• 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:

    公开号:SU1378786A3
    申请号:SU853958908
    申请日:1985-10-03
    公开日:1988-02-28
    发明作者:Хаук Рольф
    申请人:Корф Инжинеринг Гмбх (Фирма)；Фоест Альпине Аг (Фирма)；
    IPC主号:
    专利说明:

    2. Method POP.1, differing in w, and so that the purified columnar gas is added to the gas-generating gas and fed to the shaft furnace.
    3., The method according to claim 1, differing from that by the fact that, preferably, 85% of the waste gas from the shaft furnace is used to produce a reducing gas ,.
    4. Method according to paragraphs. 1-3, about tl and. - due to the fact that low-value coke or high-temperature bursa use bare coke as a carbon carrier.
    5. Method according to paragraphs. 1-4, characterized in that the purified waste gas from the shaft furnace is supplied to the melting chamber at the level of the tuyeres plane.
    6. Method according to paragraphs. 1-5, which is distinguished by the fact that the purified gas from the shaft furnace is used as a carrier gas in the return of the dedusting products of the gases from the melting chamber.
    7. Method according to paragraphs. 1-6, characterized in that the purified gas from the shaft furnace is fed into the melting chamber through a plasma torch.
    8. Method according to paragraphs. 1-7, which is such that the ejected gas leaving the shaft furnace is heated to 300-600 ° C, preferably to 400 ° C, before being fed into the melting chamber.
    one
    This invention relates to a method for producing pig iron, in which iron ore is reduced in a reduction shaft furnace, and the resulting sponge iron is melted in a melter gasifier, the carbon carrier and a reducing gas are introduced into the melter gas, and the reduction gas is fed into a reduction shaft furnace.
    The aim of the invention is to reduce the consumption of carbon and oxygen.
    The drawing shows an installation diagram for producing iron.
    The plant has a reduction shaft furnace 1, into which iron ore and, if necessary, various additives are fed through an opening. A reducing gas is supplied to the reduction shaft furnace 1 from the bottom of the melting gas generator 2. The melting gas generator 2 receives sponge iron from the shaft furnace 1, which has been reduced from iron ore and turns it into molten iron. For this, coal and oxygen are supplied to the melter gas generator 2. Low-quality coke or high-temperature lignite coke can be used as coal.
    The flue gas recovery pgahtnoy furnace pipeline 3
    supplied to the scrubber 4, and then most of it, i.e. 50-95, preferably 85%, through the compressor 5 to the purification device 6 for the purification of HgO and COg. The gas, purified from CO and HgO, is first supplied to pipeline 7, and from it to three branches - pipelines 8, 9 and 10. Disposed through pipe 8, the processed reflux gas of the reduction shaft furnace is used as a cooling gas for the output of the smelter gas generator 2 gas. It provides cooling of this gas to approximately 850 C. In pipe 9, top gas is used as a carrier gas for the gas separated in the cyclone 11 from the gas worked in the smelter 2 and returned again to the smelter 2. The reducing gas is fed one way through the cyclone 11 and the pipe 12 and the other way through the pipe 13 from the melting gas generator 2 to the reduction shaft furnace. The rest of the treated blast furnace gas is fed through the branch pipe 10 to the oxygen tuyere through the melter gas generator 2.
    4 flue gas leaving the gas scrubber through pipe 14
    A small amount is taken from the circuit. This part is maintained in quantities that are sufficient to remove the nitrogen accumulated in the process. When using high quality coals, e.g., high-temperature brown coal coke or anthracite, so much top gas can be returned through purification device 6 that practically no excess gas will be formed. Then as much top gas as it is needed to release nitrogen through the lock device will be removed. The consumption of yi-l and oxygen at the same time as compared with. the method without returning the flue gas is approximately halved. If low quality coal is used, i.e. coal with a high content of ash and volatile components, it is recommended that the treated and recovered top gas be heated with a plasma torch to achieve the parameters necessary for its consumption.
    The cleaned top gas coming out of the cleaning device 6 before being supplied to the melting gas generator 2 can be preheated in a heat exchanger. This preheating is carried out up to a temperature of 300-600 €, preferably up to. Preheating to a higher temperature is not recommended, since in this case the consumption of CO occurs. The final heating is then carried out in the melter gasifier 2.
    If a fluidized bed is formed in the melter gasifier, in this case it is preferable to feed the top gas at the half of the height of the fluidized bed.
