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WO2011087199A1 - Appareil de fabrication de fer fondu destiné à réduire les émissions de dioxyde de carbone - Google Patents

Appareil de fabrication de fer fondu destiné à réduire les émissions de dioxyde de carbone Download PDF

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Publication number
WO2011087199A1
WO2011087199A1 PCT/KR2010/006126 KR2010006126W WO2011087199A1 WO 2011087199 A1 WO2011087199 A1 WO 2011087199A1 KR 2010006126 W KR2010006126 W KR 2010006126W WO 2011087199 A1 WO2011087199 A1 WO 2011087199A1
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WO
WIPO (PCT)
Prior art keywords
molten iron
gas
manufacturing apparatus
cog
mixed gas
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.)
Ceased
Application number
PCT/KR2010/006126
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English (en)
Korean (ko)
Inventor
정종헌
김기현
이시형
김성만
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.)
Posco Holdings Inc
Original Assignee
Posco Co Ltd
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 Posco Co Ltd filed Critical Posco Co Ltd
Priority to CN201080061728.5A priority Critical patent/CN102762748B/zh
Publication of WO2011087199A1 publication Critical patent/WO2011087199A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
    • C10K3/02—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by catalytic treatment
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K3/00—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide
    • C10K3/06—Modifying the chemical composition of combustible gases containing carbon monoxide to produce an improved fuel, e.g. one of different calorific value, which may be free from carbon monoxide by mixing with 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
    • 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
    • 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
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • 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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • 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
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/62—Energy conversion other than by heat exchange, e.g. by use of exhaust gas in energy production
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/02—Treatment of the exhaust gas
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2100/00—Exhaust gas
    • C21C2100/04—Recirculation of the exhaust gas
    • 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 present invention relates to a molten iron manufacturing apparatus, and more particularly, to a molten iron manufacturing apparatus that can reduce the amount of carbon dioxide generated in the molten iron manufacturing process and produce hydrogen, liquid fuel and electrical energy.
  • carbon dioxide contained in by-product gas is considered to be the cause of climate change, and it needs to be recovered and recycled.
  • the present invention is to provide a molten iron manufacturing apparatus for reducing the amount of carbon dioxide generated in the molten iron manufacturing process by recycling the carbon dioxide generated in the steelmaking process.
  • the present invention is to provide a molten iron manufacturing apparatus capable of producing liquid fuel and electrical energy in the molten iron manufacturing process.
  • An apparatus for manufacturing molten iron is molten iron for producing molten iron and generating by-product gas.
  • the apparatus for producing molten iron is coke, which produces coke and generates COG.
  • the mixed gas is mixed with the COG to generate a mixed gas.
  • a mixed gas reforming apparatus for reforming the mixed gas to generate a reducing gas, and an iron ore reducing apparatus for reducing the iron ore by receiving the reducing gas.
  • the molten iron manufacturing apparatus further includes a by-product gas purification equipment
  • the by-product gas purification equipment may supply the steel production by-product gas to the gas mixing device after purifying the harmful components in the steel production by-product.
  • the off-gas purification plant may include at least one of a cyclone, a filter and a scrubber.
  • the by-product gas purification equipment may further include a heat exchange device.
  • the apparatus for manufacturing molten iron may further include a COG refining facility, and the COG refining facility may supply the COG to the gas mixing device after purifying harmful components in the COG.
  • the COG purification plant may include at least one of a cyclone, a filter, a scrubber and an impurity purification reactor.
  • the COG refining plant may further comprise a heat exchange device.
  • the apparatus for producing molten iron further includes a tar reforming reactor, which is connected to the COG refining plant and may reform tar separated from the COG before being purified.
  • the molten iron manufacturing apparatus may further include a heat exchanger, and the heat exchanger may supply heat generated in the molten iron manufacturing furnace to the mixed gas reformer.
  • the molten iron manufacturing apparatus may further include a mixed gas refinery, and the mixed gas refinery may be provided between the gas mixing device and the mixed gas reformer to purify the mixed gas and supply the mixed gas to the mixed gas reformer.
  • the molten iron manufacturing apparatus may further include a first heat exchanger, and the first heat exchanger may supply heat generated in the molten iron manufacturing furnace to the mixed gas reformer.
  • the apparatus for manufacturing molten iron further includes a hydrogen separation device and a carbon dioxide regeneration device, the hydrogen separation device is connected to the mixed gas reformer to separate hydrogen from the reducing gas, and the carbon dioxide regeneration device is supplied from the hydrogen separation device. The hydrogen received can be reacted with carbon dioxide.
