Method and combusting fuel and burner therefor
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsPaul Berhaut, Benoit Grand, Jacky Laurent, Jacques Mulon, Xavier Paubel, Patrick Recourt, Remi Pierre Tsiava
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Abstract
Method and burner for combusting a main fuel with a main oxidizer, whereby flows of the main fuel and the main oxidizer are injected via an injector end, comprising at least one metallic injector, said injector end being positioned in the upstream section of a main passage of a refractory block and whereby multiple jets are injected into the downstream section of the main passage to increase mixing and turbulence of the flows of the main fuel and the main oxidizer.
Claims15
A method of combusting fuel with oxidizer by means of a burner comprising a main injector assembly and a refractory burner block, whereby
- the main injector assembly terminates in an injection end which comprises at least one metallic injector,
- the block comprises a main passage bordered by a surrounding passage surface and extending along an axis from a cold face of the block to a hot face of the block opposite the cold face,
- the main passage defines a main injection direction X parallel to the axis and has an upstream section adjacent the cold face and a downstream section downstream of the upstream section and adjacent the hot face, said downstream section terminating in a main injection opening in the hot face of the block, and
- the injection end of the main injector assembly is positioned in the upstream section of the main passage so that the upstream section surrounds the at least one metallic injector,
- a flow of main fuel and flow of main oxidizer are injected according to main injection direction X towards and into the downstream section of the main passage by means of the injector end of the main injector assembly, characterized in that:
- the burner block further comprises multiple auxiliary passages terminating in the downstream section via n auxiliary openings in the surrounding surface of the main passage, whereby n≥2 and
- n jets of agitating gas are injected into the downstream section via the n auxiliary openings so as to interact with the flow of main fuel and the flow of main oxidizer and to increase turbulence and mixing thereof.
A burner comprising a metallic injector assembly and a refractory burner block,
- the injector assembly comprising an injection end and terminating in at least one metallic injector,
- the block comprising a main passage bordered by a surrounding surface and extending along an axis from a cold face of the block to a hot face of the block opposite the cold face,
- the main passage having a longitudinal axis, an upstream section adjacent the cold face and a downstream section adjacent the hot face and downstream of the upstream section, said downstream section terminating in a main injection opening in the hot face of the block,
- the injection end of the injector assembly being positioned in the upstream section of the main passage for injecting fuel and oxidizer towards and into the downstream section of the main passage said upstream section surrounding the at least one metallic injector,
- characterized in that:
- the burner block further comprises multiple auxiliary passages for transporting an agitating gas through the burner block and for injecting agitating gas jets into the downstream section of the main passage, the multiple auxiliary passages terminating in the downstream section of the passage through n auxiliary openings in the surrounding surface of the main passage, with n≥2, the multiple auxiliary passages being positioned and oriented so that, in operation, the n agitating gas jets injected via said n auxiliary openings interact with the main fuel and the main oxidizer injected by the injector assembly inside or downstream of the downstream section so as to generate increased turbulence and mixing of the main fuel with the main oxidizer.
Dependencies are inferred from the claim text.