公开(公告)号：US5806443A

公开(公告)日：1998-09-15

申请号：US462292

申请日：1995-06-05

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

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

IPC分类号： F23C99/00 ,  F23C7/00 ,  F23D1/00 ,  F23D1/02 ,  F23D17/00 ,  F23C1/12

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 and a tertiary air nozzle concentrically positioned about the outer periphery of a fuel nozzle carrying a pulverized coal with a primary air, and two swirling flow generators are included at least one of these nozzles with a positional relation parallel to a flow of air. One of the swirling flow of the two swirling flow generators can be set strongly. And, under a condition of low air flow rate, air can be supplied from one swirling flow generator 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. Also, because the swirling strength at the time of 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和三次空气喷嘴，该二次空气喷嘴和三次空气喷嘴同轴地位于燃料喷嘴的外周，该燃料喷嘴承载有粉煤 一次空气和两个旋流产生器包括具有与空气流平行的位置关系的这些喷嘴中的至少一个。 两个回旋流发生器的旋流之一可以强烈地设定。 并且，在空气流量低的条件下，可以单独从一个旋流发生器供给空气。 由于能够提高燃烧空气的旋转强度，所以可以降低由粉煤燃烧产生的NOx的浓度。 此外，由于可以提高低负荷时的旋转强度，所以可以通过保持粉煤火焰稳定而降低NOx浓度。

公开(公告)号：US5685242A

公开(公告)日：1997-11-11

申请号：US406029

申请日：1995-03-17

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

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

IPC分类号： F23C6/04 ,  F23C9/00 ,  F23C99/00 ,  F23D1/00 ,  F23K3/02 ,  F23C1/10

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

摘要： A pulverized coal combustion burner includes a pulverized coal nozzle, and secondary and tertiary air nozzles provided in concentric relation to the pulverized coal nozzle. A flame stabilizing ring is provided at an outlet end of the pulverized coal nozzle. A separation wall 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，和与粉煤喷嘴同心的二次和三次空气喷嘴。 在煤粉喷嘴的出口端设有火焰稳定环。 在粉煤喷嘴内设置分隔壁，以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，粉煤的可点燃性和燃烧速度提高，从而减少NOx的排放量。

公开(公告)号：US06715432B2

公开(公告)日：2004-04-06

申请号：US10101795

申请日：2002-03-19

申请人： Toshikazu Tsumura ,  Hirofumi Okazaki ,  Miki Shimogori ,  Kenji Kiyama ,  Kouji Kuramashi ,  Hitoshi Kikuchi ,  Yoshitaka Takahashi ,  Shigeki Morita ,  Kazuhito Sakai ,  Masayuki Taniguchi ,  Hironobu Kobayashi

发明人： Toshikazu Tsumura ,  Hirofumi Okazaki ,  Miki Shimogori ,  Kenji Kiyama ,  Kouji Kuramashi ,  Hitoshi Kikuchi ,  Yoshitaka Takahashi ,  Shigeki Morita ,  Kazuhito Sakai ,  Masayuki Taniguchi ,  Hironobu Kobayashi

IPC分类号： F23D100

CPC分类号： F23C6/045 ,  F23C5/32 ,  F23C7/004 ,  F23C7/008 ,  F23C2201/101 ,  F23D1/00 ,  F23D2201/20 ,  F23D2208/10 ,  F23D2209/20 ,  F23L15/00 ,  Y02E20/348

摘要： According to a burner of the present invention, a stable combustion is obtained in a wide range from a high-load operation condition to a low-load operation condition even in the case of low quality solid fuel such as brown coal. The amount of air supplied from additional air holes or additional air nozzles 12 can be adjusted depending on the combustion load of furnace 41. At a low load, the amount of air supplied from additional air holes or additional air nozzles 12 is increased, whereby the oxygen concentration in a recirculation zones 19 formed downstream of the outside of a fuel nozzle 11 exit, permits a stable combustion. At a high load, the amount of air supplied from additional air holes or additional air nozzles 12 is reduced, whereby a flame is formed in a position far from the fuel nozzle 11. This suppresses thermal radiation onto a solid fuel burner 42 structure and a furnace 41 wall. The solid fuel burner 42 is applicable to combustion using low-quality solid fuel such as brown coal and exhaust gas as the carrier gas.