  • the molten iron manufacturing apparatus further includes a water separation device, the water separation device is connected to the carbon dioxide regeneration device, it is possible to separate and remove the water generated in the carbon dioxide regeneration device.
  • the molten iron manufacturing apparatus further includes a liquid fuel generating device, the liquid fuel generating device is connected to the mixed gas reforming device, can be supplied with a reducing gas from the mixed gas reforming device to generate a liquid fuel.
  • the liquid fuel produced by the liquid fuel generating device may include at least one of methanol, dimethyl ether and hydro carbon.
  • the liquid fuel generating device may be a slurry reactor.
  • the molten iron manufacturing apparatus may further include a second heat exchanger, and the second heat exchanger may supply heat generated from the liquid fuel generating device to the mixed gas reformer.
  • the molten iron manufacturing apparatus further comprises a compressor, the compressor may be provided between the mixed gas reforming device and the liquid fuel generating device.
  • the apparatus for manufacturing molten iron further includes a power generation device, which is connected to the liquid fuel generating device and may receive electric gas from the liquid fuel generating device to produce electrical energy.
  • the power generation device may be a turbine.
  • the mixed gas generated in the gas mixing device may include hydrogen (H 2 ) and carbon monoxide (CO), and the molar ratio of the hydrogen and carbon monoxide may be 0.5 or more and 2.0 or less.
  • the mixed gas may further include carbon dioxide (CO 2 ) and methane (CH 4 ), and the molar ratio of the carbon dioxide and the methane may be 0.7 or more and 4.0 or less.
  • the apparatus for producing molten iron further includes a hydrogen separation device and a carbon dioxide regeneration device, wherein the hydrogen separation device is connected to the COG refining plant to separate hydrogen from COG, and the carbon dioxide regeneration device receives hydrogen supplied from the hydrogen separation device. Can react with carbon dioxide.
  • the molten iron manufacturing apparatus further includes a water separation device, the water separation device is connected to the carbon dioxide regeneration device, it is possible to separate and remove the water generated in the carbon dioxide regeneration device.
  • the apparatus for manufacturing molten iron is a first iron ore reducing apparatus for reducing iron ore to produce reduced iron and molten iron for producing molten iron and generating byproduct gas by receiving the reduced iron.
  • Coke to generate a a gas mixing device for mixing the by-product gas and the COG to generate a mixed gas, a mixed gas reforming device for reforming the mixed gas to generate a reducing gas and reducing gas to reduce the iron ore It may include a second iron ore reduction device.
  • the molten iron manufacturing apparatus may further include a by-product gas purification equipment, and the by-product gas purification equipment may supply the steel-by-product by-product gas to the gas mixing device after purifying harmful components in the steel production by-product.
  • the apparatus for manufacturing molten iron may further include a COG refining facility, and the COG refining facility may supply the COG to the gas mixing device after purifying harmful components in the COG.
  • the apparatus for manufacturing molten iron includes a gas distribution device between the mixed gas reformer and the second iron ore reduction device, and the gas distribution device sends a portion of the reducing gas generated in the mixed gas reformer to the second iron ore reduction device. And the rest to the first iron ore reduction apparatus.
  • the first iron ore reduction device or the second iron ore reduction device may be a flow reducing furnace.
  • FIG. 1 is a schematic view showing a molten iron manufacturing apparatus according to a first embodiment of the present invention.
  • FIG. 2 is a schematic view showing a molten iron manufacturing apparatus according to a second embodiment of the present invention.
  • FIG. 3 is a schematic view showing a molten iron manufacturing apparatus according to a third embodiment of the present invention.
  • FIG. 4 is a schematic view showing a molten iron manufacturing apparatus according to a fourth embodiment of the present invention.
  • FIG. 5 is a schematic view showing a molten iron manufacturing apparatus according to a fifth embodiment of the present invention.
  • FIG. 6 is a schematic view showing a molten iron manufacturing apparatus according to a sixth embodiment of the present invention.
  • FIG. 7 is a schematic view showing a molten iron manufacturing apparatus according to a seventh embodiment of the present invention.
  • FIG. 1 is a schematic view showing a molten iron manufacturing apparatus according to an embodiment of the present invention.
  • the molten iron manufacturing apparatus is a molten iron manufacturing furnace 110, coke oven 120, gas mixing device 130, mixed gas reforming device 140, iron ore reduction device ( 150, a by-product gas purification facility 160, a COG purification facility 170, a first heat exchanger 180, a water vapor separation device 190, and a power generator 195.
