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138 条记录 (耗时 0.019 秒)

    METHOD FOR OPERATING BLAST FURNACE
    81.
    发明公开
    METHOD FOR OPERATING BLAST FURNACE 审中-公开
    BETRIEBSVERFAHRENFÜREINEN VERBRENNUNGSOFEN

    公开(公告)号：EP2653563A4

    公开(公告)日：2017-03-08

    申请号：EP11856085

    申请日：2011-07-15

    申请人： JFE STEEL CORP

    发明人： FUJIWARA DAIKI ,  MURAO AKINORI ,  WATAKABE SHIRO ,  KITAHARA MASAYUKI

    IPC分类号： C21B5/00 ,  C21B5/06 ,  C21B7/00 ,  C21B7/16

    CPC分类号： C21B5/003 ,  C21B5/06 ,  C21B7/163 ,  C21B2005/005 ,  C21B2100/26 ,  C21B2100/60 ,  Y02P10/283

    摘要： Provided is a method for operating a blast furnace in which further improvement in combustion temperature and further reduction of the specific consumption of reducing agents are possible. A double tube lance is used as a lance 4 through which reducing agents are injected into a blast furnace via a tuyere 3. By injecting a solid reducing agent such as pulverized coal 6 and an inflammable reducing agent such as an utility gas 9 through the double tube lance 4 and by setting the oxygen excess ratio of air blown to the tuyere 3 to be from 0.7 to 1.3, there is a significant increase in the temperature of the pulverized coal 6 due to the utility gas 9 which contacts O 2 contained in the blown air in first being burnt, which causes an increase in the heating rate of the pulverized coal 6 and the pulverized coal 6 being sufficiently burnt. As a result, there is a significant increase in combustion temperature, which makes it possible to reduce the specific consumption of reducing agents. At the same time, it is possible to prevent the double tube lance 4 from being deformed due to the increased temperature by setting the flow velocity at the exit of the outer tube of the double tube lance 4 to be from 20 m/sec to 120 m/sec.

    摘要翻译： 本发明提供一种高炉的运转方法，能够进一步提高燃烧温度，并且能够进一步降低还原剂的比耗。 双管喷枪用作喷枪4，还原剂通过喷枪3通过风口3喷射到高炉中。通过双喷嘴将固体还原剂如煤粉6和可燃性还原剂如商用气体9喷射到高炉 通过将喷吹到风口3的空气的氧过剩率设定为0.7〜1.3，由于接触了包含在风筒3中的O 2的市电气体9，煤粉6的温度显着上升 首先吹入的空气被燃烧，这导致粉煤6和煤粉6充分燃烧的加热速率增加。 结果，燃烧温度显着增加，这使得可以减少还原剂的特定消耗量。 同时，通过将双管喷枪4的外管的出口处的流速设定为从20m / sec到120，可以防止由于升高的温度导致双管喷枪4变形 米/秒。

    METHOD FOR OPERATING OXYGEN BLAST FURNACE
    82.
    发明公开
    METHOD FOR OPERATING OXYGEN BLAST FURNACE 有权
    一种用于操作高氧炉

    公开(公告)号：EP3124626A1

    公开(公告)日：2017-02-01

    申请号：EP15768555.3

    申请日：2015-03-23

    申请人： JFE Steel Corporation

    发明人： NOUCHI Taihei ,  TAKAHASHI Koichi ,  TERUI Koki ,  SATO Michitaka ,  YOSHIOKA Aya

    IPC分类号： C21B5/00

    CPC分类号： C21B5/06 ,  C21B5/003 ,  C21B2005/005 ,  Y02P10/283

    摘要： [TASK]
    It is to propose a method of operating an oxygen blast furnace which is capable of lowering the temperature in the combustion zone at the tuyere tip while decreasing an emission amount of CO 2 as compared to the conventional ones.
    [SOLUTION]
    In a method of operating an oxygen blast furnace by blowing at least pure oxygen from tuyeres to generate blast furnace gas containing a small amount of nitrogen from a furnace top, a temperature of a combustion zone at a tuyere tip is lowered by blowing a tuyere-blowing gas, in which the sum of volume fractions of hydrocarbon and hydrogen is not less than 50%, together with the pure oxygen from the tuyeres.

