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AssigneeMitsubishi Hitachi Power Systems Europe GmbH
InventorsAlfons Leisse, Sebastian Rehfeldt
Estimating the term…
One embodiment relates to a burner, comprising a fuel pipe, a fuel nozzle, at least one ignition and/or heat source and a pipe which conducts an oxygen-containing gas and/or recirculated flue gas, wherein the at least one ignition and/or heat source is arranged in the burner interior and is in the form of or comprises an electric heating and/or ignition device via which, exclusively by conversion of electrical current into heat energy, the amount of heat energy required within the burner for the initiation and continuation of the initial pyrolysis and ignition is generated and/or provided in the burner interior. A stabilizing ring with toothed ring may be a constituent part of the electric heating and/or ignition device arranged in the mouth region of the fuel nozzle.
A coal dust burner, comprising a fuel pipe, a fuel nozzle, at least one ignition or heat source and an additional pipe carrying an oxygen-containing gas, wherein the additional pipe is arranged concentrically and fully within the fuel pipe, wherein the at least one ignition or heat source is arranged in the coal dust burner interior and is formed as or comprises an electrical heating or ignition device, which generates or provides the amount of thermal energy required within the coal dust burner for the origination and execution of the initial pyrolysis and ignition in the coal dust burner interior exclusively by conversion of electric current into thermal energy, wherein a stabilizing ring with a toothed rim is a constituent part of the electrical heating or ignition device arranged in the mouth region of the fuel nozzle, and wherein the toothed stabilizing ring is arranged at a distance in front of a mouth opening of the additional pipe and arranged concentrically within the fuel pipe and at the center of the coal dust burner and has at least one heating wire through which electric current can flow.
A coal dust burner, comprising a fuel pipe, a fuel nozzle, at least one ignition or heat source and an additional pipe carrying a recirculated flue gas, wherein the additional pipe is arranged concentrically and fully within the fuel pipe, wherein the at least one ignition or heat source is arranged in the coal dust burner interior and is formed as or comprises an electrical heating or ignition device, which generates or provides the amount of thermal energy required within the coal dust burner for the origination and execution of the initial pyrolysis and ignition in the coal dust burner interior exclusively by conversion of electric current into thermal energy, wherein a stabilizing ring with a toothed rim is a constituent part of the electrical heating or ignition device arranged in the mouth region of the fuel nozzle, and wherein the toothed stabilizing ring is arranged at a distance in front of a mouth opening of the additional pipe and arranged concentrically within the fuel pipe and at the center of the coal dust burner and has at least one heating wire through which electric current can flow.
Dependencies are inferred from the claim text.