  • the molten iron manufacturing furnace 110 is an apparatus for producing molten iron and slag using iron-containing raw materials and carbon-containing raw materials and generating by-product gas.
  • the iron-containing raw material may be iron ore and the carbon-containing raw material may be coal.
  • the iron-containing raw material reduction reaction mainly consists of carbon monoxide (CO) and hydrogen (H 2 ) and are represented by the following formulas (1) and (2), respectively.
  • the by-product gas may have a H 2 / CO molar ratio of 0.5 or more at a high temperature of 350 ° C. or more.
  • the by-product gas is supplied to the gas mixing device 130 via the by-product gas purification plant 160.
  • the by-product gas purification facility 160 is provided between the molten iron manufacturing furnace 110 and the gas mixing device 130, and the harmful components such as particulate dust, nitrogen oxides (NOx), sulfur oxides (SOx), and mercury contained in the by-product gas. To remove the device.
  • the by-product gas purification equipment 160 includes a cyclone, a filter, a scrubber, or the like to remove harmful components.
  • the by-product gas purification equipment 160 may include a heat exchange device (not shown) or the like to maintain the thermal efficiency of the by-product gas.
  • the heat exchanger recovers heat from the hot by-product gas and supplies heat to the purified by-product gas before the purified by-product gas is supplied to the gas mixing device 130.
  • the heat exchanger may be present in the form of a combined cyclone, filter or scrubber.
  • the coke oven 120 produces coke and generates a coke oven gas (COG) of 800 ° C. or higher.
  • Coke may be used as a heat source and reducing agent of the molten iron manufacturing furnace (110).
  • COG is mostly composed of hydrogen (58%), methane (26%) and carbon monoxide (6%).
  • COG may be used as a heat source for steelmaking processes and may be used for the production of reducing gas, hydrogen, methanol or direct reduced iron.
  • the COG is supplied to the gas mixing device 130 via the COG purification plant 170.
  • the COG refining facility 170 is provided between the coke oven 120 and the gas mixing device 130.
  • the COG refining facility 170 includes particulate dust, sulfur compounds (H 2 S), ammonia (NH 3 ), BTX, mercury, and the like contained in the COG. It is a device that removes ingredients.
  • the COG purification plant 170 includes a cyclone, a filter, a scrubber or an impurity purification reactor to remove harmful components.
  • the COG refining plant 170 may include a heat exchanger (not shown) or the like to maintain the thermal efficiency of the by-product gas.
  • the heat exchanger recovers heat from the high temperature COG, and supplies heat back to the purified COG before the purified COG is supplied to the gas mixing device 130.
  • the heat exchanger may be present in combination with a cyclone, a filter, a scrubber, or the like.
  • the gas mixing device 130 is a device that generates a mixed gas by mixing a by-product gas and a COG component.
  • the mixed gas includes hydrogen (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ) and methane (CH 4 ).
  • the molar ratio of hydrogen and carbon monoxide may be 0.5 or more and 2.0 or less, and the molar ratio of carbon dioxide and methane may be 0.7 and 4.0 or less .
  • the mixed gas may include water vapor (H 2 O) and nitrogen (N 2 ).
  • the O / C molar ratio in the mixed gas may be at least 1.0.
  • This ratio can be controlled by adding excess carbon dioxide in by-product gas or excess carbon dioxide recovered from the steelmaking process. This ratio can also be adjusted by introducing steam or extra steam in the by-product gas.
  • Mixed gas reforming unit 140 is a device for generating a reducing gas by reforming the mixed gas.
  • the generated reducing gas includes hydrogen and carbon monoxide.
  • the mixed gas reformer 140 is a device for generating hydrogen (H 2 ) and carbon monoxide (CO) by mainly reacting methane (CH 4 ) and carbon dioxide (CO 2 ), and the reforming reaction is represented by Chemical Formulas 3 to 3 below. Appears as (6).
  • Fluidized bed reactors may be used as the mixed gas reformer 140. Using a fluidized bed reactor can prevent catalyst deactivation by carbon deposition and improve the yield of hydrogen and carbon monoxide produced.
  • a first heat exchanger 180 may be provided between the molten iron manufacturing furnace 110 and the mixed gas reformer 140.
  • the first heat exchanger 180 supplies the heat generated from the molten iron manufacturing furnace 110 to the mixed gas reformer 120.
