• 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 the production of high temperature process gases used in the direct production of iron. The aim of the invention is to increase cleaning efficiency and reduce operating costs. The cooling gas is obtained exclusively by preparation of the generator gas. There is one cooling and cleaning unit for excess gas and a cooling gas. Through the back of the cooling and cleaning units for the cooling gas, a constant flow of gas is carried out using a constant volume feeding device. A portion of the generating gas, which exceeds this gas flow, is supplied to the cooling and cleaning units for the cooling gas and is directed to the cooling and cleaning units for excess gas. The cooling and cleaning units can be performed in two steps, namely, each consisting of a sealing scrubber 3 or 6 and a connected relocatable Venturi scrubber 5 or 8. Each can be used as a constant-volume feeder. A blower 11 can be used. in the cooling gas circulation, the parts of the generating gas supplied to the cooling and purification units for the cooling gas between the release of the sealing scrubber 6 of this unit and the inlet of the cooling scrubber 5 will clean aggregates ceiling elements provided for excess gas conduit 13. Due to this, regardless of subsumed with sealing scrubber 6, 3 amounts of gas through venturi scrubbers 5, 8 always takes a constant amount of gas. The waste cooling gas is returned to the cooling and cleaning unit for the cooling gas.
    公开号:SU1561828A3
    申请号:SU4027780
    申请日:1986-07-01
    公开日:1990-04-30
    发明作者:Вулетич Богдан
    申请人:Корф Инжинеринг Гмбх (Фирма)；Фоест-Альпине Аг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the production of high-temperature technologies used for the direct production of iron.
    The purpose of the invention is to increase the cleaning efficiency and reduce operating costs.
    In an advantageous embodiment of the proposed device, each cooling and cleaning unit has a sealing scrubber and a rearranged Venturi scrubber connected to the latter. In this case, it is preferable to provide a connecting pipe from the outlet of the sealing scrubber of the cooling and o. cleaning units for cooling gas to the inlet of the Venturi scrubber of the cooling and cleaning units for excess gas. This device is particularly distinguished by the fact that in the cooling and purification units for cooling gas, after the branch for the connecting pipe or behind this unit (a feed device with a constant flow rate is located.
    The drawing schematically shows cooling and purification units for generator gas and blast furnace gas from a direct recovery unit and a melting gas generator.
    The blast furnace gas of a direct reduction shaft furnace is fed to the units through a pipeline 1, and a portion of the generator gas formed in the melting gas generator that is blown directly into the reduction zone of a direct reduction shaft furnace is supplied to the units. The blast furnace gas under pressure flows from the pipeline 1 to the sealing scrubber 3, in which it is cooled to the desired temperature and pre-washed. The blast furnace gas thus prepared is carried out via line 4 to a rearranged Venturi scrubber 5.
    The part of the generator gas flowing through pipeline 2 enters the densification scrubber 6, in which this gas is cooled in the same way to the desired temperature and pre-washed. A portion of the gas pretreated in this way is passed through a conduit 7 to a rearranged Venturi scrubber 8, in which it is washed again, so that the required dust content in the purified gas is achieved. In the connected droplet separator 9, this gas is dehydrated and flows through the pipe 10 to the blower 11, by which it is brought to the required pressure in order to serve as cooling gas in the pipe 12 mainly for setting the temperature of the generator gas.
    The blower 11 is a volume-feeding device that always delivers the same amount of gas at a constant pressure in the installation, so a constant amount of gas flows through the Venturi scrubber 8. Since the amount of gas supplied through line 2 does not correspond to the amount of gas supplied by the blower 11, the outlet pipe of the sealing scrubber 6 branches into a pipe 7 and a pipe 13 directing the amount of gas not received by the pipe 7 to the inlet of the Venturi 5.
