公开(公告)号：US5349812A

公开(公告)日：1994-09-27

申请号：US10576

申请日：1993-01-28

申请人： Masayuki Taniguchi ,  Hironobu Kobayashi ,  Kiyoshi Narato ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Michio Kuroda ,  Noriyuki Hayashi

发明人： Masayuki Taniguchi ,  Hironobu Kobayashi ,  Kiyoshi Narato ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Michio Kuroda ,  Noriyuki Hayashi

IPC分类号： F23R3/26 ,  F23R3/28 ,  F02C9/50

CPC分类号： F23R3/26

摘要： A gas turbine combustor is capable of reducing NOx over a whole load range of a gas turbine. The combustor comprises two burner systems. It is possible to independently control a flow rate of combustion air supplied to a burner of the respective systems and a flow rate of bypass air jetted from through a bypass air port. The air supplied to the burners is mixed with fuel in a mixing chamber and then ejected into a combustion chamber so as to form a flame. The amount of bypass air is controlled in accordance with an operation load, a humidity of air and a heating value of fuel. It is therefore possible to prevent any blow off and reduce NOx over the whole load range of the gas turbine.

摘要翻译： 燃气轮机燃烧器能够在燃气轮机的整个负载范围内减少NOx。 燃烧器包括两个燃烧器系统。 可以独立地控制供给到各个系统的燃烧器的燃烧空气的流量和从旁通空气口喷射的旁路空气的流量。 供给燃烧器的空气与混合室中的燃料混合，然后喷射到燃烧室中以形成火焰。 旁路空气的量根据操作负荷，空气湿度和燃料的热值来控制。 因此，可以防止在燃气轮机的整个负载范围内的任何吹出和减少NOx。

公开(公告)号：US5022849A

公开(公告)日：1991-06-11

申请号：US379926

申请日：1989-07-14

申请人： Yasuo Yoshii ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Tooru Inada ,  Hideo Kikuchi ,  Masayuki Taniguchi ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Tadayoshi Murakami ,  Michio Kuroda ,  Yoji Ishibashi ,  Stephen M. Masutani

发明人： Yasuo Yoshii ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Tooru Inada ,  Hideo Kikuchi ,  Masayuki Taniguchi ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Tadayoshi Murakami ,  Michio Kuroda ,  Yoji Ishibashi ,  Stephen M. Masutani

IPC分类号： F23C5/00 ,  F23C6/04 ,  F23C7/00 ,  F23C13/00 ,  F23D14/02

CPC分类号： F23C13/00 ,  F23C5/00 ,  F23C6/047 ,  F23C7/00 ,  F23D14/02 ,  F23C2900/05081

摘要： A low NOx burning method and apparatus wherein a low air ratio flame burned with an amount of air less than an amount of air in a theoretical air ratio required for burning fuel perfectly is formed, and combustibles discharged from the low air ratio flame are burned at a trailing stream of the low air ratio flame while supplying air. The low air ratio flame is a premixing flame burned by premixing the fuel and air, and combustion of the premixing flames is maintained in the vicinity of the premixing flame. In this way, the generation of the NOx during the burning can be greatly decreased, and the required apparatus can be small-sized.

摘要翻译： 形成低NOx燃烧方法和装置，其中形成低空燃比火焰燃烧的空气量少于燃烧燃料所需的理论空气比的空气量，并且从低空燃比火焰排出的可燃物燃烧在 在供应空气的同时，低空气比火焰的尾流。 低空气比火焰是通过预混合燃料和空气燃烧的预混合火焰，并且预混合火焰的燃烧保持在预混合火焰附近。 以这种方式，可以大大降低燃烧期间的NOx的产生，并且所需的装置可以小型化。

公开(公告)号：US5328355A

公开(公告)日：1994-07-12

申请号：US765835

申请日：1991-09-26

申请人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Masayuki Taniguchi ,  Tadayoshi Murakami ,  Kiyoshi Narato ,  Michio Kuroda ,  Satoshi Tsukahara

发明人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Masayuki Taniguchi ,  Tadayoshi Murakami ,  Kiyoshi Narato ,  Michio Kuroda ,  Satoshi Tsukahara

IPC分类号： C08F259/04 ,  C08F259/00 ,  F23C7/02 ,  F23C9/00 ,  F23D11/10 ,  F23D23/00 ,  F23K5/20 ,  F23R3/16 ,  F23D11/40 ,  F23D11/44

CPC分类号： F23K5/20 ,  F23C7/02 ,  F23C9/006 ,  F23D11/107 ,  F23D23/00 ,  F23R3/16 ,  F23D2900/11101

摘要： In a combustor including a premixing type combustion burner which has an atomizer for ejecting a liquid fuel together with combustion air to atomize the liquid fuel, the atomizer is comprised of an inner shell to an inner peripheral surface of which the liquid fuel is supplied, an outer shell defining a passage for the combustion air running substantially straightly between the outer shell itself and an outer peripheral surface of the inner shell, and a swirling-flow guide plate for swirling the combustion air passed into the inner shell, while directing it in a downstream direction. The combustor further includes a resistor abruptly decreased in sectional area downstream and provided substantially downstream of the center of the swirling flow and in the vicinity of an outlet of the premixing type combustion burner for providing a resistance to a premixture ejected from the premixing type combustion burner.