摘要翻译： 根据本发明的燃烧器，即使在低质量的固体燃料（例如褐煤）的情况下，也能从高负载运行状态到低负载运行状态的宽范围内获得稳定的燃烧。空气量 可以根据炉41的燃烧负荷来调节从附加的空气孔供给的附加的空气喷嘴12或附加的空气喷嘴12.在低负载下，从附加的空气孔或附加的空气喷嘴12供应的空气量增加， 形成在燃料喷嘴11外侧的下游的再循环区域19可以稳定地燃烧。 在高负载下，从附加空气孔或附加空气喷嘴12供应的空气量减少，从而在远离燃料喷嘴11的位置形成火焰。这抑制了对固体燃料燃烧器42结构的热辐射和 炉41墙。 固体燃料燃烧器42适用于使用诸如褐煤和废气的低质量固体燃料作为载气的燃烧。

公开(公告)号：US6112676A

公开(公告)日：2000-09-05

申请号：US115736

申请日：1998-07-15

申请人： Hirofumi Okazaki ,  Hironobu Kobayashi ,  Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Kouji Kuramashi ,  Shigeki Morita ,  Shin-ichiro Nomura ,  Miki Shimogori

发明人： Hirofumi Okazaki ,  Hironobu Kobayashi ,  Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Kouji Kuramashi ,  Shigeki Morita ,  Shin-ichiro Nomura ,  Miki Shimogori

IPC分类号： F23C99/00 ,  F23D1/00 ,  F23D1/02 ,  F23C1/12

CPC分类号： F23D1/00 ,  F23C2202/40 ,  F23C2900/09002

摘要： A pulverized coal burner includes a pulverized coal nozzle for jetting a mixture of pulverized coal and primary air, a secondary air nozzle and a tertiary air nozzle, concentrically arranged around the outer periphery of the pulverized coal nozzle, and a tube expanded portion at the end of a partition wall separating two adjacent air nozzles. A flow shift means such as a guide plate for shifting the secondary air in the secondary air nozzle so as to flow along the tube expanded portion is provided. The secondary air is jetted outwardly by the guide plate, and mixing of the secondary air and the tertiary air with pulverized coals is delayed, whereby an amount of NOx is decreased.

摘要翻译： 粉煤燃烧器包括用于喷射粉煤和一次空气的混合物的粉煤喷嘴，二次空气喷嘴和三次空气喷嘴，同心地布置在粉煤喷嘴的外周周围，并且在末端的管膨胀部分 分隔两个相邻的空气喷嘴的分隔壁。 提供了诸如用于使二次空气喷嘴中的二次空气沿管扩张部分流动的引导板的流动移动装置。 二次空气被引导板向外喷射，二次空气和三次空气与粉煤混合延迟，从而NOx的量减少。

公开(公告)号：US06237510B1

公开(公告)日：2001-05-29

申请号：US09043425

申请日：1998-03-19

申请人： Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Shigeki Morita ,  Koji Kuramashi ,  Kunio Okiura ,  Shinichiro Nomura ,  Miki Mori ,  Noriyuki Ohyatsu ,  Noboru Takarayama ,  Toshihiko Mine ,  Hironobu Kobayashi ,  Hirofumi Okazaki

发明人： Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Shigeki Morita ,  Koji Kuramashi ,  Kunio Okiura ,  Shinichiro Nomura ,  Miki Mori ,  Noriyuki Ohyatsu ,  Noboru Takarayama ,  Toshihiko Mine ,  Hironobu Kobayashi ,  Hirofumi Okazaki

IPC分类号： F23C110

CPC分类号： F23D1/00 ,  F23C2201/20 ,  F23C2202/40 ,  F23C2900/09002 ,  F23D2201/20 ,  F23D2209/20 ,  F23K2201/103

摘要： A combustion burner includes a mixture nozzle (2) defining a mixture fluid passage through which a mixture fluid (1) containing pulverized coal and conveyor gas flows toward a furnace, secondary and tertiary air passages surrounding the mixture nozzle (2), through which secondary air (6) and tertiary air (9) for combustion purposes flow, respectively; and air injection nozzles (24) provided in the vicinity of an outer periphery of a distal end of the mixture nozzle (2). The air (21) is injected from the air injection nozzles (24) toward the axis of the mixture nozzle, so that the high-temperature gas in the vicinity of the outer periphery of the distal end of the mixture nozzle (2) is drawn into the mixture fluid (1) in the vicinity of the outer periphery of this distal end.

