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US 10,711,994 B2Granted
System, method and apparatus for solid fuel ignition
AssigneeGeneral Electric Technology GmbH
InventorsDragisa Ristic, Hans-Peter Schommer, Frank Kluger
Life of this patent
Estimating the term…
Abstract
An ignition system includes a pulverized fuel pipe receiving a mixture of pulverized fuel and primary air for injection into a combustion chamber for combustion, and an igniter received within the pulverized fuel pipe for igniting the mixture. The igniter is axially movable within the pulverized fuel pipe.
Claims15
An ignition system, comprising:
- a pulverized fuel pipe receiving a mixture of pulverized fuel and primary air for injection into a combustion chamber for combustion;
- an igniter received within the pulverized fuel pipe for igniting the mixture;
- and
- a plurality of angled projections formed on an inner wall of the pulverized fuel pipe, the angled projections being configured to divert at least a portion of the mixture into a flame of the igniter;
- wherein the igniter is axially movable within the pulverized fuel pipe;
- and
- wherein the plurality of angled projections are arranged in at least two rows, wherein the projections in one of the rows are radially offset from the projections in another of the rows.
4 more elements
An ignition system, comprising:
- a pulverized fuel pipe receiving a mixture of pulverized fuel and primary air for injection into a combustion chamber for combustion;
- an igniter received within the pulverized fuel pipe for igniting the mixture;
- and
- a pulverized fuel concentrator positioned within the pulverized fuel pipe adjacent an outlet end of the pulverized fuel pipe and defining an annular passageway between the pulverized fuel concentrator and the pulverized fuel pipe;
- wherein the igniter is axially movable within the pulverized fuel pipe;
- and
- wherein when the igniter is moved to a forward position adjacent to the pulverized fuel concentrator, the pulverized fuel concentrator, the igniter and the pulverized fuel pipe form a generally continuous annular gap extending from the igniter to the outlet.
4 more elements
A method for igniting a solid fuel, comprising the steps of:
- providing a mixture of pulverized fuel and primary air to a pulverized fuel pipe having an outlet end;
- igniting the mixture with an igniter received axially within the pulverized fuel pipe;
- and
- varying an ignition residence time of the mixture by axially moving the igniter within the pulverized fuel pipe to vary a distance of a forward end of the igniter with respect to the outlet end of the pulverized fuel pipe;
- wherein the pulverized fuel pipe includes a pulverized fuel concentrator positioned within the pulverized fuel pipe adjacent the outlet end and which defines an annular passageway between the pulverized fuel concentrator and the pulverized fuel pipe;
- and
- wherein the method further includes the step of moving the igniter to a forward position adjacent to the pulverized fuel concentrator to form a generally continuous annular gap extending from the igniter to the outlet.
4 more elements
Dependencies are inferred from the claim text.