摘要翻译： 在包括预混合型燃烧器的燃烧器中，其具有用于与燃烧空气一起喷射液体燃料以雾化液体燃料的雾化器，雾化器包括内壳，其内部表面供应液体燃料， 外壳限定用于在外壳本身与内壳的外周表面之间大致直线运行的燃烧空气的通道，以及用于旋转流入内壳的燃烧空气的旋流引导板，同时将其引导到 下游方向。 燃烧器还包括一个电阻器，其下游的截面积突然减小，并且基本上设置在旋流中心的下游，并且在预混合型燃烧器的出口附近，用于提供对从预混合型燃烧器喷出的预混合物的阻力 。

公开(公告)号：US5067419A

公开(公告)日：1991-11-26

申请号：US456561

申请日：1989-12-26

申请人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Kenichi Sohma ,  Yasuo Yoshii ,  Norio Arashi ,  Shigekazu Nishimoto ,  Isao Koyama ,  Tooru Inata ,  Hideo Kikuchi ,  Tadayoshi Murakami ,  Masayuki Taniguchi ,  Hiroshi Miyadera ,  Fumio Koda ,  Tatsuzou Enomoto ,  Kenshi Kobayashi

发明人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Kenichi Sohma ,  Yasuo Yoshii ,  Norio Arashi ,  Shigekazu Nishimoto ,  Isao Koyama ,  Tooru Inata ,  Hideo Kikuchi ,  Tadayoshi Murakami ,  Masayuki Taniguchi ,  Hiroshi Miyadera ,  Fumio Koda ,  Tatsuzou Enomoto ,  Kenshi Kobayashi

IPC分类号： F22B21/34 ,  F22B31/00 ,  F23D23/00

CPC分类号： F23D23/00 ,  F22B21/346 ,  F22B31/00

摘要： A low-NOx boiler comprises a burner for burning gaseous fuel, heat transfer pipes heating water by combustion heat of the burner to generate steam and having a passage through which water flows, a steam drum communicating with the heat transfer pipe and accumulating the steam from the heat transfer pipe, and an exhaust gas duct located in the furnace to exhaust combustion gas generated by combustion of gaseous fuel outside of the boiler. The boiler further comprises unburnt gas burner in the exhaust gas duct for burning unburnt content in the combustion gas flowing in the duct. The unburnt gas burner includes a nozzle for injecting premixture flow of fuel and combustion air and flame holding plate located near the downstream side of the outlet of the nozzle to interrupt the premixture flow to form a circulating flow on downstream side of the flame holding plate. As gaseous fuel and air are mixed in advance and a flame is formed, the flame length can be shortened. Furthermore, the flame holding plate enables to reduce NOx generated. Unburnt gas burner provided in the exhaust gas duct makes it possible to notably reduce the concentration of NOx discharged to the outside of the system.

公开(公告)号：US5325660A

公开(公告)日：1994-07-05

申请号：US027982

申请日：1993-03-08

申请人： Masayuki Taniguchi ,  Yasuo Yoshii ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Michio Kuroda ,  Hironobu Kobayashi

发明人： Masayuki Taniguchi ,  Yasuo Yoshii ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Michio Kuroda ,  Hironobu Kobayashi

IPC分类号： F23R3/26 ,  F01K23/10 ,  F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23D14/70 ,  F23R3/02 ,  F23R3/18 ,  F23R3/30 ,  F23R3/34 ,  F02C7/26

CPC分类号： F23C9/006 ,  F01K23/10 ,  F23C6/047 ,  F23C7/00 ,  F23D14/70 ,  F23R3/02 ,  F23R3/346 ,  F23C2202/40 ,  F23D2209/20

摘要： Method of burning a premixed gas and a combustor for practicing the method. A jet of the premixed gas is burnt from an inside to an outside of the jet to form a premix flame. A burned gas is mixed into the premixed gas from the outside of the jet. The burned gas is produced when premixed gas is burned.