  • Iron ore reduction device 150 is a device for reducing iron ore by receiving a reducing gas from the mixed gas reformer 140 to produce reduced iron. That is, the reducing gas acts as a reducing agent in the iron ore reduction apparatus 150.
  • Iron ore supplied to the iron ore reduction device 150 may have a smaller average particle size than iron ore supplied to the molten iron manufacturing furnace (110). For example, fine iron ore having an average particle size of 1 mm or less can be supplied to the iron ore reduction device 150.
  • Iron ore reduction device 150 may be a fluidized bed reactor capable of operating at a temperature of 700 °C or more, pressure 1 bar or more.
  • the fluidized bed reactor may be in the form of bubbling, turbulent or riser.
  • Counter current type or spray type fluidized bed reactors in which the ultra fine iron ore descends and the reducing syngas rises may also be used.
  • the reduced iron produced in the iron ore reduction apparatus 150 may be put into a converter, blast furnace, in particular an electric furnace to contribute to reducing carbon dioxide in the steel process.
  • the steam ore separation device 190 may be connected to the iron ore reduction device 150.
  • the steam separator 190 separates and removes steam generated in the iron ore reduction process, and may recover heat.
  • the power generation device 195 is connected to the water vapor separation device 190 to receive electric steam and mixed gas to produce electric energy.
  • the produced electrical energy can be supplied to each device constituting the molten iron manufacturing device.
  • the power generation device 195 may be a turbine.
  • FIG. 2 is a schematic view showing a molten iron manufacturing apparatus according to a second embodiment of the present invention.
  • the basic components of the apparatus for manufacturing molten iron according to the second embodiment of the present invention is the same as the first embodiment, but further provided with a tar reforming reactor 210.
  • the tar reforming reactor 210 is a device for reforming tar generated during the COG purification process.
  • the tar reforming reactor 210 is installed together with the COG purification plant 170. Since the tar is reformed in the tar reforming reactor 210, the COG may be introduced into the gas mixing device 130 in a state where the contents of carbon dioxide and hydrogen are increased.
  • FIG. 3 is a schematic view showing a molten iron manufacturing apparatus according to a third embodiment of the present invention.
  • the basic components of the apparatus for producing molten iron according to the second embodiment of the present invention is similar to the first embodiment, but after the by-product gas and COG flows into the gas mixing device 130 together mixed gas purification equipment The gas is introduced into the gas mixing device 140 through the 310.
  • the mixed gas purification plant 310 separates the solid particles from the mixed gas in which the by-product gas and the COG are mixed. Solid particles are separated mainly with tar residues from COG as iron ore and coal residues. The solid particles and tar residues thus separated can be made into briquettes or pellets at high temperatures and introduced into a blast furnace, converter or electric furnace.
  • Figure 4 is a schematic diagram showing a molten iron manufacturing apparatus according to a fourth embodiment of the present invention.
  • the basic components of the apparatus for manufacturing molten iron according to the fourth embodiment of the present invention are similar to those of the third embodiment, but the hydrogen separation device 410, the carbon dioxide regeneration device 420, and the water separation device 430. Was further provided.
  • the hydrogen separation device 410 separates hydrogen from the reducing gas generated by the mixed gas reformer 140 and supplies the hydrogen to the carbon dioxide regeneration device 420.
  • the carbon dioxide regeneration device 420 reacts the hydrogen supplied from the hydrogen separation device 410 with carbon dioxide to generate carbon monoxide and water vapor.
  • the reaction scheme is represented by the following formula (7).
  • the water separator 430 is a device for separating and removing water vapor generated from the carbon dioxide regeneration device 420. As a result, carbon monoxide is added to the reducing gas and supplied to the iron ore reduction device 150, thereby reducing the reducing agent ratio.
  • FIG. 5 is a schematic view showing a molten iron manufacturing apparatus according to a fifth embodiment of the present invention.
  • the basic components of the apparatus for manufacturing molten iron according to the fifth embodiment of the present invention are similar to those of the third embodiment, but further include a liquid fuel generating device 510.
  • the liquid fuel generating device 510 is connected to the iron ore reduction device 130 to generate a liquid fuel by receiving a mixed gas.
  • Water vapor in the mixed gas generated in the iron ore reduction device 150 is separated and removed in the water vapor separation device 190, and the remaining gas is supplied to the liquid fuel generating device (510).
  • the remaining gas may be compressed in the compressor 520 before being supplied to the liquid fuel generating device 510.
