• 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:
    Process for the continuous gasification of solids or liquids, contg. carbon and/or hydrocarbons, in a reactor contg. a bath of molten iron, the novelty being that the reactants, (a) the carbonaceous solids or liqs., and (b) oxygen or media contg. oxygen, are blown into the bath by one or more tuyeres located in the reactor below the free surface of the bath in a refractory lining and which therefore wear way at the same rate. Materials (a) are pref. coal and/or heavy oil, whereas material (b) is pref. oxygen, surrounded by a protective medium of, or contg., gaseous or liq. hydrocarbonds. The reactants are pref. fed simultaneously together with any finely-powdered slag-making materials via the tuyere(s), or they may be added separately. Used for prodn. of redn. gas fed to a blast furnace for mfg. crude iron from iron ore, where the use of the redn. gas results in a substantial saving of the amt. of coke required.
    公开号:SU747410A3
    申请号:SU762359104
    申请日:1976-05-07
    公开日:1980-07-23
    发明作者:Бротцман Карл；Кнюппель Гельмут；Фассбиндер Ганс-Георг
    申请人:Айзенверк-Гезельшафт Мбх Максимилиансхютте (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to methods for producing reducing gases, and may find its application in the metallurgical industry.
    There is a known method for producing a gas pumping station by passing hydrocarbons with steam through a copper melt at a temperature of 1200-1500 ° C. The process is carried out in a converter lined with refractory material by injecting a vapor-gas mixture below the level of the molten metal ij.
    The main disadvantage of this method is the use of an expensive, costly and scarce metal to melt.
    The closest to the described invention to the technical essence and the achieved result is a method of obtaining a reducing gas, including the supply of carbon-containing substance and oxygen-containing gas to the iron melt below its surface and exhaust gas 2.
    The main disadvantage of this method is that the process performance is not high enough due to the small (1 week) reactor life, resulting in
    there is a need for parts of its stop.
    The object of the present invention is to increase the productivity of the process in. by increasing the service life of the equipment.
    This goal is achieved by the method of producing a reducing gas, which includes supplying the coal 10 of the containing substance and the oxygen-containing gas to the iron melt below its surface and withdrawing the produced gas, in which the oxygen-containing gas is fed down to the reaction zone in the shell of the carbon-containing substance.
    This method allows to increase the service life of the reactor with one
    20 weeks to three months.
    Example 1. A reactor for receiving a reducing gas, in particular for use in a blast furnace and with a direct reduction method, is gasified with 45 tons of coal per hour. The reactor has a capacity of 55 meters and contains 50 tons of iron melt. Working pressure is
    EO 3 bar.
    45 g of the aforementioned coal per hour and 40,000 oxygen are supplied to the molten iron as reagents. For the transport of ground coal with a maximum grain size of 0.5 mm, 3000 nm per hour of gas are used. In practice, CO, CH, and nitrogen were justified. The resulting amount of gas 100,000 per hour when using nitrogen as the carrier gas has a composition of 65-72% CO, 25-32% H ,, 2.6-2.8% N, the rest When using CO or CH. B as carrier gas lack of nitrogen in the reducing gas
    The operating temperature of the molten iron is. For the operation of this reactor, several variants of the location of the nozzles in the bottom of the reactor were tested,
    The preferred option is to arrange the nozzles, which consist of three concentric pipes and which are located in one row on the diameter of the bridge in parallel to the axis of tilting of the converter in the refractory lining. The bottom diameter is 2.2 m. The distance between tramways is 0.5 m. The central tube of the nozzle consists of high-quality steel (0.4% C, 13% C). The clear diameter is 30 mm. This pipe serves to supply coal dust with the carrier gas. One m transported 10-15 kg of coal pksha. Between the central tube and the second concentric tube is an annular gap of 13 GGm width. Oxygen is supplied through this annular gap. Finally, a natural gas in the total amount of 2000 nm flows through the second annular gap formed by the ZtoroZ and the third concentric, 0.5 mm wide.
    Example 2 ,, This reactor with the TeiviH data also works with four-piece nozzles on the bottom. The diameter of the inner tube of the nozzle is 24 mm; other sizes are made in the same relation as
    stated above. These four nozzles are located along the strip in the bottom in the refractory material. The width of the strip is 0.75 m. The distance between the two nozzles located on the edge of the strip is 1 m.
    By operating the reactor with such an arrangement, the same carvffiie results are obtained. As with the variant, as in Example 1.
    Example 3. In the same reactor, two nozzles are used to supply reagents in the bottom wall of the converter, approximately 0.2 m above the bottom. Nozzles are built the same. The central tube has a clear diameter of 42 mm. Nozzles are located opposite each other.
    And this option achieves the same results as according to examples 1 and 2.
    In all three cases, the reactor operation time was 3 months.
     the work of a known reactor is no more than one week, as determined by experiments conducted in 1975.
    Formula
    the invention
    A method for producing a reducing gas, including supplying the carbon with the oxygen content of the substance and the oxygen containing gas, its gas to the iron melt below its surface and withdrawing the produced gas, characterized in that, in order to increase the process performance by increasing the service life of the apparatus, oxygen-containing gas is fed down to the reaction zone in the shell of a carbon-containing substance.
    Sources of information Bo received attention in the examination
    1., Copyright wedding USSR 1 386835, cl. From 01 to 2/14, 04/21/73
    2 „US Patent No. 3533739, cl. 23-134, 13.10.70 (prototype).
