• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    COMPLEX OF PLANTS FOR STEEL PRODUCTION AND METHOD FOR OPERATING THE COMPLEX OF PLANTS. The invention relates to a complex of steelmaking plants comprising a blast furnace (1) to produce acid pig iron, a steel converting plant (2) to produce crude steel and a gas-to-gas conduction system that occur in the production of acid pig iron and / or in the production of crude steel. According to the invention, the plant complex additionally has a chemical or biotechnological plant (11) connected to the gas conduction system and a plant (21) to produce hydrogen. The plant (21) for producing hydrogen is connected to the gas conduction system by a hydrogen transport line. Furthermore, the subject of the invention is a method for operating the plant complex.
    公开号:BR112016011093B1
    申请号:R112016011093-5
    申请日:2014-12-11
    公开日:2021-02-17
    发明作者:Reinhold Achatz；Jens Wagner；Markus Oles；Peter Schmöle；Ralph Kleinschmidt；Matthias Patrick Krüger；Denis Krotov；Olaf Von Morstein
    申请人:Thyssenkrupp Ag；
    IPC主号:
    专利说明:

    [0001] [001] The invention relates to a steelmaking complex and a method for operating the steelmaking complex.
    [0002] [002] The steelmaking plant complex comprises at least one blast furnace to produce acid pig iron, a steel converting plant to produce crude steel and a gas conduction system for gases that occur in the production of iron- pig iron and / or in the production of crude steel. The power plant complex may also have a power generation plant for electricity generation, which is designed as a gas turbine power plant or gas turbine or steam turbine power plant and is operated with a gas that comprises at least a partial amount of the top gas in the blast furnace that occurs in the production of acid pig iron in the blast furnace and / or a partial amount of the converter gas that occurs in the steel converting plant.
    [0003] [003] Acid pig iron is obtained in the blast furnace from iron ores, additives and also coke, and other reducing agents such as coal, oil, gas, biomass, recycled plastic waste or other substances that contain carbon and / or hydrogen. CO, CO2, hydrogen and water vapor inevitably occur as products of the reduction reactions. In addition to the aforementioned constituents, a blast furnace top gas extracted from the blast furnace process often has a high nitrogen content. The amount of gas and the composition of the top gas in the blast furnace are dependent on the raw material and the operating mode, and fluctuate. Typically, however, the blast furnace top gas contains 35 to 60% by volume of N2, 20 to 30% by volume of CO, 20 to 30% by volume of CO2 and 2 to 15% by volume of H2. Around 30 to 40% of the top blast furnace gas produced in the production of acid pig iron is generally used to heat hot air for the blast furnace process in air heaters; the remaining amount of top gas can be used externally in other areas of the plants for heating purposes or for electricity generation.
    [0004] [004] At the steel converting plant, which is disposed downstream of the blast furnace process, acid pig iron is converted into crude steel. By blowing oxygen over the liquid acid pig iron, harmful impurities like carbon, silicon, sulfur and phosphorus are removed. Since oxidation processes cause intense heat development, scrap is often added in quantities of up to 25% compared to acid pig iron as a refrigerant. In addition, quicklime is added to form slag and a binding agent. A converter gas that has a high CO content and also contains nitrogen, hydrogen and CO2 is extracted from the steel converter. A typical converter gas composition has 50 to 70% by volume of CO, 10 to 20% by volume of N2, about 15% by volume of CO2 and about 2% by volume of H2. The converter gas is flared or, in the case of modern steel plants, captured and passed on to be used for energy supply.
    [0005] [005] The plant complex can optionally be operated in combination with a coking plant. In this case, the complex of plants described above further comprises a coke plant, in which the coal is converted into coke by a coking process. When cooking coal to form coke, a coke oven gas occurs, which contains a high hydrogen content and considerable amounts of CH4. Typically, coke oven gas contains 55 to 70% by volume of H2, 20 to 30% by volume of CH4, 5 to 10% by volume of N2 and 5 to 10% by volume of CO. In addition, the coke oven gas has fractions of CO2, NH3 and H2S. In practice, coke oven gas is used in various areas of the plants for heating purposes and in the process of generating energy for generating electricity. In addition, it is known to use coke oven gas together with top gas from the blast furnace or with converter gas to produce synthesis gases. According to a method known from WO 2010/136313 A1, the coke oven gas is separated into a gas stream rich in hydrogen and a stream of residual gas containing CH4 and CO, in which the stream of residual gas and it is fed in the blast furnace process and the hydrogen-rich gas stream is mixed with top blast furnace gas and further processed to form a synthesis gas.