    If necessary, it is possible to generate as much of the marginal gas that it is used to drive the compressors of the plant to produce O, and the steam / 71I of the plant for purification of the CC is produced.
    权利要求:
    Claims (8)
    [1]
    1. METHOD FOR PRODUCING PIG IRON, including the reduction of iron ore from iron oxides in a shaft furnace with hot reducing gases, the release of the resulting hot product into a melting chamber — a gas generator, where carbon carrier and reducing gas are fed, and the outgoing from the melting chamber — gas generator into a shaft furnace, which differs the fact that, in order to reduce the consumption of carbon and oxygen, blast furnace gases leaving the shaft furnace are partially cleaned from. CO g and HjO and served in the melting chamber.
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    sya
    [2]
    2. The method according to claim 1, characterized in that the cleaned top gas is added to the gas-generating gas and fed into the shaft furnace.
    [3]
    3 "The method according to claim 1, with the fact that 50-95%, mainly 85%, of the exhaust gas from the shaft furnace is used to produce reducing gas ..
    [4]
    4. The method according to PP. 1-3, different, in that low-value coke or high-temperature brown coal coke is used as a carbon carrier.
    [5]
    5. The method according to PP. 1-4, characterized in that the purified exhaust from the shaft furnace gas into the melting chamber is supplied at the level of the tuyeres.
    [6]
    6. The method according to PP. 1–5, characterized in that the purified gas leaving the shaft furnace is used as a carrier gas when returning dust removal products from gases leaving the melting chamber.
    [7]
    7. The method according to PP. 1-6, characterized in that the purified gas leaving the shaft furnace is fed into the melting chamber through a plasma torch.
    [8]
    8. The method according to PP. 1-7, characterized in that the purified gas leaving the shaft furnace is heated to 300-600 ° C, preferably to 400 ° C, before being fed into the melting chamber.
    类似技术:
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    US6051048A|2000-04-18|Production of fuel gas
    US5259865A|1993-11-09|Very low slag iron making process
    SU1711677A3|1992-02-07|Method and apparatus for production melted pig iron or intermediately product for steel making
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    US5413622A|1995-05-09|Method of making hot metals with totally recycled gas
    AU613715B2|1991-08-08|Process for gasifying coal
    同族专利:
    公开号 | 公开日
    KR860003349A|1986-05-23|
    DD243047A5|1987-02-18|
    EP0179014B1|1989-01-25|
    ZA856463B|1986-04-30|
    EP0179014A3|1986-12-17|
    US4913733A|1990-04-03|
    DE3438487A1|1986-04-24|
    BR8505114A|1986-07-29|
    DE3438487C2|1987-10-15|
    JPS6196019A|1986-05-14|
    US5043011A|1991-08-27|
    EP0179014A2|1986-04-23|
    AU4691085A|1986-04-24|
    JPH0635613B2|1994-05-11|
    AU579179B2|1988-11-17|
    CA1266780A|1990-03-20|
    KR900004154B1|1990-06-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    DE1508082A1|1966-02-11|1970-04-09|Schenck Dr Ing Hermann|Method and device for the extraction of liquid iron from iron ores with hydrocarbons|
    SE388210B|1973-01-26|1976-09-27|Skf Svenska Kullagerfab Ab|MAKE A REDUCTION OF METAL FROM METAL OXIDES|
    US3853538A|1973-07-20|1974-12-10|Steel Corp|Use of reducing gas by coal gasification for direct iron ore reduction|
    SE395714B|1974-02-20|1977-08-22|Skf Ind Trading & Dev|METHODS AND DEVICES FOR MANUFACTURE OF METALS FROM OXIDIC MATERIAL|
    US3993473A|1975-03-20|1976-11-23|Bethlehem Steel Corporation|Method of reducing iron oxide|
    DE2843303C2|1978-10-04|1982-12-16|Korf-Stahl Ag, 7570 Baden-Baden|Process and plant for the production of liquid pig iron and reducing gas in a melter gasifier|
    US4225340A|1979-06-12|1980-09-30|Midrex Corporation|Method for the direct reduction of iron using gas from coal|
