated fuel diverter block having a recessed dome- shaped cavity formed therein and open at a bottom side thereof and spacer blocks disposing the diverter block in the upper chamber in spaced relationship above the bottom of the upper chamber and with its recessed cavity overlying the bricks containing the passageways. Furthermore, the bricks extend above the bottom of the upper chamber and into the recessed cavity of the diverter block. The diverter block coacts with the upper chamber bottom and the passageway-containing bricks to define a flow path from the upper chamber to the lower chamber which passes along the bottom of the upper chamber under the diverter block, upwardly into the recessed cavity of the diverter block, and then inwardly over the bricks and downwardly into the passageways therein. In such configuration, the flow path causes an increase in the dwell time of flow entrained particles in the upper chamber so as to promote combustion thereof before they reach the lower chamber.

495698

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