WO2024251383A1 - Brennerrohr, brenner, schmelzofen, verfahren zur herstellung eines brennerrohrs, verfahren zum schmelzen eines schmelzguts sowie verwendung eines keramischen werkstoffs - Google Patents
Brennerrohr, brenner, schmelzofen, verfahren zur herstellung eines brennerrohrs, verfahren zum schmelzen eines schmelzguts sowie verwendung eines keramischen werkstoffs Download PDFInfo
- Publication number
- WO2024251383A1 WO2024251383A1 PCT/EP2023/080814 EP2023080814W WO2024251383A1 WO 2024251383 A1 WO2024251383 A1 WO 2024251383A1 EP 2023080814 W EP2023080814 W EP 2023080814W WO 2024251383 A1 WO2024251383 A1 WO 2024251383A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- burner
- burner tube
- melting
- hot gas
- gas stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/111—Fine ceramics
- C04B35/117—Composites
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/50—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds
- C04B35/505—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on rare-earth compounds based on yttrium oxide
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/007—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore distribution, e.g. inhomogeneous distribution of pores
- C04B38/0074—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof characterised by the pore distribution, e.g. inhomogeneous distribution of pores expressed as porosity percentage
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
- C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/02—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Electric arc furnaces ; Tank furnaces
- F27B3/10—Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27B3/20—Arrangements of heating devices
- F27B3/205—Burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D99/0035—Heating indirectly through a radiant surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/02—Shaft or like vertical or substantially vertical furnaces with two or more shafts or chambers, e.g. multi-storey
- F27B1/04—Combinations or arrangements of shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
- F27D2099/004—Heating elements or systems using burners directed upon the charge, e.g. vertically
Definitions
- the invention relates to a burner tube for a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material, wherein the burner tube is designed at least to align the hot gas stream in the direction of the melting material.
- the invention further relates to a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material.
- the invention further relates to a melting furnace for melting metal, preferably non-ferrous metal, as melting material.
- the invention further relates to a method for producing a burner tube for a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material, wherein the burner tube is designed at least to align the hot gas stream in the direction of the melting material.
- the invention further relates to a method for melting metal, preferably non-ferrous metal, as melting material by means of a melting furnace, wherein a hot gas stream is formed by means of a burner of the melting furnace, wherein the hot gas stream is directed by means of a burner tube of the burner in the direction of the melting material, wherein the melting material is melted by the hot gas flow.
- the invention relates to a use of a ceramic material for producing a burner tube for a burner for forming a hot gas flow for melting metal, preferably non-ferrous metal, as melting material, wherein the burner tube is designed at least to align the hot gas flow in the direction of the melting material.
- a burner tube of the type described at the outset is known, for example, from WO 2021/170652 Al.
- a component of a burner of a melting furnace intended to form a hot gas flow for melting metal preferably non-ferrous metal such as aluminum or the like, as melting material, it serves in particular to align the hot gas flow in the direction of the melting material.
- a frequently highly inhomogeneous temperature distribution occurs in the burner tube with a high temperature gradient, in particular in a longitudinal direction of the burner tube, in view of which a material of the burner tube, which is typically a glass, a glass ceramic or a pure or monolithic ceramic material, regularly fails, which significantly reduces the service life of the burner tube. Therefore, melting a melting material is disadvantageously cost-intensive.
- the present invention is therefore based on the object of proposing a burner tube, a burner, a melting furnace, a method for producing a burner tube, a method for melting a melting material and a use of a ceramic material which enables cost-effective melting of metal, preferably non-ferrous metal, as melting material.
- Claim 1 a burner with the features of claim 8, a Melting furnace with the features of claim 13, a method for producing a burner tube with the features of claim 14, a method for melting a melting material with the features of claim 17 and a use of a ceramic material with the features of claim 19 are solved.
- the burner tube according to the invention for a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material is designed at least to align the hot gas stream in the direction of the melting material, wherein the burner tube is made of an oxide-ceramic fiber composite material.
- the burner tube for a burner for forming a hot gas flow for melting metal preferably non-ferrous metal such as aluminum or the like, as melting material is designed or provided at least for aligning or guiding the hot gas flow in the direction of the melting material.
- a melting temperature of the metal or non-ferrous metal can preferably be less than 1000 °C.
- the burner tube is made of an oxide-ceramic fiber composite material (Oxide Fiber Composite), i.e. a composite material comprising oxide-ceramic fibers and an oxide-ceramic matrix.
