公开(公告)号：US07168374B2

公开(公告)日：2007-01-30

申请号：US11011047

申请日：2004-12-15

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 以便在从与燃烧器轴垂直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。 来自附加空气喷嘴12的空气量相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。

公开(公告)号：US06889619B2

公开(公告)日：2005-05-10

申请号：US10292694

申请日：2002-11-13

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： F24B1/187 ,  F23D1/00 ,  F23H5/00

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 and method uses a low oxygen concentration gas as a transporting gas for a low grade solid fuel such as brown coal or the like, provides for accelerating ignition of the fuel and for preventing slugging caused by combustion ash. Mixing of fuel and air inside a fuel nozzle 11 is accelerated by an additional air nozzle 12 and a separator 35 for separating a flow passage, arranged in the fuel nozzle 11, and an exit of the additional air nozzle 12 is set at a position that overlaps with the separator 35. Additional air is ejected in a direction nearly perpendicular to a flow direction of a fuel jet flowing through the fuel nozzle 11. The amount of air from the additional air nozzle 12 is varied corresponding to a combustion load, in order to assure stable burning of the fuel, and, to suppress radiant heat received by structures of the solid fuel burner and walls of the furnace.

摘要翻译： 固体燃料燃烧器和方法使用低氧浓度气体作为诸如褐煤等的低等级固体燃料的输送气体，用于加速燃料的点燃并防止由燃烧灰产生的s塞。 燃料喷嘴11内的燃料和空气的混合通过附加的空气喷嘴12和用于分离设置在燃料喷嘴11中的流路的分离器35加速，并且附加空气喷嘴12的出口被设定在 与分离器35重叠。 附加的空气沿与流过燃料喷嘴11的燃料射流的流动方向大致垂直的方向喷射。 来自附加空气喷嘴12的空气量相应于燃烧负荷而变化，以确保燃料的稳定燃烧，并且抑制固体燃料燃烧器和炉壁的结构所接收的辐射热。

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。

公开(公告)号：US20130291772A1

公开(公告)日：2013-11-07

申请号：US13825559

申请日：2011-09-30

申请人： Toshihiko Mine ,  Kenji Kiyama ,  Koji Kuramashi ,  Kenichi Ochi ,  Hirofumi Okazaki

发明人： Toshihiko Mine ,  Kenji Kiyama ,  Koji Kuramashi ,  Kenichi Ochi ,  Hirofumi Okazaki

IPC分类号： F23L7/00 ,  F23J15/02 ,  F23K1/00 ,  F23D1/00 ,  F23C9/00

CPC分类号： F23D1/005 ,  F22B1/18 ,  F23C9/003 ,  F23C2201/20 ,  F23C2206/102 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23J15/02 ,  F23K1/00 ,  F23L7/007 ,  F23L2900/07001 ,  F23L2900/07003 ,  F23L2900/07006 ,  F23L2900/07007 ,  Y02E20/322 ,  Y02E20/344

摘要： An oxygen combustion system includes a boiler to burn fuel using combustion gas composed of oxygen-rich gas and circulating flue gas, a dust remover disposed in a flue through which flue gas discharged from the boiler flows, a second flue leading the combustion gas to the boiler, the combustion gas being made by mixing the circulating flue gas extracted downstream of the dust remover with the oxygen-rich gas, a combustion gas heater exchanging heat between the flue gas flowing between the boiler and dust remover and the combustion gas flowing through the second flue, and a flue gas cooler disposed between the heater and the dust remover to cool the flue gas. A control unit controls at least one of a flow rate and cooling medium temperature of the flue gas cooler such that temperature of the flue gas introduced into the dust remover will be between 90° C. and 140° C.

摘要翻译： 氧气燃烧系统包括使用由富氧气体和循环烟道气组成的燃烧气体燃烧燃料的锅炉，设置在烟道中排出的烟道的除尘器，通过该烟道排出烟道气流过的第二烟道， 锅炉，通过将从除尘器下游提取的循环烟道气与富氧气体混合而形成的燃烧气体，在锅炉和除尘器之间流动的烟道气与流过锅炉的燃烧气体之间交换热量的燃烧气体加热器 第二烟道和布置在加热器和除尘器之间的烟道气体冷却器以冷却烟道气。 控制单元控制烟气冷却器的流量和冷却介质温度中的至少一个，使得引入除尘器的烟道气的温度将在90℃和140℃之间。

公开(公告)号：US5937770A

公开(公告)日：1999-08-17

申请号：US862256

申请日：1997-05-23

申请人： Hironobu Kobayashi ,  Hirofumi Okazaki ,  Masayuki Taniguchi ,  Kenji Kiyama

发明人： Hironobu Kobayashi ,  Hirofumi Okazaki ,  Masayuki Taniguchi ,  Kenji Kiyama

