• 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, a gas-to-gas conduction system that occur in the production of acid pig iron and / or in the production of crude steel and also a power generation plant (3) for electricity generation. The power generation plant (3) is operated with a gas that comprises 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 / or a partial amount of the converter gas (9) that occurs in the steel converter plant (2). According to the invention, 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 comprises an operationally controllable gas tap (13) to divide the gas streams that are fed into the power generation plant (3) and the (...).
    公开号:BR112016012681B1
    申请号:R112016012681-5
    申请日:2014-12-11
    公开日:2021-02-09
    发明作者:Reinhold Achatz；Jens Wagner；Markus Oles；Peter Schmöle；Ralph Kleinschmidt；Bärbel Kolbe；Patrick Matthias Krüger；Christoph Meißner
    申请人:Thyssenkrupp Ag；
    IPC主号:
    专利说明:

    [001] The invention relates to a steelmaking complex and a method for operating the steelmaking complex.
    [002] The steelmaking plant complex comprises a blast furnace to produce acid pig iron, a steel converting plant to produce crude steel, a gas conduction system for gases that occur in the production of acid pig iron and / or in the production of crude steel and also a power generation plant for electricity generation. The power generation plant is designed as a gas turbine power generation plant or a gas turbine or steam turbine power generation plant that is operated with a gas that comprises at least a partial amount of the gas top of 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.
    [003] Acid pig iron is obtained in the blast furnace from iron ores, additives such as 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 also be used externally in other areas of the plants for heating purposes or for electricity generation.
    [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 onto the liquid acid pig iron, harmful impurities such as 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. Converter gas is flared or, in the case of modern steel plants, captured and refined to be used for energy supply.
    [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.
    [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.
    [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 process 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.
    [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.
    [009] Proceeding from a complex of plants to produce steel that comprises a blast furnace to produce acid pig iron, a steel converting plant to produce crude steel, a gas conduction system for gases that occur in the production of acid pig iron and / or in the production of crude steel, and a power generation plant for electricity generation, according to the invention, a chemical or biotechnological plant is supplied, connected to the gas conduction system and arranged in parallel with the power generation plant in relation to gas supply. According to the invention, the gas conduction system comprises an operationally controllable gas tap to divide the gas streams that are fed into the power generation plant and the chemical or biotechnological plant. Advantageous adjustments to the plant complex according to the invention are described in claims 2 to 5.
    [010] Furthermore, the subject of the invention is a method, as defined in claim 6, for operating a plant complex that has a blast furnace to produce acid pig iron, a steel converting plant, a power generation plant and a chemical plant or biotechnological plant. According to the method of 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 occurs in the production of steel crude is used as a useful gas to operate the power generation plant and the chemical plant or biotechnological plant. The externally obtained electricity and electricity from the power generation plant, which is produced by the power plant in the power plant complex, are used to cover the power demand of the power plant complex. This involves establishing the proportion of electricity considered by the externally obtained electricity in relation to the overall electricity demand of the plant complex as a variable process parameter and establishing the amount of useful gas fed in the power generation process depending on this process parameter . The portion of the useful gas that is not used for electricity generation is used after a gas conditioning operation as a synthesis gas to produce chemicals or is fed after a gas conditioning operation at the biotechnology plant and used for biochemical processes.
    [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.
    [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.
    [013] Within the scope of the invention, a biotechnology 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.
    [014] 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 to produce a synthesis gas, for example, for synthesis of ammonia. 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 only application examples to explain the variations of the method that are described in patent claims 7 to 10.
    [015] 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.
    [016] 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. According to a preferred embodiment of the invention, the plant is operated in combination with a coke plant and the coke oven gas is integrated into the use. 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 useful gas that is not used for electricity generation is used to produce chemicals after a gas conditioning operation at a chemical plant and / or a 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. 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 to produce electricity from the power generation plant as variables.
    [017] 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.
    [018] The energy output of the power generation plant can be controlled between 20% and 100%, depending on the amount of useful gas fed in the power generation process. A gas turbine power generation plant or gas turbine and steam turbine power generation plant is preferably used as the power generation plant.
    [019] The energy output of the chemical plant or the biotechnological plant is controlled depending on the amount of mixed gas fed in these plants. 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.
    [020] 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.
    [021] The invention also encompasses the use of a chemical plant for coupling to a metallurgical plant, as defined in claim 17, and the use of a biotechnological plant for coupling to a metallurgical plant corresponds to claim 18.
