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：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：US4741279A

公开(公告)日：1988-05-03

申请号：US1166

申请日：1987-01-07

申请人： Shigeru Azuhata ,  Kazutoshi Higashiyama ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Norio Arashi ,  Tooru Inada ,  Kenichi Sohma ,  Keizou Ohtsuka ,  Yoshitaka Takahashi ,  Fumio Koda ,  Tadahisa Masai ,  Masakiyo Tanikawa ,  Kei Kawano

发明人： Shigeru Azuhata ,  Kazutoshi Higashiyama ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Norio Arashi ,  Tooru Inada ,  Kenichi Sohma ,  Keizou Ohtsuka ,  Yoshitaka Takahashi ,  Fumio Koda ,  Tadahisa Masai ,  Masakiyo Tanikawa ,  Kei Kawano

IPC分类号： F23C7/00 ,  F23D1/00

CPC分类号： F23D1/005 ,  F23C7/004 ,  F23C2202/40

摘要： A method of combusting a coal-water mixture fuel. The mixture is atomized into a conically-shaped primary pre-combustion chamber. Primary air is supplied, at a rate smaller than that required for complete burning of the mixture and in the form of a swirl about the axis of the jet of the atomized mixture, from the peripheral portion of the primary pre-combustion chamber into a secondary pre-combustion chamber connected to said primary pre-combustion chamber, thus forming a region of low pressure around the jet of the mixture. The region of low pressure serves to induce the atmosphere gas from the secondary pre-combustion chamber of higher temperature back into the primary pre-combustion chamber of a lower temperature, so that the water content of the mixture is evaporated and the mixture is ignited by the heat of the hot atmosphere gas. Then, the mixture is burnt in the secondary pre-combustion chamber in the presence of the remainder portion of the primary air, at a comparatively small air-to-ratio, so that a region of a reducing atmosphere is formed to suppress the generation of NOx. Then, secondary air is supplied, in the form of a swirl about the axis of the jet of the mixture and at a rate sufficient to completely burn the mixture, into the furnace connected to the secondary pre-combustion chamber, thus completely combusting the coal-water mixture.

摘要翻译： 一种燃烧煤 - 水混合燃料的方法。 将混合物雾化成锥形初级预燃烧室。 一次空气以比完全燃烧混合物所需的速度小并且以围绕雾化混合物的射流的轴线的漩涡的形式从初级预燃烧室的周边部分供给到次级 预燃烧室连接到所述初级预燃烧室，从而在混合物的射流周围形成低压区域。 低压区域用于将来自较高温度的次级预燃烧室的气氛气体引回到较低温度的初级预燃烧室中，使得混合物的水分被蒸发并且混合物被点燃 热气氛气体的热量。 然后，在空气比比较小的情况下，在一次空气的剩余部分的存在下，在二次预燃烧室中燃烧混合物，从而形成还原气氛的区域， NOx。 然后，将二次空气以围绕混合物的射流轴线的涡旋的形式以足以完全燃烧混合物的速率供应到连接到二次预燃烧室的炉中，从而完全燃烧煤 - 水混合物。

公开(公告)号：US5339635A

公开(公告)日：1994-08-23

申请号：US918799

申请日：1992-07-27

申请人： Yasuo Iwai ,  Shigeru Azuhata ,  Kenichi Sohma ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Tooru Inada ,  Tadayoshi Murakami ,  Norio Arashi ,  Yoji Ishibashi ,  Michio Kuroda

发明人： Yasuo Iwai ,  Shigeru Azuhata ,  Kenichi Sohma ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Tooru Inada ,  Tadayoshi Murakami ,  Norio Arashi ,  Yoji Ishibashi ,  Michio Kuroda

IPC分类号： F23D14/26 ,  F23D23/00 ,  F23R3/28 ,  F23R3/34

CPC分类号： F23D23/00 ,  F23D14/26 ,  F23R3/286 ,  F23R2900/03282

摘要： A gas turbine combustor of the pre-mixed combustion system in which the pre-mixed fuel and the air are combusted. The gas turbine combustor comprises main cylindrical nozzles provided in the end wall on the upstream side of a cylindrical combustion chamber, auxiliary nozzles formed to surround the main nozzles, a main pre-mixed gas supply for supplying a pre-mixed gas to the main nozzles, and an auxiliary pre-mixed gas supply for supplying a pre-mixed gas having an fuel/air ratio smaller than that of the main pre-mixed gas to the auxiliary nozzles, and wherein it is allowed to stably burn a lean pre-mixed gas having an fuel/air ratio of greater than 1 from a low-load condition through and up to a high-load condition of the gas turbine.