    Verfahren und Vorrichtung zur Herstellung von flüssigem Roheisen oder flüssigem Stahlvorprodukt
    87.
    发明公开
    Verfahren und Vorrichtung zur Herstellung von flüssigem Roheisen oder flüssigem Stahlvorprodukt 审中-公开
    用于制造液体生铁或钢液预方法和装置

    公开(公告)号：EP2677043A1

    公开(公告)日：2013-12-25

    申请号：EP12172875.2

    申请日：2012-06-21

    申请人： Siemens VAI Metals Technologies GmbH

    发明人： Hötzinger, Stefan ,  Millner, Robert ,  Rein, Norbert ,  Wieder, Kurt ,  Wurm, Johann

    IPC分类号： C21B5/00 ,  C21B5/06 ,  C21B13/14

    CPC分类号： C21B5/008 ,  C21B5/06 ,  C21B13/14 ,  Y02P10/265 ,  Y02P10/283

    摘要： Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur zur Herstellung von flüssigem Roheisen oder flüssigem Stahlvorprodukt (21). Dabei wird Sinter (5) in eine Reduktionszone (6) eines Schmelzreduktionssystems (11) eingebracht und ein im Sinter (5) enthaltenes eisenoxidhältiges Material (33) wird mittels eines Reduktionsgases (19) in der Reduktionszone (6) des Schmelzreduktionssystems (11) reduziert und anschließend und in einer Schmelzzone (26) des Schmelzreduktionssystems (11) zu dem flüssigen Roheisen oder dem flüssigen Stahlvorprodukt (21) aufgeschmolzen. Der Sinter (5) wird mit einer Temperatur von mehr als 300°C, bevorzugt mehr als 500°C, besonders bevorzugt mehr als 600°C in die Reduktionszone (6) des Schmelzreduktionssystems (11) eingebracht.

    摘要翻译： 该方法涉及引入烧结（5）进入熔炼还原系统（11）的还原区（6），并通过减少气体（19）进入熔炼还原系统的还原区还原烧结含有铁基氧化物材料（33）。 液体生铁或液态钢前体（21）中的熔化还原系统的熔化区（26）被熔化。在特定的值的温度下加热烧结，被引入熔化还原系统的还原区。一个独立claimsoft是 包括用于生产液体生铁或液态钢前体的设备。

    BLAST FURNACE OPERATION METHOD
    88.
    发明公开
    BLAST FURNACE OPERATION METHOD 审中-公开
    高炉操作方法

    公开(公告)号：EP2653565A1

    公开(公告)日：2013-10-23

    申请号：EP11856543.1

    申请日：2011-07-15

    申请人： JFE Steel Corporation

    发明人： MURAO, Akinori ,  FUJIWARA, Daiki ,  WATAKABE, Shiro ,  KITAHARA, Masayuki

    IPC分类号： C21B5/00 ,  C21B7/00

    CPC分类号： C21B5/06 ,  C21B5/003 ,  C21B7/163 ,  C21B2005/005 ,  C21B2100/26 ,  C21B2100/60 ,  Y02P10/283

    摘要： Provided is a method for operating a blast furnace in which further improvement in combustion temperature and further reduction of the specific consumption of reducing agents are possible. By injecting all of pulverized coal (PC: solid reducing agent), a utility gas (inflammable reducing agent) and O 2 (combustion improving gas) so that each of these are separately injected thorough any one of the inner tube lance, the intermediate tube lance and the outer tube lance which constitute a triple tube lance, there is, for example, an explosive diffusion of the pulverized coal caused by the O 2 and the utility gas burning in first and, at the same time, there is a significant increase in the temperature of the pulverized coal due to the combustion heat of the utility gas, which results in an increase in the heating rate of the pulverized coal and a significant improvement in the combustion temperature, which makes it possible to decrease the specific consumption of the reducing agents. In addition, by injecting some of oxygen to be added to a injected air through the triple tube lance, the excessive supply of oxygen to be used can be avoided and the specific consumption of O 2 can be decreased while gas balance in a blast furnace is maintained.

    摘要翻译： 本发明提供一种高炉的运转方法，能够进一步提高燃烧温度，并且能够进一步降低还原剂的比耗。 通过将所有粉煤（PC：固体还原剂），商用气体（可燃性还原剂）和O2（燃烧改善气体）全部注入，使得这些气体分别通过内管喷枪，中间管喷枪 和构成三管喷枪的外管矛杆，例如，首先由O2和公用燃气引起的煤粉的爆炸性扩散，同时， 由于煤气的燃烧热导致粉煤的温度升高，这导致煤粉的加热速率增加并且燃烧温度显着提高，这使得可以减少还原剂的比耗 。 另外，通过从三重管喷枪喷射注入的空气中的一些氧气，可以避免所使用的氧气的过量供应，并且可以在维持高炉中的气体平衡的同时降低O2的比耗量 。