• 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:
    The invention relates to apparatus for feeding powdered material to a blast furnace, in particular coal, and is used in metallurgy. Pel invention - increased service life and process efficiency. The operation of the device consists in supplying powdered material to the lance 1 through an arcing-shaped delivery tube, which allows placing its outlet hole closer to the outlet of lance 1, and the presence of a coaxial chamber around it allows air and liquid hydrocarbons to be fed into the lance at the same time. At the same time, the inlet nozzle 6 is equipped with a plasma torch 12. The invention allows reducing the abrasive wear of the feed tube and increasing the efficiency of the process. 5 hp f-ly, 3 ill. (o S CO
    公开号:SU1400512A3
    申请号:SU864027366
    申请日:1986-04-14
    公开日:1988-05-30
    发明作者:Де Ласса Де Прессини Ианн；Шнейдер Мишель
    申请人:Энститю Де Решерш Де Ля Сидерюржи Франсэз /Ирсид/ (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to apparatus for feeding powdered material to a blast furnace, in particular coal, and is used in metallurgy.
    The aim of the invention is to increase the service life and efficiency of the process.
    Figure 1 shows schematically the blast furnace tuyere and auxiliary units, a longitudinal section j in FIG. 2, a tuyere, nozzles, a nozzle attachment and the corresponding placement of the axes of a conventional injection pipe and the proposed pipe, a longitudinal section; and FIG. 3 is a section A-A in FIG. I The device contains a blown furm 1 fixed in the usual way | on the lining of 2 blast furnaces with tempered 3 and boxes 4; The nozzle 5 of the tuyere enters inside the blast furnace above the crucible.
    The nozzle 6 pressed to the supporting spherical surface behind the tuyere 1 is located axially to the tuyere 1 and serves as a hot blow for the supply that enters it from tuyere tuft 7,
    I The nozzle 6 has an inclined nozzle 8 eus 9 which is located at an angle J5 ° to the axis 10 of the nozzle 6 of the tuyere 1 and which introduces a tube along the axis 11 of the powder supply. At the entrance of the nozzle 6 an plasma torch 12 is inserted at an angle to it nozzle 6, covered with lining 13, and equipped with a water cooling system 14,
    I Curved tube (shown | with a broken line in FIG. 2) and its 11 arc forms a circle with a radius of at least 100 inner tube radii to prevent tube wear problems for the supplied carbon,
    Too small a radius of curvature would not ensure placement and removal of the tube with the usual arrangement of the truck and the neighboring nodes,
    A sufficiently large radius of curvature has an additional advantage: it includes the ability to provide for a nozzle attachment, the internal section of which allows the straight or curvilinear tube to be placed in it in different ways.
    Plasma torch 12 uses a blown-out for heating
    from cowers and increase the heat balance of the furnace.
    The use of a curved tube allows the outlet of the tuyere to be pushed forward to prevent problems associated with excessively high temperatures and mechanical abrasion of coal.
    The device works as follows.
    Due to the curvature of the tube, it is possible to introduce it at point I, which is the intersection of axes 9 and 11, located in the tuyere more than ml (44.5 cm instead of 7 cm). At the same time, it enters it at a smaller angle than the angle of inclination (15 °) of axis 10 to axis 9, which is favorable for normal operation of the injection method, as well as for initial adjustment or experimental investigation.
    You can move the tube by moving (rotating with the center in the center of curvature of the tube), during which its axis 11 remains still on the same circumference, more or less from point I forward or backward, in all cases the tube enters the tuyere at an angle a smaller angle of inclination of the axis 10, which reduces the abrasive wear of the walls of the tuyere with coal, which causes the outlet of the discharge tube to be positioned more forward and, as reliably as possible, burn the coal with still existing oxygen, which causes the retraction ti from. tubing for injection.
    The internal section of the nozzle 8 with the nozzle is shown in FIG. 3, the section is formed by two semicircles connected by two rectilinear parts, the radius of these semi-circles and the length of the rectilinear parts is 25 mm.
    This shape allows for free passage of a curved or conventional linear tube.
    The high temperature ensures the combustion of the coal immediately upon its exit from the injection tube. It is also important to introduce the discharge tube as far as possible into the tuyere, compared with the usual placement of rigid tubes1 and in order to increase the wear resistance of the tuyere. The curved tube solves this problem.
    3K
    The curvilinear tube itself must be resistant to the high temperatures encountered when using a plasma torch, therefore it is envisaged to cool the tube with one of the three following devices,
    In the first embodiment, a double annular water is fed to the jacket around the central pipeline of the pipe through which the coal-air mixture is supplied. Cooling with a water film (about 2 mm thick) is used, for this purpose ultrapure water, deionized and demineralized, which is required for cooling the plasma torch, is successfully used.
    According to the second variant, the central pipeline of the tube is surrounded by an annular air supply chamber with a high flow rate (for example, 80).
    In the third embodiment, the central pipeline 15 (FIG. 3) is surrounded by an annular chamber 16 equipped for injecting liquid hydrocarbons.
