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48 条记录 (耗时 0.028 秒)

    Solid fuel burner, burning method using the same, combustion apparatus and method of operating the combustion apparatus
    41.
    发明授权
    Solid fuel burner, burning method using the same, combustion apparatus and method of operating the combustion apparatus 有权
    固体燃料燃烧器，使用其的燃烧方法，燃烧装置和操作燃烧装置的方法

    公开(公告)号：US07665408B2

    公开(公告)日：2010-02-23

    申请号：US11633489

    申请日：2006-12-05

    申请人： Hirofumi Okazaki ,  Masayuki Taniguchi ,  Toshikazu Tsumura ,  Yoshitaka Takahashi ,  Kouji Kuramashi

    发明人： Hirofumi Okazaki ,  Masayuki Taniguchi ,  Toshikazu Tsumura ,  Yoshitaka Takahashi ,  Kouji Kuramashi

    IPC分类号： F23D1/00

    CPC分类号： F23C6/045 ,  F23C7/004 ,  F23C7/008 ,  F23C2201/20 ,  F23C2900/06041 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2209/20

    摘要： A solid fuel burner using a low oxygen concentration gas as a transporting gas of a low grade solid fuel such as brown coal or the like and a combustion method using the solid fuel burner are provided. The solid fuel burner comprises a means for accelerating ignition of the fuel and a means for preventing slugging caused by combustion ash from occurring. Mixing of fuel and air inside a fuel nozzle 11 is accelerated by that an additional air nozzle 12 and a separator 35 for separating a flow passage are arranged in the fuel nozzle 11, and the exit of the additional air nozzle 12 is set at a position so as to overlap with the separator 35 when seeing from a direction perpendicular to a burner axis, and additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle 11. An amount of air from the additional air nozzle 12 is varied corresponding to a combustion load. By increasing the amount of air from the additional air nozzle 12 at a low load operation, an oxygen concentration of a circulation flow 19 formed in a downstream portion outside the exit of the fuel nozzle 11 is increased to stably burn the fuel. By decreasing the amount of air from the additional air nozzle 12 at a high load operation, a flame is formed at a position distant from the fuel nozzle 11 to suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.

    摘要翻译： 提供了使用低氧浓度气体作为低等固体燃料如褐煤等的输送气体的固体燃料燃烧器和使用固体燃料燃烧器的燃烧方法。 固体燃料燃烧器包括用于加速燃料点火的装置和用于防止由燃烧灰发生的堵塞的装置。 燃料喷嘴11内的燃料和空气的混合通过在燃料喷嘴11中设置有附加的空气喷嘴12和用于分离流路的分离器35而加速，并且附加空气喷嘴12的出口被设定在位置 以便当从垂直于燃烧器轴线的方向观察时与分离器35重叠，并且附加空气沿与流过燃料喷嘴11的燃料射流的流动方向几乎垂直的方向喷射。来自 额外的空气喷嘴12对应于燃烧负荷而变化。 通过在低负载运转下增加来自附加空气喷嘴12的空气量，形成在燃料喷嘴11的出口外的下游部分的循环流19的氧浓度增加，以稳定地燃烧燃料。 通过在高负荷运转下减少来自附加空气喷嘴12的空气量，在远离燃料喷嘴11的位置处形成火焰，以抑制由固体燃料燃烧器的结构和炉壁接收的辐射热。

    Exhaust aftertreatment system using urea water
    43.
    发明申请
    Exhaust aftertreatment system using urea water 审中-公开
    排尿后处理系统采用尿素水

    公开(公告)号：US20070036694A1

    公开(公告)日：2007-02-15

    申请号：US11493568

    申请日：2006-07-27

    申请人： Akira Nishioka ,  Kiyoshi Amou ,  Yoshihiro Sukegawa ,  Takehiko Kowatari ,  Yasunaga Hamada ,  Ikuhisa Hamada ,  Toshifumi Mukai ,  Yoshinori Taguchi ,  Hiroshi Yokota

    发明人： Akira Nishioka ,  Kiyoshi Amou ,  Yoshihiro Sukegawa ,  Takehiko Kowatari ,  Yasunaga Hamada ,  Ikuhisa Hamada ,  Toshifumi Mukai ,  Yoshinori Taguchi ,  Hiroshi Yokota

    IPC分类号： B01D53/34 ,  B01D50/00

    CPC分类号： F01N3/2066 ,  B01D53/90 ,  B01D53/9431 ,  B01D2251/2067 ,  B01F3/04049 ,  B01F5/0268 ,  B01F5/0473 ,  F01N3/035 ,  F01N3/106 ,  F01N3/108 ,  F01N3/2053 ,  F01N13/0097 ,  F01N2240/20 ,  F01N2240/40 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/102 ,  F01N2610/1453 ,  Y02A50/2344 ,  Y02T10/24

    摘要： An exhaust aftertreatment system comprises an injector for injecting urea water into an exhaust duct, and a denitration catalyst disposed downstream of the injector with respect to a flow of exhaust gas. The exhaust aftertreatment system reduces nitrogen oxides in the exhaust gas by the denitration catalyst while using ammonia produced from the urea water injected from the injector. The urea water is injected along a direction of the flow of the exhaust gas within the exhaust duct, and a porous plate is disposed in multiple stages in a space of the exhaust duct such that droplets of the injected urea water impinge against the porous plate before reaching a wall surface of the exhaust duct. A surface of the porous plate subjected to the impingement of the droplets is arranged to face downstream with respect to the flow of the exhaust gas. Deposition of the urea water is prevented by causing film boiling when the droplets impinge against the porous plate, and the urea water reflected by the porous plate is uniformly dispersed into the exhaust gas. Thus, the urea water is uniformly dispersed into the exhaust gas without increasing a pressure loss of the exhaust gas. The urea water is prevented from depositing on the wall surface and producing a precipitate in the form of a solid.

    摘要翻译： 排气后处理系统包括用于将尿素水喷射到排气管道中的喷射器，以及设置在喷射器相对于废气流的下游的脱硝催化剂。 排气后处理系统使用由喷射器注入的尿素水产生的氨，还原脱硝催化剂，还原废气中的氮氧化物。 尿素水沿着排气管道内的废气流动的方向喷射，多孔板在排气管道的空间内以多级设置，使得喷射的尿素水的液滴在 到达排气管的壁面。 受到液滴撞击的多孔板的表面被布置成面向排气相对的下游。 当液滴撞击多孔板时，通过使膜沸腾来防止尿素水的沉积，由多孔板反射的尿素水均匀地分散在废气中。 因此，尿素水均匀地分散在排气中，而不会增加排气的压力损失。 防止尿素水沉积在壁表面上并产生固体形式的沉淀。