- Oxide Fiber Composite a composite material comprising oxide-ceramic fibers and an oxide-ceramic matrix.
- this material advantageously has a comparatively high thermal strength, in particular resistance to temperature changes or thermal shock, so that the burner tube made of this material is also resistant in the face of a highly inhomogeneous temperature distribution in the burner tube with a high temperature gradient, in particular axially or in a longitudinal direction of the burner tube, in particular despite a thermal expansion coefficient of the oxide-ceramic fiber composite material, which is typically 4 ppm/K to 10 ppm/K.
- the service life of the burner tube can be increased considerably, which enables advantageously cost-effective melting of metal, preferably non-ferrous metal, as melting material.
- a further advantage of forming the burner tube from the oxide-ceramic fiber composite material results from a comparatively low thermal conductivity of ⁇ 10 W/(m K) of this material, as a result of which heating of the area surrounding the burner tube is avoided. A slow preheating cycle before operating a burner comprising the burner tube or a melting furnace comprising the burner is therefore not necessary.
- insulation or coating of this material or the burner tube can generally be dispensed with when producing the burner tube. Both lead to an advantageous reduction in operating costs or manufacturing costs.
- the oxide-ceramic fiber composite material also has excellent corrosion and oxidation resistance.
- the oxide-ceramic fiber composite material also has a comparatively high electromagnetic transparency, so that the burner tube can be used for a particularly advantageous embodiment of a burner, which is described further below.
- the oxide-ceramic fiber composite material or the burner tube can have a coating or be coated.
- a coating can be useful for further functionalization, for example if additional sealing and/or improved gas flow and/or improved electrical conductivity and/or adapted corrosion protection is desired. Proven coating processes from the state of the art can be used to form the coating.
- the coating can be a metallic and/or ceramic coating.
- the burner tube may have a gas inlet and a gas outlet.
- a gas or a gas stream can be introduced into the burner tube via the gas inlet introduced, while the gas or the gas stream or the hot gas stream can be discharged from the burner tube via the gas outlet.
- the burner tube can have a first opening forming the gas inlet at a first end of the burner tube and a second opening forming the gas outlet at a second end of the burner tube, so that the burner tube can be designed so that gas or a gas stream can flow through it along a length of the burner tube.
- the burner tube can advantageously have a straight or linear course.
- the burner tube which can form a flow guide element of a burner, can then be arranged or aligned in such a way that the hot gas stream that can be formed by means of the burner or a heating device of the burner can be aligned or guided in the direction of the melting material.
- An inner side of the burner tube can be structured in order to influence the guidance of the gas flow.
- the burner tube can also have several gas inlets and gas inlets.
- the oxide-ceramic fiber composite material i.e. the oxide-ceramic fibers and/or the oxide-ceramic matrix, can advantageously comprise an oxide of aluminum and/or zirconium and/or silicon and/or yttrium.
- the oxide-ceramic fiber composite material can therefore comprise aluminum oxide or aluminum(HI) oxide and/or zirconium oxide or zirconium(IV) oxide or zirconium dioxide and/or silicon oxide or silicon dioxide and/or yttrium oxide or yttrium(HI) oxide.
- the use of other oxides is conceivable.
- the oxide-ceramic fiber composite material can advantageously have an open porosity of 20% to 50% in order to achieve optimized mechanical and thermal strength. Despite the open porosity, the tightness of the oxide-ceramic fiber composite material is sufficient to align and guide the hot gas flow. If a higher tightness is desired, an increased seal can be used.
- the coating can comprise ceramic and/or metallic layers.
- the oxide-ceramic fiber composite material can have a fiber volume fraction of 20% to 50% in order to obtain optimized wetting of the fibers by the matrix, whereby the mechanical or thermal strength can be further increased.
- the burner tube can be designed to be stable at least in view of a temperature distribution in the burner tube in which an axial temperature gradient is up to 1 °C/mm, preferably 1.5 °C/mm, particularly preferably 2 °C/mm.
- the burner tube can then be designed to be stable at least in view of a heating of the burner tube or a temperature distribution in the burner tube in which a temperature gradient or temperature difference based on a longitudinal axis of the burner tube or over the length is up to 500 °C, preferably 900 °C, particularly preferably 1300 °C.
- a temperature in the burner tube along the longitudinal axis from a first end of the burner tube to a second end of the burner tube can increase from 15 °C to 1300 °C.