    [022] The invention is explained below based on a drawing that represents merely an exemplary modality. Schematically,
    [023] Figure 1 shows a considerably simplified block diagram of a steelmaking plant complex comprising a blast furnace to produce acid pig iron and a steel converting plant to produce crude steel, a power generation plant and a chemical or biotechnological plant,
    [024] Figure 2 shows the considerably simplified block diagram of a plant complex that comprises, in addition to a blast furnace to produce acid pig iron and a steel converting plant to produce crude steel, a power generation plant and a chemical or biotechnological plant in addition to a coke oven plant,
    [025] Figure 3 shows the block diagram of a plant complex that corresponds to Figure 2 with an additional plant to produce hydrogen.
    [026] The steelmaking plant complex that is represented 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.
    [027] 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.
    [028] 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.
    [029] 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%, usual and approximately 45%, of crude gases 7, 9 are returned back 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.
    [030] 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.
    [031] In the case of the power plant complex shown 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 useful gas N2 that is not used for electricity generation 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 processes biochemicals.
    [032] 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 power 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 power plant complex, in which the useful gas portion N2 which 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.
    [033] The energy output of power generation plant 3 is controlled between 20% and 100%, depending on the amount of useful gas N1 fed in the power generation process. The energy output of chemical plant 11 or the biotechnological plant is controlled depending on the amount of N1 useful gas fed in that plant. A major challenge for chemical plant 11 is to find a way to operate dynamically with changing loads. This can be accomplished by chemical plant 11 which has a plurality of small units arranged in parallel, which are individually turned on or off depending on the available amount of useful gas N2.
    [034] 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 A flow device 13 is used 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 tap, the gas streams that are fed in the power generation plant 3 and in the chemical or biotechnological plant 11 they can be controlled.
    [035] 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 as a useful gas to operate the power generation plant 3 and the chemical plant 11 or biotechnological plant.
    [036] 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 at chemical plant 11 or at the biotechnological plant through the use of synthetic gas.
    [037] For example, it is possible, within the scope of the invention, for the blast furnace top gas 7 and converter gas 9 to be mixed, for a synthesis gas to be produced from the mixed gas after a conditioning gas and that the conditioned coke oven gas 20 is further mixed by addition with the synthesis gas or the clean mixed gas before further processing to form the synthesis gas.
    [038] In addition, there is a possibility that a synthesis gas is produced from the blast furnace top gas 7 after a gas conditioning operation and that the conditioned coke oven gas 20 is additionally mixed by addition with the synthesis gas or clean top gas from the blast furnace before further processing to form the synthesis gas.
    [039] Finally, there is a possibility that a synthesis gas is produced from the converter gas 9 after a gas conditioning operation and that the conditioned coke oven gas 20 is further mixed by addition with the synthesis gas or the converter gas cleaned before further processing to form the synthesis gas.
    [040] In the case of the operational mode represented in Figures 1 and 2, the carbon content and the nitrogen content of the raw gases that occur during the operation of the plant complex cannot be completely to produce chemical products, since there is a deficit of hydrogen. In order to use the carbon content and nitrogen content of the gas completely useful for the production of valuable chemical substances, the plant complex represented in Figure 3 additionally has a plant 21 to produce hydrogen, which is connected to the conduction system of gas by a hydrogen transport line 22. Plant 21 to produce 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 together with the mixed 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.
    权利要求:
    Claims (18)
    [0001]
    1. Steelmaking plant 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 that occur in production of acid pig iron and / or in the production of crude steel, a power generation plant (3) for electricity generation, in which the power generation plant (3) is designed as a turbine power generation plant gas or steam turbine and 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 (7) that occurs in the production of acid pig iron in the blast furnace and / or a partial amount of the converter gas (9) that occurs in the steel converting plant (2), characterized by a chemical or biotechnological plant (11) being supplied, connected to the gas conduction system and disposed in parallel with the power generation plant (3) in relation to gas supply, and in which the The gas conduction system comprises an operationally controllable gas tap (12) to divide the gas streams that are fed into the power generation plant (3) and the chemical or biotechnological plant (11), in which externally obtained electricity (14) ) and 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, where 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 process depending on this process parameter which is established, where the part 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 or is fed after a gas conditioning operation at the biotechnology plant and used for biochemical processes.
    [0002]
    2. Plant complex according to claim 1, characterized in that the plant complex additionally comprises a coke oven plant (17) and in which the gas conduction system includes a gas distribution for coke oven gas (20) that occurs in a coking plant at the coking plant (17).
    [0003]
    Plant complex according to claim 1 or 2, characterized in that the gas conduction system has upstream of the gas tap (12) in the flow direction a mixing device (13) to produce a mixed gas (10 ) consisting of top gas from the blast furnace (7) and / or converter gas (9) and / or coke oven gas (20), and in which the gas streams that are fed into the power generation plant ( 3) and in the chemical or biotechnological plant (11) can be controlled by means of the gas tap (12).