    [0006] [006] It is known from EP 0 200 880 A2 the mixture of converter gas and coke oven gas and the use of them as a synthesis gas for methanol synthesis.
    [0007] [007] In an integrated metallurgical plant that is operated in combination with a coking plant, approximately 40 to 50% of the raw gases that occur as blast furnace top gas, converter gas and coke oven gas are used for processes chemical engineering. Approximately 50 to 60% of the gases produced are fed into the power generation plant and used to generate electricity. The electricity produced at the power generation plant meets the electricity demand for the production of acid pig iron and crude steel. Ideally, the energy balance is closed, so that, in addition to iron and carbon ores in the form of coal and coke as energy sources, no additional energy input is required and, in addition to crude steel and slag, no product leaves the power plant complex.
    [0008] [008] Against this background, the invention is based on the objective of further improving the economics of the process as a whole and providing a complex of plants with which it is possible to reduce costs for steel production.
    [0009] [009] From a complex of steelmaking plants that comprise a blast furnace to produce acid pig iron, a steel converting plant to produce crude steel and a gas conduction system for gases that occur in iron production acid pig iron and / or in the production of crude steel, according to the invention, a chemical or biotechnological plant connected to the gas conduction system and a plant to produce hydrogen are provided, in which the plant to produce hydrogen is connected to the system conducting gas through a hydrogen transport line. Advantageous adjustments of the plant complex according to the invention are described in patent claims 2 to 6.
    [0010] [010] Furthermore, the subject of the invention is a method, as defined in claim 7, for operating a steelmaking complex to produce steel that has at least one blast furnace to produce acid pig iron, a steel converting plant, a chemical plant or biotechnological plant and a plant to produce hydrogen. According to the method according to the invention, at least a partial amount of a blast furnace top gas that occurs in the production of acid pig iron in the blast furnace and / or a partial amount of a converter gas which occurs in the production of crude steel is used after a gas conditioning operation as a gas useful for producing chemicals in a chemical plant or biotechnological plant. The gas useful here, before being used as synthesis gas, is enriched with hydrogen which is formed at the plant to produce hydrogen. Converter gas or blast furnace top gas, or a mixed gas formed from blast furnace top gas and converter gas, can generate synthesis gases that consist essentially of CO and H2, of which the composition it is coordinated with a subsequent process at the chemical plant or the biotechnological plant. A specific addition of hydrogen that is produced within the plant complex makes it possible for the ratio of CO and hydrogen to be adjusted very precisely and varied by a wide parameter range.
    [0011] [011] In the chemical plant, chemicals can be produced from synthesis gases that contain the components of the final product respectively. The chemicals can be, for example, ammonia or methanol or other hydrocarbon compounds.
    [0012] [012] To produce ammonia, a synthesis gas that contains nitrogen and hydrogen in the correct ratio needs to be supplied. Nitrogen can be obtained from top gas in the blast furnace. The blast furnace top gas or converter gas can be used as the hydrogen source, where hydrogen is produced by converting the CO fraction by a water-gas displacement reaction (CO + H2O ⇌ CO2 + H2 ). To produce hydrocarbon compounds, for example, methanol, it is necessary to provide a synthesis gas that consists substantially of CO and / or CO2 and H2 that contains the components carbon monoxide and / or carbon dioxide and hydrogen in the correct ratio. The reason is often described by the module (H2 - CO2) / (CO + CO2). Hydrogen can be produced, for example, by converting the fraction of CO into the top gas in the blast furnace by a water-gas displacement reaction. Converter gas can be used to supply CO. The blast furnace top gas and / or converter gas can serve as a source of CO2.
