EP3673088A1 - Ensemble d'installations pour la production de fonte brute procédé permettant le fonctionnement de l'ensemble d'installations - Google Patents

Ensemble d'installations pour la production de fonte brute procédé permettant le fonctionnement de l'ensemble d'installations

Info

Publication number
EP3673088A1
EP3673088A1 EP17784885.0A EP17784885A EP3673088A1 EP 3673088 A1 EP3673088 A1 EP 3673088A1 EP 17784885 A EP17784885 A EP 17784885A EP 3673088 A1 EP3673088 A1 EP 3673088A1
Authority
EP
European Patent Office
Prior art keywords
plant
line system
gas
gas line
carbon dioxide
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.)
Withdrawn
Application number
EP17784885.0A
Other languages
German (de)
English (en)
Inventor
Matthias Krüger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
Original Assignee
ThyssenKrupp AG
ThyssenKrupp Industrial Solutions AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp AG, ThyssenKrupp Industrial Solutions AG filed Critical ThyssenKrupp AG
Publication of EP3673088A1 publication Critical patent/EP3673088A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/002—Evacuating and treating of exhaust gases
    • 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
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a plant network for pig iron production and a method for operating the plant network.
  • a plant network comprises a furnace for producing pig iron, a furnace gas line system for at least one furnace gas stream obtained in the production of pig iron, wherein the furnace gas stream has a composition comprising at least carbon monoxide and / or carbon dioxide and in particular nitrogen, a hydrogen source, a H 2 gas line system at least one hydrogen-containing gas flow stream emitted from the hydrogen source, at least one mixing device being provided for adjusting at least one mixed gas from the at least one furnace gas stream and the at least one hydrogen-containing gas stream stream emitted from the hydrogen source and having a mixed gas line system for the at least one mixed gas and a chemical plant the mixed gas line system is connected.
  • blast furnace route iron ores, aggregates and coke and other reducing agents such as coal, oil, gas, biomass, recycled waste plastics or other carbon and / or hydrogen-containing materials are used in the blast furnace to produce pig iron.
  • the products of the reduction reactions inevitably arise CO, C0 2 , and in particular hydrogen and water vapor.
  • a blast furnace top gas withdrawn from the blast furnace process which is also referred to as blast furnace gas and / or blast furnace gas, frequently has a high content of nitrogen in addition to the abovementioned constituents and may also contain impurities.
  • blast furnace top gas typically contains 35 to 60% by volume of N 2 , 20 to 30% by volume of CO, 20 to 30% by volume of CO 2 and 2 to 15% by volume of H 2 .
  • About 30 to 40% of the blast furnace gas produced during the production of pig iron usually becomes used for heating the hot blast for the blast furnace process in blast furnaces;
  • the remaining top gas can be used for example in other areas of the plant also externally for heating purposes or for power generation.
  • the plant network with a blast furnace can optionally be operated in conjunction with a coking plant.
  • the plant network described above additionally comprises a coke oven plant, in which coal is converted into coke by a coking process.
  • coke oven gas which contains a high hydrogen content and considerable amounts of CH 4 .
  • coke oven gas contains 55 to 70 vol.% H 2 , 20 to 30 vol.% CH 4 , 5 to 10 vol.% N 2, and 5 to 10 vol.% CO.
  • the coke oven gas shares in C0 2 , NH 3 and H 2 S.
  • coke oven gas is used, for example, in various plant areas for heating purposes and in the power plant process for generating electricity.
  • Koksofengas is separated into a hydrogen-rich gas stream and a CH 4 and CO contained residual gas stream, the residual gas stream is fed to the blast furnace process and the hydrogen-rich gas stream is mixed with blast furnace gas and further processed to a synthesis gas.
  • EP 0 200 880 A2 it is known to mix converter gas and coke oven gas and to use it as synthesis gas for a methanol synthesis.
  • the smelting furnace reduction route involves processes in which ores are reduced in a two-stage process. In the first stage, the ores are prereduced to sponge iron and in the second stage, the sponge iron using coal, possibly coke and Converted oxygen to pig iron.
  • a smelting furnace reduction method with a smelting reduction furnace for example, the Corex method and the Fi n ex method are known.