    权利要求:
    Claims (1)
    [1]
    Claim
    A method of producing a reducing gas, comprising supplying a carbon-containing substance and an oxygen-containing gas to an iron melt below its surface and discharging the produced gas, characterized in that, in order to increase the productivity of the process by increasing the service life of the apparatus, the oxygen-containing gas is fed down the reaction zone in the shell of the carbon-containing substance .
    类似技术:
    公开号 | 公开日 | 专利标题
    SU747410A3|1980-07-23|Reducing gas production method
    US4195985A|1980-04-01|Method of improvement of the heat-balance in the refining of steel
    SU797593A3|1981-01-15|Tuyere nozzle for metal blasting with oxygen and protective gas
    US4153426A|1979-05-08|Synthetic gas production
    SU727153A3|1980-04-05|Method of convertor reprocessing of high-phosphorus cast iron into steel
    KR900007783B1|1990-10-20|Method for producing iron
    SU1503686A3|1989-08-23|Method and apparatus for producing sponge iron or molten iron from iron ore
    CN1015822B|1992-03-11|Nozzle fo solid fuel containing carbon partly burning
    US2321310A|1943-06-08|Smelting iron ore
    SU603349A3|1978-04-15|Method of obtaining liquid pig iron
    GB2082624A|1982-03-10|Method of gas production
    CN87105249A|1988-02-17|A kind of method for partical oxidation of hydrocarbon containing fuels
    US4411697A|1983-10-25|Metal refining processes
    SU1052164A3|1983-10-30|Method for continuous gasification of coal
    US2837419A|1958-06-03|Reduction of metal oxides
    US2337551A|1943-12-28|Process of producing gas mixtures for synthetic purposes
    CA1076360A|1980-04-29|Method and apparatus for continuous gasification, of solid and/or fluid carbon-containing and/or hydro-carbon-containing substances in molten iron in a reaction vessel
    US4639269A|1987-01-27|Method and apparatus for the reducing treatment of molten metals and/or slags thereof
    US3933445A|1976-01-20|Process and apparatus for preventing deposits on a gas inlet nozzle
    EP0419868B1|1994-11-09|Method of in-bath smelting reduction of metals and in-bath smelting reduction furnace
    SU1024013A3|1983-06-15|Method of gasifying coal with low calorific power
    US2650161A|1953-08-25|Production of iron in a blast furnace
    US3619177A|1971-11-09|Process for deoxidizing copper with natural gas-air mixture
    SU680634A3|1979-08-15|Method of obtaining hydrogen and carbon monoxide from hydrocarbons
    US2650160A|1953-08-25|Production of iron sponge from iron ore
    同族专利:
    公开号 | 公开日
    DE2520938A1|1976-11-18|
    DE2520938C3|1980-03-06|
    JPS5763609A|1982-04-17|
    DE2520938B2|1979-07-05|
    JPS585229B2|1983-01-29|
    JPS52704A|1977-01-06|
    PL106719B1|1980-01-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3840355A|1972-06-28|1974-10-08|Texaco Inc|Partial oxidation of hydrocarbons to synthesis gas|
    JPS5111249B2|1972-08-23|1976-04-09|
    JPS4945999A|1972-09-05|1974-05-02|DE2620454A1|1976-05-08|1977-11-24|Kloeckner Humboldt Deutz Ag|Gasification of fuels in molten metal bath - with cooling of the reducing gas by mixing with blast furnace gas|
    DE3024977A1|1980-07-02|1982-01-28|Klöckner-Humboldt-Deutz AG, 5000 Köln|METHOD FOR PRODUCING REACTION GAS|
    DE3031680C2|1980-08-22|1988-02-25|Kloeckner Cra Technologie Gmbh, 4100 Duisburg, De|
    SE426403B|1981-05-20|1983-01-17|Ips Interproject Service Ab|Carbon gasification process|
    DE3219562C2|1982-05-25|1985-01-10|Klöckner-Werke AG, 4100 Duisburg|Process for supplying coal to a steelworks|
    SE435732B|1983-03-02|1984-10-15|Ips Interproject Service Ab|PROCEDURE FOR THE MANUFACTURING OF IRON|
    DE3318005C2|1983-05-18|1986-02-20|Klöckner CRA Technologie GmbH, 4100 Duisburg|Process for making iron|
    DE3332970A1|1983-09-13|1985-04-04|Mannesmann AG, 4000 Düsseldorf|REACTOR FOR THE PRODUCTION OF REACTION GAS|
    DE3529740C1|1985-08-20|1987-01-08|Greul Artur Richard|Process and equipment for gasifying carbonaceous wastes, if appropriate with addition of toxic and highly toxic wastes, to give synthesis gas|
    DE3608005C2|1986-03-11|1988-11-10|Dornier System Gmbh, 7990 Friedrichshafen, De|
    JPH0617064U|1992-08-13|1994-03-04|山武ハネウエル株式会社|Limit switch|
    US7625847B2|2002-08-05|2009-12-01|Nippon Oil Corporation|Lubricating oil compositions|
    US7563752B2|2002-08-05|2009-07-21|Nippon Oil Corporation|Lubricating oil compositions|
    WO2004020557A1|2002-08-27|2004-03-11|Nippon Oil Corporation|Lubricating composition|
    JP4578115B2|2004-02-04|2010-11-10|Ｊｘ日鉱日石エネルギー株式会社|Lubricating oil composition|
    JP5446505B2|2009-06-26|2014-03-19|Ｊｆｅスチール株式会社|Melting reduction method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2520938A|DE2520938C3|1975-05-10|1975-05-10|Process for the continuous production of a reducing gas consisting essentially of carbon monoxide and hydrogen|
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