    [0013] [013] In the case of the concepts described above, however, it is not possible for the C or N content of the mixed gas to be used in full, since there is a hydrogen limitation. In order to make it possible for the C content or the N content of the gases that occur during the production of acid pig iron and / or the production of crude steel to be used in full to produce chemicals, the invention is in the hydrogen that is formed in a power plant to produce hydrogen. Hydrogen is preferably produced by water electrolysis, in which water electrolysis is conveniently operated by electrical energy that has been produced from renewable energy. Water electrolysis also produces oxygen that can be used in the blast furnace to produce acid pig iron and / or in the steel converting plant to produce crude steel.
    [0014] [014] Furthermore, it is included in the scope of the invention that the synthesis gas is produced from converter gas and enriched with hydrogen. The hydrogen enrichment that is produced within the plant complex, according to the hydrogen requirement, makes it possible to adjust the H2 content of the converter gas to any desired value.
    [0015] [015] It is also possible to use blast furnace top gas and converter gas to produce a mixed gas which, after a gas conditioning and hydrogen enrichment operation, is used as a synthesis gas to produce chemicals. It is convenient that hydrogen is produced by electrolysis of water using electricity obtained from renewable energy.
    [0016] [016] Within the scope of the invention, a biotechnological plant can also be used instead of a chemical plant to produce products from synthesis gas. The plant in question is a plant for the synthesis gas fermentation. Synthesis gas is used biochemically through a fermentation process, making it possible to produce products such as alcohols (ethanol, butanol), acetone or organic acids. These products, which are produced by the fermentation of synthesis gas, are also only mentioned by way of example in the present case.
    [0017] [017] According to a preferred embodiment of the invention, the plant complex additionally comprises a coke oven plant. If the production of acid pig iron and the production of crude steel are operated in combination with a coking plant, a partial amount of the top gas in the blast furnace that occurs in the production of acid pig iron and / or a partial amount of the converter gas that occurs in the steel converting plant can be mixed with a partial amount of the coke oven gas that occurs in the coke plant and the mixed gas can be used as a useful gas. A mixture of coke oven gas and blast furnace top gas or a mixed gas comprising coke oven gas, converter gas and blast furnace top gas can be used as a useful gas to produce a synthesis gas, for example example, for ammonia synthesis. A mixed gas comprising coke oven gas and converter gas or a mixed gas comprising coke oven gas, converter gas and blast furnace top gas is suitable for producing hydrocarbon compounds. The described chemicals that can be produced in a chemical plant from top blast furnace gas, converter gas and coke oven gas are just application examples to explain the variations in the method that are described in the patent claims.
    [0018] [018] The crude gases - coke oven gas, converter gas and top gas from the blast furnace - can be conditioned individually or in combinations as a mixed gas and then fed into the chemical plant as synthesis gases. Conditioning of coke oven gas, in particular, comprises cleaning the gas to separate problematic contents, in particular tar, sulfur and sulfur compounds, aromatic hydrocarbons (BTX) and hydrocarbons with a high boiling point. A gas conditioning operation is also necessary to produce the synthesis gas. In the course of gas conditioning, the proportion of the CO, CO2 and H2 components within the crude gas is changed. The gas conditioning comprises, for example, adsorption with pressure oscillation to separate and enrich H2 and / or a water-gas displacement reaction to convert CO into hydrogen and / or a steam reformer to convert the fraction of CH4 to CO and hydrogen in the coke oven gas.
    [0019] [019] According to a preferred embodiment of the invention, the power plant complex comprises a power generation plant for electricity generation which is designed as a gas turbine power generation plant or a turbine power generation plant. steam or gas turbine with a gas that comprises at least a partial amount of the top gas in the blast furnace that occurs in the production of acid pig iron in the blast furnace and / or a partial amount of the converter gas that occurs in the plant steel converter. The power generation plant for electricity generation and the chemical plant or biotechnological plant are connected in parallel, as seen in relation to the gas flow guide. The gas vapors that are fed into the power generation plant, on the one hand, and the chemical or biotechnological plant, on the other hand, can be controlled.