  • the exhaust gases produced in the smelting furnace reduction process typically contain 10 to 20% by volume of H 2 , 30 to 50% by volume of CO 2 , 0 to 5% by volume of CH 4 , 0 to 10% by volume of N 2 and 30 to 50 vol.% C0.
  • the direct reduction route relates to processes in which only the oxygen is extracted from the ores, and the gangue constituents of the ores remain in the so-called sponge iron.
  • the Midrex or HYL direct reduction process in particular, which produces sponge iron DRI (Direct Reduced Iron) or HBI (Hot Briquetted Iron) as solid, prereduced feedstock for downstream processes, are known.
  • This DRI or HBI is essentially melted down in electric arc furnaces, used as a scrap set in the oxygen steel converter, or used as HBI in blast furnaces in some cases to reduce the reductant demand and increase performance.
  • Reduction gas production occurs in most direct reduction processes by converting natural gas to hydrogen and carbon monoxide.
  • the object of the invention is to further improve the economy of the overall process and to provide a system component and / or process step that is as simplified as possible, uncomplicated and low-grade / low-level system composite, in which furnace gas is provided for further processing in a chemical plant, in particular for methanol synthesis becomes.
  • a plant network is to be specified, with which it is possible to reduce the costs of pig iron production.
  • furnace gas is to be used, which is obtained as a waste product in an industrial process.
  • the process steps should be chosen so that the gas components of the furnace gas are largely completely transferred and with the necessary for the chemical plant shares.
  • the subject of the invention is a system combination with a furnace for hot metal production, a furnace gas line system for at least one furnace gas flow stream, which is obtained in the production of pig iron, wherein the furnace gas flow rate has a composition comprising at least carbon monoxide and carbon dioxide, a hydrogen source, a H 2 gas line system for at least a hydrogen-containing gas flow stream emitted from the hydrogen source, at least one mixing device being provided for adjusting at least one mixed gas from the at least one furnace gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, the at least one mixing device being connected to the furnace gas line system and to the H 2 gas line system is connected and wherein the at least one adjusted mixed gas at least a stoichiometric mixing ratio of a dividend with the difference amount of the molar amounts Hydrogen as Minuend and carbon dioxide as subtrahend and from a divisor with the
  • Another object of the invention is a method for operating a plant network comprising a furnace for pig iron production, a furnace gas line system for at least one furnace gas stream obtained in the production of pig iron, wherein the furnace gas stream has a composition comprising at least carbon monoxide and carbon dioxide, a source of hydrogen H 2 -Gas niessystem for at least one of the hydrogen source emitted hydrogen-containing gas flow rate, at least one mixing device for adjusting at least one mixed gas from the at least one furnace gas stream and the at least one emitted from the hydrogen source hydrogen-containing gas flow is provided, the at least one mixing device to the furnace gas line system and the H 2 gas line system is connected and wherein the at least one adjusted mixed gas at least one stoichiometric mixing quotient of a dividend with the difference zbetrag of the molar amounts of hydrogen as Minuend and carbon dioxide as Subtrrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and a mixed gas line system
  • the present invention can be implemented in a plant network for pig iron production and in a method for operating a plant network.
  • the devices of the plant network can be present in a simple and / or multiple design.
  • the system combination according to the invention for producing pig iron has the advantage over conventional system connections that the furnace gas, in particular with an H 2 source, can be used for supply to a chemical plant from the raw gases produced in the production of pig iron.
  • the system network is simpler and less complicated with fewer system components and a reduced number of process steps.
  • the system network has an improved influenceability of the economy of the overall process.
  • the system network is to require a low investment and operating costs, especially with the possibility of saving gas conditioning.
  • gas generation should be low in emissions and environmentally friendly.
  • the plant network according to the invention with the chemical plant over conventional Chemical plants have the advantage that can be used as feed gases exhaust gases from, for example, plant networks for pig iron production, which can affect the economy and is more environmentally friendly.
  • the method according to the invention for operating a plant network has the advantage that the furnace gas can be used solely for supply to a chemical plant from the raw gases produced in the production of pig iron.
  • the method has a reduced number of process steps compared to conventional methods.
  • the method according to the invention for operating a plant network has the advantage that fossil energy carriers do not have to be used directly for gas production and in particular furnace gas is sufficient.
  • a furnace gas stream is understood to be a gas stream which has been withdrawn from the furnace process.
