US20150259759A1 - Method for heating process gases for direct reduction systems - Google Patents
Method for heating process gases for direct reduction systems Download PDFInfo
- Publication number
- US20150259759A1 US20150259759A1 US14/428,116 US201314428116A US2015259759A1 US 20150259759 A1 US20150259759 A1 US 20150259759A1 US 201314428116 A US201314428116 A US 201314428116A US 2015259759 A1 US2015259759 A1 US 2015259759A1
- Authority
- US
- United States
- Prior art keywords
- gas
- reduction
- unit
- heating
- enriching
- 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.)
- Abandoned
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Furnace Details (AREA)
Abstract
A method for reducing iron ore in the direct reduction method, in which the iron ore to be reduced is conveyed through a reduction unit such as a reduction shaft and is brought into contact with a reduction gas; the reduction gas is brought into the reduction unit and flows through the unit; after flowing through the unit, it is taken from the unit; after exiting the unit, the gas is prepared and possibly enriched with new gas components and is fed back again; and the generated gas is heated before entry into the reduction unit, characterized in that the heating of the reduction gas prior to the entry into the unit is carried out in an electrical fashion.
Description
- The invention relates to a method for heating process gases for direct reduction systems.
- 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 natural gas (methane) and possibly synthesis gas as well as coke oven gas. For example, in the so-called MIDREX method, first methane is transformed according to the following reaction:
-
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)+3 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.
- In the direct reduction method, the gas emerging downstream of the reduction shaft—after it is purified and the water has been separated out and additional CO2 separation in the HYL method or optional additional CO2 separation in the HYL MIDREX method—is predominantly fed back into the process as recycling gas. As a rule, this gas is in turn enriched with natural gas in order to supply fresh reduction gas. In the HYL method, the gas, which the gas purification has cooled from approximately 105° C., is heated again to approximately 700 to 1100° C. and then a partial oxidation with oxygen is performed.
- In the MIDREX method, CO2 and water are transformed with natural gas into H2 and CO in a heated reformer in a temperature range from approximately 700 to 1100° C. Both methods share the fact that a partial flow of the gas that has been purified and is exiting the reduction shaft is introduced and is enriched with natural gas.
- The reduction process can be expressed with the following equation:
-
Fe2O3+6CO(H2)=2Fe+3CO2(H2O)+3CO(H2) (1) - In the MIDREX method, the following reactions take place in the reformer:
-
CH4+CO2→2CO+2H2 (2) -
CH4+H2O→CO+3H2 (3) - In the HYL method, the following reaction takes place:
-
CH4+½O2→CO+2H2 (4) - In both methods, the additionally used fossil fuel, namely natural gas, is used to heat the process gases and to heat the reformer.
- One object of the invention is to create a method for heating process gases for direct reduction systems with which the heating of process gases can be better and more flexibly adapted to and optimized for an overall process that is adapted to the energy demand and to the available energy.
- Another object of the invention is to reduce CO2 emissions.
- In order to make the heating process more flexible, according to the invention, the heating of the reduction gases and of the reformer is changed to an electrical heating.
- Preferably, the electrical energy can be produced from renewable resources, thus replacing fossil fuels.
- This advantageously increases the flexibility of the process with regard to the energy sources used; this is achieved through combined heating by means of a variable use of fossil fuels and electrical energy.
- In this regard, the invention has the advantage that electrical current can be considered to be 100% energy so that it can be completely converted into high temperature heat. The direct convertibility of electrical energy into heat permits the addition of a high degree of flexibility, particularly also with regard to the use of current peaks that are inexpensively available on the market.
- It is also advantageous that current from renewable energy sources such as hydroelectric, wind power, or solar energy does not cause any CO2 emissions when it is produced.
