US20150329931A1 - Method for storing discontinuously produced energy - Google Patents
Method for storing discontinuously produced energy Download PDFInfo
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- US20150329931A1 US20150329931A1 US14/428,280 US201314428280A US2015329931A1 US 20150329931 A1 US20150329931 A1 US 20150329931A1 US 201314428280 A US201314428280 A US 201314428280A US 2015329931 A1 US2015329931 A1 US 2015329931A1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/004—Making spongy iron or liquid steel, by direct processes in a continuous way by reduction from ores
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Definitions
- the invention relates to a method for storing discontinuously produced energy.
- regenerative energy includes not only energy from renewable resources, but also energy generated from hydroelectric power, sunlight, and wind. Frequently, renewable resources can be used to produce energy continuously, for example in biomass power plants or biogas production plants.
- the object of the present invention is to create a method for storing discontinuously produced energy.
- the goal is not to use discontinuously produced energy in its originally produced form, but rather to use the energy for producing an easily storable intermediate product and thus to incorporate the energy into this intermediate product, with the intermediate product being a product that is required all over the world.
- this intermediate product is produced and stored regardless of the demand for the intermediate product and then is supplied for further processing as needed. Since the production of the intermediate product requires large quantities of energy anyway, the energy consumption that would already occur in the production would be shifted in terms of time and location.
- metal for example, in particular steel
- the method according to the invention is suitable for all forms of industrial production in which a storable intermediate product is generated.
- the storage of the discontinuously produced energy in this case does not require a feeding back from a storage reservoir—of whatever type—into the original energy, but instead the original energy is used in a practical way and stored in the intermediate product and additional energy does not have to be expended in order to produce the intermediate product at the production site of the end product.
- FIG. 1 shows an overview of the method according to the invention in an exemplary embodiment (electric arc furnace);
- FIG. 2 shows an overview of the method according to the invention in a second exemplary embodiment (LD process);
- FIG. 3 schematically depicts the flows of materials and energy.
- the intermediate product is an intermediate product whose production requires an expenditure of energy that is quite high, in particular intermediate products for which a smelting process and/or a reduction process is required, which is in particular carried out using electricity, e.g. by means of an electric arc.
- this intermediate product can also be composed of iron directly reduced primarily from iron oxide carriers, e.g. in the form of a sponge iron or so-called hot briquetted iron (HBI).
- HBI hot briquetted iron
- Sponge irons in the form of HDRI, CDRI, and HBI usually undergo further processing in electric furnaces, which is extraordinarily energy-intensive.
- the direct reduction is carried out using hydrogen and carbon monoxide from methane and synthesis gas if necessary.
- MIDREX so-called MIDREX method
- This method also emits CO 2 .
- DE 198 53 747 C1 has disclosed a combined process for the direct reduction of fine ores in which the reduction is to be carried out with hydrogen or another reduction gas in a horizontal turbulence layer.
- WO 2011/018124 has disclosed methods and systems for producing storable and transportable carbon-based energy sources using carbon dioxide and using regenerative electrical energy and fossil fuels.
- a percentage of regeneratively produced methanol is prepared together with a percentage of methanol that is produced by means of non-regenerative electrical energy and/or by means of direct reduction and/or by means of partial oxidation and/or reforming.
- the intermediate product for the steel production is produced using a hot furnace and a subsequent LD process or using an electric arc furnace with regenerative energy and is stored in this way.
- a particular advantage is that the intermediate product produced by means of regenerative energy can be stored until it is processed further, which means that the method according to the invention permits a storage of regenerative energy.
- this very storage of regenerative energy has presented a very large problem since in particular, electrical energy that is generated from wind or sun depends on climatic conditions that are not always the same. Even hydroelectrically generated electrical energy is not always available. Often, the consumers are not in the same locations as the production of regenerative energy.
- This problem of storage and subsequent mobility of the stored energy is solved by means of the invention since the intermediate product produced according to the invention can be efficiently transported in small units and in any quantity to any location, for example by marine transport.
- the energy in the method according to the invention is not in fact stored in a form that is accessible to virtually anyone and for general use from the storage reservoir; but the global demand for certain intermediate products is so high that according to the invention, the intermediate product constitutes the energy storage for other forms of energy demand, e.g. providing retail electricity customers with electrical energy from other sources or other storage reservoirs, thus permitting better management and planning of the total energy balance.
- the method according to the invention can be used in regions of the world in which the raw material for the intermediate product and the corresponding discontinuously produced regenerative energy are present in the same location.
- An example of this can be the magnesia storage facilities for the production of fused magnesia (e.g. for use in the flame retardant industry) that exist, for example, in Canada or China and correspondingly, the use of hydroelectric power or wind energy or (China) solar energy.
- fused magnesia e.g. for use in the flame retardant industry
- hydroelectric power or wind energy or (China) solar energy in iron ores that are to be transformed into the corresponding intermediate product with direct reduction methods, such locations e.g.
- this electrical energy generated from wind, hydro, or solar energy is used to produce hydrogen from water by electrolysis.
- a direct reduction system is operated, which is used for reducing iron ores - which are likewise particularly preferably completely prepared with electrical energy produced in this way.