摘要翻译： 燃烧预混合气体和燃烧器的方法。 预混合气体的射流从射流的内部燃烧到外部，形成预混火焰。 将燃烧的气体从喷射器的外部混入预混气体中。 燃烧的气体是在预混气体燃烧时产生的。

公开(公告)号：US5216885A

公开(公告)日：1993-06-08

申请号：US495907

申请日：1990-03-20

申请人： Masayuki Taniguchi ,  Yasuo Yoshii ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Michio Kuroda ,  Hironobu Kobayashi ,  Yoji Ishibashi

发明人： Masayuki Taniguchi ,  Yasuo Yoshii ,  Tadayoshi Murakami ,  Shigeru Azuhata ,  Norio Arashi ,  Kenichi Sohma ,  Michio Kuroda ,  Hironobu Kobayashi ,  Yoji Ishibashi

IPC分类号： F23R3/26 ,  F01K23/10 ,  F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23D14/70 ,  F23R3/02 ,  F23R3/18 ,  F23R3/30 ,  F23R3/34

CPC分类号： F23C9/006 ,  F01K23/10 ,  F23C6/047 ,  F23C7/00 ,  F23D14/70 ,  F23R3/02 ,  F23R3/346 ,  F23C2202/40 ,  F23D2209/20

摘要： Method of burning a premixed gas and a combustor for practicing the method. A jet of the premixed gas is burnt from an inside to an outside of the jet to form a premix flame. A burned gas is mixed into the premixed gas from the outside of the jet. The burned gas is produced when premixed gas is burned.

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：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：US5343693A

公开(公告)日：1994-09-06

申请号：US947828

申请日：1992-09-21

申请人： Yasutaka Komatsu ,  Michio Kuroda ,  Yasuhiko Ootawara ,  Nobuyuki Iizuka ,  Isao Sato ,  Masayuki Taniguchi ,  Noriyuki Hayashi

发明人： Yasutaka Komatsu ,  Michio Kuroda ,  Yasuhiko Ootawara ,  Nobuyuki Iizuka ,  Isao Sato ,  Masayuki Taniguchi ,  Noriyuki Hayashi

IPC分类号： F23D14/70 ,  F23R3/22 ,  F23R3/26 ,  F23R3/28 ,  F23R3/32 ,  F23C3/00

CPC分类号： F23R3/26 ,  F23D14/70 ,  F23R3/22 ,  F23D2209/20

摘要： A combustor comprises a passage area changing mechanism which relatively moves a flame holder relative to a premixed combustion nozzle in an axial direction so that the area of passage for premixed gas between an injection edge of the premixed combustion nozzle and a peripheral edge of the flame holder can be changed. Stable combustion can be maintained over a wide load range and reduction in NOx can be achieved.

摘要翻译： 燃烧器包括通道区域改变机构，该通道区域改变机构使火焰保持器相对于预混合燃烧喷嘴沿轴向方向相对移动，使得预混合燃烧喷嘴的注射边缘与火焰保持器的周边边缘之间的预混合气体的通道面积 可以改变 可以在宽的负载范围内保持稳定的燃烧，并且可以实现NOx的还原。

公开(公告)号：US5319936A

公开(公告)日：1994-06-14

申请号：US948225

申请日：1992-09-21

申请人： Hiraku Ikeda ,  Michio Kuroda ,  Nobuyuki Iizuka ,  Yasutaka Komatsu ,  Isao Sato ,  Masayuki Taniguchi ,  Yasuhiko Ootawara ,  Noriyuki Hayashi

发明人： Hiraku Ikeda ,  Michio Kuroda ,  Nobuyuki Iizuka ,  Yasutaka Komatsu ,  Isao Sato ,  Masayuki Taniguchi ,  Yasuhiko Ootawara ,  Noriyuki Hayashi

IPC分类号： F23R3/18 ,  F23D23/00 ,  F23R3/28 ,  F23R3/32 ,  F23R3/34 ,  F23R3/20

CPC分类号： F23R3/286 ,  F23D23/00 ,  F23R3/34

摘要： First and second premixed burners having annular injection slots are concentrically adjacent and the injection slots are substantially aligned with each other in a longitudinal direction of the burners. A pilot burner is provided substantially in the center of the annular first premixed burner so that the injection slot of the pilot burner is substantially aligned with the injection slot of the first premixed burner in a longitudinal direction of the burner. A flame holder which forms a circulating flow of combusted gas Gh downstream of the flame holder is disposed at the downstream end of a boundary wall between the premixed burners so that the flame holder is co-used by the premixed burners. Flow rate adjusting means for adjusting the flow rate of fuel supplied to the first, second premixed burner and the pilot burner, respectively are provided. The fuel can be substantially uniformly mixed with a combustion gas. Reduction in NOx and stabilization of premixed flame can be achieved.

摘要翻译： 具有环形注入槽的第一和第二预混合燃烧器同心地相邻并且喷射槽在燃烧器的纵向方向上彼此基本对齐。 主要燃烧器基本上设置在环形第一预混合燃烧器的中心，使得引燃燃烧器的喷射槽在燃烧器的纵向方向上基本上与第一预混燃烧器的喷射槽对准。 形成火焰保持器下游的燃烧气体Gh的循环流的火焰保持器设置在预混合燃烧器之间的边界壁的下游端，使得火焰保持器由预混燃烧器共同使用。 提供了用于分别调节供应到第一，第二预混合燃烧器和引燃燃烧器的燃料的流量的流量调节装置。 燃料可以与燃烧气体基本均匀地混合。 可以实现NOx的还原和预混火焰的稳定化。