• 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:
    1473942 Shaft furnace operation SKF INDUSTRIAL TRADING & DEVELOPMEMT CO BV 20 March 1974 [26 March 1973] 12377/74 Heading C7 In a shaft furnace employing a blast of oxidizing gas together with injection of oil, coal or coke at tuyere level, the blast is heated by passing at least a part of it through a plasma burner, the latter possibly being located in a conduit leading to the bustle pipe, or individual burners being located adjacent to each tuyere. In the embodiment of Fig. I a part of the (preferably pre-heated) blast supplied through blast main 5 is diverted through plasma unit 11 to which cold air can also be admitted through conduit 13 for temperature control. In an alternative form shown in Fig. 2 a part of the blast flowing from bustle pipe 16 to tuyere 14 is diverted through pipe 17 through the plasma unit 18 to which cold air may also be supplied through pipe 17a. Hydrocarbon or other fuel is injected into the heated blast through pipe 19, or alternatively may be added through orifices surrounding the plasma unit discharge outlet, Fig. 3 (not shown).
    公开号:SU955866A3
    申请号:SU762417000
    申请日:1976-11-03
    公开日:1982-08-30
    发明作者:Сантен Свен；Эрик Грип Карл
    申请人:Скф Индастриал Трейдинг Энд Дивелопмент Компани Б.В. (Фирма)；
    IPC主号:
    专利说明:

    The conduit 4 is guided through pipeline 5 through the plasmatron, the outlet of which is located in the pipe 3 and is directed inwards towards the tuyere 2. The connecting air duct 6 is embedded in the pipeline 5 in front of the plamatron. One nozzle design for introducing additional fuel into the hot air of the plasmatron provided by the invention is shown in FIG. 2. Near the outlet of the blast tube 7 from the plasmatron for supplying, for example, supplied through the pipeline 8, there is provided a slotted slot 9 on the end walls of the plasmatron. The fuel and hot air from the plasmatron are mixed, and this mixture is fed to the lance 10 together with BoS-air blast that does not pass through the plasmatron (arrows .11). The most prominent feature together with the increased temperature, blowing, is increased fuel consumption. A higher temperature is blown, but it also gives the opportunity to use other types of fuel, such as coal or sprayed coke, fuel suspension from coal or {soksa, natural gas, coke oven gas, etc. Other additives in the tuyere zone due to high temperatures to blow are oxide materials, such as water, iron ore, flue gases B, previously reduced oxides of iron, as well as slag formers. The device provides the ability to supply additional fuels to the area of the tuyere of the shaft furnace and to burn it with density. By passing through the plasma, an extremely high gas temperature can be reached. Plasma can predominantly be created, in the so-called plasmatron, which itself is known to be used in other conditions. In the plamatron, plasma is formed in the gas space of the burner. The degree of efficiency of the plasma torch (the plasmatron is 75–85% and is relatively independent of temperature. The temperature of the gas exiting the plasma torch is 3000–4000 s. Due to the direct effect of the additional fuel, this high temperature is reached very fast. converting fuel into gas, which significantly speeds up the process of burning fuel. Venture of the Invention A device for feeding and burning additional fuel in a shaft furnace for producing a liquid metal containing tuyeres with embedded they have plasmatrons with concentric channels, characterized in that, in order to improve gas combustion and prevent overheating of the device walls, plasmatrons are installed coaxially with tuyeres, and concentric channels are made in the face walls of plasmatrons in the form of collectors with slotted nozzles. These are taken into account during the examination. 1. Patent of Romania 50969, class C 21 B, 1969.
    权利要求:
    Claims (1)
    [1]
    Claim
    A device for supplying and burning additional fuel in a shaft furnace for producing liquid metal, containing tuyeres with built-in plasmatrons having concentric channels, characterized in that, in order to improve gas burning and prevent overheating of the walls of the device, the plasmatrons are mounted coaxially with the tuyeres, and concentric channels are made in the end walls of plasmatrons in the form of collectors with slotted nozzles.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU955866A3|1982-08-30|Apparatus for feeding and burning additional fuel in shaft furnace
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    US2446511A|1948-08-03|Open-hearth steelmaking
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    US4556384A|1985-12-03|Burner for pulverized coal