- the burner tube can be designed to be stable at least in view of a temperature distribution in the burner tube in which a radial temperature gradient is up to 10 °C/mm, preferably 20 °C/mm, particularly preferably 25 °C/mm, very particularly preferably 50 °C/mm.
- the burner tube can then in particular at least be designed to be resistant to heating of the burner tube or a temperature distribution in the burner tube in which a temperature gradient or temperature difference across a wall thickness of the burner tube is up to 500 °C, preferably 900 °C, particularly preferably 1300 °C.
- the burner tube can have a length of > 500 mm and/or a diameter or outer diameter of > 20 mm and/or a wall thickness of ⁇ 50 mm, preferably ⁇ 10 mm, particularly preferably ⁇ 3 mm.
- the length can be 500 mm to 1500 mm and/or the diameter 20 mm to 200 mm and/or the wall thickness 1 mm to 5 mm.
- the outer diameter and/or inner diameter of the burner tube may vary along its length.
- the burner tube may have a circular cross-sectional shape or any other cross-sectional shape.
- the burner tube can be made of one or more parts.
- the burner according to the invention for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material comprises at least one burner tube according to the invention.
- the burner tube can form a flow guide element of the burner.
- the burner can comprise a plurality of, in particular two or three, burner tubes or flow guide elements.
- the burner can comprise a heating device, preferably electrically operated, for forming the hot gas stream.
- the burner can form the hot gas stream (Ultra High Temperature Thermo Jet) by heating a gas or gas stream that can be fed to the burner using the heating device. If the heating device is electrically operated, green electricity can advantageously be used to operate it, so that the burner can be operated in an essentially CO2-neutral manner, in contrast to natural gas burners, for example.
- the heat-carrying gas can be freely selected and is free of impurities, which leads to a high quality melt. Nitrogen or a noble gas, such as argon, can preferably be used as the gas. A gas mixture can also be used.
- the heating device can be designed as a plasma generation device for generating a plasma.
- the burner can be connected to an electrical power supply and also to a first supply for a plasma gas, by means of which the plasma can be formed. Furthermore, the burner can be connected to a second supply for the gas or the gas stream, from which the hot gas stream can be formed by means of the plasma.
- the heating device can be designed as an inductive heating device.
- the burner can be connected to an electrical power supply and also, in particular via the gas inlet, to a supply for the gas or gas stream from which the gas is heated by means of the inductive heating device.
- the hot gas flow can be formed by heating or igniting the gas or gas stream.
- the inductive heating device can advantageously have an induction coil arranged on the outside of the burner tube and an inductively heatable heating element, preferably made of a metal, preferably refractory metal, arranged in the burner tube, wherein the heating element can have channels through which gas can flow.
- the induction coil can be arranged at least in sections or in a heating section of the burner tube, on the outside or on the outer circumference of the burner tube, preferably surrounding the burner tube.
- the burner tube can also serve as a carrier for the heating element.
- the heating element can be arranged in the burner tube or in an interior of the burner tube, in particular in the area of the heating section.
- the gas or the gas flow can enter the burner tube or the interior of the burner tube through the first opening or the gas inlet and be heated in the burner tube or interior in an area of the heating section.
- heat can be transferred from the heating element heated by electrical currents induced in the heating element to the gas or gas stream.
- the heated gas or gas stream can then leave the burner tube as hot gas or hot gas stream through the second opening or gas outlet.
- This particularly advantageous embodiment of the burner is made possible by the aforementioned comparatively high electromagnetic transparency of the oxide-ceramic fiber composite material used to form the burner tube. Contactless heating of any type of heating element is thus possible. This means that electrical connection cables or a fuel supply are not necessary. Heat does not have to be supplied via a wall of the combustion tube. Instead, heat is transferred directly to the gas or gas stream.
- the heating element can form the channels.
- the channels can extend in the longitudinal direction.
- the channels can have a straight or linear course in order to achieve a particularly straight hot gas flow.
- the channels can also have a helical or winding course in order to achieve optimized heating of the gas flow.
- the heating element can be obtained by twisting tubes, preferably made of the metal or refractory metal, which can form the channels.
- Heat insulation of the burner or burner tube can be provided between the burner tube and the induction coil, which can be, for example, a coating or a ceramic fiber fleece.
- the melting furnace according to the invention for melting metal, preferably non-ferrous metal, as melting material comprises a burner according to the invention.
- the melting furnace can be an otherwise known melting furnace with an unchanged configuration.
- the melting furnace can be a shaft furnace, hearth furnace or crucible furnace.