    [0020] [020] In the case of the method according to the invention, at least a partial amount of the blast furnace top gas that occurs in the production of acid pig iron in the blast furnace and / or a partial amount of the converter gas that it occurs in the steel converting plant and is used as crude gas in order to produce products, that is, substances of value, from them by chemical reactions in a chemical plant or by biochemical processes in a biotechnological plant. As a consequence of the use of part of these gases, the power plant complex has a deficit of electricity, which needs to be obtained externally. The externally obtained electricity can originate from conventional power generation plants or be obtained from renewable energy sources. Preferably, the externally obtained electricity is obtained completely or at least partially from renewable energy and originates, for example, from wind turbine generator plants, solar plants, geothermal power plants, hydroelectric power plants , tidal power generation plants and the like. To achieve the operation of the plant complex that is as economical as possible, at times of low electricity price, electricity is purchased and used to supply the plant complex and the portion of the useful gas that is not used to produce electricity is used. to produce chemicals after a gas conditioning operation at the chemical plant or biotechnology plant. At times of high electricity prices, on the other hand, the useful gas is completely or at least mostly fed into the power generation plant in order to produce electricity to supply the plant complex. The chemical plant or biotechnological plant is correspondingly operated at a lower outlet at times of high electricity prices. The same applies to electrolysis of water operated with electrical energy. If, in the case of high electricity prices, the chemical plant is operated at a lower outlet, it is also the case that the required hydrogen level is low. If, in contrast, in the case of low electricity prices, the chemical plant is operated with a high output of production, it is also possible that hydrogen is produced economically by water electrolysis. A closed-loop control system is provided to operate the method, establishing the alternate operation of the power generation plant on the one hand and the chemical plant or biotechnological plant on the other hand depending on a variable process parameter. The process parameter is preferably determined depending on a function that includes the price for externally obtained electricity and the costs for producing electricity from the power generation plant as variables.
    [0021] [021] The method according to the invention makes it possible for the plant complex to be operated economically. Hereby, the method according to the invention also makes use, in particular, of the fact that the efficiency of an energy generation process to produce electricity is worse than the efficiency of a chemical plant or a biotechnological plant in which chemicals are produced by chemical reactions or biochemical processes using synthesis gas.
    [0022] [022] The energy output of the chemical plant or the biotechnological plant is controlled depending on the amount of synthesis gas fed in that plant. A major challenge for the chemical plant is to find a way to operate dynamically with changing plant loads. The way of operating with the change of plant loads can be carried out, in particular, by the chemical plant which has a plurality of small units arranged in parallel, which are individually turned on or off depending on the available stream of useful gas.
    [0023] [023] The use of a biotechnology plant has the advantage that a biotechnology plant is more flexible in terms of load changes than a chemical plant.
    [0024] [024] The invention also encompasses the use of a chemical or biotechnological plant for coupling to a metallurgical plant according to claim 18.
    [0025] [025] The invention is explained below on the basis of a drawing that represents merely an exemplary modality. Schematically,
    [0026] [026] Figure 1 shows a considerably simplified block diagram of a steelmaking plant complex comprising a blast furnace to produce acid pig iron, a steel converting plant to produce crude steel, a power generation plant , a chemical or biotechnological plant and a plant to produce hydrogen,
    [0027] [027] Figure 2 shows the considerably simplified block diagram of a complex of plants that, in addition to a blast furnace to produce acid pig iron, a steel converting plant to produce crude steel, a power generation plant, a chemical or biotechnological plant and a plant to produce hydrogen, also comprises a coke plant.
    [0028] [028] The steelmaking plant complex shown in Figure 1 comprises a blast furnace 1 to produce acid pig iron, a steel converting plant 2 to produce crude steel, a power generation plant 3 for generation electricity and a chemical or biotechnological plant 11.
    [0029] [029] In blast furnace 1, acid pig iron 6 is obtained substantially from iron ore 4 and reducing agents 5, in particular coke and coal. The reduction reactions cause the production of a top gas from the blast furnace 7, which contains nitrogen, CO, CO2 and H2 as the main constituents. At steel converting plant 2, which is disposed downstream of the blast furnace process, acid pig iron 6 is converted into crude steel 8. Through the blowing of oxygen over liquid acid pig iron, problematic impurities, in particular , carbon, silicon and phosphorus, are removed. For cooling, the scrap can be added in quantities of up to 25% in relation to the amount of acid pig iron. In addition, quicklime is added to form slag and a binding agent. At the top of the converter, a converter gas 9 that has a very high proportion of CO is extracted.