- the intermediate product obtained in this way in particular hot briquetted iron HBI, HDRI, or CDRI is an ideal way to store this regenerative energy, can be stored without restriction in large quantities, and is accessible via any form of transportation to a system for processing it further, particularly when it is needed there.
- this intermediate product can be produced at its production site—in large quantities that exceed the present requirement—when the corresponding electrical energy is available in sufficient quantity. If this energy is not available, then there are sufficient quantities of the intermediate product and thus of the energy in a stored form in order to be able to meet the need.
- the hydrogen from the regenerative processes can be used with carbon-containing or hydrogen-containing gas flows such as CH4, COG, synthesis gas etc., in a direct reduction system.
- the ratio of hydrogen from the regenerative processes to carbon-containing or hydrogen-containing gas flows can be continuously varied as a function of availability. For example, if a very large amount of hydrogen is available, this can be used up to almost 100% for the direct reduction; if necessary, however, it is also possible to switch to purely carbon-containing or hydrogen-containing gas flows (for example natural gas, biogas, gas from pyrolysis, renewable resources).
- the method is carried out so that regenerative energy, when present, is used to produce as much hydrogen as the existing energy permits and this hydrogen is used for the direct reduction.
- carbon-containing or hydrogen-containing gas flows also include gas flows from biogas production and pyrolysis or synthesis gas from biomass, i.e. renewable resources.
- This temporary storage of hydrogen can, for example, be provided by a gas holder and the adjustment of the contents of carbon-containing or hydrogen-containing gas flows can be carried out by means of a predictive control.
- This predictive control can measure the predicted yield/production quantity of hydrogen or regenerative energy, but can also be used, for example, to estimate the production quantity of regenerative energy based on weather forecasts. Demand forecasts of other external consumers can also flow into this predictive control so that the electrical energy produced from regenerative sources is optimally used in the most economical fashion.
- the temperatures of the gas flow that prevail in this case are adjusted by heating—for example with reformers, heaters, or partial oxidation—to 450° C. to 1200° C., preferably 600° C. to 1200° C., in particular 700° C. to 900° C. and then introduced into the direct reduction method in order to perform a chemical reaction there.
- the gas flow that [sic] exits the direct reduction method can be fed back into the process as a carbon-containing or hydrogen-containing gas flow.
- the resulting possible intermediate products according to the invention are HBI, HDRI, or CDRI.
- excess pressures of 0 bar to 15 bar are adjusted.
- excess pressures of approx. 1.5 bar are preferred in the MIDREX process and excess pressures of approximately 9 bar are preferred in the Energiron process.
- the carbon content can be adjusted in an ideal fashion and in fact can be adjusted to 0.0005% to 6.3%, preferably 1% to 3%, and directly incorporated into the intermediate product as C or Fe 3 C.
- An intermediate product of this kind is ideally adjusted in terms of the carbon content and is particularly well suited to further processing since it contributes the carbon content that is required for the metallurgical process.
- this energy in order to compensate for temporary fluctuations in the production of renewable energy, this energy can be stored in the form of hydrogen if a surplus of it is available. This storage can occur, for example, in a gas holder. Such a store can then be used in the event of fluctuations.
- Temporary fluctuations can be predictable, e.g. at night in solar installations, or unpredictable, e.g. fluctuations in wind intensity in wind energy plants.
- Another possibility for compensating for fluctuations can lie in the variable use of natural gas.
- the thermal state of the plant can thus be kept advantageously stable.
- Another advantage of the invention lies in the spatial decoupling of the locations of the production of regenerative energy and the use of this stored energy.
- solar power stations can be constructed in warmer regions with favorable amounts of solar radiation in which space is plentiful, whereas steel mills are often found in the vicinity of rivers or seas.
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Manufacture Of Iron (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
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Abstract
A method for temporarily storing energy in which iron ore is reduced with hydrogen and the resulting intermediate product of reduced iron ore and possibly accompanying substances is subjected to further metallurgical processing; the hydrogen is produced through electrolysis of water; the electrical energy required for the electrolysis is regenerative energy from hydroelectric and/or wind and/or photovoltaic sources or other regenerative forms of energy and the hydrogen and/or the intermediate product is produced regardless of the current demand, whenever enough regeneratively produced electrical energy is available; and unneeded intermediate product is stored until there is demand or it is used so that the regenerative energy that is stored therein is also stored and a method for storing discontinuously produced energy in which the discontinuously produced energy, when it is present or after its production, is conveyed into a process in which a storable intermediate product is produced from a source material and the storable intermediate product is stored until it is required and retrieved for the production of an end product.
Description
- The invention relates to a method for storing discontinuously produced energy.
- The percentage of regenerative energy should be increased globally; regenerative energy includes not only energy from renewable resources, but also energy generated from hydroelectric power, sunlight, and wind. Frequently, renewable resources can be used to produce energy continuously, for example in biomass power plants or biogas production plants.
- When solar energy or wind energy is used, however, energy is produced discontinuously due to its dependence on the weather. This discontinuously produced energy is not always available when it is actually needed, presenting the problem of storing this energy and making it available when needed.
- In particular, it is difficult to store this discontinuously produced energy in a form that can be easily made immediately available for the retail customer or for feeding into networks for retail customers.
- The object of the present invention is to create a method for storing discontinuously produced energy.
