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25 条记录 (耗时 0.015 秒)

    A combustion burner of fine coal powder, and a combustion apparatus of fine coal powder
    23.
    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
    25.
    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。