    [0030] [030] Power generation plant 3 is designed as a gas turbine power plant or gas turbine or steam turbine power plant and is operated with a gas comprising at least a quantity partial top gas from blast furnace 7 that occurs in the production of acid pig iron in blast furnace 1 and / or a partial amount of converter gas 9 that occurs in steel converting plant 2. A gas conduction system is provided to transport the gases.
    [0031] [031] According to the general balance represented in Figure 1, carbon is fed into the plant complex as a reducing agent 5 in the form of coal and coke and also iron ore 4. Occurring as products are crude steel 8 and crude gases 7, 9, which differ in quantity, composition, calorific value and purity and are used again at various points in the plant complex. In general, 40 to 50%, usually approximately 45%, of crude gases 7, 9 are returned to the metallurgical process to produce acid pig iron or to produce crude steel. Between 50 and 60%, usually approximately 55%, of the raw gases 7, 9 can be used to operate the power generation plant 3. The power generation plant 3 operated with a mixed gas 10 comprising top and top gas - furnace 7 and converter gas 9 is designed in a way that can cover the electricity demand of the power plant complex.
    [0032] [032] According to the representation in Figure 1, a chemical or biotechnological plant 11 is supplied, connected to the gas conduction system and arranged in parallel with the power generation plant 3 in relation to the gas supply. The gas conduction system has an operationally controllable gas shunt 12 to divide the gas streams that are fed into the power generation plant 3 and the chemical or biotechnological plant 11. Supplied upstream of the gas shunt in the flow direction is a mixing device 13 for producing the mixed gas 10 consisting of top gas from the blast furnace 7 and converter gas 9.
    [0033] [033] In the case of the plant complex represented in Figure 1, at least a partial amount of the top gas in the blast furnace 7 that occurs in the production of acid pig iron in the blast furnace 1 and a partial amount of the converter gas 9 that occurs in the production of crude steel are used as a useful gas to operate the power generation plant 3 and the chemical or biotechnological plant 11. The externally obtained electricity 14 and the electricity from the power generation plant 15, which is produced by the power generation plant 3 of the plant complex, are used to cover the electricity demand of the plant complex. The proportion of electricity considered by the externally obtained electricity 14 in relation to the general electricity demand of the plant complex is established as a variable process parameter and the amount of useful gas N1 fed in the power generation plant 3 is determined depending on this parameter of process. The portion of the useful gas N2 that is not used to produce electricity is used after a gas conditioning operation as a synthesis gas to produce chemicals 16 or is fed after a gas conditioning operation at the biotechnology plant and used for biochemical processes .
    [0034] [034] The externally obtained electricity 14 is preferably obtained completely or at least partially from renewable energy and originates, for example, from wind turbine generator plants, solar plants, hydroelectric power generation plants and the like . The process parameter on the basis of which the amount of useful gas N1 that is fed into the power generation process is determined depending on a function that includes the price for the externally obtained electricity and the costs for producing the electricity from the power plant. power generation 15 as variables. To achieve the operation of the plant complex that is as economical as possible, at times of low electricity prices, electricity is purchased as external electricity 14 and used to supply electricity to the plant complex, in which part of the useful gas N2 that is not used to produce electricity is fed to the chemical or biotechnological plant 11 and used to produce chemicals 16 after a gas conditioning operation. In times of high electricity prices, the crude gases 7, 9 that occur in the production of acid pig iron and in the production of crude steel are fed into the power generation plant 3 in order to produce electricity to supply the plant complex . Chemical plant 11 or the alternatively supplied biotechnology plant is correspondingly operated at a lower outlet at times of high electricity prices.