- According to the invention, the goal is not to use discontinuously produced energy in its originally produced form, but rather to use the energy for producing an easily storable intermediate product and thus to incorporate the energy into this intermediate product, with the intermediate product being a product that is required all over the world. When discontinuous energy is present, this intermediate product is produced and stored regardless of the demand for the intermediate product and then is supplied for further processing as needed. Since the production of the intermediate product requires large quantities of energy anyway, the energy consumption that would already occur in the production would be shifted in terms of time and location.
- According to the invention, metal, for example, in particular steel, is produced as the end product. Basically, the method according to the invention is suitable for all forms of industrial production in which a storable intermediate product is generated.
- In this connection, it is advantageous that the storage of the discontinuously produced energy in this case does not require a feeding back from a storage reservoir—of whatever type—into the original energy, but instead the original energy is used in a practical way and stored in the intermediate product and additional energy does not have to be expended in order to produce the intermediate product at the production site of the end product.
- The invention will be explained by way of example in conjunction with the drawings. In the drawings:
-
FIG. 1 shows an overview of the method according to the invention in an exemplary embodiment (electric arc furnace); -
FIG. 2 shows an overview of the method according to the invention in a second exemplary embodiment (LD process); -
FIG. 3 schematically depicts the flows of materials and energy. - According to the invention, the intermediate product is an intermediate product whose production requires an expenditure of energy that is quite high, in particular intermediate products for which a smelting process and/or a reduction process is required, which is in particular carried out using electricity, e.g. by means of an electric arc. In particular, however, this intermediate product can also be composed of iron directly reduced primarily from iron oxide carriers, e.g. in the form of a sponge iron or so-called hot briquetted iron (HBI). The use of the discontinuously produced regenerative energy and the storage thereof in the intermediate product also has the advantage that it is possible to operate in a climate neutral fashion.
- Steel production is currently carried out in a variety of ways. Classic steel production is carried out by producing pig iron in the hot furnace process, primarily out of iron oxide carriers. In this method, approx. 450 to 600 kg of reducing agent, usually coke, is consumed per metric ton of pig iron; this method, both in the production of coke from coal and in the production of the pig iron, releases very significant quantities of CO2. In addition, so-called “direct reduction methods” are known (methods according to the brands MIDREX, FINMET, ENERGIRON/HYL, etc.), in which the sponge iron is produced primarily from iron oxide carriers in the form of HDRI (hot direct reduced iron), CDRI (cold direct reduced iron), or so-called HBI (hot briquetted iron).
- There are also so-called smelting reduction methods in which the melting process, the production of reduction gas, and the direct reduction are combined with one another, for example the methods of the brands COREX, FINEX, HiSmelt, or HiSarna.
- Sponge irons in the form of HDRI, CDRI, and HBI usually undergo further processing in electric furnaces, which is extraordinarily energy-intensive. The direct reduction is carried out using hydrogen and carbon monoxide from methane and synthesis gas if necessary. For example, in the so-called MIDREX method, first methane is transformed according to the following reaction:
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CH4+CO2=2CO+2H2 - and the iron oxide reacts with the reduction gas, for example according to the following formula:
-
Fe2O3+6CO(H2)=2Fe+3CO2(H2O)+CO(H2). - This method also emits CO2.
- DE 198 53 747 C1 has disclosed a combined process for the direct reduction of fine ores in which the reduction is to be carried out with hydrogen or another reduction gas in a horizontal turbulence layer.
- DE 197 14 512 A1 has disclosed a power station with solar power generation, an electrolysis unit, and an industrial metallurgical process; this industrial process relates either to the power-intensive metal production of aluminum from bauxite or is intended to be a metallurgical process with hydrogen as a reducing agent in the production of nonferrous metals such as tungsten, molybdenum, nickel, or the like or is intended to be a metallurgical process with hydrogen as a reducing agent using the direct reduction method in the production of ferrous metals. The cited document, however, does not explain this in detail.
- WO 2011/018124 has disclosed methods and systems for producing storable and transportable carbon-based energy sources using carbon dioxide and using regenerative electrical energy and fossil fuels. In this case, a percentage of regeneratively produced methanol is prepared together with a percentage of methanol that is produced by means of non-regenerative electrical energy and/or by means of direct reduction and/or by means of partial oxidation and/or reforming.
- According to the invention, the intermediate product for the steel production is produced using a hot furnace and a subsequent LD process or using an electric arc furnace with regenerative energy and is stored in this way. A particular advantage is that the intermediate product produced by means of regenerative energy can be stored until it is processed further, which means that the method according to the invention permits a storage of regenerative energy. Up to now, this very storage of regenerative energy has presented a very large problem since in particular, electrical energy that is generated from wind or sun depends on climatic conditions that are not always the same. Even hydroelectrically generated electrical energy is not always available. Often, the consumers are not in the same locations as the production of regenerative energy. This problem of storage and subsequent mobility of the stored energy is solved by means of the invention since the intermediate product produced according to the invention can be efficiently transported in small units and in any quantity to any location, for example by marine transport.
- The energy in the method according to the invention is not in fact stored in a form that is accessible to virtually anyone and for general use from the storage reservoir; but the global demand for certain intermediate products is so high that according to the invention, the intermediate product constitutes the energy storage for other forms of energy demand, e.g. providing retail electricity customers with electrical energy from other sources or other storage reservoirs, thus permitting better management and planning of the total energy balance.