  • a furnace gas line system is understood to mean a system of gas lines which can be charged with gases produced at the furnace, in particular during the production of pig iron.
  • a hydrogen source in the context of the present invention is understood to mean a source which provides hydrogen.
  • a hydrogen source can be used, for example, in a plant for producing hydrogen, in a gas line leading to hydrogen gas, a pyrolysis plant, a steam reforming plant, a water gas shift plant, a pressure swing adsorption plant (PSA), in particular a coke oven gas (-Pressure-Swing).
  • PSA pressure swing adsorption plant
  • Adsorption plant for example, a plant-internal purge gas recirculation, a hydrogen-containing exhaust gas, in particular from a chemical plant or refinery, or a combination thereof.
  • the production of hydrogen can be carried out by electrolysis, preferably by electrolysis of water, wherein the electrolysis of water is expediently operated with electric power generated from renewable energy.
  • an H 2 gas line system is understood as meaning a system comprising at least one gas line which can be charged with hydrogen and / or hydrogen-rich fluid, or a combination thereof, provided by a hydrogen source, in particular obtained by electrolysis of water.
  • a mixing device in the context of the present invention is understood to mean a device with which a mixed gas comprising furnace gas and hydrogen and comprising at least a stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as Subtrrahend and from a divisor with the Amount of the molar amounts of carbon monoxide and carbon dioxide is prepared, understood.
  • a mixing device may be selected from a group of a venturi nozzle, a mixing vessel, a mixing station, a static mixer, an ejector, a pipe tee, or a combination thereof.
  • a mixed gas line system is understood to mean a system comprising at least one gas line which can be charged with a mixed gas comprising furnace gas and hydrogen and / or hydrogen-rich fluid or a combination thereof, wherein the mixed gas line system is fluidically connected to the mixing device and in the flow direction is arranged after the mixing device.
  • a chemical plant in the context of the present invention is understood to mean a plant with which organic compounds, in particular hydrocarbon compounds and oxygenates thereof, such as, for example, methanol, can be provided.
  • organic compounds in particular hydrocarbon compounds and oxygenates thereof, such as, for example, methanol
  • a chemical plant according to the invention from a mixed gas comprising at least a stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, chemical products , Such as methanol or other hydrocarbon compounds are produced.
  • the capacity of the chemical plant is regulated depending on the mixed gas volume supplied to these plants.
  • An essential one The challenge for the chemical plant is dynamic driving with changing plant loads.
  • the mode of operation with changing plant loads can be realized, in particular, by the fact that the chemical plant has a plurality of small units connected in parallel, which are switched on or off individually depending on
  • the composition of the kiln gas mass flow additionally comprises nitrogen.
  • the mixed gas adjusted with the at least one mixing device has a stoichiometric mixing ratio with the dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and the divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide in the range from 1 to 10, preferably in the range of 1.2 to 6, more preferably in the range of 1.8 to 4, most preferably in the range of 1.9 to 3, on.
  • CO or C0 2 is equal to 0.
  • the plant network additionally comprises at least one plant for gas purification, wherein the at least one plant for gas purification is connected to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system.
  • a plant for gas purification is understood to mean a plant which at least partially separates off those constituents of a furnace gas which could have unfavorable effects, in particular the efficiency, in downstream process steps.
  • gas cleaning is understood as meaning a one-stage or multi-stage purification, in particular selected from a group of mechanical sorting processes such as density, particle size, particle inertness, surface wettability, magnetizability, electrical mobility or a combination thereof, of chemical separation processes such as a separation based on chemical properties such as catalytic processes, desulfurization processes, oxygen removal processes or a combination thereof, thermal separation processes such as separation based on Boiling point, freezing point, sublimation, solubility or a combination thereof, understood.
  • the coarser dust particles are separated as gout dust in a first "dry" stage, in particular with a swirl, dust bag or a combination thereof.
  • Examples of the removal of interfering ingredients are tar, sulfur and sulfur compounds and dusts.
  • the chemical plant is subjected to a pressure in the range of 1 to 400 bar, preferably in the range of 20 to 200 bar, more preferably in the range of 50 to 130 bar, most preferably in the range of 60 to 80 bar.
  • the system network additionally comprises at least one system for gas compression, wherein the at least one system for gas compression is connected to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system.