- The invention will be explained by way of example in conjunction with the drawings. In the drawings:
-
FIG. 1 shows as an example the HYL Energiron method according to the prior art, with a natural gas-powered process gas heating; -
FIG. 2 shows the HYL Energiron method according to the invention, with an electrically-powered process gas heating; -
FIG. 3 is a very schematic depiction of the MIDREX method; -
FIG. 4 is a very schematic depiction of an expensive and complex CO2-optimized MIDREX method according to the prior art, with a CO2-removal unit (e.g. VPSA—vacuum-pressure swing adsorption). - The HYL method is shown by way of example in
FIG. 2 on the basis of a capacity of two million metric tons of direct reduced iron (DRI) per year, including an electric arc furnace (EAF). The process gas from the shaft in which the iron ore is reduced is first conveyed through a water separation and then through a CO2 separation. The circulating gas volume flow in this case is approximately 500,000 m3 per hour. Approximately 72,000 m3 of natural gas per hour is added to this gas flow, 56,000 m3 of which is used for the reduction and approximately 16,000 m3 of which is diverted for heating the process gas from 105 to 970° C. Next, oxygen is added to the heated process gas and this is then fed back into the reduction shaft. - In a method according to the invention (
FIG. 2 ), the reduction gas is likewise taken from the shaft and conveyed through a water separation and a CO2 separation. Thanks to the electrical heating of the process gas heating, it is only necessary to add a quantity of approximately 56,000 m3 of natural gas per hour, which is split with oxygen into CO and hydrogen in accordance with the above-mentioned formulas. The table inFIG. 2 shows that this achieves a 21% reduction in CO2 per ton of reduced iron. In addition, because of the electric heating, the process can be used in an exactly controllable and flexible way. -
FIG. 3 shows the MIDREX method in which the exhaust gas is likewise withdrawn in the reduction shaft and divided into a process gas flow and a heating gas flow. The process gas flow is conveyed through a process gas compressor until natural gas is added to it—particularly in a system that is likewise designed for 2 million metric tons of reduced iron per year—in a quantity of approximately 63,000 m3 of natural gas per hour. This process gas passes through a heat exchanger, in which it is preheated by the exhaust gases from the reformer to 600° C. and then passes through the reformer and in so doing, is heated to 980° C. and is conveyed back to the shaft as process gas, which is enriched with additional natural gas and oxygen. The heating gas is likewise taken from the shaft furnace, enriched with natural gas, and conveyed into the reformer together with preheated combustion air. The total required quantity of natural gas is approximately 68,200 m3 per hour; by heating the reformer electrically, it is possible to compensate for approximately 5,100 m3 of exhaust gas per hour with 52 Megawatts of electric power. As a result of this, it is possible on the one hand to achieve a 7.5% reduction of CO2 per metric ton of reduced iron ore. In addition, this process can also be controlled in a more flexible, precise fashion thanks to the electric heating. - The invention has the advantage of achieving a simple and quickly implementable option for replacing fossil fuels with electrical power from renewable energies. CO2 emissions from direct reduction systems are also reduced. The invention also makes it possible to successfully operate direct reduction systems in an effective and flexible way. In particular, in a steel production that is adapted to the availability of regenerative energies with an electrically-powered preheating of process gas, particularly one with heating based on renewable energies, it is possible to achieve an improvement and reciprocal adaptation.
- It is also advantageous that such a system can inexpensively make use of available current peaks.
Claims (7)
1. A method for reducing iron ore in a direct reduction method, comprising:
conveying the iron ore to be reduced through a reduction unit such as a reduction shaft and bringing the iron ore into contact with a reduction gas;
bringing the reduction gas into the reduction unit to flow through the unit;
after flowing through the unit, taking the reduction gas from the unit;
after exiting the unit, preparing the gas and possibly enriching the gas with new gas components and feeding the gas back again into the reduction unit; and
heating the generated gas mixture or the reduction gas products from the generated gas mixture to 700 to 1100 before entry into the reduction unit, wherein the heating is carried out in a predominantly electrical fashion.
2. The method according to claim 1 , comprising using electrical power from regenerative energy sources for the electric heating.
3. The method according to claim 1 , further comprising, after the gas has exited the unit, enriching the gas with natural gas, coke oven gas, or a synthesis gas from biomass or coal.
4. The method according to claim 1 , comprising enriching the gas mixture with oxygen.
5. The method according to claim 1 , comprising enriching the gas taken from the reduction shaft with natural gas, coke oven gas, or a synthesis gas from biomass or coal and then heating the enriched gas.
6. The method according to claim 1 , comprising enriching the gas taken from the reduction shaft with natural gas, coke oven gas, or a synthesis gas from biomass or coal and then transforming the enriched gas in a reformer.
