Process for burning fuel

A process for burning fuel comprising free hydrocarbons and/or fine-grained to dusty solid fuels, said process comprising the steps of creating a main jet of fuel having an approximately cylindrical shape as it extends in a first direct, accelerating the main jet to supersonic speeds, and then surrounding the main jet with several jets of a combustion-supporting gas oriented in a skewed manner relative to a central longitudinal axis of the main jet, said jets being blown helically into the main jet so that the oxygen-containing gases penetrate into the main jet, and providing an additional jet of oxygen-containing gas and introducing it centrally within the main jet so that the additional jet is annularly surrounded by the main jet.

A burner for carrying out a process of burning free hydrocarbon and fine-grained to dusty solid fuels, said burner comprising a first tube connected to a supply for oxygen-containing gas, said first tube terminating in a nozzle discharging a main jet of said gases, said nozzle having means for accelerating the main jet to supersonic speeds a second tube surrounding the first tube and forming an annular gap with the first tube, said second tube being connected to a supply of fuel, said annular gap having a plurality of discharge channels peripherally surrounding the first tube adjacent the nozzle thereof and forming individual fuel jets being skewed toward the first jet so that the individual fuel jets penetrate helically into the main jet.

A burner for carrying out a process for burning free hydrocarbons and fine-grained to dusty solid fuels, said burner comprising a combination of a first tube for forming a supply channel for fuel and terminating in a nozzle discharging a main jet of the fuel, said nozzle having means for accelerating the main jet to supersonic speeds, a second tube surrounding the first tube and forming an annular gap for supplying oxygen and oxygen-containing gases, said annular gap discharging through a plurality of discharge channels peripherally surrounding the first tube and constructed as nozzles to form individual jets, said nozzles being skewed toward the main jet with axial, radial and tangential components so that the gases discharged by the nozzles penetrate helically into the main jet.

A metallurgical vessel comprising a vessel having a wall with an opening, a supporting console arranged at the opening, a burner being pivotably fastened to the support console and projecting into the opening, said burner having a first tube for forming a supply channel for oxygen and/or oxygen-containing gas and terminating in a nozzle creating a main jet of said gases, said nozzle having means for accelerating the main jet to supersonic speeds, a second tube surrounding the first tube and forming an annular gap for supplying fuel, said annular gap having a plurality of discharge channels peripherally surrounding the first tube and forming nozzles for creating individual fuel jets, said nozzles being skewed with radial, axial and tangential components toward the main jet so that the fuel jets penetrate helically into said main jet.