摘要翻译： 预混合燃料系统的燃气轮机燃烧器，其中预混合燃料和空气燃烧。 燃气轮机燃烧器包括设置在圆筒形燃烧室上游侧的端壁中的主圆柱形喷嘴，形成为围绕主喷嘴的辅助喷嘴，用于向主喷嘴供应预混合气体的主预混合气体供应 以及辅助预混合气体供应源，用于将具有比主预混合气体的燃料/空气比小于预混合气体的预混合气体供应到辅助喷嘴，并且其中允许稳定地燃烧稀混合 从低负荷状态通过燃气轮机的高负荷状态的燃料/空气比大于1的气体。

公开(公告)号：US4973159A

公开(公告)日：1990-11-27

申请号：US289042

申请日：1988-12-23

申请人： Kenichi Sohma ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Hironobu Kobayashi ,  Norio Arashi ,  Hiroshi Miyadera

发明人： Kenichi Sohma ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Hironobu Kobayashi ,  Norio Arashi ,  Hiroshi Miyadera

IPC分类号： G01J3/18 ,  G01J3/28 ,  G01J3/443 ,  G01N21/72 ,  G01N21/75 ,  G01N21/76

CPC分类号： G01J3/2823 ,  G01J3/443 ,  G01N21/75 ,  G01J2003/2826 ,  G01J2003/283 ,  G01J3/1809 ,  G01N2021/6406 ,  G01N2021/725 ,  G01N21/72 ,  G01N21/76

摘要： A spectroscope apparatus includes a device for separating light from an object to be measured into spectral components, a device for mixing spectral components which exists in a desired wavelength range, and a device for forming an image of the to-be-measured body of mixed light. The image obtained is very useful for observing the state of a combustion flame, the progress a photochemical reaction, the progress of a biochemical reaction, tissue in a cell, and the state of a flame for analyzing a solution which contains a metal ion by flame spectrophotometry. The apparatus provides accurate analytical information and makes possible precise control operations.

公开(公告)号：US5038558A

公开(公告)日：1991-08-13

申请号：US292345

申请日：1988-12-30

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

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

IPC分类号： F23R3/12 ,  F23R3/30 ,  F23R3/34

CPC分类号： F23R3/34

摘要： A gas turbine combustor comprises a combustion chamber, a premixing chamber in which hydrocarbon fuel and air are premixed, a nozzle with swirler for swirling and injecting the premixed fuel and air into the combustion chamber, to effect premixed combustion, and a fuel nozzle projecting into the combustion chamber and adapted to inject fuel at region wherein the premixed combustion is completed, so as to effect low air-ratio diffusion combustion thereby to produce reducing substance. NOx produced by the premixed combustion is reduced by reducing reaction with the reducing substances, so that the NOx concentration in the combustion gas is reduced. The combustor further includes an after-air ports on a peripheral wall defining the combustion chamber to effect combustion of unburnt substances.

公开(公告)号：US4820046A

公开(公告)日：1989-04-11

申请号：US120593

申请日：1987-11-12

申请人： Kenichi Sohma ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Hironobu Kobayashi ,  Norio Arashi ,  Hiroshi Miyadera

发明人： Kenichi Sohma ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Hironobu Kobayashi ,  Norio Arashi ,  Hiroshi Miyadera

IPC分类号： G01J3/18 ,  G01J3/28 ,  G01J3/443 ,  G01N21/72 ,  G01N21/75 ,  G01N21/76 ,  G01J3/30

CPC分类号： G01J3/2823 ,  G01J3/443 ,  G01N21/75 ,  G01J2003/2826 ,  G01J2003/283 ,  G01J3/1809 ,  G01N2021/6406 ,  G01N2021/725 ,  G01N21/72 ,  G01N21/76

摘要： A spectroscope apparatus includes means for separating light from an object to be measured into spectral components, means for mixing that part of the spectral components which exists in a desired wavelength range, and means for forming an image of the to-be-measured body of mixed light. The image thus obtained is very useful for observing the state of a combustion flame, the progress of photochemical reaction, the progress of biochemical reaction, a desired tissue in a cell, and the state of a flame for analyzing a solution which contains a metal ion, by flame spectrophotometery, that is, provides accurate information and makes possible a precise control operation.