7. The method according to claim 1 , comprising ensuring a cost-optimized use of energy sources through a continuous evaluation of gas prices and electricity prices.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012108631.1 | 2012-09-14 | ||
DE102012108631 | 2012-09-14 | ||
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 |
DE102012109284.2 | 2012-09-28 | ||
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/EP2013/068743 WO2014040997A1 (en) | 2012-09-14 | 2013-09-10 | Method for heating process gases for direct reduction plants |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150259759A1 true US20150259759A1 (en) | 2015-09-17 |
Family
ID=50277660
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/428,206 Abandoned US20150259760A1 (en) | 2012-09-14 | 2013-09-10 | Method for producing steel |
US14/428,280 Abandoned US20150329931A1 (en) | 2012-09-14 | 2013-09-10 | Method for storing discontinuously produced energy |
US14/428,116 Abandoned US20150259759A1 (en) | 2012-09-14 | 2013-09-10 | Method for heating process gases for direct reduction systems |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/428,206 Abandoned US20150259760A1 (en) | 2012-09-14 | 2013-09-10 | Method for producing steel |
US14/428,280 Abandoned US20150329931A1 (en) | 2012-09-14 | 2013-09-10 | Method for storing discontinuously produced energy |
Country Status (8)
Country | Link |
---|---|
US (3) | US20150259760A1 (en) |
EP (3) | EP2895631B1 (en) |
JP (3) | JP2015529751A (en) |
KR (3) | KR20150065728A (en) |
CN (3) | CN104662176A (en) |
ES (2) | ES2689779T3 (en) |
FI (1) | FI2895630T3 (en) |
WO (3) | WO2014040989A2 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2689779T3 (en) | 2012-09-14 | 2018-11-15 | Voestalpine Stahl Gmbh | Procedure to produce steel with renewable energy |
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 |
CA3139620C (en) | 2019-06-06 | 2023-10-17 | Todd Michael Astoria | Direct reduction process utilizing 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 |
BR112022021678A2 (en) * | 2020-04-27 | 2022-12-20 | Jfe Steel Corp | STEEL MANUFACTURING LINE AND REDUCED IRON PRODUCTION METHOD |
SE2050508A1 (en) * | 2020-05-04 | 2021-11-05 | Hybrit Dev Ab | Process for the production of carburized sponge iron |
DE102020116425A1 (en) | 2020-06-22 | 2021-12-23 | Salzgitter Flachstahl Gmbh | Process for the production of crude steel with a low N content |
CN114525518B (en) * | 2020-11-09 | 2023-01-31 | 中国石油大学(北京) | Method for utilizing renewable energy source electricity |
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 |
SE2150180A1 (en) * | 2021-02-19 | 2022-08-20 | Luossavaara Kiirunavaara Ab | Metal oxide material reduction means |
JP2022157631A (en) * | 2021-03-31 | 2022-10-14 | Jfeスチール株式会社 | Manufacturing method of reduced iron, and manufacturing apparatus of reduced iron |
CN117337337A (en) * | 2021-05-18 | 2024-01-02 | 安赛乐米塔尔公司 | Method for producing direct reduced iron |
SE545624C2 (en) * | 2021-06-11 | 2023-11-14 | Hybrit Dev Ab | Process for the production of carburized sponge iron |
EP4350011A1 (en) * | 2021-06-14 | 2024-04-10 | JFE Steel Corporation | Method for producing reduced iron |
SE545625C2 (en) | 2021-07-07 | 2023-11-14 | Hybrit Dev Ab | Iron briquettes |
EP4163402A1 (en) * | 2021-10-07 | 2023-04-12 | voestalpine Texas LLC | Induction heating of dri |
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 |
EP4194569A1 (en) * | 2021-12-08 | 2023-06-14 | Doosan Lentjes GmbH | Method for handling particulate metal |
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 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4376648A (en) * | 1980-12-04 | 1983-03-15 | Mitsubishi Jukogyo Kabushiki Kaisha | Process for producing reduced iron |
US4790517A (en) * | 1984-08-28 | 1988-12-13 | Korf Engineering Gmbh | Apparatus for the direct reduction of sulphurous iron ores |