  • the system for gas compression provides a pressure in the range of 1 to 400 bar, preferably in the range of 20 to 200 bar, more preferably in the range of 50 to 130 bar, most preferably in the range of 60 to 80 bar.
  • a downstream chemical plant can be charged with the aforementioned pressure ranges.
  • the plant network additionally comprises at least one plant for carbon monoxide separation and / or carbon dioxide separation, wherein the at least one plant for carbon monoxide separation and / or carbon dioxide separation to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • a plant for carbon monoxide separation is understood to mean a plant which at least partially separates carbon monoxide.
  • the plant network additionally comprises a further carbon dioxide source, wherein the at least one further carbon dioxide source is connected to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system.
  • a carbon dioxide source in the context of the present invention is understood to mean a source which provides carbon dioxide.
  • a carbon dioxide source may comprise, for example, a carbon dioxide-containing mass flow, in particular fluid flow, resulting from a production plant with a carbon dioxide source.
  • a carbon dioxide source may also include a C0 2 scrubber, a CO shift unit, a C0 2 -rich fluid, such as a CO 2 -rich off-gas or a combination thereof.
  • the chemical plant connected to the mixed gas line system is selected from a group of a plant for producing methanol, a plant for producing higher alcohols, in particular ethanol, n-propanol, isopropanol, n-butanol, isobutanol , sec-butanol, tert-butanol, 1,4-butanediol or a combination thereof, a plant for producing alkanes, in particular methane, ethane, propane, n-butane, isobutane, cycle hexane or a combination thereof, a Plant for the production of alkenes, in particular ethene, propene, but-1-ene, (Z) -but-2-ene, (E) -but-2-ene, 2-methylprop-l-ene, 1,3-butadiene or a combination thereof, a plant for the production of alkynes, in particular ethyne, prop
  • the composition of the furnace gas stream provided in step a) additionally comprises nitrogen.
  • the at least one mixed gas produced in step c) becomes a stoichiometric mixture quotient with the dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and the divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide in the range of 1 to 10, preferably in the range of 1.2 to 6, more preferably in the range of 1.8 to 4, most preferably in the range of 1.9 to 3, adjusted.
  • the plant network additionally has at least one gas purification plant, the at least one gas purification plant being connected to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system, the method being a further step e) the cleaning of the provided in step a) at least one furnace gas stream and / or provided in step b) provided hydrogen-containing gas stream and / or the at least one mixed gas produced in step c).
  • the system network additionally has at least one system for gas compression, the at least one system for gas compression being connected to the furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system, the method being a further step f) compressing the at least one stream of furnace gas provided in step a) and / or the hydrogen-containing gas stream provided in step b) and / or the at least one mixed gas produced in step c).
  • the compression in step f) is carried out at a pressure in the range of 1 to 400 bar, preferably in the range of 20 to 200 bar, more preferably in the range of 50 to 130 bar, most preferably in the range of 60 performed up to 80 bar.
  • the plant network additionally comprises a plant for carbon monoxide separation and / or carbon dioxide separation, the process comprising, as a further step g), the at least partial separation of carbon monoxide and / or carbon dioxide.
  • the plant network additionally comprises a further carbon dioxide source, wherein the method for adjusting the stoichiometric mixture quotient of the produced at least one mixed gas as a further step h) comprises the supply of carbon dioxide from the further carbon dioxide source.
  • the order and / or the number of steps e) to h) is arbitrary.
  • a first preferred embodiment is a plant composite for pig iron production with
  • blast furnace gas conduit system for at least one blast furnace gas flow stream resulting from the production of pig iron, the blast furnace gas flow comprising a composition comprising at least nitrogen, carbon monoxide and carbon dioxide,
  • At least one mixing device is provided for adjusting at least one mixed gas from the at least one blast furnace gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, wherein the at least one mixing device is connected to the blast furnace gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas at least one stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as Subtrrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and a mixed gas line system for the at least one mixed gas, which in the setting the at least one mixture quotient is obtained and has a chemical plant which is connected to the mixed gas line system.