    [0004]
    Plant complex according to any one of claims 1 to 3, characterized in that the plant complex additionally has a plant (21) to produce hydrogen, which is connected to the gas conduction system by a hydrogen transport line ( 22).
    [0005]
    5. Plant complex according to claim 4, characterized in that the plant (21) to produce hydrogen is an electrolysis plant for water electrolysis.
    [0006]
    6. 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 power generation plant (3) and a chemical or biotechnological plant (11), a) 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 / or a partial amount of the converter gas (9) that occurs in the production of crude steel is used as a useful gas to operate the power generation plant (3) and the chemical plant or biotechnological plant (11), b) externally obtained electricity (14) and electricity from power generation plant (15), which is produced by the power generation plant (3) of the power plant complex, are used to cover the power demand of the power plant complex. c) 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 process depending on of this process parameter that is established, d) the part 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 or is fed after a gas conditioning in the biotechnological plant and used for biochemical processes.
    [0007]
    Method according to claim 6, characterized in that the complex of plants additionally comprises a coke oven plant (17) and in which a partial amount of the top gas in the blast furnace (7) that occurs in the production of ferro-iron acid pig iron and / or a partial amount of the converter gas (9) that occurs in the steel converting plant (2) is mixed with a partial amount of the coking plant gas (20) that occurs in the coking plant (17) and in which the mixed gas (10) is used as a useful gas.
    [0008]
    Method according to claim 7, characterized in that the top gas of the blast furnace (7) and the converter gas (9) are mixed, in which a synthesis gas is produced from the mixed gas (10) after a gas conditioning operation and in which the conditioned coke oven gas (20) is mixed by addition with the synthesis gas or the clean mixed gas (11) before further processing to form the synthesis gas.
    [0009]
    Method according to claim 7, characterized in that a synthesis gas is produced from top gas in the blast furnace (7) after a gas conditioning operation and in which the conditioned coke oven gas (20) is additionally mixed by addition with the synthesis gas or clean blast furnace top gas before further processing to form the synthesis gas.
    [0010]
    Method according to claim 7, characterized in that a synthesis gas is produced from converter gas (9) after a gas conditioning operation and in which the conditioned coke oven gas (20) is additionally mixed by addition with the synthesis gas or the clean converter gas before further processing to form the synthesis gas.
    [0011]
    Method according to any one of claims 6 to 10, characterized in that the externally obtained electricity (14) is obtained completely or at least partially from renewable energy.
    [0012]
    12. Method according to any one of claims 6 to 11, characterized in that the process parameter is determined depending on a function that includes the price for the externally obtained electricity (14) and the costs for producing the electricity generation plant (15) as variables.
    [0013]
    13. Method according to claim 12, characterized in that the energy output of the power generation plant (3) is controlled between 20% and 100%, depending on the amount of useful gas (N1) fed in the power generation process .
    [0014]
    Method according to any one of claims 6 to 13, characterized in that a gas turbine and steam turbine power generation plant is used as the gas turbine generation plant. energy (3).
    [0015]
    Method according to any one of claims 6 to 14, characterized in that the energy output of the chemical plant (11) or the biotechnological plant is controlled depending on the amount of mixed gas (N2) fed in that plant.
    [0016]
    16. Method according to claim 15, characterized in that the chemical plant (11) has a plurality of small units arranged in parallel, which are individually turned on or off depending on the available stream of useful gas.
    [0017]
    17. Use of a chemical plant according to any one of claims 6 to 16, characterized in that it serves for coupling to a metallurgical plant that comprises a blast furnace (1) to produce acid pig iron, a steel converting plant (2 ) and a coke oven plant (17), with the proviso that 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 steel converting plant (2) and / or a partial amount of the coking plant gas (20) that is extracted from the coking plant (17) are fed as useful gas in the chemical plant (11) and used to produce products chemicals (16).
    [0018]
    18. Use of a biotechnological plant according to any one of claims 6 to 16, characterized in that it serves for coupling to a metallurgical plant that comprises at least one blast furnace (1) to produce acid pig iron, a steel converting plant (2) and a coke oven plant (17), with the proviso that 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 steel converting plant and / or a partial amount of the coking plant gas (20) that is extracted from the coking plant (17) are fed into a biotechnological plant and used for biochemical processes.
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    同族专利:
    公开号 | 公开日
    EP3080309A1|2016-10-19|
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    MX2016006968A|2017-01-20|
    CN106029913A|2016-10-12|
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    法律状态:
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-12-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-09| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|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
    DE102013113913.2A|DE102013113913A1|2013-12-12|2013-12-12|Plant network for steelmaking and process for operating the plant network|
    DE102013113913.2|2013-12-12|
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