    AT363503B|1979-12-18|1981-08-10|Voest Alpine Ag|METHOD FOR CONTINUOUSLY MELTING MUCH PRE-REDUCED METAL MATERIALS, IN PARTICULAR IRON SPONGE, AND DEVICE FOR CARRYING OUT THIS METHOD|
    US4260412A|1980-01-16|1981-04-07|Midrex Corporation|Method of producing direct reduced iron with fluid bed coal gasification|
    CA1204287A|1982-03-22|1986-05-13|Frank V. Summers|Method of generating a reducing gas|
    NL8201945A|1982-05-12|1983-12-01|Hoogovens Groep Bv|METHOD AND APPARATUS FOR MANUFACTURING LIQUID IRON FROM OXYDIC IRON ORE.|
    US4412858A|1982-07-12|1983-11-01|Hylsa, S.A.|Method of converting iron ore into molten iron|
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    AT376241B|1983-01-03|1984-10-25|Voest Alpine Ag|METHOD FOR MELTING AT LEAST PARTLY REDUCED IRON ORE|
    US4591380A|1983-12-01|1986-05-27|Midrex International B.V. Rotterdam, Zurich Branch|Method of generating a reducing gas|
    DE3437913C2|1984-10-12|1987-05-07|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DE3438487C2|1984-10-17|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    DE3603894C2|1986-02-05|1993-03-18|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|DE3438487C2|1984-10-17|1987-10-15|Korf Engineering Gmbh, 4000 Duesseldorf, De|
    AT381116B|1984-11-15|1986-08-25|Voest Alpine Ag|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS AND DEVICE FOR IMPLEMENTING THE METHOD|
    ZA85287B|1985-01-21|1986-09-24|Korf Engineering Gmbh|Process for the production of pig iron|
    AT382390B|1985-03-21|1987-02-25|Voest Alpine Ind Anlagen|METHOD FOR THE PRODUCTION OF LIQUID PIPE IRON OR STEEL PRE-PRODUCTS|
    DE3603894C2|1986-02-05|1993-03-18|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|
    DE3677513D1|1986-08-12|1991-03-14|Voest Alpine Ind Anlagen|LODGE PLANT AND METHOD FOR OPERATING SUCH A LODGE PLANT.|
    DE3669535D1|1986-08-12|1990-04-19|Voest Alpine Ind Anlagen|LODGE PLANT AND METHOD FOR OPERATING SUCH A LODGE PLANT.|
    DE3731851C2|1987-09-22|1990-02-01|Voest-Alpine Industrieanlagenbau Ges.M.B.H., Linz, At|
    DE4037977C2|1990-11-29|1992-09-24|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|
    AT395435B|1991-02-19|1992-12-28|Voest Alpine Ind Anlagen|METHOD FOR COMMISSIONING A PLANT FOR PRODUCING RAW IRON OR STEEL PRE-MATERIAL, AND PLANT FOR IMPLEMENTING THE METHOD|
    US5380352A|1992-10-06|1995-01-10|Bechtel Group, Inc.|Method of using rubber tires in an iron making process|
    US5320676A|1992-10-06|1994-06-14|Bechtel Group, Inc.|Low slag iron making process with injecting coolant|
    US5429658A|1992-10-06|1995-07-04|Bechtel Group, Inc.|Method of making iron from oily steel and iron ferrous waste|
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    US5958107A|1993-12-15|1999-09-28|Bechtel Croup, Inc.|Shift conversion for the preparation of reducing gas|
    US5413622A|1993-12-16|1995-05-09|Bechtel Group, Inc.|Method of making hot metals with totally recycled gas|
    US6214084B1|1997-09-03|2001-04-10|The Boc Group, Inc.|Iron manufacturing process|
    US6027545A|1998-02-20|2000-02-22|Hylsa, S.A. De C.V.|Method and apparatus for producing direct reduced iron with improved reducing gas utilization|
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    AT507113B1|2008-07-17|2010-07-15|Siemens Vai Metals Tech Gmbh|METHOD AND APPARATUS FOR ENERGY AND CO2 EMISSION OPTIMIZED IRON PRODUCTION|
    AT507823B1|2009-01-30|2011-01-15|Siemens Vai Metals Tech Gmbh|METHOD AND APPARATUS FOR PRODUCING RAW IRONS OR LIQUID STEEL PREPARED PRODUCTS|
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    WO2012018394A2|2010-08-03|2012-02-09|Xiaodi Huang|Method and apparatus for coproduction of pig iron and high quality syngas|
    CN112143847A|2019-06-26|2020-12-29|宝山钢铁股份有限公司|Method and device for adjusting vault temperature and coal gas yield in total oxygen smelting reduction iron-making process|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3438487A|DE3438487C2|1984-10-17|1984-10-17|
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