  • Plant network according to one of the first preferred embodiments 1 to 2, characterized in that the plant network additionally comprises at least one plant for gas purification, wherein the at least one plant for gas purification at the Blast furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • System composite according to one of the first preferred embodiments 1 to 3, characterized in that the system composite additionally at least one system for
  • Plant network according to one of the first preferred embodiments 1 to 4, characterized in that the plant network additionally comprises at least one plant for carbon monoxide separation and / or carbon dioxide separation, wherein the at least one plant for carbon monoxide separation and / or carbon dioxide separation of the Blast furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • Plant network according to one of the first preferred embodiments 1 to 5 characterized in that the plant network additionally comprises a further carbon dioxide source, wherein the at least one further carbon dioxide source to the blast furnace gas line system and / or the H 2 gas line system and / or the
  • Plant network according to one of the first preferred embodiments 1 to 6, characterized in that the connected to the mixed gas line system chemical plant is selected from a group of a plant for the production of methanol, a
  • Plant for the preparation of higher alcohols in particular ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol, tert-butanol, 1,4-butanediol or a combination thereof, a plant for the production of alkanes, in particular methane, ethane, propane, n-butane, isobutane, cyclohexane or a combination thereof, a plant for the production of alkenes, in particular ethene, propene, but-1-ene, (2) -but-2-ene , (E) -but-2-ene, 2-methylprop-l-ene, 1,3-butadiene or a combination thereof, a plant for the preparation of alkynes, in particular ethyne, propyne, 1-butyne, 2-butyne or a A combination thereof, a plant for the preparation of ethers, in
  • blast furnace gas conduit system for at least one blast furnace gas flow stream resulting from the production of pig iron, the blast furnace gas flow comprising a composition comprising at least nitrogen, carbon monoxide and carbon dioxide,
  • At least one mixing device is provided for adjusting at least one mixed gas from the at least one blast furnace gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, wherein the at least one mixing device is connected to the blast furnace gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas comprising at least a stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and
  • a mixed gas line system for the at least one mixed gas which is obtained when adjusting the at least one mixture quotient and has a chemical plant which is connected to the mixed gas line system, comprising the following steps: a) providing the at least one blast furnace gas stream; b) providing the at least one hydrogen-containing gas mass stream emitted from the hydrogen source; c) producing at least one mixed gas by mixing the at least one blast furnace gas stream provided in step a) with the at least one hydrogen-containing gas stream provided in step b), wherein the at least one stoichiometric mixture quotient with the dividend with the difference of the molar amounts of hydrogen as minuend and carbon dioxide as subtrahend and the divisor with the sum amount of the molar amounts of carbon monoxide and carbon dioxide is adjusted; d) supplying the at least one mixed gas produced in step c) via the mixed gas line system to the chemical plant connected to the mixed gas system.
  • Method according to a first preferred embodiment 8 characterized in that the at least one mixed gas produced in step c) to a stoichiometric mixture quotient with the dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and the divisor with the sum of the molar Amounts of carbon monoxide and carbon dioxide in the range of 1.2 to 10, preferably in the range of 1.8 to 6, more preferably in the range of 1.9 to 4, most preferably in the range of 2 to 3, is set.
  • the plant network additionally comprises at least one gas purification plant, wherein the at least one gas purification plant is connected to the blast furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system wherein the method comprises, as a further step e), purifying the at least one blast furnace gas stream provided in step a) and / or the hydrogen-containing gas stream provided in step b) and / or the at least one mixed gas prepared in step c).
  • the system composite additionally at least one system for Gas compression, wherein the at least one gas compression system is connected to the blast furnace gas line system and / or the H 2 gas line system and / or the mixed gas line system, the method comprising, as a further step f), compressing the at least one blast furnace gas stream provided in step a) / or of the hydrogen-containing gas stream provided in step b) and / or of the at least one mixed gas produced in step c).
  • step f) at a pressure in the range of 1 to 400 bar, preferably in the range of 20 to 200 bar, more preferably in the range of 50 to 130 bar, very particularly preferably carried out in the range of 60 to 80 bar.
  • the method comprises as a further step g) the at least partially separating carbon monoxide and / or carbon dioxide.
  • the plant composite additionally comprises a further carbon dioxide source, wherein the method for adjusting the stoichiometric mixture quotient of the produced at least one mixed gas as a further step h) the supply of carbon dioxide from the further carbon dioxide source.
