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公开(公告)号：US06938560B2
公开(公告)日：2005-09-06
申请号：US10744101
申请日：2003-12-24
CPC分类号： F23D1/00 , F23C6/045 , F23C7/004 , F23C9/00 , F23C2201/101 , F23C2202/30 , F23L9/04
摘要： There is disclosed a solid fuel boiler including: a furnace including a plurality of solid fuel burners and a furnace wall to perform horizontal firing; a duct through which a part of combustion exhaust gas recirculates to a furnace from a downstream side of the furnace; heat exchanger tubes disposed on a furnace wall and in a heat recovery area of the furnace; and recirculation gas ports via which the recirculation gas is supplied to a reducing flame portion of the burners in the furnace without combining the gas with a flame in the vicinity of an outlet of the burner, so that molten ash is prevented from firmly sticking to the furnace wall and thermal NOx, fuel NOx, and unburned carbon.
摘要翻译： 公开了一种固体燃料锅炉，其包括：包括多个固体燃料燃烧器的炉和进行水平燃烧的炉壁; 燃烧废气的一部分从炉的下游侧再循环到炉中的管道; 设置在炉壁和炉的热回收区域中的热交换器管; 以及再循环气体端口，通过该再循环气体将再循环气体供应到炉内的燃烧器的还原火焰部分，而不将气体与燃烧器出口附近的火焰组合，使得熔融灰被防止牢固地粘到 炉壁和热NOx，燃料NOx和未燃碳。
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公开(公告)号：US07392752B2
公开(公告)日：2008-07-01
申请号：US11191958
申请日：2005-07-29
IPC分类号： F23B5/02
CPC分类号： F23D1/00 , F23C6/045 , F23C7/004 , F23C9/00 , F23C2201/101 , F23C2202/30 , F23L9/04
摘要： There is disclosed a solid fuel boiler including: a furnace including a plurality of solid fuel burners and a furnace wall to perform horizontal firing; a duct through which a part of combustion exhaust gas recirculates to a furnace from a downstream side of the furnace; heat exchanger tubes disposed on a furnace wall and in a heat recovery area of the furnace; and recirculation gas ports via which the recirculation gas is supplied to a reducing flame portion of the burners in the furnace without combining the gas with a flame in the vicinity of an outlet of the burner, so that molten ash is prevented from firmly sticking to the furnace wall and thermal NOx, fuel NOx, and unburned carbon.
摘要翻译： 公开了一种固体燃料锅炉，其包括：包括多个固体燃料燃烧器的炉和进行水平燃烧的炉壁; 燃烧废气的一部分从炉的下游侧再循环到炉中的管道; 设置在炉壁和炉的热回收区域中的热交换器管; 以及再循环气体端口，通过该再循环气体将再循环气体供应到炉内的燃烧器的还原火焰部分，而不将气体与燃烧器出口附近的火焰组合，使得熔融灰被防止牢固地粘到 炉壁和热NOx，燃料NOx和未燃碳。
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公开(公告)号：US20050257721A1
公开(公告)日：2005-11-24
申请号：US11191958
申请日：2005-07-29
CPC分类号： F23D1/00 , F23C6/045 , F23C7/004 , F23C9/00 , F23C2201/101 , F23C2202/30 , F23L9/04
摘要： There is disclosed a solid fuel boiler including: a furnace including a plurality of solid fuel burners and a furnace wall to perform horizontal firing; a duct through which a part of combustion exhaust gas recirculates to a furnace from a downstream side of the furnace; heat exchanger tubes disposed on a furnace wall and in a heat recovery area of the furnace; and recirculation gas ports via which the recirculation gas is supplied to a reducing flame portion of the burners in the furnace without combining the gas with a flame in the vicinity of an outlet of the burner, so that molten ash is prevented from firmly sticking to the furnace wall and thermal NOx, fuel NOx, and unburned carbon.
