# US 2010/0167219 A1 · Burner block for producing flat flame > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167219 A1 - Document ID: US20100167219A1 - Status: Published application - Kind: A1 - Application number: 12/401,040 - Filed: 2009-03-10 - Published: 2010-07-01 - Earliest claimed: 2008-12-31 - Assignees: Linde Aktiengesellschaft - Inventors: Andrew P. RICHARDSON - Web page: https://patentgrep.com/patent/US20100167219A1 ## CPC - F23D 14/58: characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration - F23D 1/00: Burners for combustion of pulverulent fuel - F23D 14/22: with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other - F23L 7/007: {Supplying oxygen or oxygen-enriched air} - F23D 2900/00013: with means for spreading the flame in a fan or fishtail shape over a melting bath - Y02E 20/34: Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery - F23D: BURNERS - F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A burner and process for a melter is provided which includes a combustion stream transitioning from an elliptical cross section to a circular cross section to provide a flat flame from the circular cross section for combustion in the melter. ## Claims ### Claim 1 A burner for a melter, comprising a combustion stream transitioning from an elliptical cross section to a circular cross section to provide a flat flame from the circular cross section for combustion in the melter. ### Claim 2 (depends on 1) The burner of claim 1, wherein the combustion stream comprises a fuel stream and an oxidant stream external to the fuel stream. ### Claim 3 (depends on 2) The burner of claim 2, wherein the oxidant stream has an initial elliptical cross section. ### Claim 4 (depends on 2) The burner of claim 2, wherein the fuel stream has a circular cross section and the oxidant stream has an elliptical cross section. ### Claim 5 (depends on 2) The burner of claim 2, wherein the fuel stream is displaceable vertically with respect to the oxidant stream for providing said streams wherein at least one is fuel-rich and the other is fuel-lean. ### Claim 6 (depends on 5) The burner of claim 5, comprising a fuel nozzle for the fuel stream. ### Claim 7 (depends on 2) The burner of claim 2, wherein the fuel stream comprises: a gaseous fuel selected from at least one of methane, natural gas, liquefied natural gas, propane, liquefied propane gas, butane, low BTU gases, town gas, producer gas and mixtures thereof. ### Claim 8 (depends on 2) The burner of claim 2, wherein the fuel stream comprises a liquid fuel selected from at least one of heavy fuel oil, medium fuel oil, light fuel oil, kerosene, diesel and mixtures thereof. ### Claim 9 (depends on 2) The burner of claim 2, wherein the fuel stream comprises a particulate solid fuel selected from at least one of coal, coke, petroleum coke, rubber, woodchips, sawdust, straw, biomass fuels and mixtures thereof suspended in a carrier gas stream selected from at least one of air, nitrogen, carbon dioxide and a gaseous fuel, the gaseous fuel selected from at least one of methane, natural gas, liquefied natural gas, propane, liquefied propane gas, butane, low BTU gases, town gas, producer gas and mixtures thereof. ### Claim 10 (depends on 2) The burner of claim 2, wherein the oxidant stream comprises an oxidant selected from at least one of oxygen-enriched air, non-pure oxygen and industrially pure oxygen. ### Claim 11 A burner comprising a combustion conduit having a first portion with an elliptical cross section; a second portion with a circular cross section; and a third portion interconnecting the first and second portions, the third portion constructed and arranged with a first end connect to the first portion and a second end connected to the second portion and transitioning in shape from an elliptical cross section at the first end to a circular cross section at the second end. ### Claim 12 A method of producing a flat flame for combustion in a melter, comprising providing a combustion stream having an elliptical cross section, and transforming said combustion stream to a circular cross section for providing a flame having a substantially flattened cross section for combustion in the melter. ### Claim 13 (depends on 12) The method of claim 12, wherein the combustion stream comprises a fuel stream and an oxidant stream external to the fuel stream. ### Claim 14 (depends on 13) The method of claim 13, further comprising displacing the fuel stream vertically with respect to the oxidant stream for providing said streams wherein at least one is fuel-rich and the other is fuel-lean. ### Claim 15 (depends on 13) The method of claim 13, further comprising surrounding the fuel stream with the oxidant stream. ### Claim 16 (depends on 13) The method of claim 13, wherein the fuel stream and the oxidant stream are co-axial. ### Claim 17 (depends on 13) The method of claim 13, wherein the fuel stream comprises: a gaseous fuel selected from at least one of methane, natural gas, liquefied natural gas, propane, liquefied propane gas, butane, low BTU gases, town gas, producer gas and mixtures thereof. ### Claim 18 (depends on 13) The method of claim 13, wherein the fuel stream comprises a liquid fuel selected from at least one of heavy fuel oil, medium fuel oil, light fuel oil, kerosene, diesel and mixtures thereof. ### Claim 19 (depends on 13) The method of claim 13, wherein the fuel stream comprises a particulate solid fuel selected from at least one of coal, coke, petroleum coke, rubber, woodchips, sawdust, straw, biomass fuels and mixtures thereof suspended in a carrier gas stream selected from at least one of air, nitrogen, carbon dioxide and a gaseous fuel, the gaseous fuel selected from at least one of methane, natural gas, liquefied natural gas, propane, liquefied propane gas, butane, low BTU gases, town gas, producer gas and mixtures thereof. ### Claim 20 (depends on 13) The method of claim 13, wherein the oxidant stream comprises an oxidant selected from at least one of oxygen-enriched air, non-pure oxygen and industrially pure oxygen.