    The blast furnace gas prepared in the sealing scrubber 3 is supplied to the latter via a pipeline 4, and part of the generator gas prepared in the sealing scrubber L is supplied through a pipe 13. The sum of both quantities of gas, even under extraordinary operating conditions, is basically constant. A droplet separator 14 is also connected to the Venturi scrubber 5 for dewatering the purified gas. Pipeline 15 purified and cooled. The unit’s excess gas is supplied to the respective consumers.
    The cooling gas located in the pipeline 12, since it is not required to directly recover from the melter gas generator and the shaft furnace, is again fed through the branch pipe 16 to the inlet of the sealing scrubber 6, due to which the venturi 8 always flows through the venturi scrubber 8 regardless of the need for the recovery installation in the cooling gas approximately constant amount of gas.
    Both sealing scrubbers .3 and 6 are relatively insensitive to large fluctuations in the amount of gas passing through them. In them, removing gases - ό
    dust, therefore, the amount of dust removed by washing in Venturi scrubbers 3 or 8 is relatively small, and there is no risk of clogging of these scrubbers. Due to this, gases with extremely low dust content in the purified gas of 5 mg / norm м m 3 can be obtained at the venturi scrubber outlet.
    The nature of the operation of the Venturi scrubbers depends on the amount of gaea conducted through them. Due to the constant volume of gas supply to the blower 11 and the pipe 13 between the outlet of the sealing scrubber 6 and the inlet of the Venturi scrubber 5, a constant flow of gas through the scrubbers 5 and 8 is ensured. Therefore, it is possible to achieve optimal degrees of separation for the Venturi scrubber 5 due to the fact that it is unnecessary in the smelter system of a gas generator and direct reduction shaft furnace, a part of the total amount of gas obtained in the melting gas generator is discharged as excess only by means of this scrubber Venturi, and for the Venturi scrubber 8, due to the fact that only the amount of gas is passed through the latter, which is necessary in the system from a melting gas generator and a direct reduction shaft furnace, as a cooling and supply gas. This ensures that under all production conditions, the dust content in the purified gas does not exceed the specified values. Since Venturi scrubbers only perform final gas cleaning, clogging the latter with too much dust is not dangerous. Thus, this device not only gives excellent production results, but also works without failures with simple maintenance.
    权利要求:
    Claims (7)
    [1]
    Claim
    1. A device for producing cooling and excess gases from the generator gas obtained in the melting gasifier and blast furnace gas, containing cooling and purification units connected by pipelines, a supercharger, as a result of which the purpose of increasing the efficiency of cleaning and reducing. operating costs, device
    Yu made in the form of two branches connected by a pipeline receiving cooling and excess gases, each of which is equipped with independent cooling and cleaning units—
    15, while one end of the connecting pipe is connected to the outlet of the cooling unit of the cooling gas receiving branch, and the other to the inlet of the cleaning unit 20 and the excess gas receiving branch, and the supercharger is installed on the cooling gas receiving line behind the cleaning unit.
    [2]
    2. The device pop. 1, t l and 25, characterized in that the cleaning units are made in two stages.
    [3]
    3. The device according to p. 1, characterized in that it is cooling -
    The 30 and cleaning units are made in the form of a scrubber and a Venturi scrubber connected to it.
    [4]
    4. The device popp. 1-3, characterized in that the output of the scrubber of the cooling gas production line is connected by a pipe to the inlet of the venturi-scrubber of the excess gas production line.
    [5]
    5. The device according to paragraphs. 1 - 4, characterized in that it is equipped with droplet separators attached to the venturi-scrubber outlet.
