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US 8,707,876 B2Granted
Stepped floor for solid fuel boilers
OwnerDaniel Richard Higgins, Eugene Sullivaninventors
Life of this patent
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Abstract
A design and method of operation for the floor of solid fuel boilers is described. The combustion region includes a stepped-floor that improves combustion in the lower furnace. In some embodiments, the fuel is moved between the steps of the floor by a gas, rather than by mechanical means, and the fuel is moved from an upper to a lower step as it is burned. In some embodiments, the steps are fixed steps having a layer of a refractory material.
Claims9
A method for burning solid fuel in a solid fuel boiler comprising:
- directing solid fuel into the combustion chamber of the solid fuel boiler and onto a first fixed support surface;
- directing a gas toward the solid fuel on the first fixed support surface, the gas aiding in the combustion of the solid fuel on the first fixed support surface and moving at least a portion of the solid fuel from the first fixed support surface onto a second fixed support surface where that portion of fuel is further combusted, the horizontal plane of the second fixed support surface being vertically lower than the horizontal plane of the first fixed support surface, and
- determining when solid fuel is obstructing the gas flow and increasing the gas flow to remove the obstruction.
Dependencies are inferred from the claim text.