摘要翻译： 分光计装置包括用于将光从被测量物体分离成光谱分量的装置，用于混合存在于所需波长范围内的部分光谱分量的装置，以及用于形成待测物体的图像的装置 混合光。 由此获得的图像对于观察燃烧火焰的状态，光化学反应的进展，生化反应的进展，细胞中的期望组织以及用于分析含有金属离子的溶液的火焰的状态非常有用 ，通过火焰分光光度法，即提供准确的信息并使得可以进行精确的控制操作。

公开(公告)号：US4784043A

公开(公告)日：1988-11-15

申请号：US46574

申请日：1987-05-06

申请人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Kenichi Sohma ,  Norio Arashi ,  Hiroshi Miyadera ,  Yoshitaka Takahashi

发明人： Hironobu Kobayashi ,  Shigeru Azuhata ,  Kiyoshi Narato ,  Tooru Inada ,  Kenichi Sohma ,  Norio Arashi ,  Hiroshi Miyadera ,  Yoshitaka Takahashi

IPC分类号： B05B7/04 ,  B05B7/08 ,  F22B31/00 ,  F23C7/00 ,  F23D1/00 ,  F23D11/10 ,  F23L15/04 ,  F23D1/02

CPC分类号： F23C7/004 ,  B05B7/0466 ,  B05B7/08 ,  F22B31/00 ,  F23D1/005 ,  F23D11/102 ,  F23L15/04 ,  Y02E20/348

摘要： An atomizer including a fuel supply passage for supplying a fuel, an atomizing medium supply passage for supplying an atomizing medium which is to be mixed with the fuel, a mixing chamber in communication with the fuel supply passage and the atomizing medium supply passage, and spray ports for spraying the fluid mixture consisting of the fuel and the atomizing medium from the mixing chamber. The fuel supply passage and the atomizing medium supply passages are communicated with the mixing chamber through a pre-mixing chamber having an annular cross-section defined by a large-diameter cylindrical surface and a small-diameter cylindrical surface. The fuel and the atomizing medium supplied from the fuel supply passage and the atomizing medium supply passage are pre-mixed the pre-mixing chamber. With this arrangement, it is possible to efficiently mix a slurry fuel and an atomizing medium, thus reducing the particle size of the atomized fuel particles and shortening the flame length. Thus, the atomizer of the invention is indispensable for the boilers which are intended for burning coal-water slurry. The invention makes it possible to form flames with reduced NOx generation and a high burning efficiency through combination between atomizer of the construction described above and a burner having a specific construction.

公开(公告)号：US4907962A

公开(公告)日：1990-03-13

申请号：US54391

申请日：1987-05-26

申请人： Shigeru Azuhata ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Kenichi Sohma ,  Tooru Inada ,  Norio Arashi ,  Hiroshi Miyadera ,  Masao Masutani

发明人： Shigeru Azuhata ,  Kiyoshi Narato ,  Hironobu Kobayashi ,  Kenichi Sohma ,  Tooru Inada ,  Norio Arashi ,  Hiroshi Miyadera ,  Masao Masutani

IPC分类号： F23C99/00 ,  F23C7/00 ,  F23D1/02

CPC分类号： F23D1/02 ,  F23C7/004

摘要： A low NOx burner comprises a pulverized coal nozzle for injecting a flow of a mixture of pulverized coal with primary air, a secondary air nozzle arranged externally of and coaxially with the pulverized coal nozzle, a tertiary air nozzle arranged externally of the secondary air nozzle and disposed coaxially with the pulverized coal nozzle, and a swirl flow generator for injecting secondary air and tertiary air as a respective swirl flow. Between the secondary air nozzle and the tertiary air nozzle, there is provided a spacer having such a thickness as to delay the mixing of the secondary air and the tertiary air and to form a swirl flow between the secondary air and the tertiary air.

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。