摘要翻译： 燃烧器包括限定混合流体通道的混合喷嘴（2），含有粉煤和输送气体的混合流体（1）通过该混合流体通道流向炉子，二次和三次空气通道围绕混合物喷嘴（2），二次 空气（6）和三次空气（9）分别用于燃烧目的流动; 以及设置在混合喷嘴（2）的前端的外周附近的空气喷射喷嘴（24）。 空气（21）从空气注入喷嘴（24）朝向混合喷嘴的轴线注入，使得混合喷嘴（2）的远端外周附近的高温气体被拉出 在该远端的外周附近的混合流体（1）中。

公开(公告)号：US06298796B1

公开(公告)日：2001-10-09

申请号：US09515713

申请日：2000-03-01

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

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

IPC分类号： F23B700

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 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 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： 一种用于燃烧粉煤的燃烧器，包括：用于喷射煤粉和空气的混合物的细煤粉喷嘴10; 以及用于喷射空气的空气喷嘴11,12，其中从空气喷嘴供给足够量的用于粉煤粉完全燃烧的空气; 在高温下通过在燃烧器出口附近快速点燃细粉煤而在高温下形成火焰而快速消耗氧而形成高温还原火焰; 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气体组成在燃烧器的中心轴线上的径向均匀分布的氧化火焰。

公开(公告)号：US06189464B1

公开(公告)日：2001-02-20

申请号：US09238161

申请日：1999-01-28

申请人： Hirofumi Okazaki ,  Hironobu Kobayashi ,  Toshikazu Tsumura ,  Kenji Kiyama ,  Tadashi Jimbo ,  Kouji Kuramashi ,  Shigeki Morita ,  Shinichiro Nomura ,  Miki Shimogori

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

IPC分类号： F23B700

CPC分类号： F23C7/02 ,  F23C6/045 ,  F23C2201/101 ,  F23D1/00

摘要： A combustion method utilizing a pulverized coal combustion burner which is provided with a pulverized coal nozzle for jetting a fluid mixture of pulverized coal and air and an air nozzle for jetting air. In the method, a combustion flame formed by the pulverized coal combustion burner forms a first zone of a gas phase air ratio of one or less at a radially central portion of the flame and a second zone of a gas phase air ratio of more than one outside of the first zone adjacent the coal nozzle, and a third zone of a gas phase air ratio of one or less at a downstream side from said first and second zones.

摘要翻译： 一种利用粉煤燃烧器的燃烧方法，其具有用于喷射粉煤和空气的流体混合物的粉煤喷嘴和用于喷射空气的空气喷嘴。 在该方法中，由粉煤燃烧器形成的燃烧火焰在火焰的径向中心部分处形成一个或多个气相空气比率的第一区域，并且气相空气比的第二区域多于一个 在与煤喷嘴相邻的第一区域外部，以及与所述第一和第二区域的下游侧的气相空气比为一个或更小的第三区域。

公开(公告)号：US20060115780A1

公开(公告)日：2006-06-01

申请号：US10538524

申请日：2003-08-27

申请人： Kenji Kiyama ,  Shigeki Morita ,  Osamu Okada ,  Koji Kuramashi ,  Takanori Yano ,  Keichi Ochi ,  Akira Baba ,  Miki Shimogori ,  Takeru Fukuchi ,  Hiroshi Yamaguchi ,  Hironobu Kobayashi ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Keni Yamamoto