- the melting furnace may comprise a container for receiving the molten melt, which may be a melting tank or a crucible.
- the container may be arranged in the melting furnace.
- the burner comprises the plasma generation device as a heating device
- the burner can be arranged on the melting furnace to form a plasma in the form of a free gas torch and to transfer heat by radiation to the melting material.
- the burner can thus be designed, dimensioned, arranged and/or aligned such that the plasma formed is arranged at a distance from the metallic melting material and the hot gas flow can be formed by means of the plasma, which is aligned in the direction of the melting material.
- the plasma formed therefore never comes into direct contact with the unmelted melting material or the molten melting material or a melt of the melting material. This also makes it possible to avoid the use of an electrode that contacts the melting material or the melt, since no such electrode should be present.
- the burner tube for a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material, wherein the burner tube is or will be formed at least for aligning the hot gas stream in the direction of the melting material, the burner tube is formed from an oxide-ceramic fiber composite material.
- the use of the oxide-ceramic fiber composite material in the manufacture of the burner tube creates a comparatively greater flexibility with regard to possible geometric designs of the burner tube.
- the burner tube can be manufactured using a winding process and/or braiding process, by means of which a wide variety of geometric designs can be flexibly produced in a simple manner.
- a geometry or a cross-sectional shape of the burner tube can be determined very easily by a geometry or cross-sectional shape of a winding core.
- a material thickness or the wall thickness can be determined very easily by a number of layers or windings arranged one above the other. It is also possible to manufacture the burner tube from ceramic fiber fabrics.
- fibers of the oxide-ceramic fiber composite material can be oriented at an angle of 25° to 65°, preferably 45°, to a longitudinal axis of the burner tube.
- a hot gas stream is formed by means of a burner of the melting furnace, wherein the hot gas stream is directed in the direction of the melting material by means of at least one burner tube of the burner, wherein the melting material is melted by the hot gas stream, wherein the burner tube is formed from an oxide-ceramic fiber composite material.
- a gas stream can be introduced into the burner tube via a gas inlet of the burner tube, wherein the gas stream can be heated to form the hot gas stream by means of a preferably inductive heating device of the burner in the burner tube, wherein the hot gas stream is Gas outlet of the burner tube can be discharged from the burner tube.
- an oxide-ceramic fiber composite material is used as a ceramic material for producing a burner tube for a burner for forming a hot gas stream for melting metal, preferably non-ferrous metal, as melting material, wherein the burner tube is designed at least to align the hot gas stream in the direction of the melting material.
- Fig. 1 is a perspective view of a burner
- Fig. 2 a is a partial view of a radiator from the front
- Fig. 2b is a partial view of the radiator from one side
- Fig. 3 is a sectional view of a melting furnace.
- Fig. 1 shows a burner 10 which comprises a burner tube 11 made of an oxide-ceramic fiber composite material.
- a heating section 12 of the burner tube 11 an induction coil 13 of an inductive heating device 16 of the burner 10 is arranged on the outer circumference of the burner tube 11, surrounding the burner tube 11.
- an inductively heatable heating element 20 of the inductive heating device 16 made of a refractory metal is arranged in an interior of the burner tube 11 (not shown here) in a region of the heating section 12.
- the burner tube 11 is designed to allow gas to flow through or to allow a gas or gas stream to flow through.
- the gas flow can enter the interior of the burner tube 11 in a flow direction indicated by an arrow 15 through a first opening 14 of the burner tube 11, which forms a gas inlet and is located at one end of the burner tube 11.
- the gas flow in the interior in the area of the heating section 12 can be heated by means of the inductive heating device 16.
- the gas or gas flow flows through channels 21 of the heating element 20, heat can be transferred from the heating element 20, which is heated by electrical currents induced in the heating element 20 by means of the induction coil 13, to the gas or gas flow.
- This forms a hot gas flow which can leave the burner tube 11 again through a second opening 17 of the burner tube 11, which forms a gas outlet and is located at the other end of the burner tube 11.
- a directed hot gas flow can therefore be formed by means of the burner 10.
- a flow direction of the hot gas flow is indicated by an arrow 18.
- the burner tube 11 has a straight course.
- the first opening 14 is therefore opposite the second opening 17.
- a heat insulation 19 of the burner 11 is arranged between the induction coil 13 and the burner tube 11.
- FIG. 2a-b shows sections of a heating element 22, which is made by twisting of refractory metal formed tubes 23, which form channels 24.