US4880459A (en) * | 1988-06-27 | 1989-11-14 | T.C., Inc. | Method of and apparatus for reducing iron oxide to metallic iron |
US5238487A (en) * | 1990-11-29 | 1993-08-24 | Deutsche Voest Alpine Industrieanlagenbau Gmbh | Process for the production of pig iron and sponge iron |
US6156262A (en) * | 1996-06-20 | 2000-12-05 | Voest-Alpine Industrieanlagenbau Gmbh | Melter gasifier for the production of a metal melt |
DE102007045888A1 (en) * | 2007-09-25 | 2009-04-02 | Ea Energiearchitektur Gmbh | Regenerative energy or surplus cyclic incoming electric energy converting and storing method for use in e.g. commercial area, involves indirectly cooling and condensing surface by storage medium i.e. water |
Family Cites Families (42)
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 |
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 |
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 |
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 |
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 |
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 |
CN104032059B (en) * | 2008-09-23 | 2015-11-18 | 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 |
WO2011018124A1 (en) | 2009-08-13 | 2011-02-17 | Silicon Fire Ag | Method and system for providing a hydrocarbon-based energy source using a portion of renewably produced methanol and a portion of methanol that is produced by means of direct oxidation, partial oxidation, or reforming |
US8915981B2 (en) * | 2009-04-07 | 2014-12-23 | Gas Technology Institute | Method for producing methane from biomass |
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 |
WO2011061764A1 (en) * | 2009-11-20 | 2011-05-26 | 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 |
ES2689779T3 (en) | 2012-09-14 | 2018-11-15 | Voestalpine Stahl Gmbh | Procedure to produce steel with renewable energy |
-
2013
- 2013-09-10 ES ES13765312.7T patent/ES2689779T3/en active Active
- 2013-09-10 FI FIEP13763210.5T patent/FI2895630T3/en active
- 2013-09-10 EP EP13765312.7A patent/EP2895631B1/en not_active Revoked
- 2013-09-10 JP JP2015531540A patent/JP2015529751A/en active Pending
- 2013-09-10 WO PCT/EP2013/068726 patent/WO2014040989A2/en active Application Filing
- 2013-09-10 JP JP2015531541A patent/JP2015534604A/en active Pending
- 2013-09-10 US US14/428,206 patent/US20150259760A1/en not_active Abandoned
- 2013-09-10 CN CN201380047304.7A patent/CN104662176A/en active Pending
- 2013-09-10 CN CN201380046926.8A patent/CN104662175A/en active Pending
- 2013-09-10 US US14/428,280 patent/US20150329931A1/en not_active Abandoned
- 2013-09-10 CN CN201380047309.XA patent/CN104662177A/en active Pending
- 2013-09-10 US US14/428,116 patent/US20150259759A1/en not_active Abandoned
- 2013-09-10 WO PCT/EP2013/068743 patent/WO2014040997A1/en active Application Filing
- 2013-09-10 EP EP13762102.5A patent/EP2895629A1/en not_active Withdrawn
- 2013-09-10 KR KR1020157009633A patent/KR20150065728A/en not_active Application Discontinuation
- 2013-09-10 JP JP2015531542A patent/JP2015532948A/en active Pending
- 2013-09-10 EP EP13763210.5A patent/EP2895630B1/en active Active
- 2013-09-10 ES ES13763210T patent/ES2952386T3/en active Active
- 2013-09-10 KR KR1020157009638A patent/KR20150053809A/en not_active Application Discontinuation
- 2013-09-10 KR KR1020157009624A patent/KR20150063075A/en not_active Application Discontinuation
- 2013-09-10 WO PCT/EP2013/068727 patent/WO2014040990A2/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4376648A (en) * | 1980-12-04 | 1983-03-15 | Mitsubishi Jukogyo Kabushiki Kaisha | Process for producing reduced iron |
US4790517A (en) * | 1984-08-28 | 1988-12-13 | Korf Engineering Gmbh | Apparatus for the direct reduction of sulphurous iron ores |