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公开(公告)号：US6152051A
公开(公告)日：2000-11-28
申请号：US51744
申请日：1998-04-20
申请人： Kenji Kiyama , Toshikazu Tsumura , Tadashi Jimbo , Koji Kuramashi , Shigeki Morita , Miki Mori
发明人： Kenji Kiyama , Toshikazu Tsumura , Tadashi Jimbo , Koji Kuramashi , Shigeki Morita , Miki Mori
CPC分类号： F23D1/00 , F23C2202/40 , F23C2900/09002 , F23D2201/20 , F23D2209/20
摘要： A combustion burner includes a mixture nozzle, a gas supply nozzle, and a flow guide. The mixture nozzle extends toward an interior of a furnace, and defines a mixture passage through which a mixture containing powdered solid fuel and gas for transferring the solid fuel flows. A distal end portion of the mixture nozzle is flared so that a flow passage area of the mixture passage increases progressively in a direction of flow of the mixture. The gas supply nozzle radially surrounds the mixture nozzle to define between the gas supply nozzle and the mixture nozzle a gas passage through which a combustion oxygen-containing gas flows toward the furnace. The flow guide is provided within the mixture nozzle at a position upstream of the flared portion of the mixture nozzle with respect to a flow of the mixture so as to make the mixture flow straight along an inner peripheral surface of the flared portion of the mixture nozzle.
摘要翻译： PCT No.PCT / JP97 / 01489 Sec。 371日期：1998年4月20日 102（e）1998年4月20日PCT 1997年4月30日PCT PCT。 公开号WO98 / 08026 日期1998年2月26日燃烧器包括混合喷嘴，气体供给喷嘴和流动引导件。 混合物喷嘴朝向炉内部延伸，并且限定了混合物通道，含有固体燃料和固体燃料的混合物的混合物通过该混合通道流动。 混合喷嘴的远端部分展开，使得混合物通道的流动通道面积在混合物的流动方向上逐渐增加。 气体供给喷嘴径向地包围混合喷嘴，以在气体供给喷嘴和混合喷嘴之间限定燃烧含氧气体通过其流向炉的气体通道。 在混合喷嘴内，相对于混合物的流动，在混合喷嘴的扩口部分的上游位置处设置流动引导件，以使混合物沿着混合喷嘴的扩口部分的内周表面直线流动 。
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公开(公告)号：US20080156236A1
公开(公告)日：2008-07-03
申请号：US11958763
申请日：2007-12-18
申请人： Osamu Ito , Masayuki Taniguchi , Hironobu Kobayashi , Keiichiro Yamamoto , Yoshio Shimogori , Teruyuki Okazaki , Kenji Kiyama
发明人： Osamu Ito , Masayuki Taniguchi , Hironobu Kobayashi , Keiichiro Yamamoto , Yoshio Shimogori , Teruyuki Okazaki , Kenji Kiyama
摘要： A pulverized coal combustion boiler 100 comprising: a furnace 50; a plurality of burners 6 for supplying and burning pulverized coal fuel in the furnace arranged at positions of a plurality of stages having different heights on a furnace front wall 51 and a furnace rear wall 52 of furnace wall surfaces forming the furnace 50, the furnace rear wall 52 arranged for facing the furnace front wall 51; a plurality of mills 2 arranged for supplying the pulverized coal fuel to the plurality of burners 6 arranged at each of the plurality of stages; and pulverized fuel pipes 5 arranged for distributing and supplying the pulverized coal to the plurality of burners 6 at each of the stages of the furnace front wall 51 and the furnace rear wall 52 from each of the plurality of mills 2.
摘要翻译： 一种粉煤燃烧锅炉100，包括：炉50; 多个燃烧器6，用于在炉壁前壁51和炉后壁52上形成炉子50的炉后表面上设置多个不同高度位置的炉子中的粉煤燃料，炉后方 布置成面向炉前壁51的壁52; 多个研磨机2，其设置用于将粉煤燃料供给到布置在多个阶段中的多个燃烧器6; 以及粉碎燃料管5，其布置成从多个轧机2的炉前壁51和炉后壁52的每个阶段向多个燃烧器6分配和供应粉煤。
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26.发明申请Solid fuel burner, solid fuel burner combustion method, combustion apparatus and combustion apparatus operation method 有权固体燃料燃烧器，固体燃料燃烧器燃烧方式，燃烧装置和燃烧装置的运行方法公开(公告)号：US20050120927A1
公开(公告)日：2005-06-09
申请号：US10983901
申请日：2004-11-09
CPC分类号： F23D1/00 , F23D2201/20 , F23D2201/30
摘要： Subject A solid fuel burner and its combustion method suited for encouraging fuel ignition and avoiding slugging caused by combustion ash, wherein a gas of low oxygen concentration (exhaust combustion gas) is used as a carrier gas of such a low grade solid fuel as brown coal. Means for Solving the Subject An additional air nozzle 12 for jetting additional air having a velocity component in the circumferential direction of a fuel nozzle 11 is provided in the fuel nozzle 11, thereby encouraging mixing between the fuel and air in the fuel nozzle 11. Further, the amount of air supplied from the additional air nozzle 12 is adjusted in response to the difference in combustion loads. Under light load, the amount of air supplied from the additional air nozzle 12 is increased so as to increase the oxygen concentration of the circulating flow 19 formed downstream of the outside of the outlet of the fuel nozzle 11, whereby stable combustion is ensured. Under heavy load, by contrast, the amount of air supplied from the additional air nozzle 12 is decreased, and a flame is formed away from the fuel nozzle 11 in such a way that burner structures and furnace wall will be less subjected to radiant heat.
