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US 10,458,649 B2Granted
Horizontally fired burner with a perforated flame holder
AssigneeClearsign Combustion Corporation
InventorsDouglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Christopher A. Wiklof
Life of this patent
Estimating the term…
Abstract
A horizontally-fired flame burner includes a flame holder positioned laterally from the burner. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder.
Claims32
A horizontally-fired burner comprising:
- a horizontally-fired fuel nozzle configured to output, in a horizontal direction, a pure fuel jet selected to entrain oxidant;
- a flame holder positioned laterally from the horizontally-fired fuel nozzle, the flame holder including:
- an input surface facing the horizontally-fired fuel nozzle;
- an output surface opposite the flame holder;
- and
- a plurality of perforations extending from the input surface to the output surface and collectively configured to promote a combustion reaction of the fuel within the perforations;
- and
- a preheating mechanism configured to heat the flame holder prior to starting the combustion reaction;
- wherein the horizontally-fired fuel nozzle comprises an adjustable fuel nozzle;
- and
- wherein the preheating mechanism is configured to move the adjustable fuel nozzle closer to the flame holder during a preheating period and to retract the adjustable fuel nozzle away from the flame holder after the preheating period.
8 more elements
A method comprising:
- using a preheating mechanism configured for heating a flame holder having a plurality of perforations each extending from an input surface of the flame holder to an output surface of the flame holder to heat the flame holder prior to starting a combustion reaction;
- outputting pure fuel from a first nozzle in a horizontal direction, in a fuel jet selected to entrain oxidant, onto the input surface of the flame holder from an adjustable fuel nozzle;
- igniting the combustion reaction of the fuel in the plurality of perforations;
- containing the combustion reaction of the fuel substantially in the perforations in the flame holder;
- and
- moving the adjustable fuel nozzle closer to the flame holder during a preheating period and retracting the adjustable fuel nozzle away from the flame holder after the preheating period.
3 more elements
A system comprising:
- a horizontally facing fuel nozzle configured to output pure fuel in a horizontal direction, in a jet selected to entrain oxidant;
- a flame holder positioned laterally from the horizontally facing fuel nozzle, the flame holder including:
- an input surface;
- an output surface;
- and
- a plurality of perforations between the input and output surfaces, the flame holder being configured to confine a majority of a combustion reaction of the fuel within the perforations;
- and
- a preheating mechanism configured to heat the flame holder prior to starting the combustion reaction;
- wherein the horizontally-facing fuel nozzle comprises an adjustable fuel nozzle;
- and
- wherein the preheating mechanism is configured to move the adjustable fuel nozzle closer to the flame holder during a preheating period and to retract the adjustable fuel nozzle away from the flame holder after the preheating period.
8 more elements
Dependencies are inferred from the claim text.