US4880459A (en) * | 1988-06-27 | 1989-11-14 | T.C., Inc. | Method of and apparatus for reducing iron oxide to metallic iron |
US5238487A (en) * | 1990-11-29 | 1993-08-24 | Deutsche Voest Alpine Industrieanlagenbau Gmbh | Process for the production of pig iron and sponge iron |
US6156262A (en) * | 1996-06-20 | 2000-12-05 | Voest-Alpine Industrieanlagenbau Gmbh | Melter gasifier for the production of a metal melt |
DE102007045888A1 (en) * | 2007-09-25 | 2009-04-02 | Ea Energiearchitektur Gmbh | Regenerative energy or surplus cyclic incoming electric energy converting and storing method for use in e.g. commercial area, involves indirectly cooling and condensing surface by storage medium i.e. water |
Non-Patent Citations (1)
Title |
---|
Nester, W et al. DE 102007045888 published 04-2009. Machine translation * |
Also Published As
Publication number | Publication date |
---|---|
ES2689779T3 (en) | 2018-11-15 |
EP2895629A1 (en) | 2015-07-22 |
CN104662176A (en) | 2015-05-27 |
WO2014040990A3 (en) | 2014-06-12 |
WO2014040990A2 (en) | 2014-03-20 |
KR20150053809A (en) | 2015-05-18 |
WO2014040989A3 (en) | 2014-06-12 |
EP2895631B1 (en) | 2018-07-18 |
CN104662175A (en) | 2015-05-27 |
EP2895630B1 (en) | 2023-06-07 |
US20150329931A1 (en) | 2015-11-19 |
ES2952386T3 (en) | 2023-10-31 |
EP2895631A2 (en) | 2015-07-22 |
US20150259760A1 (en) | 2015-09-17 |
JP2015534604A (en) | 2015-12-03 |
WO2014040997A1 (en) | 2014-03-20 |
JP2015532948A (en) | 2015-11-16 |
KR20150065728A (en) | 2015-06-15 |
KR20150063075A (en) | 2015-06-08 |
CN104662177A (en) | 2015-05-27 |
WO2014040989A2 (en) | 2014-03-20 |
EP2895630A2 (en) | 2015-07-22 |
FI2895630T3 (en) | 2023-08-15 |
JP2015529751A (en) | 2015-10-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20150259759A1 (en) | Method for heating process gases for direct reduction systems | |
EP3649264B1 (en) | Method for operating an iron- or steelmaking- plant | |
EP1641945B1 (en) | Method and apparatus for improved use of primary energy sources in integrated steel plants | |
CN113924372A (en) | Method and system for producing steel or molten iron-containing material with reduced emissions | |
US20230160028A1 (en) | Process for the Production of Carburized Sponge Iron | |
US20240052441A1 (en) | Smart hydrogen production for dri making | |
WO2021183022A1 (en) | Process for the production of sponge iron | |
US20170298461A1 (en) | Method for producing steel | |
CN105671228A (en) | Oxygen blast furnace and gas base shaft furnace combined production system and method | |
EP4032991A1 (en) | Smart hydrogen production for dri making | |
US20140083252A1 (en) | Reduction of metal oxides using gas stream containing both hydrocarbon and hydrogen | |
Pang et al. | The Low‐Carbon Production of Iron and Steel Industry Transition Process in China | |
DE102013104002A1 (en) | Process for heating process gases for direct reduction plants | |
GB2507246A (en) | Direct reduction of iron using a carbon monoxide-hydrogen mixture derived from carbon dioxide and water | |
CN105671229A (en) | Oxygen blast furnace and gas base shaft furnace combined production system and method | |
CN116888281A (en) | Intelligent hydrogen production for DRI manufacture | |
WO2023052308A1 (en) | Method for operating a shaft furnace plant | |
KR20230138002A (en) | Off-gas recovery from direct reduction process | |
EP4347898A1 (en) | Operating method of a network of plants | |
CN118019863A (en) | Method for operating a shaft furnace installation | |
WO2017185178A1 (en) | System and method of high pressure oxy-fired (hiprox) flash metallization |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VOESTALPINE STAHL GMBH, AUSTRIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WOLFMEIR, HERMANN;BUERGLER, THOMAS;SCHWAB, PETER;SIGNING DATES FROM 20150709 TO 20150730;REEL/FRAME:036239/0302 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |