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US 11,305,302 B2Granted
Nozzle assembly for a solid fuel burner and method of operating a nozzle assembly for a solid fuel burner
AssigneeGeneral Electric Company
InventorsGregory Dunnu, Reinhard Gollnick, Wadim Pimenov, Jakob Heimann
Life of this patent
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Abstract
A nozzle tip for a pulverized solid fuel pipe nozzle of a pulverized solid fuel-fired furnace is provided. The nozzle tip includes a primary shroud having an inlet end and an outlet end, and an outlet at the outlet end for the passage of a pulverized solid fuel into the furnace. An area of the outlet is selectively adjustable to vary an exit velocity of the pulverized solid fuel from the nozzle tip.
Claims15
A nozzle tip for a pulverized solid fuel pipe nozzle of a pulverized solid fuel-fired furnace, the nozzle tip comprising:
- a primary shroud having an inlet end and an outlet end, and an outlet at the outlet end for the passage of a pulverized solid fuel into the furnace;
- a secondary shroud surrounding the primary shroud;
- and
- a passage intermediate the primary shroud and the secondary shroud for the passage of air;
- wherein an area of the outlet is selectively adjustable to vary an exit velocity of the pulverized solid fuel from the nozzle tip;
- and
- wherein the primary shroud and the secondary shroud are mechanically interconnected such that adjustment of a position of the primary shroud results in a simultaneous adjustment of a position of the secondary shroud.
4 more elements
A method of operating a burner, comprising the steps of:
- suppling a flow of fuel through at least one fuel nozzle assembly having a nozzle tip to a combustion chamber, the nozzle tip having a primary shroud for passage of the flow of fuel therethrough, and a secondary shroud surrounding the primary shroud, the primary shroud and the secondary shroud being mechanically interconnected and defining therebetween a passage for the passage of air;
- varying an exit velocity of the fuel from the nozzle tip in dependence upon at least one of a property of the fuel and/or an operational requirement of the burner;
- and
- adjusting a position of the primary shroud;
- wherein adjustment of the position of the primary shroud causes a simultaneous adjustment of a position of the secondary shroud as a result of the mechanical interconnection between the primary shroud and the secondary shroud.
2 more elements
Dependencies are inferred from the claim text.