  • the resulting liquid fuel may be methanol, dimethyl ether, hydro carbon, or the like.
  • Methanol is produced by hydrogenation of carbon monoxide (CO), hydrogenation of carbon dioxide (CO 2 ), and water gas shift reaction. Each reaction is represented by the following formulas (8) to (10).
  • Dimethyl ether can be produced by methanol and is represented by the following formula (11).
  • liquid fuel generator 510 catalyst deactivation due to carbon deposition can be prevented by using a slurry reactor, which is one of fluidized bed reactors.
  • Slurry reactor is composed of metal solid phase catalyst, liquid molecular wax (high molecular weight liquid) of hydrocarbon and by-product gas containing carbon dioxide, carbon monoxide and hydrogen.
  • By-product gas reacts with catalyst to produce liquid fuel such as methanol.
  • the liquid wax of the hydrocarbon is a medium for transferring heat and substances, and a second heat exchanger 530 may be installed to recover heat generated by an exothermic reaction.
  • the second heat exchanger 530 recovers heat generated by the liquid fuel generating device 510 and transfers heat to the mixed gas supplied to the mixed gas reformer 140. Thermal efficiency may be increased by the operation of the second heat exchanger 530.
  • the structure of the liquid fuel generating device 510 is not limited to a slurry reactor, a fixed bed reactor consisting of by-product gas and a catalyst layer may also be used.
  • Liquid fuel such as methanol generated in the liquid fuel generating device 510 and water are separated from each other in the liquid fuel / water separator 540, and the generated mixed gas is supplied to the power generator 195.
  • FIG. 6 is a schematic view showing a molten iron manufacturing apparatus according to a sixth embodiment of the present invention.
  • the first iron ore reducing device 610 is a device for reducing iron ore to produce reduced iron.
  • the molten iron manufacturing furnace 620 receives molten iron and produces molten iron.
  • the gas distribution device 630 supplies a part of the reducing gas generated in the mixed gas reformer 140 to the first iron ore reduction device 610 and supplies the rest to the second iron ore reduction device 640.
  • the first iron ore reducing device 610 or the second iron ore reducing device 640 may be a flow reducing furnace.
  • FIG. 7 is a schematic view showing a molten iron manufacturing apparatus according to a seventh embodiment of the present invention.
  • the hydrogen separation device 710 separates hydrogen from the COG purified in the COG purification plant 170.
  • the separated hydrogen is supplied to the carbon dioxide regeneration device 420.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

Un mode de réalisation de la présente invention concerne un appareil de fabrication de fer fondu. L'appareil de fabrication de fer fondu produit du fer fondu et génère un produit secondaire gazeux. L'appareil de fabrication de fer fondu comprend : un four à coke dans lequel est produit le coke et est généré le gaz de four à coke ; un dispositif de mélange de gaz qui mélange le produit secondaire gazeux et le gaz de four à coke afin de générer un mélange de gaz ; un dispositif de reformage du mélange de gaz qui reforme le mélange de gaz afin de générer un gaz réducteur ; et un dispositif de réduction du minerai de fer qui reçoit le gaz réducteur et réduit le minerai de fer.
PCT/KR2010/006126 2010-01-18 2010-09-09 Appareil de fabrication de fer fondu destiné à réduire les émissions de dioxyde de carbone Ceased WO2011087199A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201080061728.5A CN102762748B (zh) 2010-01-18 2010-09-09 降低二氧化碳的生成量的铁水制备装置

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KR1020100004503A KR101153358B1 (ko) 2010-01-18 2010-01-18 이산화탄소 발생량을 저감하는 용철 제조 장치
KR10-2010-0004503 2010-01-18

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AT510955B1 (de) * 2011-05-30 2012-08-15 Siemens Vai Metals Tech Gmbh Reduktion von metalloxiden unter verwendung eines sowohl kohlenwasserstoff als auch wasserstoff enthaltenden gasstromes
KR101321072B1 (ko) * 2011-09-06 2013-10-23 주식회사 포스코 일산화탄소 및 수소를 포함하는 합성가스 제조장치 및 그의 제조방법
KR101351317B1 (ko) * 2011-12-12 2014-01-15 재단법인 포항산업과학연구원 코크스 오븐 가스 및 제철 부생가스를 이용한 환원가스의 제조방법
KR101310659B1 (ko) * 2011-12-23 2013-09-25 재단법인 포항산업과학연구원 전로가스 회수장치
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