发明人： Kenji Kiyama ,  Shigeki Morita ,  Osamu Okada ,  Koji Kuramashi ,  Takanori Yano ,  Keichi Ochi ,  Akira Baba ,  Miki Shimogori ,  Takeru Fukuchi ,  Hiroshi Yamaguchi ,  Hironobu Kobayashi ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Keni Yamamoto

IPC分类号： F23M9/00

CPC分类号： F23N5/006 ,  F23C9/08 ,  F23L9/04 ,  F23L15/04 ,  Y02E20/348

摘要： The invention provides a combustion apparatus which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a combustion apparatus provided with a burner burning a fuel within a furnace in a theoretical air ratio or less, and an air port supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region. Further, the invention provides a wind box which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a wind box having an air port arranged in a back flow side of the burner and supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region.

摘要翻译： 本发明提供了即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx生成以便减少未燃烧的可燃物的燃烧装置。 在具有在理论空气比以下的炉内燃烧燃料的燃烧装置和供给燃烧器不足的燃烧用空气的空气口的情况下，设置供给氮氧化物产生抑制气体的供给装置 在混合区域之间或混合区域之间的混合区域。 此外，本发明提供一种风箱，即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx的产生，以期减少未燃烧的可燃物。 在具有布置在燃烧器的后流侧的空气口并且供应燃烧器不足的燃烧空气的风箱中，在两者之间的混合区域中提供用于供应氮氧化物产生抑制气体的供应装置， 在混合区附近。

公开(公告)号：US07922480B2

公开(公告)日：2011-04-12

申请号：US10538524

申请日：2003-08-27

申请人： Kenji Kiyama ,  Shigeki Morita ,  Osamu Okada ,  Koji Kuramashi ,  Takanori Yano ,  Kenichi Ochi ,  Akira Baba ,  Miki Shimogori ,  Takeru Fukuchi ,  Hiroshi Yamaguchi ,  Hironobu Kobayashi ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Kenji Yamamoto

发明人： Kenji Kiyama ,  Shigeki Morita ,  Osamu Okada ,  Koji Kuramashi ,  Takanori Yano ,  Kenichi Ochi ,  Akira Baba ,  Miki Shimogori ,  Takeru Fukuchi ,  Hiroshi Yamaguchi ,  Hironobu Kobayashi ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Kenji Yamamoto

IPC分类号： F23M9/00

CPC分类号： F23N5/006 ,  F23C9/08 ,  F23L9/04 ,  F23L15/04 ,  Y02E20/348

摘要： The invention provides a combustion apparatus which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a combustion apparatus provided with a burner burning a fuel within a furnace in a theoretical air ratio or less, and an air port supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region. Further, the invention provides a wind box which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a wind box having an air port arranged in a back flow side of the burner and supplying a combustion air for a shortfall in the burner, a supply apparatus for supplying a nitrogen oxide generation inhibiting gas is provided in a mixing region between the both or near the mixing region.

摘要翻译： 本发明提供了即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx生成以便减少未燃烧的可燃物的燃烧装置。 在具有在理论空气比以下的炉内燃烧燃料的燃烧装置和供给燃烧器不足的燃烧用空气的空气口的情况下，设置供给氮氧化物产生抑制气体的供给装置 在混合区域之间或混合区域之间的混合区域。 此外，本发明提供一种风箱，即使在促进高温燃烧气体和空气之间的混合的情况下也能够抑制NOx的产生，以期减少未燃烧的可燃物。 在具有布置在燃烧器的后流侧的空气口并且供应燃烧器不足的燃烧空气的风箱中，在两者之间的混合区域中提供用于供应氮氧化物产生抑制气体的供应装置， 在混合区附近。

公开(公告)号：US5231937A

公开(公告)日：1993-08-03

申请号：US663319

申请日：1991-03-01

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

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

IPC分类号： C04B7/44 ,  F23D1/02 ,  F23K1/00

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

摘要： A burner for pulverized coal has a coal duct for pulverized coal and primary combustion air and a secondary combustion air duct 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 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. These are means 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.sub.x reduction, the coal concentration in the outer zone is higher than in the inner zone. The slowing means may be radially inwardly projecting baffles.