摘要翻译： 主题一种固体燃料燃烧器及其燃烧方法，其适用于鼓励燃油点火并避免由燃烧灰引起的堵塞，其中使用低氧浓度（废气燃烧气体）的气体作为棕色煤等低等级固体燃料的载气 。 用于解决对象的装置在燃料喷嘴11中设置有用于喷射在燃料喷嘴11的圆周方向上具有速度分量的附加空气的附加空气喷嘴12，从而促进燃料喷嘴11中的燃料和空气之间的混合。 响应于燃烧负荷的差异来调节从附加空气喷嘴12供应的空气量。 在轻负载下，增加从附加空气喷嘴12供应的空气量，以增加形成在燃料喷嘴11的出口外侧的下游的循环流19的氧气浓度，从而确保燃烧稳定。 相比之下，在重负荷下，从附加空气喷嘴12供应的空气量减少，并且燃烧喷嘴11形成远离燃烧器结构和炉壁的辐射热较少的火焰。
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27.发明授权Solid fuel burner, solid fuel burner combustion method, combustion apparatus and combustion apparatus operation method 有权固体燃料燃烧器，固体燃料燃烧器燃烧方式，燃烧装置和燃烧装置的运行方法公开(公告)号：US07213522B2
公开(公告)日：2007-05-08
申请号：US10983901
申请日：2004-11-09
IPC分类号： F23D1/00
CPC分类号： F23D1/00 , F23D2201/20 , F23D2201/30
摘要： A solid fuel burner and its combustion method suited for encouraging fuel ignition and avoiding slugging caused by combustion ash, wherein a gas of low oxygen concentration (exhaust combustion gas) is used as a carrier gas of such a low grade solid fuel as brown coal.Means for Solving the SubjectAn additional air nozzle 12 for jetting additional air having a velocity component in the circumferential direction of a fuel nozzle 11 is provided in the fuel nozzle 11, thereby encouraging mixing between the fuel and air in the fuel nozzle 11. Further, the amount of air supplied from the additional air nozzle 12 is adjusted in response to the difference in combustion loads. Under light load, the amount of air supplied from the additional air nozzle 12 is increased so as to increase the oxygen concentration of the circulating flow 19 formed downstream of the outside of the outlet of the fuel nozzle 11, whereby stable combustion is ensured. Under heavy load, by contrast, the amount of air supplied from the additional air nozzle 12 is decreased, and a flame is formed away from the fuel nozzle 11 in such a way that burner structures and furnace wall will be less subjected to radiant heat.