- In particular, the method according to the invention can be used in regions of the world in which the raw material for the intermediate product and the corresponding discontinuously produced regenerative energy are present in the same location. An example of this can be the magnesia storage facilities for the production of fused magnesia (e.g. for use in the flame retardant industry) that exist, for example, in Canada or China and correspondingly, the use of hydroelectric power or wind energy or (China) solar energy. In iron ores that are to be transformed into the corresponding intermediate product with direct reduction methods, such locations e.g. Sweden and Norway (hydroelectric power) or Australia (solar energy) in which the regenerative energy is used on the one hand to mechanically prepare the corresponding raw material, namely the iron ore (among other things breaking, grinding, agglomerating), and also for producing hydrogen for the direct reduction or for example for pyrolysis of wood to produce corresponding carbon-containing or hydrogen-containing gas flows.
- In the method according to the invention, this electrical energy generated from wind, hydro, or solar energy is used to produce hydrogen from water by electrolysis. Preferably at the site of the production of the hydrogen, a direct reduction system is operated, which is used for reducing iron ores - which are likewise particularly preferably completely prepared with electrical energy produced in this way. The intermediate product obtained in this way, in particular hot briquetted iron HBI, HDRI, or CDRI is an ideal way to store this regenerative energy, can be stored without restriction in large quantities, and is accessible via any form of transportation to a system for processing it further, particularly when it is needed there. In particular, this intermediate product can be produced at its production site—in large quantities that exceed the present requirement—when the corresponding electrical energy is available in sufficient quantity. If this energy is not available, then there are sufficient quantities of the intermediate product and thus of the energy in a stored form in order to be able to meet the need.
- Operating a corresponding electrical arc, likewise using only energy produced from wind-, hydroelectric-, or solar energy, succeeds in achieving a CO2-free steel production or smelting production (e.g. fused magnesia) and also in storing regenerative energy.
- According to the invention, the hydrogen from the regenerative processes can be used with carbon-containing or hydrogen-containing gas flows such as CH4, COG, synthesis gas etc., in a direct reduction system. The ratio of hydrogen from the regenerative processes to carbon-containing or hydrogen-containing gas flows can be continuously varied as a function of availability. For example, if a very large amount of hydrogen is available, this can be used up to almost 100% for the direct reduction; if necessary, however, it is also possible to switch to purely carbon-containing or hydrogen-containing gas flows (for example natural gas, biogas, gas from pyrolysis, renewable resources).
- Preferably, however, the method is carried out so that regenerative energy, when present, is used to produce as much hydrogen as the existing energy permits and this hydrogen is used for the direct reduction. It goes without saying that carbon-containing or hydrogen-containing gas flows also include gas flows from biogas production and pyrolysis or synthesis gas from biomass, i.e. renewable resources.
- Excess hydrogen that cannot be used immediately can be temporarily stored.
- This temporary storage of hydrogen can, for example, be provided by a gas holder and the adjustment of the contents of carbon-containing or hydrogen-containing gas flows can be carried out by means of a predictive control. This predictive control can measure the predicted yield/production quantity of hydrogen or regenerative energy, but can also be used, for example, to estimate the production quantity of regenerative energy based on weather forecasts. Demand forecasts of other external consumers can also flow into this predictive control so that the electrical energy produced from regenerative sources is optimally used in the most economical fashion.
- The temperatures of the gas flow that prevail in this case are adjusted by heating—for example with reformers, heaters, or partial oxidation—to 450° C. to 1200° C., preferably 600° C. to 1200° C., in particular 700° C. to 900° C. and then introduced into the direct reduction method in order to perform a chemical reaction there. In addition, the gas flow that [sic] exits the direct reduction method can be fed back into the process as a carbon-containing or hydrogen-containing gas flow.
- The resulting possible intermediate products according to the invention are HBI, HDRI, or CDRI.
- In this case, excess pressures of 0 bar to 15 bar are adjusted. For example, excess pressures of approx. 1.5 bar are preferred in the MIDREX process and excess pressures of approximately 9 bar are preferred in the Energiron process.
- When regeneratively produced hydrogen is mixed with carbon-containing or hydrogen-containing gas flows, the carbon content can be adjusted in an ideal fashion and in fact can be adjusted to 0.0005% to 6.3%, preferably 1% to 3%, and directly incorporated into the intermediate product as C or Fe3C. An intermediate product of this kind is ideally adjusted in terms of the carbon content and is particularly well suited to further processing since it contributes the carbon content that is required for the metallurgical process.
- In a preferred embodiment, in order to compensate for temporary fluctuations in the production of renewable energy, this energy can be stored in the form of hydrogen if a surplus of it is available. This storage can occur, for example, in a gas holder. Such a store can then be used in the event of fluctuations. Temporary fluctuations can be predictable, e.g. at night in solar installations, or unpredictable, e.g. fluctuations in wind intensity in wind energy plants.
- Longer-term fluctuations that can occur among other things due to the different seasons can preferably be factored into the energy storage in the form of HBI.
- Another possibility for compensating for fluctuations can lie in the variable use of natural gas. The thermal state of the plant can thus be kept advantageously stable.