  • a second preferred embodiment is a plant assembly for pig iron production with a smelting reduction furnace for pig iron production, a smelting reduction furnace gas conduit system for at least one smelting reduction furnace gas stream obtained in the production of pig iron the smelting reduction gas gas flow has a composition comprising at least carbon monoxide and carbon dioxide,
  • At least one mixing device for adjusting at least one mixed gas from the at least one smelting reduction gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, the at least one mixing device being connected to the smelting reduction gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas at least one stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as Subtrrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and a mixed gas line system for the at least one mixed gas, which in the setting the at least one mixture quotient is obtained and has a chemical plant which is connected to the mixed gas line system.
  • Plant composite according to a second preferred embodiment 1 characterized in that the composition of the
  • Plant network according to one of the second preferred embodiments 1 to 3, characterized in that the plant network additionally comprises at least one plant for gas purification, wherein the at least one plant for gas purification at the Smelting reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • Plant network according to one of the second preferred embodiments 1 to 4 characterized in that the plant network additionally comprises at least one gas compression system, wherein the at least one gas compression system to the smelting reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected , Plant network according to one of the second preferred embodiments 1 to 5, characterized in that the plant network additionally comprises at least one plant for carbon monoxide separation and / or carbon dioxide separation, wherein the at least one plant for carbon monoxide separation and / or carbon dioxide separation of the Smelting reduction gas line system and / or the H 2 - gas line system and / or the mixed gas line system is connected.
  • Plant network according to one of the second preferred embodiments 1 to 6 characterized in that the plant network additionally comprises a further carbon dioxide source, wherein the at least one further carbon dioxide source to the smelting reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • Methanol a plant for producing higher alcohols, in particular ethanol, n-propanol, iso-propanol, n-butanol, isobutanol, sec-butanol, tert-butanol, 1,4-butanediol or a combination thereof, a plant for the preparation of alkanes, in particular methane, ethane, propane, n-butane, isobutane, cyclohexane or a combination thereof, a plant for the production of alkenes, in particular ethene, propene, but-1-ene, (Z) -butene 2-ene, (E) -but-2-ene, 2-methylprop-l-ene, 1,3-butadiene or a combination thereof, a plant for the preparation of alkynes, in particular ethyne, propyne, 1-butyne, 2- Butin or a combination thereof, a plant for the preparation of ether
  • a second preferred embodiment comprises a method for operating a plant network
  • a smelting reduction gas conduit system for at least one smelting reduction furnace gas stream obtained in the production of pig iron, the smelting reduction furnace gas stream comprising a composition comprising at least carbon monoxide and carbon dioxide,
  • At least one mixing device for adjusting at least one mixed gas from the at least one smelting reduction gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, the at least one mixing device being connected to the smelting reduction gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas comprising at least a stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and
  • a mixed gas line system for the at least one mixed gas obtained in adjusting the at least one mixture quotient and having a chemical plant connected to the mixed gas line system comprising the following steps: a) providing the at least one smelting reduction furnace gas quantity b) providing the at least one hydrogen-containing gas mass stream emitted from the hydrogen source; c) producing at least one mixed gas by mixing the at least one smelting reduction gas mass stream provided in step a) with the at least one hydrogen-containing gas stream provided in step b), wherein the at least one stoichiometric mixture quotient with the dividend with the difference of the molar amounts of hydrogen as minuend and carbon dioxide as subtrahend and the divisor with the sum of the molar amounts of carbon monoxide and
  • Carbon dioxide in the range of 1 to 10, preferably in the range of 1.2 to 6, more preferably in the range of 1.8 to 4, most preferably in the range of 1.9 to 3, is set. 12.
  • the plant network additionally comprises at least one gas purification plant, wherein the at least one gas purification plant to the smelting reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system connected, wherein the method as a further step e) the cleaning of at least one provided in step a) Smelting reduction gas flow stream and / or the hydrogen-containing gas stream provided in step b) and / or the at least one mixed gas produced in step c).
  • the system composite additionally comprises at least one gas compression system, wherein the at least one gas compression system is connected to the smelting reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system wherein the method comprises, as a further step f), compressing the at least one smelting reduction furnace gas stream provided in step a) and / or the hydrogenous gas stream provided in step b) and / or the at least one mixed gas produced in step c).
  • Method according to a second preferred embodiment 13 characterized in that the compression in step f) at a pressure in the range of 1 to 400 bar, preferably in the range of 20 to 200 bar, more preferably in the range of 50 to 130 bar, especially is preferably carried out in the range of 60 to 80 bar.
