Abstract: A burner (10) for heating a furnace (40) includes at least one oxidizing gas supply line (20) for supplying an oxidizing gas into the furnace, the at least one oxidizing gas supply line having a central oxidizing gas supply line (21) for supplying the oxidizing gas together with a first annular supply line (22) surrounding the central oxidizing gas supply line for supplying a first shroud gas flow (25) for the oxidizing gas, at least one fuel supply line (30) for supplying a fuel into the furnace, the at least one fuel supply line including a central fuel supply line (31) for supplying the fuel together with a second annular supply line (32) surrounding the central fuel supply line for supplying a second shroud gas flow (35) for the fuel, wherein the first shroud gas flow is initially sucked into itself and subsequently an atmosphere of the furnace is sucked into itself for a point of recirculation of the atmosphere to be away from a refractory wall of the furnace such that particles are reduced in the atmosp

Abstract: A method for heating a furnace (40) used for metal processing by combusting a fuel in the furnace (40) by supplying an oxidizing gas through an oxidizing gas supply line (20) into the furnace (40) and by supplying a fuel through a fuel supply line (30) into the furnace (40), wherein the oxidizing gas is supplied in form of a central oxidizing gas flow (24) together with a first shroud gas flow (25), and/or the fuel is supplied in form of a central fuel flow (34) together with a second shroud gas flow (35), and to a corresponding burner (10).

Abstract: The invention concerns a process for operating a fired furnace which is heated using a fuel gas stream and forming a combustion product stream, wherein heat of at least part of the combustion product stream is used in forming a steam stream. It is provided that at least a part of the steam stream is subjected to a high-temperature electrolysis to form a hydrogen-containing and an oxygen-containing material stream, and that at least a part of the hydrogen-containing material stream is used as the fuel gas stream. A corresponding arrangement is also the subject of the invention.

Abstract: A fluid injection element is disclosed, especially for a furnace or a burner of a furnace, having a pipe and a shroud element, such that the shroud element circumferentially surrounds an axial section of the pipe extending from an axial end of the pipe, such that at least one cavity is provided at the shroud element, and the at least one cavity is in fluid communication with an interior of the pipe and the at least one cavity extends to an opening at an axial end of the shroud element.

Abstract: A method for heating a furnace (40) used for metal processing by combusting a fuel in the furnace (40) by supplying an oxidizing gas through an oxidizing gas supply line (20) into the furnace (40) and by supplying a fuel through a fuel supply line (30) into the furnace (40), wherein the oxidizing gas is supplied in form of a central oxidizing gas flow (24) together with a first shroud gas flow (25), and/or the fuel is supplied in form of a central fuel flow (34) together with a second shroud gas flow (35), and to a corresponding burner (10).

Abstract: A burner for diluted combustion includes a fuel nozzle for supplying fuel to a combustion chamber, at least one air nozzle for supplying air to the combustion chamber, and at least one oxygen nozzle for supplying oxygen to the combustion chamber. The air nozzle and oxygen nozzle are spatially separated from each other.

Abstract: The present invention relates to a method of operating a converter, in particular a Peirce-Smith converter or a converter with similar design or mode of operation, and to an apparatus, for instance a plant, for carrying out the method. The method comprises the step of: loading the converter with a starting material comprising said metal, the metal in the starting material being chemically bound at least in part to at least one compound substance, in particular sulphur; maintaining a temperature within the converter interior space, which is above the melting temperature of the starting material; and supplying an oxygen-containing process gas into the converter interior space through injection nozzles arranged in the wall of the converter, the gas supplied through the injection nozzles comprising carbon dioxide, preferably very cold, technically pure carbon dioxide, as well as oxygen gas and/or air.

Abstract: A burner for diluted combustion includes a fuel nozzle for supplying fuel to a combustion chamber, at least one air nozzle for supplying air to the combustion chamber, and at least one oxygen nozzle for supplying oxygen to the combustion chamber. The air nozzle and oxygen nozzle are spatially separated from each other.

Abstract: The present invention relates to a method of operating a converter, in particular a Peirce-Smith converter or a converter with similar design or mode of operation, and to an apparatus, for instance a plant, for carrying out the method. The method comprises the step of: loading the converter with a starting material comprising said metal, the metal in the starting material being chemically bound at least in part to at least one compound substance, in particular sulphur; maintaining a temperature within the converter interior space, which is above the melting temperature of the starting material; and supplying an oxygen-containing process gas into the converter interior space through injection nozzles arranged in the wall of the converter, the gas supplied through the injection nozzles comprising carbon dioxide, preferably very cold, technically pure carbon dioxide, as well as oxygen gas and/or air.

Abstract: The invention relates to a process and an apparatus for low-NOx combustion with at least one burner (5) using fuel and oxidizing agent and/or furnace off-gases and/or carbon dioxide and/or steam. The low-NOx combustion according to the invention can be used in conventional melting and holding furnaces, in particular in aluminum holding furnaces or rotary drum furnaces and glass-melting furnaces, with the potential for considerable economies to be made.