- the channels 24 have a helical course.
- Fig. 2 shows a melting furnace 25, which comprises a housing 26 made of a thermally insulating material, in which an inclined melting platform 27 of the melting furnace 25 is provided.
- An unmelted melting material 28 can be arranged on the melting platform 27.
- a burner 30 of the melting furnace 25 is arranged on a housing wall 29 at a distance from the melting material 28, which is designed to form a hot gas flow directed at the melting material 28.
- the burner 30 comprises at least one burner tube (not shown here). Under the influence of the hot gas flow, the melting material 28 can be melted, wherein the molten melting material can be received in a container 31 of the melting furnace 25 designed as a crucible.
- Hot exhaust gas can be removed from the melting furnace 25 via an exhaust 32 of the melting furnace 25.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Furnace Details (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380099266.3A CN121285642A (zh) | 2023-06-09 | 2023-11-06 | 燃烧器管、燃烧器、熔化炉、用于生产燃烧器管的方法、用于熔化待熔化材料的方法和陶瓷材料的用途 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023115142.8 | 2023-06-09 | ||
| DE102023115142 | 2023-06-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251383A1 true WO2024251383A1 (de) | 2024-12-12 |
Family
ID=88731296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/080814 Pending WO2024251383A1 (de) | 2023-06-09 | 2023-11-06 | Brennerrohr, brenner, schmelzofen, verfahren zur herstellung eines brennerrohrs, verfahren zum schmelzen eines schmelzguts sowie verwendung eines keramischen werkstoffs |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN121285642A (de) |
| WO (1) | WO2024251383A1 (de) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0204652A1 (de) * | 1985-04-19 | 1986-12-10 | W. STRIKFELDT & KOCH GmbH | Schachtschmelzofen zum Schmelzen von Metallen |
| EP0382674A2 (de) * | 1989-02-06 | 1990-08-16 | Carrier Corporation | Verfahren zur Herstellung eines Infrarotbrenners |
| US5447666A (en) * | 1992-05-20 | 1995-09-05 | Canadian Gas Research Institute | Method of forming radiant fiber burner |
| EP1227071A2 (de) * | 2001-01-25 | 2002-07-31 | Hyper-Therm, Inc. | Gekühlte Raketenbrennkammer aus Keramik |
| DE102005027561A1 (de) * | 2005-06-14 | 2006-12-21 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Einstellung des Faservolumengehaltes in oxidkeramischen Faser-Verbundwerkstoffen |
| DE102019116844A1 (de) * | 2019-06-21 | 2020-12-24 | Schunk Kohlenstofftechnik Gmbh | Einrichtung zur Entnahme und Abgabe einer Schmelze sowie Verfahren zum Herstellen der Einrichtung |
| WO2021170652A1 (de) | 2020-02-26 | 2021-09-02 | Technische Universität Bergakademie Freiberg | Vorrichtung zum schmelzen von metallen |
-
2023
- 2023-11-06 WO PCT/EP2023/080814 patent/WO2024251383A1/de active Pending
- 2023-11-06 CN CN202380099266.3A patent/CN121285642A/zh active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0204652A1 (de) * | 1985-04-19 | 1986-12-10 | W. STRIKFELDT & KOCH GmbH | Schachtschmelzofen zum Schmelzen von Metallen |
| EP0382674A2 (de) * | 1989-02-06 | 1990-08-16 | Carrier Corporation | Verfahren zur Herstellung eines Infrarotbrenners |
| US5447666A (en) * | 1992-05-20 | 1995-09-05 | Canadian Gas Research Institute | Method of forming radiant fiber burner |
| EP1227071A2 (de) * | 2001-01-25 | 2002-07-31 | Hyper-Therm, Inc. | Gekühlte Raketenbrennkammer aus Keramik |
| DE102005027561A1 (de) * | 2005-06-14 | 2006-12-21 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Einstellung des Faservolumengehaltes in oxidkeramischen Faser-Verbundwerkstoffen |
| DE102019116844A1 (de) * | 2019-06-21 | 2020-12-24 | Schunk Kohlenstofftechnik Gmbh | Einrichtung zur Entnahme und Abgabe einer Schmelze sowie Verfahren zum Herstellen der Einrichtung |
| WO2021170652A1 (de) | 2020-02-26 | 2021-09-02 | Technische Universität Bergakademie Freiberg | Vorrichtung zum schmelzen von metallen |
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|---|---|
| CN121285642A (zh) | 2026-01-06 |
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