- Another advantage of the invention lies in the spatial decoupling of the locations of the production of regenerative energy and the use of this stored energy. For example, solar power stations can be constructed in warmer regions with favorable amounts of solar radiation in which space is plentiful, whereas steel mills are often found in the vicinity of rivers or seas.
- Since the energy produced is stored in HBI, for example, it can be transported easily and efficiently.
Claims (13)
1. A method, for storing discontinuously produced energy, comprising:
supplying the discontinuously produced energy, when it is present or after it is produced, to a process in which a storable intermediate product is produced from a source material;
storing the storable intermediate product until it is required; and
retrieved retrieving the storable intermediate product for the production of an end product;
wherein the intermediate product is a ferrous material obtained from a direct reduction method; the source material is iron ore, which is directly reduced with the aid of hydrogen and/or carbon-containing or hydrogen-containing gas flows, and the hydrogen is produced through electrolysis of water using regeneratively produced electrical energy, and the hydrogen for the reduction has at least enough carbon-containing or hydrogen-containing gas added to it in various modifications to make the carbon content in the intermediate product 0.0005 mass % to 6.3 mass %.
2. The method according to claim 1 , comprising producing as much intermediate product as an existing discontinuously produced energy quantity permits and storing the intermediate product regardless of a demand for the intermediate product.
3. The method according to claim 1 , wherein the intermediate product is a product that is smelted or transformed using electrical energy and/or is a product that is prepared from a raw material or source material through mechanical processing using electrical energy and/or is a product that is transformed by a gas that has been produced using electrical energy.
4. (canceled)
5. The method according to claim 1 , in which iron ore is reduced with hydrogen and with carbon-containing or hydrogen-containing gas flows and the resulting intermediate product of reduced iron ore and possibly accompanying substances is subjected to further metallurgical processing, comprising producing the hydrogen through electrolysis of water wherein the electrical energy required for the electrolysis is regenerative energy from hydroelectric and/or wind and/or photovoltaic sources or other regenerative forms of energy and
the hydrogen and/or the intermediate product is produced regardless of the current demand, whenever enough regeneratively produced, electrical energy is available, where
unneeded intermediate product is stored until there is demand or it is used so that the regenerative energy that is stored therein is also stored.
6. The method according to claim 5 , comprising, in the reduction of the iron ore to produce the intermediate product, adding a carbon-containing or hydrogen-containing gas to the hydrogen in various modifications in order to be incorporated as carbon into the intermediate product in the reduction process.
7. The method according to claim 1 , wherein the carbon-containing or hydrogen-containing gas is methane or other carbon-containing gases from industrial processes or from biogas production or the pyrolysis of renewable resources.
8. The method according to claim 1 , wherein the hydrogen for the reduction has at least enough carbon-containing or hydrogen-containing gas added to it in various modifications to make the carbon content in the intermediate product 1 mass % to 3 mass %.
9. The method according to claim 1 , comprising introducing the reduction gas composed of hydrogen and possibly a carbon-containing or hydrogen-containing gas into the reduction process at a temperature of 450° C. to 1200° C.
10. The method according to claim 1 , wherein excess pressure in the reduction is between 0 bar and 15 bar.
11. The method according to claim 1 , wherein a ratio between hydrogen from regenerative production and carbon-containing or hydrogen-containing gas flows is varied continuously as a function of availability; when there is sufficient regenerative energy, hydrogen from the production with regenerative energy is used, and in the absence of discontinuously produced regenerative energy, the system switches to carbon-containing or hydrogen-containing gas flows from continuously produced regenerative energy.
12. The method according to claim 1 , comprising adjusting the content of hydrogen and/or carbon-containing or hydrogen-containing gas flows in the overall gas flow using a predictive control; wherein the predictive control is used to measure the predicted yield/production quantity of hydrogen and/or regenerative energy and/or carbon-containing or hydrogen-containing gas flows from biogas synthesis or from the gasification of renewable resources and/or forecasts flow into the estimation of regenerative energy; and demand predictions of other external consumers also flow into the process, thus permitting the electrical energy from regenerative sources to be distributed optimally and in the most economical fashion.
13. The method according to claim 1 , wherein almost the entire gas flow that exits the direct reduction system is conveyed back into the process.