IPC分类号： F23C99/00 ,  F23D1/00 ,  F23D1/02 ,  F23C1/10

CPC分类号： F23D1/00 ,  F23D2201/20 ,  F23D2209/20

摘要： A pulverized coal burner includes a venturi for contracting a flow of a mixture of pulverized coal and primary air toward a central axis of a fuel nozzle 2. A spindle having a cone is provided coaxially with the central axis and gradually expands from an upstream side to a downstream side to cause the mixture to impinge thereon and diffuse. A column extends from the cone and is parallel to the central axis of the fuel nozzle, and a cone extends from the column and gradually narrows from an upstream side to a downstream side. A flow path divider, having a cone gradually narrowing coaxially with the central axis on the downstream side of the spindle, and a cylinder extending from the cone and being coaxial and parallel with the central axis of the fuel nozzle 2, coaxially divides the flow path.

摘要翻译： 粉煤燃烧器包括用于将煤粉和一次空气的混合物的流动朝向燃料喷嘴2的中心轴收缩的文氏管。具有锥体的心轴与中心轴同轴地设置，并从上游侧逐渐膨胀到 下游侧使混合物撞击并扩散。 柱从锥体延伸并且平行于燃料喷嘴的中心轴线，并且锥体从柱延伸并且从上游侧逐渐变窄到下游侧。 具有与主轴下游侧的中心轴同轴的锥体的流路分隔器以及从锥体延伸并且与燃料喷嘴2的中心轴线同轴并平行的圆筒同轴地分开流路 。

公开(公告)号：US20100162930A1

公开(公告)日：2010-07-01

申请号：US12676971

申请日：2008-03-06

申请人： Hirofumi Okazaki ,  Koji Kuramashi ,  Yusuke Ochi ,  Akira Baba ,  Takanori Yano

发明人： Hirofumi Okazaki ,  Koji Kuramashi ,  Yusuke Ochi ,  Akira Baba ,  Takanori Yano

IPC分类号： F23N5/00 ,  F23D1/00 ,  F23C99/00 ,  F23K3/02 ,  F23C7/00

CPC分类号： F23D1/00 ,  F23C7/008 ,  F23C2201/20 ,  F23D2201/20

摘要： Provided is a solid fuel burner (60) suitable for controlling a flame to be formed by combustion of fuel ejected from the burner (60) and a temperature distribution in a furnace, a combustion apparatus using the solid fuel burner (60), and a method of operating the combustion apparatus. Providing in the fuel nozzle (10) a plurality of gas ejection nozzles (81), (82) and a restriction (obstacle) (19) downstream thereof, and ejecting a relatively large amount of gas from a portion of the gas ejection nozzles (81) provides a circumferential distribution in fuel concentration. Further, having the restriction (obstacle) (19) on a downstream side increases a deviation in fuel concentration. Providing a fuel concentration deviation in the circumferential direction makes it possible to change the forming position of a flame. Therefore, regulating the flow rate of gas flowing through the gas ejection nozzles (81), (82) makes it possible to control constant the temperature of combustion gas at a furnace exit, the temperature of a heat transfer tube provided on a furnace wall surface, the temperature of a fluid flowing through the heat transfer tube, or the temperature of a heat transfer tube provided in a furnace or at a downstream-side flue portion thereof and the temperature of a fluid flowing through the heat transfer tube.

摘要翻译： 提供一种固体燃料燃烧器（60），其适于控制由燃烧器（60）喷射的燃料的燃烧和炉内的温度分布形成的火焰，使用固体燃料燃烧器（60）的燃烧装置，以及 操作燃烧装置的方法。 在燃料喷嘴（10）中设置有多个气体喷射喷嘴（81），（82）和其下游的限制（障碍物）（19），并且从气体喷射喷嘴的一部分喷射相对大量的气体 81）提供燃料浓度的圆周分布。 此外，在下游侧具有限制（障碍物）（19）会增加燃料浓度的偏差。 在圆周方向上提供燃料浓度偏差使得可以改变火焰的形成位置。 因此，通过调节流过气体喷嘴（81），（82）的气体的流量，能够使炉出口处的燃烧气体的温度恒定，设在炉壁面上的传热管的温度 流过传热管的流体的温度，或设置在炉子或下游侧烟道部分的传热管的温度以及流过传热管的流体的温度。

公开(公告)号：US06338304B2

公开(公告)日：2002-01-15

申请号：US09376353

申请日：1999-08-18

申请人： Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

发明人： Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

IPC分类号： F23C110

CPC分类号： F23C5/00 ,  F22B31/00 ,  F23C6/047 ,  F23C7/008 ,  F23C7/02 ,  F23C2201/101 ,  F28F19/00 ,  Y02E20/328

摘要： A boiler has a combustion chamber formed by front and rear walls and a side wall extending between the front and rear walls. Plural stages of burners are placed on at least one of the front and rear walls. In the front and rear walls are opposing gas jets for making a pressure of the gas near the side wall within the combustion chamber higher than the pressure of the gas at a center portion of the combustion chamber. The gas jet ports are disposed at a height within a range of the height of the burner stages. The burner stages supply the pulverized coal, the air for transferring the pulverized coal and the air for burning. A part of the air for transferring the pulverized coal or the air for burning is supplied in a branched manner to the gas jet port and injected into the combustion chamber. Further, the air is preferably injected from the gas jet ports in a direct gas flow, not a swirling flow.

