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29 条记录 (耗时 0.017 秒)

    Boiler
    21.
    发明公开
    Boiler 有权
    凯塞尔

    公开(公告)号：EP0981017A2

    公开(公告)日：2000-02-23

    申请号：EP99115289.3

    申请日：1999-08-02

    申请人： Hitachi, Ltd. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Yamamoto, Kenji ,  Kobayashi, Hironobu ,  Okazaki, Hirofumi ,  Tsumura, Toshikazu ,  Kiyama, Kenji

    IPC分类号： F23C7/02 ,  F23C7/00 ,  F23C5/00 ,  F23C6/04 ,  F22B31/00 ,  F28G1/16

    CPC分类号： F23C5/00 ,  F22B31/00 ,  F23C6/047 ,  F23C7/008 ,  F23C7/02 ,  F23C2201/101 ,  F28F19/00 ,  Y02E20/328

    摘要： The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combustion chamber (13) formed by front (14a) and rear walls (14b)(burner walls) provided with a plural stages of burners (2,3 and 4) on at least one of them and opposing to each other, and side walls (1a and 1b) crossing to said burner walls (14a and 14b), a gas port (6) containing no fuel for making a pressure of a gas near said side walls (1a and 1b) within said combustion chamber (13) higher than a pressure of a gas at a center portion of said combustion chamber (13) is provided between an outermost burner and the side walls (1a and 1b) within a range of a height of said burner stages (2,3 and 4). A combustion gas (16) can not come close to the side walls (1a and 1b) due to the jet (18) of the gas.

    摘要翻译： 本发明提供了一种具有低成本装置的锅炉，其能够在侧壁附近降低CO浓度，未燃烧物质，附着灰分等，并且以简单的结构保持良好的燃烧状态。 在具有由前面（14a）和后壁（14b）（燃烧器壁）形成的燃烧室（13）的锅炉中，所述燃烧室在其至少一个上设置有多级燃烧器（2,3和4）并与每个燃烧室 其他和与所述燃烧器壁（14a和14b）相交的侧壁（1a和1b），不包含用于在所述燃烧室内的所述侧壁（1a和1b）附近形成气体的燃料的气体端口（6） 在所述燃烧器级（2,3）的高度的范围内，在最外侧的燃烧器与所述侧壁（1a，1b）之间设置高于所述燃烧室（13）的中央部的气体的压力 和4）。 由于气体的喷射（18），燃烧气体（16）不能靠近侧壁（1a和1b）。

    Pulverized coal combustion burner
    22.
    发明公开
    Pulverized coal combustion burner 失效
    Kohlenstaubbrenner。

    公开(公告)号：EP0672863A2

    公开(公告)日：1995-09-20

    申请号：EP95301785.2

    申请日：1995-03-17

    申请人： HITACHI, LTD. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Narato, Kiyoshi ,  Kobayashi, Hironobu ,  Taniguchi, Masayuki ,  Kohno, Tsuyoshi ,  Okazaki, Hirofumi ,  Ito, Kazuyuki ,  Morita, Shigeki ,  Baba, Akira

    IPC分类号： F23D1/00 ,  F23K3/02 ,  F23C9/00 ,  F23C6/04

    CPC分类号： F23D1/00 ,  F23C6/047 ,  F23C9/006 ,  F23C2201/301 ,  F23K3/02

    摘要： A pulverized coal combustion burner includes a pulverized coal nozzle (1), and secondary and tertiary air nozzles (70,80) provided in concentric relation to the pulverized coal nozzle. A flame stabilizing ring (5) is provided at an outlet end of the pulverized coal nozzle. A separation wall (2) is provided within the pulverized coal nozzle to divide a passage in this nozzle into two passages. A pulverized coal/air mixture flows straight through the two passages, so that recirculation flows of the pulverized coal/air mixture are formed in proximity to the outlet end of the pulverized coal nozzle. As a result, the ignitability of the pulverized coal, as well as a combustion rate, is enhanced, thereby reducing the amount of discharge of NOx.

    摘要翻译： 粉煤燃烧器包括粉煤喷嘴（1）和与粉煤喷嘴同心设置的二次和三次空气喷嘴（70,80）。 火焰稳定环（5）设置在粉煤喷嘴的出口端。 在煤粉喷嘴内设有分隔壁（2），将该喷嘴中的通道分成两段。 粉煤/空气混合物直接流过两个通道，使得粉煤/空气混合物的再循环流动形成在煤粉喷嘴出口附近。 结果，粉煤的可燃性以及燃烧速度提高，从而减少NOx的排放量。

    Boiler
    24.
    发明公开
    Boiler 有权
    锅炉

    公开(公告)号：EP0981017A3

    公开(公告)日：2000-03-29

    申请号：EP99115289.3

    申请日：1999-08-02

    申请人： Hitachi, Ltd. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Yamamoto, Kenji ,  Kobayashi, Hironobu ,  Okazaki, Hirofumi ,  Tsumura, Toshikazu ,  Kiyama, Kenji

    IPC分类号： F23C7/02 ,  F23C7/00 ,  F23C5/00 ,  F23C6/04 ,  F22B31/00 ,  F28G1/16

    CPC分类号： F23C5/00 ,  F22B31/00 ,  F23C6/047 ,  F23C7/008 ,  F23C7/02 ,  F23C2201/101 ,  F28F19/00 ,  Y02E20/328

    摘要： The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combustion chamber (13) formed by front (14a) and rear walls (14b)(burner walls) provided with a plural stages of burners (2,3 and 4) on at least one of them and opposing to each other, and side walls (1a and 1b) crossing to said burner walls (14a and 14b), a gas port (6) containing no fuel for making a pressure of a gas near said side walls (1a and 1b) within said combustion chamber (13) higher than a pressure of a gas at a center portion of said combustion chamber (13) is provided between an outermost burner and the side walls (1a and 1b) within a range of a height of said burner stages (2,3 and 4). A combustion gas (16) can not come close to the side walls (1a and 1b) due to the jet (18) of the gas.