    EP1943461A1|2008-07-16|Process and apparatus for low-nox combustion
    US1393749A|1921-10-18|Blast-furnace
    KR19990037405A|1999-05-25|Method for providing a spray stream into the furnace
    US4072502A|1978-02-07|Method apparatus for increasing blast gas temperature in a shaft furnace
    KR960016161B1|1996-12-04|Process & device for the disposal of dust in a cupola by combustion/slag production
    JP2004091921A|2004-03-25|Method for blowing solid fuel into blast furnace and blown lance
    US3778047A|1973-12-11|Apparatus for generating and delivering combustion gases and reduction gases to a blast furnace
    US2466258A|1949-04-05|Burner for liquid fuel
    KR19990022866A|1999-03-25|How to enter energy into scrap bulk
    KR100761211B1|2007-09-21|A partial combustion burner for preheating oxygen
    US3345054A|1967-10-03|Steel melting and more particularly gas fired regenerative furnaces
    SU1121293A1|1984-10-30|Blowing tuyere of blast furnace
    SU1527270A1|1989-12-07|Blast furnace lance arrangement
    JP3601799B2|2004-12-15|Combustion burners used in melting furnaces for steelmaking
    US3778046A|1973-12-11|Jet engine powered blower for supplying combustion blast gas and reducing gas to a blast furnace
    US2047870A|1936-07-14|Method for producing gas
    SU854991A1|1981-08-25|Method of reagent supply to blast furnace tuyere
    SU1218247A1|1986-03-15|Method of joint combustion of high- and low-reaction fuel
    US4363656A|1982-12-14|Injection of hot gases into shaft furnace
    SU443226A1|1974-09-15|Gas burner
    同族专利:
    公开号 | 公开日
    SE371455B|1974-11-18|
    BE812244A|1974-07-01|
    JPS5746543Y2|1982-10-13|
    CA1043563A|1978-12-05|
    GB1473942A|1977-05-18|
    FR2223647A1|1974-10-25|
    JPS5026701A|1975-03-19|
    JPS55142543U|1980-10-13|
    US3970290A|1976-07-20|
    DE2413580A1|1974-10-17|
    DE2413580C3|1978-12-21|
    FR2223647B1|1977-09-30|
    DE2413580B2|1978-04-27|
    IT1055556B|1982-01-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US975625A|1909-01-14|1910-11-15|William O Bartholomew|Process of extracting iron from its ores.|
    US1393749A|1919-12-08|1921-10-18|American Metal Co Ltd|Blast-furnace|
    SE307420B|1966-02-06|1969-01-07|Penzen Kompressorny Z|
    BE757182A|1969-10-07|1971-03-16|Oesterr Alpine Montan|PROCEDURE FOR MINERAL REDUCTION|US4072504A|1973-01-26|1978-02-07|Aktiebolaget Svenska Kullagerfabriken|Method of producing metal from metal oxides|
    JPS52122786A|1976-04-09|1977-10-15|Hitachi Ltd|Sequence controlling system|
    US4217479A|1977-04-29|1980-08-12|Swiss Aluminium Ltd.|High temperature reactor|
    US4129742A|1977-07-01|1978-12-12|Southwire Company|Plasma arc vertical shaft furnace|
    US4247732A|1979-08-21|1981-01-27|Westinghouse Electric Corp.|Method and apparatus for electrically firing an iron blast furnace|
    LU81976A1|1979-12-10|1981-07-23|Centre Rech Metallurgique|PROCESS FOR INJECTING HOT REDUCING GASES IN A TANK OVEN|
    FR2512535B1|1981-09-07|1987-07-31|Siderurgie Fse Inst Rech|METHOD FOR ENERGY SUPPLY OF A HEATING OVEN FOR METALLURGICAL PRODUCTS|
    FR2512536B1|1981-09-07|1989-09-01|Siderurgie Fse Inst Rech|METHOD FOR SUPPLYING ENERGY TO A HEATING OVEN FOR METALLURGICAL PRODUCTS|
    SE500352C2|1982-04-07|1994-06-06|Nordic Distributor Supply Ab|Ways of extracting metals from liquid slag|
    SE434650B|1982-06-09|1984-08-06|Skf Steel Eng Ab|SEE USE OF PLASM MAGAZINE TO RAISE THE BLESTER TEMPERATURE IN A SHAKT OVEN|
    GB2136939B|1983-03-23|1986-05-08|Skf Steel Eng Ab|Method for destroying refuse|
    SE8304273D0|1983-08-04|1983-08-04|Skf Steel Eng Ab|SET AND DEVICE FOR HEATING A GAS WITH ANOTHER GAS|
    US4666775A|1985-04-01|1987-05-19|Kennecott Corporation|Process for sintering extruded powder shapes|
    US4707583A|1983-09-19|1987-11-17|Kennecott Corporation|Plasma heated sintering furnace|
    US4676940A|1985-04-01|1987-06-30|Kennecott Corporation|Plasma arc sintering of silicon carbide|
    SE462070B|1986-08-11|1990-04-30|Skf Steel Eng Ab|MAKE CONTINUOUSLY SUPERVISED GREAT GAS FLOWS|
    US4853033A|1988-06-29|1989-08-01|Electric Power Research Institute|Method of desulfurizing molten metal in a plasma fired cupola|
    JPH0722696B2|1989-07-29|1995-03-15|新日本製鐵株式會社|Method and apparatus for producing fine powder and method of using the same|
    US5227117A|1992-05-29|1993-07-13|Usx Corporation|Apparatus for blast furnace fuel injection|
    CN109477151A|2017-05-04|2019-03-15|哈奇有限公司|Heating plasma air blast|
    CN107574273A|2017-08-29|2018-01-12|武汉凯迪工程技术研究总院有限公司|Blast-furnace hot-air system temperature regulation and control method and apparatus based on plasma heating|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE7304333A|SE371455B|1973-03-26|1973-03-26|
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