Back to results
US 11,186,510 B2Granted
Submerged combustion burners, submerged combustion glass melters including the burners, and methods of use
AssigneeJohns Manville
InventorsJohn Wayne Baker, Aaron Morgan Huber
Life of this patent
Estimating the term…
Abstract
Submerged combustion burners having improved fuel and oxidant mixing characteristics. Submerged combustion melters including the burners. Methods of using submerged combustion melters to melt glass-forming materials and produce molten glass.
Claims36
A combustion burner comprising:
- an inner conduit having inlet and exit ends;
- and
- an outer conduit having inlet and outlet ends substantially juxtaposed to the inlet and exit ends of the inner conduit, with the proviso that the outer conduit exit end extends beyond the exit end of the inner conduit by a length to create a fuel and oxidant mixing region downstream of the inner conduit exit end, the outer conduit substantially concentric with the inner conduit;
- wherein the inner conduit exit ends comprises a non-circular circumferential shape and the outer conduit exit end comprises a circular circumferential shape to increase the interfacial surface area of contact between the fuel and the oxidant as they meet in the mixing region, wherein the increase is relative to circular cylindrical inner and outer conduits wherein the mixing region maintains a constant perimeter, wherein the exit end of the outer conduit defines the exit end of the burner;
- and
- wherein at least one surface selected from the group consisting of an inner surface of the inner conduit, an external surface of the inner conduit, and an inner surface of the outer conduit comprises one or more eddy generators.
3 more elements
A combustion burner comprising:
- an inner conduit having inlet and exit ends;
- and
- an outer conduit having inlet and outlet ends substantially juxtaposed to the inlet and exit ends of the inner conduit, with the proviso that the outer conduit exit end extends beyond the exit end of the inner conduit by a length to create a fuel and oxidant mixing region downstream of the inner conduit exit end, the outer conduit substantially concentric with the inner conduit;
- wherein at least one of the inner and outer conduit exit ends comprises a non-circular circumferential shape to increase the interfacial surface area of contact between the fuel and the oxidant as they meet in the mixing region, wherein the increase is relative to circular cylindrical inner and outer conduits, wherein the inner conduit is helical at least for a length equal to three inner conduit diameters from the inner conduit exit end.
1 more element
A combustion burner comprising:
- an inner conduit having inlet and exit ends;
- and
- an outer conduit having inlet and outlet ends substantially juxtaposed to the inlet and exit ends of the inner conduit, with the proviso that the outer conduit exit end extends beyond the exit end of the inner conduit by a length to create a fuel and oxidant mixing region downstream of the inner conduit exit end, the outer conduit substantially concentric with the inner conduit;
- wherein at least one of the inner and outer conduit exit ends comprises a non-circular circumferential shape to increase the interfacial surface area of contact between the fuel and the oxidant as they meet in the mixing region, wherein the increase is relative to circular cylindrical inner and outer conduits, wherein the outer conduit is helical at least for a length equal to three outer conduit diameters from the outer conduit exit end.
1 more element
A combustion burner comprising:
- an inner conduit having inlet and exit ends;
- and
- an outer conduit having inlet and outlet ends substantially juxtaposed to the inlet and exit ends of the inner conduit, with the proviso that the outer conduit exit end extends beyond the exit end of the inner conduit by a length to create a fuel and oxidant mixing region downstream of the inner conduit exit end, the outer conduit substantially concentric with the inner conduit;
- wherein the inner conduit exit end comprises a first non-circular circumferential shape and the outer conduit exit end comprises a second non-circular circumferential shape to increase the interfacial surface area of contact between the fuel and the oxidant as they meet in the mixing region, wherein the increase is relative to circular cylindrical inner and outer conduits;
- and
- wherein at least one surface selected from the group consisting of an inner surface of the inner conduit, an external surface of the inner conduit, and an inner surface of the outer conduit comprises one or more eddy generators.
3 more elements
Dependencies are inferred from the claim text.