  • the invention comprises the following third preferred embodiments:
  • a third preferred embodiment is a plant network for pig iron production with a direct reduction furnace for pig iron production
  • Direct reduction gas flow stream obtained in pig iron production comprising a composition comprising at least carbon monoxide and carbon dioxide,
  • At least one mixing device is provided for adjusting at least one mixed gas from the at least one direct reduction gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, wherein the at least one mixing device is connected to the direct reduction gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas at least one stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as Subtrrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and a mixed gas line system for the at least one mixed gas, which in the setting the at least one mixture quotient is obtained and has a chemical plant which is connected to the mixed gas line system.
  • Plant network according to a third preferred embodiment characterized in that the composition of the direct reduction gas gas flow additionally comprises nitrogen.
  • Plant network according to one of the third preferred embodiments 1 to 2 characterized in that the set with the at least one mixing device mixed gas a mixture quotient in the range of 1 to 10, preferably in the range of 1.2 to 6, particularly preferably in the range of 1 , 8 to 4, most preferably in the range of 1.9 to 3, having.
  • Plant network according to one of the third preferred embodiments 1 to 3 characterized in that the plant network additionally comprises at least one gas purification plant, wherein the at least one gas purification plant is connected to the direct reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system , Plant network according to one of the third preferred embodiments 1 to 4, characterized in that the plant network additionally comprises at least one gas compression system, wherein the at least one system for gas compression to the
  • Direct reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected.
  • System network according to one of the third preferred embodiments 1 to 5, characterized in that the system network additionally at least one system for
  • Carbon monoxide separation and / or carbon dioxide separation comprises, wherein the at least one plant for carbon monoxide separation and / or carbon dioxide separation to the direct reduction gas line system and / or the H 2 - gas line system and / or the mixed gas line system is connected.
  • Polyoxymethylene dimethyl ether or a combination thereof
  • a plant for the preparation of aldehydes in particular formaldehyde, acetaldehyde, propanal, butanal or a combination thereof
  • a plant for the preparation of ketones in particular acetone, butanone, 2-pentanone, 3-pentanone, methyl isopropyl ketone or a combination thereof
  • a plant for the production of carboxylic acids in particular formic acid, acetic acid, propionic acid, oxalic acid or a combination thereof or a combination thereof.
  • Direct reduction gas flow has a composition comprising at least carbon monoxide and carbon dioxide
  • At least one mixing device is provided for adjusting at least one mixed gas from the at least one direct reduction gas stream and the at least one hydrogen-containing gas stream emitted from the hydrogen source, wherein the at least one mixing device is connected to the direct reduction gas line system and to the H 2 gas line system and wherein the at least one adjusted mixed gas comprising at least a stoichiometric mixture quotient of a dividend with the difference of the molar amounts of hydrogen as Minuend and carbon dioxide as subtrahend and from a divisor with the sum of the molar amounts of carbon monoxide and carbon dioxide, and
  • a mixed gas line system for the at least one mixed gas which is obtained when adjusting the at least one mixture quotient and has a chemical plant which is connected to the mixed gas line system, comprising the following steps: a) providing the at least one direct reduction gas mass flow; b) providing the at least one hydrogen-containing gas mass stream emitted from the hydrogen source; c) producing at least one mixed gas by mixing the at least one direct reduction gas mass stream provided in step a) with the at least one hydrogen-containing gas stream provided in step b), wherein the at least one stoichiometric mixture quotient with the dividend with the difference of the molar amounts of hydrogen as minuend and carbon dioxide as subtrahend and the divisor with the sum amount of the molar amounts of carbon monoxide and carbon dioxide is adjusted; d) supplying the at least one mixed gas produced in step c) via the mixed gas line system to the chemical plant connected to the mixed gas system.
  • Direct reduction gas line system and / or the H 2 gas line system and / or the mixed gas line system is connected, the method comprising as a further step f) compressing the at least one direct reduction gas mass flow provided in step a) and / or the hydrogen-containing gas stream provided in step b) and / or or the at least one mixed gas produced in step c).
  • Method according to one of the third preferred embodiments 9 to 14 characterized in that the plant composite additionally comprises a plant for carbon monoxide separation and / or carbon dioxide separation, said method as a further step g) the at least partially separating carbon monoxide and / or Includes carbon dioxide.
