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    Pulverized coal burner, pulverized coal boiler and method of burning pulverized coal
    2.
    发明公开
    Pulverized coal burner, pulverized coal boiler and method of burning pulverized coal 失效
    Kohlenstaubbrenner，Kohlenstaubkessel und Verfahren zum Verbrennen von Kohlenstaub。

    公开(公告)号：EP0445938A1

    公开(公告)日：1991-09-11

    申请号：EP91301441.1

    申请日：1991-02-22

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

    发明人： Kobayashi, Hironobu ,  Narato, Kiyoshi ,  Azuhata, Shigeru ,  Miyadera, Hiroshi ,  Morita, Shigeki ,  Jimbo, Tadashi ,  Hodozuka, Kunio ,  Baba, Akira

    IPC分类号： F23D1/04

    CPC分类号： C04B7/44 ,  F23D1/02 ,  F23D2201/20 ,  F23D2209/20 ,  F23K1/00

    摘要： A burner for pulverized coal has a coal duct (1) for pulverized coal and primary combustion air and a secondary combustion air duct (2) such that the coal and primary air and secondary air mix outside the outlet nozzles of the duct in a mixing zone at which combustion occurs. Coal distribution means (7) in the coal duct create, adjacent the outlet nozzle, at least one outer zone of flow spaced from the coal duct axis and at least one inner zone of flow nearer the coal duct axis. There are means (12) for slowing flow in the outer zone relative to the flow in the inner zone, prior to the mixing zone. To achieve good mixing, and promote NO x reduction, the coal concentration in the outer zone is higher than in the inner zone. The slowing means (12) may be radially inwardly projecting baffles.

    摘要翻译： 用于粉煤的燃烧器具有用于粉煤和一次燃烧空气的煤管（1）和二次燃烧空气通道（2），使得煤和一次空气和二次空气在混合区域的管道的出口喷嘴外部混合 发生燃烧。 煤通道中的煤分配装置（7）在出口喷嘴附近产生与煤管轴线间隔开的至少一个外部区域和至少一个更接近煤管轴线的流动内部区域的外部区域。 在混合区之前，存在用于减缓外部区域相对于内部区域中的流动的流动的装置（12）。 为了实现良好的混合，促进NOx还原，外区煤浓度高于内区煤浓度。 减速装置（12）可以是径向向内突出的挡板。

    A combustion burner of fine coal powder, and a combustion apparatus of fine coal powder
    4.
    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
    5.
    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。

    Pulverized coal combustion burner
    6.
    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。

    Pulverized coal burner and method of using same
    7.
    发明公开
    Pulverized coal burner and method of using same 失效
    煤粉燃烧器和应用程序的方法

    公开(公告)号：EP0690264A3

    公开(公告)日：1997-01-29

    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.

    Burner apparatus for pulverized coal
    9.
    发明公开
    Burner apparatus for pulverized coal 失效
    BrennerfürKohlenstaub。

    公开(公告)号：EP0409102A2

    公开(公告)日：1991-01-23

    申请号：EP90113436.1

    申请日：1990-07-13

    申请人： BABCOCK-HITACHI KABUSHIKI KAISHA

    发明人： Okiura, Kunio ,  Baba, Akira ,  Oyatsu, Noriyuki ,  Kaku, Hiroyuki ,  Morita, Shigeki ,  Kobayashi, Hironobu

    IPC分类号： F23D1/00

    CPC分类号： F23D1/00 ,  F23D2207/00

    摘要： A burner comprises a pulverized coal supply pipe (73), a starter oil burner (71) extending within the pulverized coal supply pipe (73) to define therebetween a tubular passage through which a mixture of combustion air and pulverized coal passes into a furnace (11), a flame holder provided at an outer periphery of one end of the pulverized coal supply pipe (73) facing to the furnace (11), a cylindrical member (74) disposed in the tubular passage for dividing a part thereof into two coaxial passage parts (731,732), and a valve (75) adapted to close an axial end opening of the cylindrical member for varying a concentration of pulverized coal in a radial outer passage part (731) of the coaxial passage parts.

    摘要翻译： 燃烧器包括粉煤供给管（73），在粉煤供给管（73）内延伸的起动油燃烧器（71），以在其间限定燃烧空气和粉煤的混合物通过其的炉管 11），设置在面向炉（11）的煤粉供给管（73）的一端的外周的火焰保持器，设置在管状通路中的圆筒部件（74），将其一部分分割为两个同轴 通道部分（731,732）和适于闭合圆柱形构件的轴向端部开口的阀（75），用于改变同轴通道部分的径向外部通道部分（731）中的粉煤浓度。