    A combustion burner of fine coal powder, and a combustion apparatus of fine coal powder
    27.
    发明公开
    A combustion burner of fine coal powder, and a combustion apparatus of fine coal powder 审中-公开
    Feinkohlenstaubbrenner und Feinkohlenstaubverbrennungsvorrichtung

    公开(公告)号：EP1033532A1

    公开(公告)日：2000-09-06

    申请号：EP00103823.1

    申请日：2000-02-23

    申请人： Hitachi, Ltd. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Okazaki, Hirofumi ,  Kobayashi, Hironobu ,  Tsumura, Toshikazu ,  Kiyama, Kenji ,  Jinbo, Tadashi ,  Kuramashi, Koji ,  Morita, Shigeki ,  Nomura, Shinichiro ,  Shimogori, Miki

    IPC分类号： F23D1/00 ,  F23C6/04

    CPC分类号： F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/10

    摘要： A burner for burning fine coal powder comprising: a fine coal powder nozzle (10) for injecting a mixture of the fine coal powder and air; and air nozzles (11,12) for injecting air: wherein the sufficient amount of air for complete combustion of the fine coal powder is supplied from the air nozzles; a reducing flame (18) at a high temperature is formed by consuming oxygen rapidly with forming a flame at a high temperature by igniting the fine coal powder rapidly in the vicinity of the outlet of the burner; and an oxidizing flame (19) having an uniform distribution of gas composition in radial direction to the central axis of the burner is formed by mixing the air injected from the air nozzle in the downstream of the reducing flame at the high temperature.

    摘要翻译： 一种用于燃烧煤粉的燃烧器，包括：用于喷射细煤粉和空气的混合物的细粉煤喷嘴（10）; 以及用于喷射空气的空气喷嘴（11,12），其中从所述空气喷嘴供给足够量的用于煤粉完全燃烧的空气; 通过在燃烧器的出口附近快速点燃细煤粉，在高温下形成火焰快速消耗氧而形成高温还原火焰（18） 并且通过在高温下将从空气喷嘴喷射的空气在还原火焰的下游混合而形成具有径向相对于燃烧器的中心轴线的气体组成分布均匀的氧化火焰（19）。

    Pulverized coal burner and method of using same
    29.
    发明公开
    Pulverized coal burner and method of using same 失效
    Kohlenstaubbrenner和Verfahren zu seiner Anwendung

    公开(公告)号：EP0690264A2

    公开(公告)日：1996-01-03

    申请号：EP95109995.1

    申请日：1995-06-27

    申请人： HITACHI, LTD. ,  BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Kobayashi, Hironobu ,  Narato, Kiyoshi ,  Taniguchi, Masayuki ,  Kouno, Tsuyoshi ,  Okazaki, Hirofumi ,  Morita, Shigeki ,  Tsumura, Toshikazu

    IPC分类号： F23D1/00 ,  F23C7/00 ,  F23D17/00

    CPC分类号： F23C7/006 ,  F23D1/00 ,  F23D17/007

    摘要： To provide a pulverized coal burner capable of reducing the NOx concentration at the time of a low load, a pulverized coal burner includes a secondary air nozzle (103) and a tertiary air nozzle (104) concentrically positioned about the outer periphery of a fuel nozzle (102) carrying a pulverized coal with a primary air (135), and two swirling flow generators (113, 114) are included at least one of these nozzles (104) with a positional relation parallel to a flow of air. One of the swirling flow of the two swirling flow generators (113, 114) can be set strongly. And, under a condition of low air flow rate, air can be supplied from one swirling flow generator (112) alone.
    Since the swirling strength of the combustion air can be increased, the concentration of NOx produced by the combustion of the pulverized coal can be reduced. Since the swirling strength at the time of the low load can be increased, the NOx concentration can be reduced by keeping the pulverized coal flame stable.

    摘要翻译： 为了提供能够降低低负荷时的NOx浓度的粉煤燃烧器，粉煤燃烧器包括二次空气喷嘴（103）和三相空气喷嘴（104），其围绕燃料喷嘴的外周同心定位 （102），其具有主空气（135）的粉煤和两个旋流产生器（113,114），其中所述喷嘴（104）中的至少一个具有与空气流平行的位置关系。 两个旋流产生器（113,114）的回旋流中的一个可以强烈地设定。 并且，在空气流量低的条件下，可以单独从一个旋流发生器（112）供应空气。 由于能够提高燃烧空气的旋转强度，所以能够降低粉煤的燃烧产生的NOx的浓度。 由于能够提高低负荷时的旋转强度，因此能够通过保持粉煤火焰稳定而降低NOx浓度。