    [0035] [035] In order for the carbon content and nitrogen content of the raw gases that occur during the operation of the plant complex to be used in full to produce chemicals, the hydrogen needs to be fed in order to compensate for a hydrogen limitation. The plant complex, therefore, additionally has a plant 21 for producing hydrogen, which is connected to the gas conduction system by a hydrogen transport line 22. Plant 21 for producing hydrogen can be, in particular, an electrolysis plant for water electrolysis. A water electrolysis uses energy intensively for its operation and is therefore mainly put into operation at times of low electricity prices, when the chemical plant 11 or the biotechnological plant is also operated and the power generation plant 3 is operated at a lower outlet. The hydrogen that is additionally produced is fed to chemical plant 11 along with the useful gas as synthesis gas. This allows the capacity of chemical plant 11 to be increased significantly. The same applies correspondingly if a biotechnology plant is supplied instead of the chemical plant 11.
    [0036] [036] In the exemplary embodiment of Figure 2, the plant complex additionally comprises a coking plant 17. In coking coal 18 to form coke 19, coking plant gas 20 occurs, containing a high proportion of hydrogen and CH4. Parts of the coke oven 20 can be used for heating the air heaters in the blast furnace 1. The gas conduction system includes a gas distribution for the coke oven gas 20. Supplied upstream of the gas tap 12 in the direction The flow device is a mixing device 13, to produce a mixed gas 10 consisting of top gas from the blast furnace 7, converter gas 9 and coke oven gas 20. With the gas tapper 12, the gas streams that are fed to the power generation plant 3 and to the chemical or biotechnological plant 11 can be controlled.
    [0037] [037] During the operation of the plant represented in Figure 2, a partial amount of the top gas in the blast furnace 7 that occurs in the production of acid pig iron and / or a partial amount of the converter gas 9 that occurs in the converter plant of steel are mixed with a partial amount of the coke oven gas 20 that occurs in the coke oven plant 17. The mixed gas 10 is used to operate the power generation plant 3 and, after a gas conditioning and hydrogen enrichment operation, as synthesis gas at chemical plant 11 or at the biotechnological plant.
    [0038] [038] The blast furnace top gas 7, converter gas 9 and coke oven gas 20 can be combined with each other in any desired manner. The combination of gas streams 7, 9, 20 depends on the desired synthesis gas or the product that must be produced from the synthesis gas at chemical plant 11 or at the biotechnological plant. Additional enrichment with hydrogen, which is preferably produced by water electrolysis at plant 21, takes place here.
    权利要求:
    Claims (15)
    [0001]
    Steel mill complex comprising: a blast furnace (1) to produce acid pig iron, a steel converting plant (2) to produce crude steel, a gas conduction system for gases occurring in the production of acid pig iron and / or in the production of crude steel, characterized in that the plant complex additionally comprises a chemical plant (11) or biotechnological plant connected to the gas conduction system and a plant (21) to produce hydrogen, where the plant (21) to produce hydrogen is connected to the conduction system of gas by a hydrogen transport line (22), in which the plant complex additionally comprises a power generation plant (3) which is designed as a gas turbine power generation plant or power generation plant gas turbine or steam turbine and is operated with a gas that comprises at least a partial amount of the top gas in the blast furnace that occurs in the production of acid pig iron in the blast furnace (1) and / or a partial amount of the converter gas (2) that occurs in the steel converting plant, and the gas conduction system comprises a pluggable gas tap (12) to divide the gas streams that are fed into the power generation plant (3 ) and at the chemical plant (11) or biotechnological plant.
    [0002]
    Plant complex according to claim 1, characterized in that the hydrogen transport line (22) is connected to a mixing device (13), which is arranged upstream of the chemical or biotechnological plant (11), as seen in flow direction, and in which a gas stream that is fed into the mixing device (13) is enriched with hydrogen.
    [0003]
    Plant complex according to claim 1 or 2, characterized in that the chemical plant (11) or biotechnological plant is connected to a converter gas line, and that the hydrogen transport line (22) is connected to the converter gas, so that the converter gas, for use in the chemical plant (11) or in the biotechnological plant, can be enriched with hydrogen.
    [0004]
    Plant complex according to any one of claims 1 to 3, characterized in that the plant (21) for producing hydrogen has an electrolysis plant for water electrolysis.
    [0005]
    Plant complex according to claim 4, characterized in that the electrolysis plant is connected to the blast furnace (1) and / or to a plant to produce crude steel by means of an oxygen return device.