Applications Claiming Priority (7)
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DE102012108631.1 | 2012-09-14 | ||
DE102012108631 | 2012-09-14 | ||
DE102012109284.2 | 2012-09-28 | ||
DE201210109284 DE102012109284A1 (en) | 2012-09-14 | 2012-09-28 | Producing steel, comprises reducing iron ore with hydrogen, processing the obtained intermediate product from reduced iron ore and optionally metallurgically further processing the impurities |
DE102013104002.0A DE102013104002A1 (en) | 2013-04-19 | 2013-04-19 | Process for heating process gases for direct reduction plants |
DE102013104002.0 | 2013-04-19 | ||
PCT/EP2013/068727 WO2014040990A2 (en) | 2012-09-14 | 2013-09-10 | Method for storing discontinuously obtained energy |
Publications (1)
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US14/428,206 Abandoned US20150259760A1 (en) | 2012-09-14 | 2013-09-10 | Method for producing steel |
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US14/428,116 Abandoned US20150259759A1 (en) | 2012-09-14 | 2013-09-10 | Method for heating process gases for direct reduction systems |
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US14/428,206 Abandoned US20150259760A1 (en) | 2012-09-14 | 2013-09-10 | Method for producing steel |
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US14/428,116 Abandoned US20150259759A1 (en) | 2012-09-14 | 2013-09-10 | Method for heating process gases for direct reduction systems |
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EP (3) | EP2895631B1 (en) |
JP (3) | JP2015534604A (en) |
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CN (3) | CN104662176A (en) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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SE2150068A1 (en) * | 2021-01-22 | 2022-07-23 | Hybrit Dev Ab | Arrangement and process for charging iron ore to, and/or discharging sponge iron from, a direct reduction shaft |
WO2022243726A1 (en) * | 2021-05-18 | 2022-11-24 | Arcelormittal | A method for manufacturing direct reduced iron |
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EP4194569A1 (en) * | 2021-12-08 | 2023-06-14 | Doosan Lentjes GmbH | Method for handling particulate metal |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150259760A1 (en) | 2012-09-14 | 2015-09-17 | Voestalpine Stahl Gmbh | Method for producing steel |
CN107058749A (en) * | 2016-12-27 | 2017-08-18 | 武汉钢铁有限公司 | The devices and methods therefor of zinc and lead in gas mud is removed using shaft furnace |
EP3581663A1 (en) | 2018-06-12 | 2019-12-18 | Primetals Technologies Austria GmbH | Preparation of carburised sponge iron by hydrogen-based direct reduction |
DE102018211104A1 (en) * | 2018-07-05 | 2020-01-09 | Thyssenkrupp Ag | Method and device for operating a production plant |
EP3670676A1 (en) * | 2018-12-17 | 2020-06-24 | Primetals Technologies Austria GmbH | Method and device for direct reduction with electrically heated reducing gas |
CN111910036B (en) * | 2019-05-10 | 2022-05-03 | 中冶长天国际工程有限责任公司 | Method for co-producing high-quality synthesis gas by reducing vanadium titano-magnetite with biomass |
CN113874486B (en) | 2019-06-06 | 2023-02-24 | 米德雷克斯技术公司 | Direct reduction process using hydrogen |
US11952638B2 (en) * | 2019-09-27 | 2024-04-09 | Midrex Technologies, Inc. | Direct reduction process utilizing hydrogen |
SE2030072A1 (en) * | 2020-03-10 | 2021-09-11 | Hybrit Dev Ab | Methanol as hydrogen carier in H-DRI process |
CN115427588A (en) * | 2020-04-27 | 2022-12-02 | 杰富意钢铁株式会社 | Steel-making equipment and method for manufacturing reduced iron |
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SE545624C2 (en) * | 2021-06-11 | 2023-11-14 | Hybrit Dev Ab | Process for the production of carburized sponge iron |
KR20240011169A (en) * | 2021-06-14 | 2024-01-25 | 제이에프이 스틸 가부시키가이샤 | Method for producing reduced iron |
SE545625C2 (en) | 2021-07-07 | 2023-11-14 | Hybrit Dev Ab | Iron briquettes |
DE102021128987A1 (en) | 2021-11-08 | 2023-05-11 | Rhm Rohstoff-Handelsgesellschaft Mbh | Process for remelting sponge iron and/or hot-pressed sponge iron and scrap into crude steel in a converter |
DE102022201918A1 (en) | 2022-02-24 | 2023-08-24 | Sms Group Gmbh | Metallurgical production plant and method for its operation |
SE2250421A1 (en) | 2022-04-01 | 2023-10-02 | Luossavaara Kiirunavaara Ab | Method for producing steel and sponge iron manufacturing process |
EP4373209A1 (en) | 2022-11-15 | 2024-05-22 | Primetals Technologies Austria GmbH | Electric heating of gas |
Family Cites Families (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1167016A (en) * | 1913-12-24 | 1916-01-04 | Emil Bruce Pratt | Process of reducing iron ores and other metallic oxids to the metallic state. |
GB657824A (en) * | 1948-08-06 | 1951-09-26 | Alfred Gordon Evans Robiette | Improvements in and relating to the direct reduction of iron ores |
US2609288A (en) * | 1949-03-08 | 1952-09-02 | Isobel E Stuart | Process for the reduction of metal oxides by gases |
GB846284A (en) * | 1956-01-07 | 1960-08-31 | Norsk Hydro Elektrisk | Improvements in and relating to the production of sponge iron |
US4054444A (en) * | 1975-09-22 | 1977-10-18 | Midrex Corporation | Method for controlling the carbon content of directly reduced iron |
US4046556A (en) | 1976-01-02 | 1977-09-06 | Fierro Esponja, S.A. | Direct gaseous reduction of oxidic metal ores with dual temperature cooling of the reduced product |
DE2733785A1 (en) | 1977-07-27 | 1979-02-08 | Didier Eng | PROCESS FOR PROCESSING COOKING GAS |
JPS5811484B2 (en) * | 1980-12-04 | 1983-03-03 | 三菱重工業株式会社 | Method for manufacturing reduced iron |
DE3317701C2 (en) | 1983-05-16 | 1986-08-07 | Hylsa S.A., Monterrey, N.L. | A method of operating a vertical shaft moving bed reduction reactor for reducing iron ore to sponge iron |
DE3432090C2 (en) * | 1984-08-28 | 1986-11-27 | Korf Engineering GmbH, 4000 Düsseldorf | Method and device for the direct reduction of sulfur-containing iron ores |
JPS6220889A (en) * | 1985-07-18 | 1987-01-29 | Terukazu Suzuki | Production of auxiliary fuel by natural force-utilizing power generation electrolysis and its application |
US4834792A (en) | 1986-08-21 | 1989-05-30 | Hylsa S.A. De C.V. | Method for producing hot sponge iron by introducing hydrocarbon for carburizing into reduction zone |
US4880459A (en) * | 1988-06-27 | 1989-11-14 | T.C., Inc. | Method of and apparatus for reducing iron oxide to metallic iron |
DE4037977A1 (en) * | 1990-11-29 | 1992-06-11 | Voest Alpine Ind Anlagen | METHOD FOR THE PRODUCTION OF RAW IRON OR IRON SPONGE |
US5618032A (en) | 1994-05-04 | 1997-04-08 | Midrex International B.V. Rotterdam, Zurich Branch | Shaft furnace for production of iron carbide |
US5454853A (en) * | 1994-06-10 | 1995-10-03 | Borealis Technical Incorporated Limited | Method for the production of steel |
JP2727436B2 (en) * | 1995-05-31 | 1998-03-11 | 川崎重工業株式会社 | Method and apparatus for manufacturing iron carbide |
AT403696B (en) * | 1996-06-20 | 1998-04-27 | Voest Alpine Ind Anlagen | MELTING CARBURETTOR AND SYSTEM FOR THE PRODUCTION OF A METAL MELT |
AT404256B (en) * | 1996-11-06 | 1998-10-27 | Voest Alpine Ind Anlagen | METHOD FOR PRODUCING IRON SPONGE |
DE19714512C2 (en) | 1997-04-08 | 1999-06-10 | Tassilo Dipl Ing Pflanz | Maritime power plant with manufacturing process for the extraction, storage and consumption of regenerative energy |
DE19838368C1 (en) * | 1998-08-24 | 1999-08-12 | Ferrostaal Ag | Method and installation for reducing iron ore |
DE19853747C1 (en) | 1998-11-21 | 2000-03-30 | Ferrostaal Ag | Combined process for direct reduction of fine ores involves extraction of non-fluidized ore from the first chamber of the horizontal fluidized bed trough, and full reduction of this ore in the counter-flow reactor |
IT1302811B1 (en) | 1998-12-11 | 2000-09-29 | Danieli & C Ohg Sp | PROCEDURE AND RELATED APPARATUS FOR DIRECT REDUCTION OF IRON OXIDES |
IT1310535B1 (en) * | 1999-02-18 | 2002-02-18 | Danieli Off Mecc | DIRECT REDUCTION PROCESS FOR METAL MATERIAL AND RELATED INSTALLATION |
EP1160337A1 (en) * | 2000-05-31 | 2001-12-05 | DANIELI & C. OFFICINE MECCANICHE S.p.A. | Process to preheat and carburate directly reduced iron (DRI) to be fed to an electric arc furnace (EAF) |
US6858953B2 (en) * | 2002-12-20 | 2005-02-22 | Hawaiian Electric Company, Inc. | Power control interface between a wind farm and a power transmission system |
DE102005060094A1 (en) | 2005-12-15 | 2007-06-21 | Linde Ag | Material use of biogas |
DE102006048600B4 (en) * | 2006-10-13 | 2012-03-29 | Siemens Vai Metals Technologies Gmbh | Method and device for producing molten material |
EP2181491A2 (en) * | 2007-08-09 | 2010-05-05 | Werner Leonhard | Support of a sustainable energy supply having a carbon cycle using regeneratively generated hydrogen |
DE102007045888B4 (en) * | 2007-09-25 | 2010-04-15 | Ea Energiearchitektur Gmbh | Process for conversion and storage of regenerative energy |
US20090249922A1 (en) * | 2008-04-02 | 2009-10-08 | Bristlecone International, Llc | Process for the production of steel using a locally produced hydrogen as the reducing agent |
JP5413821B2 (en) * | 2008-05-19 | 2014-02-12 | 公益財団法人若狭湾エネルギー研究センター | Low temperature iron making process capable of high-speed smelting |
CN101768651A (en) * | 2008-09-23 | 2010-07-07 | 樊显理 | Hydrogen metallurgy method |
JP5311334B2 (en) * | 2008-11-21 | 2013-10-09 | 公益財団法人若狭湾エネルギー研究センター | Hydrogen production method using sponge iron |
US8915981B2 (en) | 2009-04-07 | 2014-12-23 | Gas Technology Institute | Method for producing methane from biomass |
CA2769950C (en) | 2009-08-13 | 2017-08-15 | Silicon Fire Ag | Method and system for providing a hydrocarbon-based energy carrier using a portion of renewably produced methanol and a portion of methanol that is produced by means of direct oxidation, partial oxidation, or reforming |
CN101638702B (en) * | 2009-08-14 | 2011-07-20 | 中冶赛迪工程技术股份有限公司 | Recycling method of outlet gas in direct reduction process using gas as reducing gas |
AU2010320483A1 (en) * | 2009-11-20 | 2012-07-12 | Cri Ehf | Storage of intermittent renewable energy as fuel using carbon containing feedstock |
WO2011116141A2 (en) * | 2010-03-18 | 2011-09-22 | Sun Hydrogen, Inc. | Clean steel production process using carbon-free renewable energy source |
US8600572B2 (en) | 2010-05-27 | 2013-12-03 | International Business Machines Corporation | Smarter-grid: method to forecast electric energy production and utilization subject to uncertain environmental variables |
JP5593883B2 (en) * | 2010-07-02 | 2014-09-24 | Jfeスチール株式会社 | How to reduce carbon dioxide emissions |
JP5510199B2 (en) * | 2010-08-31 | 2014-06-04 | Jfeスチール株式会社 | Production and use of hydrogen and oxygen |
EP2426236B1 (en) * | 2010-09-03 | 2013-01-02 | Carbon-Clean Technologies AG | Method and fuel generation assembly for the carbon dioxide-neutral compensation of energy peaks and troughs in the generation of electrical energy and/or for producing a fuel containing hydrocarbons |
JP5594013B2 (en) * | 2010-09-21 | 2014-09-24 | Jfeスチール株式会社 | Reduced iron production method |
CN101975141B (en) * | 2010-10-20 | 2013-09-04 | 中电普瑞科技有限公司 | Offshore wind power/frequency control method |
DE102011112093A1 (en) | 2011-06-03 | 2012-12-06 | Carbon-Clean Technologies Ag | Producing carbon dioxide-free liquid hydrocarbon-containing energy carrier preferably methanol, comprises converting carbon monoxide-containing gaseous energy carrier to carbon dioxide and hydrogen-containing gas in water-gas shift reaction |
CN102424873B (en) | 2011-12-03 | 2013-01-30 | 石家庄市新华工业炉有限公司 | Method and device for solar reduction iron making |
US20150259760A1 (en) | 2012-09-14 | 2015-09-17 | Voestalpine Stahl Gmbh | Method for producing steel |
-
2013
- 2013-09-10 US US14/428,206 patent/US20150259760A1/en not_active Abandoned
- 2013-09-10 KR KR1020157009624A patent/KR20150063075A/en not_active Application Discontinuation
- 2013-09-10 ES ES13763210T patent/ES2952386T3/en active Active
- 2013-09-10 EP EP13765312.7A patent/EP2895631B1/en not_active Revoked
- 2013-09-10 JP JP2015531541A patent/JP2015534604A/en active Pending
- 2013-09-10 KR KR1020157009633A patent/KR20150065728A/en not_active Application Discontinuation
- 2013-09-10 US US14/428,280 patent/US20150329931A1/en not_active Abandoned
- 2013-09-10 CN CN201380047304.7A patent/CN104662176A/en active Pending
- 2013-09-10 JP JP2015531542A patent/JP2015532948A/en active Pending
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- 2013-09-10 EP EP13763210.5A patent/EP2895630B1/en active Active
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SE2050508A1 (en) * | 2020-05-04 | 2021-11-05 | Hybrit Dev Ab | Process for the production of carburized sponge iron |
WO2021225500A1 (en) * | 2020-05-04 | 2021-11-11 | Hybrit Development Ab | Process for the production of carburized sponge iron |
EP4146834A4 (en) * | 2020-05-04 | 2024-04-17 | HYBRIT Development AB | Process for the production of carburized sponge iron |
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SE545311C2 (en) * | 2020-11-25 | 2023-06-27 | Hybrit Dev Ab | Process for the production of carburized sponge iron |
SE2150068A1 (en) * | 2021-01-22 | 2022-07-23 | Hybrit Dev Ab | Arrangement and process for charging iron ore to, and/or discharging sponge iron from, a direct reduction shaft |
WO2022243726A1 (en) * | 2021-05-18 | 2022-11-24 | Arcelormittal | A method for manufacturing direct reduced iron |
EP4163402A1 (en) * | 2021-10-07 | 2023-04-12 | voestalpine Texas LLC | Induction heating of dri |
EP4194569A1 (en) * | 2021-12-08 | 2023-06-14 | Doosan Lentjes GmbH | Method for handling particulate metal |
WO2023104719A1 (en) * | 2021-12-08 | 2023-06-15 | Doosan Lentjes Gmbh | Method for handling particulate metal |
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KR20150053809A (en) | 2015-05-18 |
ES2689779T3 (en) | 2018-11-15 |
KR20150065728A (en) | 2015-06-15 |
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CN104662177A (en) | 2015-05-27 |
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CN104662176A (en) | 2015-05-27 |
EP2895630B1 (en) | 2023-06-07 |
WO2014040989A3 (en) | 2014-06-12 |
WO2014040989A2 (en) | 2014-03-20 |
EP2895630A2 (en) | 2015-07-22 |
US20150259759A1 (en) | 2015-09-17 |
US20150259760A1 (en) | 2015-09-17 |
KR20150063075A (en) | 2015-06-08 |
JP2015529751A (en) | 2015-10-08 |
FI2895630T3 (en) | 2023-08-15 |
JP2015534604A (en) | 2015-12-03 |
WO2014040990A2 (en) | 2014-03-20 |
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