    [6]
    6. The device according to paragraphs. 1 to 5, characterized in that the supercharger is made in the form of a blower.
    [7]
    7. The device according to paragraphs. 1 - 6, characterized in that the output;. the blowers are connected by a pipe to the inlet of the scrubber of the cooling gas production line.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1561828A3|1990-04-30|Apparatus for producing cooling and overflow gases from generator gas obtained in melting gasifier, and from blast-furnace gas
    SU1313354A3|1987-05-23|Method for reducing disperse iron ore to iron sponge with subsequent remelting to cast iron and device for effecting same
    SU673147A3|1979-07-05|Fluorine retaining plant
    CN102084009B|2013-10-30|Process gas purification device for melt reduction device for extracting pig iron
    CN202173873U|2012-03-28|System for drying, dedusting and purifying gas generated during steel production and coal gasification
    US4462206A|1984-07-31|Gas turbine-steam power plant
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    US3352088A|1967-11-14|Method for drawing off converter gases
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    同族专利:
    公开号 | 公开日
    US4850574A|1989-07-25|
    EP0210435A3|1989-11-23|
    BR8603067A|1987-03-17|
    EP0210435B1|1991-08-28|
    KR940001529B1|1994-02-23|
    AU595532B2|1990-04-05|
    CA1283542C|1991-04-30|
    JPS6284184A|1987-04-17|
    CN86104420A|1987-02-04|
    CS470586A2|1990-10-12|
    DD247917A5|1987-07-22|
    DE3524011A1|1987-01-15|
    CS274656B2|1991-09-15|
    KR870001293A|1987-03-12|
    IN165848B|1990-01-27|
    US4793857A|1988-12-27|
    JPH0768526B2|1995-07-26|
    AU5855586A|1987-01-22|
    DE3524011C2|1989-01-05|
    DE3681090D1|1991-10-02|
    EP0210435A2|1987-02-04|
    CN1011418B|1991-01-30|
    ZA864394B|1987-02-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US8496729B2|2008-06-27|2013-07-30|Siemens Vai Metals Technologies Gmbh|Process gas purification device for a melt reduction system for extracting pig iron|AT247385B|1961-05-16|1966-06-10|Zd Y Na Vyrobu Vzduchotechnick|Dry cleaning process for blast furnace gas|
    GB1582232A|1976-08-14|1981-01-07|Lodge Cottrell Ltd|Gas cleaning|
    US4316739A|1979-07-16|1982-02-23|Midrex Corporation|Method for producing molten iron|
    US4330511A|1980-03-17|1982-05-18|Peter F. Loftus Corporation |Treatment of blast furnace off-gas|
    DE3034539C2|1980-09-12|1982-07-22|Korf-Stahl Ag, 7570 Baden-Baden|Method and device for the direct production of liquid pig iron from lumpy iron ore|
    SU1479006A3|1984-11-26|1989-05-07|Фоест-Альпине |Method of producing molten iron or steel products and reducing gas in melting gasifier|US5320676A|1992-10-06|1994-06-14|Bechtel Group, Inc.|Low slag iron making process with injecting coolant|
    US5354356A|1992-10-06|1994-10-11|Bechtel Group Inc.|Method of providing fuel for an iron making process|
    US6197088B1|1992-10-06|2001-03-06|Bechtel Group, Inc.|Producing liquid iron having a low sulfur content|
    US5397376A|1992-10-06|1995-03-14|Bechtel Group, Inc.|Method of providing fuel for an iron making process|
    US5958107A|1993-12-15|1999-09-28|Bechtel Croup, Inc.|Shift conversion for the preparation of reducing gas|
    AT405520B|1996-05-15|1999-09-27|Voest Alpine Ind Anlagen|METHOD FOR REDUCING IMPURITIES IN THE GAS FLOW AND DEVICE FOR IMPLEMENTING IT|
    JPH1157402A|1997-08-13|1999-03-02|Mitsubishi Heavy Ind Ltd|Method and facility for refining gas|
    EP2746408A1|2012-12-21|2014-06-25|Siemens VAI Metals Technologies GmbH|Overheating of an export gas used in a reduction process to balance flow variability and apparatus therefor|
    法律状态:
    2005-05-10| REG| Reference to a code of a succession state|Ref country code: RU Ref legal event code: MM4A Effective date: 20030702 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE3524011A|DE3524011C2|1985-07-02|1985-07-02|
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