    权利要求:
    Claims (1)
    [1]
    1. A device for supplying powdered material to a blast furnace, in particular coal containing blast
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    blast furnace tuyere, coaxial nozzle with hot tuft, blowing with nozzle at an angle to nozzle and tuyere, powder supply tube installed in nozzle with outlet to tuyere, characterized in that, in order to increase service life and process efficiency , tube; powder feed is made arc-shaped and mounted with a convex part to the axis of the nozzle and tuyere,
    2, the apparatus according to claim 1, characterized in that the curvature of the arc of the tube for feeding the powder is at least 100 internal diameters of the tube,
    3, a device in PP, 1 and 2, characterized in that the tube is complete with a double annular casing for the circulation of water,
    4, the device according to claims 1 and 2, characterized in that the tube is made with an annular air supply chamber with a high flow rate or a supply of liquid hydrocarbons.
    5, The device according to claims 1-4, which is such that the nozzle attachment is made with a cooling jacket,
    6, the device according to claims 1-5, characterized in that it is provided with a plasma torch mounted at the inlet of the nozzle.
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    类似技术:
    公开号 | 公开日 | 专利标题
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    JPH10237515A|1998-09-08|Lance pipe for blast furnace
    CA1260766A|1989-09-26|Burner
    US691337A|1902-01-14|Apparatus for feeding fine fuel.
    USRE23372E|1951-06-05|Fluid burner with auxiliary
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    同族专利:
    公开号 | 公开日
    DE3665076D1|1989-09-21|
    JPS6236390U|1987-03-04|
    JPH0245757Y2|1990-12-04|
    US4700930A|1987-10-20|
    EP0199662A1|1986-10-29|
    FR2580296A1|1986-10-17|
    ZA862764B|1986-12-30|
    EP0199662B1|1989-08-16|
    BR8601681A|1986-12-16|
    ES8703527A1|1987-02-16|
    CA1278680C|1991-01-08|
    FR2580296B1|1987-07-10|
    CN1003863B|1989-04-12|
    ES553955A0|1987-02-16|
    AT45593T|1989-09-15|
    CN86102628A|1986-11-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR577454A|1922-12-18|1924-09-05|Cie Auxiliaire D Electricite E|Pulverized coal burners improvements|
    FR586015A|1923-11-23|1925-03-13|Ile Des Brevets Joullie Soc Ci|Blast furnace fuel injection device and other metallurgical devices|
    US3166621A|1961-03-16|1965-01-19|Colorado Fuel & Iron Corp|Burner tuyere arrangement for a blast furnace|
    GB951043A|1962-01-12|1964-03-04|British Petroleum Co|Improvements relating to the injection of fluid fuels into blast furnaces|
    DE1433317A1|1962-06-23|1968-11-07|Salzgitter Huettenwerk Ag|Device for introducing liquid, gaseous or dust-like fuels into the frame of a shaft furnace, primarily a blast furnace|
    FR1559679A|1967-12-08|1969-03-14|
    DE2912441C2|1979-03-29|1982-09-23|ARBED S.A., 2930 Luxembourg|Process for the continuous injection of fine-grained brown coal into the frame of a blast furnace|
    US4278367A|1979-07-05|1981-07-14|Cyclonaire Corporation|Feeder apparatus for pneumatic conveying lines|
    FR2501833B1|1981-03-10|1985-05-31|Stein Industrie|DEVICE FOR INTRODUCING AND COMBUSTING A SOLID FUEL SPRAYED INTO A PRESSURE ENCLOSURE|
    US4490171A|1982-03-31|1984-12-25|Kobe Steel, Limited|Method and apparatus for injecting pulverized fuel into a blast furnace|DE4136274A1|1991-11-04|1993-05-06|Kortec Ag, Zug, Ch|METHOD AND DEVICE FOR PROTECTING A BLOWING DEVICE ARRANGED IN A HOT WIND LINE OF A BLAST FURNACE|
    US5227117A|1992-05-29|1993-07-13|Usx Corporation|Apparatus for blast furnace fuel injection|
    ES2123018T3|1992-07-01|1999-01-01|Wurth Paul Sa|DEVICE FOR INJECTION OF SPRAYED COAL IN A HIGH-FURNACE POT.|
    CA2073707C|1992-07-13|1998-04-21|Raymond Lemay|Pneumatic injection of powder or granule through submerged tuyeres|
    JP5125819B2|2008-07-02|2013-01-23|Ｊｆｅスチール株式会社|Vertical melting furnace and hot metal manufacturing method|
    LU91691B1|2010-05-26|2011-11-28|Wurth Paul Sa|Tuyere stock arrangement of a blast furnace|
    CN101864503A|2010-06-22|2010-10-20|新兴河北工程技术有限公司|Water-cooled straight blast pipe|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8505635A|FR2580296B1|1985-04-15|1985-04-15|DEVICE FOR INJECTING POWDERY MATERIAL, ESPECIALLY COAL, INTO A BLAST FURNACE|
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