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US 10,627,105 B2Granted
Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification
OwnerDaniel R Higgins, Eugene Sullivaninventors
Life of this patent
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Abstract
A ground supported single drum power boiler is described combining a refractory lined and insulated V-Cell floor; refractory lined and insulated combustion chamber; integrated fuel chutes configured to pre-dry wet solid fuel; top mounted fuel bin; internal chamber walls; configurable combustion air systems; and a back pass with after-burner ports and cross flow superheaters. The boiler can be configured in pre-assembled modules to minimize the field construction time and cost. An alternative embodiment is adaptable as a gasifier.
Claims22
An apparatus for burning solid fuel, comprising
- one or more cells for combusting the solid fuel in the lower portion of the apparatus, the one or more cells each having a V-shaped cross section and an opening at the bottom of the cell;
- a fuel supply for supplying solid fuel to the one or more cells;
- a moveable grate below the opening at the bottom of each of the one or more cells for removal of ash;
- one or more ports for injecting a gas into each of the one or more cells;
- and
- a front pass chamber above the cells, the front pass chamber including chamber wall screen composed of hollow tubes, the chamber wall screens not extending to the walls of the chamber so that gas can circulate between the chamber wall screens and the chamber walls.
3 more elements
Dependencies are inferred from the claim text.