Abstract

A device for providing a plasma, comprising at least one plasma-generating element with one inlet and one outlet for a gaseous fluid, wherein a first flow channel is arranged in the plasma-generating element, optionally a second flow channel which is arranged concentrically thereto and surrounds the first flow channel at least in sections, is arranged, the first flow channel being fluidically connected to a first connection for a gaseous fluid for forming a heated gas flow and/or a plasma flow, and the inlet of the plasma-generating element being fluidically connected to a conveying element, with which the gaseous fluid can be accelerated.

IPC Classes  ?

• H01J 37/32 - Gas-filled discharge tubes

IPC Classes  ?

• H01J 37/32 - Gas-filled discharge tubes
• H05H 1/30 - Plasma torches using applied electromagnetic fields, e.g. high-frequency or microwave energy
• H05H 1/46 - Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

IPC Classes  ?

• H05H 1/30 - Plasma torches using applied electromagnetic fields, e.g. high-frequency or microwave energy
• H05H 1/46 - Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

Abstract

The invention relates to an apparatus (1) for thermally treating a substance, comprising a treatment chamber (2), at least one device (5) for providing a plasma, and a hot-gas channel (6), wherein the hot-gas channel (6) is arranged or formed between the device (5) for providing a plasma and the treatment chamber (2) and has an inlet (7) for a hot-gas flow generated by the device (5) for providing a plasma, and an outlet (8) into the treatment chamber (2). The hot-gas channel (6) has at least one further outlet (8) for the hot-gas flow into the treatment chamber (2). The hot-gas channel (6) and/or the device (5) for providing a plasma may have at least one further inlet (7) for a further hot-gas flow.

IPC Classes  ?

• H05H 1/24 - Generating plasma
• H05H 1/26 - Plasma torches
• F27D 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

In the method, a device for forming a plasma is positioned on a furnace. Said device is connected to an electrical power supply and to a plasma gas supply. The device is designed, dimensioned, positioned and/or orientated in such a way that the plasma formed is positioned at a distance from the solid or a melting tank. A hot gas stream is formed using the plasma, and the melted product or a melting tank is heated exclusively by means of thermal energy from the hot gas stream and by emitted electromagnetic radiation. At least one chemical element and/or one chemical compound is/are introduced into the plasma and/or the hot gas stream, ions from said at least one chemical element and/or chemical compound being converted to an excited state by the heat of the plasma or of the hot gas stream, or at least one chemical reaction being initiated such that the proportion of electromagnetic radiation which is directed onto the melted product, having a wavelength of ≥ 575 nm, is increased by at least 10 % of the total spectrum of the electromagnetic radiation.

IPC Classes  ?

• C03B 5/02 - Melting in furnacesFurnaces so far as specially adapted for glass manufacture in electric furnaces
• C22B 4/00 - Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
• C22B 9/22 - Remelting metals with heating by wave energy or particle radiation
• C21B 13/12 - Making spongy iron or liquid steel, by direct processes in electric furnaces
• C21C 5/52 - Manufacture of steel in electric furnaces
• F27D 11/12 - Arrangement of elements for electric heating in or on furnaces with electromagnetic fields acting directly on the material being heated
• H05H 1/24 - Generating plasma

Abstract

The invention relates to a device (6) for providing a plasma, comprising at least one plasma-generating element (8) in which or on which at least one electric induction coil (10) and/or a magnetron is arranged and in which a first flow channel (11) and a second flow channel (12) that is concentric thereto are additionally arranged, wherein the second flow channel (12) at least partly surrounds the first flow channel (11), the first flow channel (11) is fluidically connected to a first connection (16) for a gaseous fluid in order to form a heated gas flow or plasma flow, and the second flow channel (12) is fluidically connected to a second connection (17) for a gaseous fluid in order to form a protective volume flow between the surface (14) of the plasma-generating element (8) and the heated gas flow or plasma flow.

IPC Classes  ?

• H05H 1/30 - Plasma torches using applied electromagnetic fields, e.g. high-frequency or microwave energy
• H01J 37/32 - Gas-filled discharge tubes
• H05H 1/46 - Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

Abstract

The invention relates to a device (6) for providing a plasma, comprising at least one plasma-generating element (8) with an inlet (46) and an outlet (47) for a gaseous fluid. The plasma-generating element (8) is equipped with a first flow channel (11) and optionally a second flow channel (12) that is concentric thereto and at least partly surrounds the first flow channel (11), wherein the first flow channel (11) is fluidically connected to a first connection (16) for a gaseous fluid in order to form a heated gas flow and/or a plasma flow, and the inlet (46) of the plasma-generating element (8) is fluidically connected to a conveyor element (34), by means of which the gaseous fluid can be accelerated.

IPC Classes  ?

• H05H 1/30 - Plasma torches using applied electromagnetic fields, e.g. high-frequency or microwave energy
• H05H 1/46 - Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

Abstract

The invention relates to an apparatus (1) for thermally treating a substance (2), in particular a solid, comprising a treatment chamber (5) and at least one device (6) for providing a plasma, wherein the treatment chamber (5) comprises an inlet (56) and an outlet (57) for a gaseous fluid, and wherein the outlet (57) of the treatment chamber (5) is fluidically connected to at least one heat exchanger (58), which has a heat storage element (61), wherein the heat exchanger (58) comprises an inlet (59) and an outlet (60) for the gaseous fluid.

IPC Classes  ?

• F27B 3/20 - Arrangements of heating devices
• F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
• F27D 19/00 - Arrangement of controlling devices
• F27D 99/00 - Subject matter not provided for in other groups of this subclass
• H05H 1/28 - Cooling arrangements
• H05H 1/46 - Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy