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US 2017/0038064 A1Published application
Down-fired burner with a perforated flame holder
AssigneeClearsign Combustion Corporation
InventorsJOSEPH COLANNINO, DOUGLAS W. KARKOW, IGOR A. KRICHTAFOVITCH, CHRISTOPHER A. WIKLOF
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Abstract
A down-fired flame burner includes a flame holder positioned below the burner. The flame holder includes a plurality of perforations that collectively confine a combustion reaction of the burner to the flame holder.
Claims45
A down-fired burner comprising:
- a down-fired fuel nozzle configured to output fuel in a downward direction;
- an oxidant source configured to output an oxidant;
- and
- a flame holder positioned below the down-fired fuel nozzle, the flame holder including:
- an input surface facing the down-fired fuel nozzle;
- an output surface opposite the fuel nozzle;
- 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 and oxidant within the perforations.
5 more elements
A method comprising:
- heating a flame holder positioned within a combustion volume and having a plurality of perforations each extending from a top surface of the flame holder to a bottom surface of the flame holder;
- outputting fuel from a first nozzle in a downward direction onto a top surface of the flame holder;
- introducing an oxidant into the combustion volume;
- igniting a combustion reaction of the fuel and oxidant in the plurality of perforations;
- and
- containing the combustion reaction of the fuel and oxidant substantially in the perforations in the flame holder.
3 more elements
A system comprising:
- a plurality of downward facing fuel nozzles each of which is configured to output a fuel in a downward direction;
- one or more oxidant sources configured to output oxidant;
- a plurality of flame holders each of which is positioned below a respective downward facing fuel nozzle, each flame holder including:
- a top surface;
- a bottom surface;
- and
- a plurality of perforations between the top and bottom surfaces, the flame holders being configured to confine a majority of a combustion reaction of the fuel and oxidant within the perforations;
- and
- a plurality of tubes, each of which is positioned adjacent to a respective flame holder and to output a reaction product of a reaction between a reactant and a catalyst within the tube.
6 more elements
Dependencies are inferred from the claim text.