  • Method according to one of the third preferred embodiments 9 to 15 characterized in that the plant composite additionally comprises a further carbon dioxide source, wherein the method for adjusting the stoichiometric mixture quotient of the produced at least one mixed gas as a further step h) the supply of carbon dioxide from the further carbon dioxide source includes. 17.
  • the method according to one of the third preferred embodiments 9 to 16 characterized in that the order and / or the number of steps e) to h) is arbitrary.
  • Fig. 1 is a highly simplified block diagram of a plant network according to the invention for pig iron production.
  • a plant for gas purification 8 a plant for carbon monoxide separation 10
  • a plant arranged for carbon dioxide separation 11 and / or in addition a further carbon dioxide source 12 is supplied in the furnace gas line system 2
  • a system for gas compression 9 is optionally arranged in the mixed gas line system 6.
  • the number and / or order of the arrangement of all the aforementioned devices is arbitrary as long as the setting of a micro gas comprising furnace gas and hydrogen-containing gas in a mixing device and the supply of the adjusted mixed gas is included in a chemical plant. As flow arrows only the main streams are shown in FIG.
  • Plant network for pig iron production and a method for operating a plant network of the type described above can be used in the production of pig iron.

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Abstract

La présente invention concerne un ensemble d'installations pour la production de fonte brute, pourvu d'un four (1) pour la production de fonte brute ; d'un système de conduite de gaz de four (2) pour au moins un courant massique de gaz de four, qui est produit lors de la production de fonte brute, le courant massique de gaz de four présentant une composition qui comprend au moins de l'azote, du monoxyde de carbone et du dioxyde de carbone ; d'une source d'hydrogène (3) ; d'un système de conduite de gaz pour H2 (4) pour au moins un courant massique gazeux contenant de l'hydrogène émis par la source d'hydrogène (3) ; au moins un dispositif de mélange (5) étant destiné au réglage d'au moins un gaz de mélange constitué par ledit au moins un courant gazeux de four et ledit au moins un courant massique gazeux contenant de l'hydrogène émis par la source d'hydrogène (3). Ledit au moins un dispositif de mélange (5) est relié au système de conduite de gaz de four (2) et au système de conduite de gaz pour H2 (4), ledit au moins un gaz de mélange réglé comprenant au moins un quotient de mélange stœchiométrique d'un dividende, constitué par la différence des quantités molaires d'hydrogène en tant que diminuende et de dioxyde de carbone en tant que diminuteur, et d'un diviseur, constitué par la somme des quantités molaires de monoxyde de carbone et de dioxyde de carbone ; et à un système de conduite de gaz de mélange (6) pour ledit au moins un gaz de mélange, qui est produit lors du réglage dudit au moins un quotient de mélange, et qui présente une installation chimique (7), qui est raccordée au système de conduite de gaz de mélange (6).
EP17784885.0A 2017-08-23 2017-09-29 Ensemble d'installations pour la production de fonte brute procédé permettant le fonctionnement de l'ensemble d'installations Withdrawn EP3673088A1 (fr)

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PCT/EP2017/074857 WO2019037885A1 (fr) 2017-08-23 2017-09-29 Ensemble d'installations pour la production de fonte brute procédé permettant le fonctionnement de l'ensemble d'installations

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DE102020208458A1 (de) * 2020-07-07 2022-01-13 Thyssenkrupp Ag Anlagenverbund sowie Verfahren zum Betrieb eines solchen Anlagenverbundes zur Herstellung höherer Alkohole
WO2022254234A1 (fr) * 2021-05-31 2022-12-08 Arcelormittal Procédé de fabrication de fer spongieux
CN114657318A (zh) * 2022-04-11 2022-06-24 中冶京诚工程技术有限公司 钢铁厂固液废料回收再利用的转炉烟气处理系统和方法
US11846034B1 (en) 2022-11-23 2023-12-19 Dioxycle Carbon monoxide electrolyzers used with reverse water gas shift reactors for the conversion of carbon dioxide into added-value products
US20240167172A1 (en) * 2022-11-23 2024-05-23 Dioxycle Reactors and Methods to Reduce Carbon Footprint of Electric Arc Furnaces While Producing Sustainable Chemicals

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