    [0006]
    Method characterized by serving to operate a plant complex that has a blast furnace (1) to produce acid pig iron, a steel converting plant (2), a chemical plant (12) or a biotechnological plant and a plant (21) to produce hydrogen, a) at least a partial amount of a blast furnace top gas that occurs in the production of acid pig iron in the blast furnace (1) and / or a partial amount of a converter gas that occurs in the production of crude steel which is used, after a gas conditioning operation, as a gas useful for producing chemicals (16), b) in which the useful gas, before being used as synthesis gas, is enriched with hydrogen which is formed at the plant (21) to produce hydrogen, where a portion of the useful gas is fed into a power generation plant (3) and used for electricity generation, where the power generation plant (3) and the chemical or biotechnological plant (11) are connected in parallel , and in which the gas streams that are fed in the power generation plant (3), on the one hand, and in the chemical or biotechnological plant (11), on the other hand, are controlled.
    [0007]
    Method according to claim 6, characterized in that the synthesis gas is produced from converter gas and is enriched with hydrogen.
    [0008]
    Method according to claim 6, characterized in that the blast furnace top gas and the converter gas are used to produce a mixed gas which, after a gas conditioning and hydrogen enrichment operation, is used as synthesis to produce chemical products or in the biotechnological plant for biochemical processes.
    [0009]
    Method according to any one of claims 6 to 8, characterized in that the hydrogen is produced by water electrolysis.
    [0010]
    Method according to claim 9, characterized in that the water electrolysis is operated by electrical energy that was produced from renewable energy.
    [0011]
    Method according to claim 9 or 10, characterized in that the oxygen formed during the electrolysis of water is used inside the blast furnace (1) to produce acid pig iron and / or in the steel converting plant (2) to produce crude steel.
    [0012]
    Method according to any one of claims 6 to 11, characterized in that the amount of H2 produced is such that the entire fraction of carbon and nitrogen in the useful gas can be used for conversion into chemicals.
    [0013]
    Method according to any one of claims 6 to 12, characterized in that 5% to 60% of the amount of gas that occurs as a top gas in the blast furnace during the production of acid pig iron and / or as a converter gas in the steel converting plant (2) to be fed at the chemical or biotechnological plant (11) and used to produce chemicals (16).
    [0014]
    Method according to any one of claims 6 to 13, characterized in that the coke oven gas is mixed by addition with the useful gas.
    [0015]
    Method according to any one of claims 6 to 14, characterized in that the output of the power generation plant (3) is reduced for partial load or base load operation, and the gas stream fed to the power generation plant (3) be restricted accordingly, if the price of electricity for electricity obtained from renewable energy is a predetermined factor less than the costs of the energy produced in the power generation plant (3).
    类似技术:
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    同族专利:
    公开号 | 公开日
    UA119336C2|2019-06-10|
    TWI641692B|2018-11-21|
    ES2808865T3|2021-03-02|
    AU2019202471A1|2019-05-02|
    CA2930470C|2018-09-25|
    RU2670822C1|2018-10-25|
    DE102013113921A1|2015-06-18|
    RU2670822C9|2018-11-29|
    WO2015086153A1|2015-06-18|
    PL3080308T3|2020-11-02|
    US10604816B2|2020-03-31|
    KR20210040469A|2021-04-13|
    EP3080308A1|2016-10-19|
    CA2930470A1|2015-06-18|
    CN105960469B|2019-02-22|
    AU2014361208A1|2016-07-14|
    US20160304978A1|2016-10-20|
    TW201533245A|2015-09-01|
    AU2019202471B2|2020-09-17|
    KR20160098226A|2016-08-18|
    MX2016006185A|2016-09-13|
    EP3080308B1|2020-05-06|
    CN105960469A|2016-09-21|
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    法律状态:
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-09-08| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-12-08| B09A| Decision: intention to grant|
    2021-02-17| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 11/12/2014, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102013113921.3A|DE102013113921A1|2013-12-12|2013-12-12|Plant network for steelmaking and process for operating the plant network|
    DE102013113921.3|2013-12-12|
    PCT/EP2014/003319|WO2015086153A1|2013-12-12|2014-12-11|Combined system for producing steel and method for operating the combined system|
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