Burner and Method of Operation
AssigneeAir Products and Chemicals, Inc.
InventorsMark Daniel D'Agostini, Anandkumar Makwana, Joshua E. Middaugh
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Abstract
The invention relates to particular burners, particularly to non-premixed or partially-premixed dual-fue burners with flexibility to change the heat input from the two fuels. Accordingly, said burners may be used in applications that needs operation of a burner in both single-fuel, and/or duel-fuel mode depending on furnace operation needs. The invention further relates to furnaces including the burners and methods of operating the burners.
Claims33
A burner (1), comprising
- a primary fuel conduit (20) comprising a primary fuel outlet (22) having a multiplicity of primary fuel exit holes (23) for supply of a primary fuel into an ignition chamber (25), wherein the wall surrounding the ignition chamber (25) comprises a plurality of bleed holes (28),
- a main oxidant conduit (30) for supply of a main oxidant, comprising an intermediate annular conduit (35) in a downstream portion (5) of the burner, which intermediate annular conduit (35) is configured to allow splitting of the main oxidant, such that a first portion is introduced into the ignition chamber (25) via the plurality of bleed holes (28) to mix with the primary fuel, and a second portion is introduced into a swirler section (33),
- a secondary fuel conduit (40) for supply of a secondary fuel, having a secondary fuel outlet (44) at its downstream end,
- wherein at least in the downstream portion (5) of the burner (1), in which primary fuel outlet (22), ignition chamber (25), intermediate annular conduit (35) and secondary fuel outlet (44) are present, the primary fuel conduit (20) is surrounded by the main oxidant conduit (30) and the secondary fuel conduit (40).
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The method of claim 30, wherein step i) comprises starting the main oxidant, the ignition source, and the primary fuel.
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Dependencies are inferred from the claim text.