摘要翻译： 锅炉具有由前壁和后壁形成的燃烧室和在前壁和后壁之间延伸的侧壁。 燃烧器的多级放置在前壁和后壁中的至少一个上。 前壁和后壁是相对的气体射流，用于使燃烧室内侧壁附近的气体压力高于燃烧室中心部分处的气体压力。 气体喷射口设置在燃烧器级的高度范围内的高度。 燃烧器阶段供应粉煤，用于转移粉煤的空气和用于燃烧的空气。 将用于转移粉煤或燃烧空气的空气的一部分以分支方式供给到气体喷射口并喷射到燃烧室中。 此外，空气优选地从气体喷射口以直接气流而不是涡流喷射。

公开(公告)号：US06490985B2

公开(公告)日：2002-12-10

申请号：US09996919

申请日：2001-11-30

申请人： Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

发明人： Kenji Yamamoto ,  Hironobu Kobayashi ,  Hirofumi Okazaki ,  Toshikazu Tsumura ,  Kenji Kiyama

IPC分类号： F23J1100

CPC分类号： F23C5/00 ,  F22B31/00 ,  F23C6/047 ,  F23C7/008 ,  F23C7/02 ,  F23C2201/101 ,  F28F19/00 ,  Y02E20/328

摘要： The invention provides a boiler provided with low cost means which can reduce a concentration of CO, an unburned matter, an attached ash and the like near a side wall and maintain a combustion state well with a simple structure. In a boiler having a combustion chamber 13 formed by front and rear walls (burner walls) provided with a plural stages of burners 2, 3 and 4 on at least one of them and opposing to each other, and side walls 1a and 1b crossing to said burner walls 14a and 14b, a gas port 6 containing no fuel for making a pressure of a gas near said side walls 1a and 1b within said combustion chamber 13 higher than a pressure of a gas at a center portion of said combustion chamber 13 is provided between an outermost burner and the side walls 1a and 1b within a range of a height of said burner stages 2, 3 and 4. A combustion gas 16 can not come close to the side walls 1a and 1b due to the jet 18 of the gas.

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：US07482588B2

公开(公告)日：2009-01-27

申请号：US10390695

申请日：2003-03-19

申请人： Kenji Yamamoto ,  Osamu Itou ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Taro Sakata

发明人： Kenji Yamamoto ,  Osamu Itou ,  Masayuki Taniguchi ,  Hirofumi Okazaki ,  Taro Sakata

IPC分类号： G01T1/16

CPC分类号： G06F1/16

摘要： Conventionally, a coarse mesh having a same size in that a calculation cell was used regardless to whether the location is near or remote from radiation elements such as calculation cells and wall face elements. Therefore, it took very long calculation time to calculate an energy exchange between a remote location covered by a coarse mesh and a noted cell. Further, there were many non-influential cells for calculation in a location remote from a noted radiation element for radiation calculation, the calculation accuracy was low. The present invention is to propose a method of calculating radiation which is provided with a measure for completing the calculation rapidly while keeping calculation accuracy high.In that, near at a calculation cell from which radiation energy is emitted or at a calculation cell P into which radiation energy is absorbed, a small (level 0) cell is used and at a remote location from the calculation cell P, a large (level n) cell formed by combining plural small cells is used. Further, a largest calculation cell which comes into field of view angle ΔΩ covered by a ray is selected. As a result, the accuracy of the radiation calculation is enhanced, the calculation time is shortened and amount of memory necessary for the calculation can be reduced.

摘要翻译： 通常，使用与计算单元相同尺寸的粗网格，而不管位置是靠近还是远离诸如计算单元和壁面元件的辐射元件。 因此，计算一个粗糙网格覆盖的远程位置与一个注释单元之间的能量交换花费了很长的计算时间。 此外，在远离用于辐射计算的所述辐射元件的位置中存在许多用于计算的非影响性细胞，计算精度低。 本发明提出一种计算辐射的方法，该方法具有快速完成计算的措施，同时保持计算精度高。 因此，在发射辐射能量的计算单元或辐射能量被吸收到的计算单元P附近，使用小（0级）单元，并且在与计算单元P相距远的位置，大（ 使用通过组合多个小单元形成的n级单元。 此外，选择进入由光线覆盖的视角DeltaOmega的最大计算单元。 结果，提高了辐射计算的精度，缩短了计算时间，可以减少计算所需的存储量。