摘要翻译： 一种固体燃料燃烧器及其燃烧方法，其适用于鼓励燃油点火并避免由燃烧灰引起的气塞，其中使用低氧浓度（废气燃烧气体）的气体作为棕煤等低等级固体燃料的载气。 用于解决主体的装置在燃料喷嘴11中设置有用于喷射在燃料喷嘴11的圆周方向上具有速度分量的附加空气的附加空气喷嘴12，从而促进燃料喷嘴11中的燃料和空气之间的混合。 此外，根据燃烧负荷的差异，调节从附加空气喷嘴12供给的空气量。 在轻负载下，增加从附加空气喷嘴12供应的空气量，以增加形成在燃料喷嘴11的出口外侧的下游的循环流19的氧气浓度，从而确保燃烧稳定。 相比之下，在重负荷下，从附加空气喷嘴12供应的空气量减少，并且燃烧喷嘴11形成远离燃烧器结构和炉壁的辐射热较少的火焰。
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28.发明申请Solid Fuel Burner, Solid Fuel Burner Combustion Method, Combustion Apparatus and Combustion Apparatus Operation Method 有权固体燃料燃烧器，固体燃料燃烧器燃烧方法，燃烧装置和燃烧装置操作方法公开(公告)号：US20070092847A1
公开(公告)日：2007-04-26
申请号：US11566425
申请日：2006-12-04
IPC分类号： F23C7/00
CPC分类号： F23D1/00 , F23D2201/20 , F23D2201/30
摘要： A solid fuel burner and its combustion method suited for encouraging fuel ignition and avoiding slugging caused by combustion ash, wherein a gas of low oxygen concentration (exhaust combustion gas) is used as a carrier gas of such a low grade solid fuel as brown coal. An additional air nozzle for jetting additional air having a velocity component in the circumferential direction of a fuel nozzle is provided in the fuel nozzle, thereby encouraging mixing between the fuel and air in the fuel nozzle. Further, the amount of air supplied from the additional air nozzle is adjusted in response to the difference in combustion loads. Under light load, the amount of air supplied from the additional air nozzle is increased so as to increase the oxygen concentration of the circulating flow formed downstream of the outside of the outlet of the fuel nozzle, whereby stable combustion is ensured. Under heavy load, by contrast, the amount of air supplied from the additional air nozzle is decreased, and a flame is formed away from the fuel nozzle in such a way that burner structures and furnace wall will be less subjected to radiant heat.
摘要翻译： 一种固体燃料燃烧器及其燃烧方法，其适用于鼓励燃油点火并避免由燃烧灰引起的气塞，其中使用低氧浓度（废气燃烧气体）的气体作为棕煤等低等级固体燃料的载气。 在燃料喷嘴中设置有用于喷射在燃料喷嘴的圆周方向上具有速度分量的附加空气的附加空气喷嘴，从而促进燃料喷嘴中的燃料和空气之间的混合。 此外，响应于燃烧负荷的差异，调节从附加空气喷嘴供给的空气量。 在轻负载下，增加从附加空气喷嘴供给的空气量，从而增加在燃料喷嘴出口外侧下游形成的循环流的氧浓度，从而确保燃烧稳定。 相比之下，在重负载下，从附加空气喷嘴供给的空气量减少，并且燃烧器结构和炉壁的辐射热不太可能形成远离燃料喷嘴的火焰。
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29.发明授权Solid fuel burner, solid fuel burner combustion method, combustion apparatus and combustion apparatus operation method 有权固体燃料燃烧器，固体燃料燃烧器燃烧方式，燃烧装置和燃烧装置的运行方法公开(公告)号：US07770528B2
公开(公告)日：2010-08-10
申请号：US11566425
申请日：2006-12-04
IPC分类号： F23D1/00
CPC分类号： F23D1/00 , F23D2201/20 , F23D2201/30
摘要： A solid fuel burner and its combustion method suited for encouraging fuel ignition and avoiding slugging caused by combustion ash, wherein a gas of low oxygen concentration (exhaust combustion gas) is used as a carrier gas of such a low grade solid fuel as brown coal. An additional air nozzle for jetting additional air having a velocity component in the circumferential direction of a fuel nozzle is provided in the fuel nozzle, thereby encouraging mixing between the fuel and air in the fuel nozzle. Further, the amount of air supplied from the additional air nozzle is adjusted in response to the difference in combustion loads. Under light load, the amount of air supplied from the additional air nozzle is increased so as to increase the oxygen concentration of the circulating flow formed downstream of the outside of the outlet of the fuel nozzle, whereby stable combustion is ensured. Under heavy load, by contrast, the amount of air supplied from the additional air nozzle is decreased, and a flame is formed away from the fuel nozzle in such a way that burner structures and furnace wall will be less subjected to radiant heat.
摘要翻译： 一种固体燃料燃烧器及其燃烧方法，其适用于鼓励燃油点火，避免由燃烧灰引起的堵塞，其中使用低氧浓度（废气燃烧气体）的气体作为褐煤等低等级固体燃料的载气。 在燃料喷嘴中设置有用于喷射在燃料喷嘴的圆周方向上具有速度分量的附加空气的附加空气喷嘴，从而促进燃料喷嘴中的燃料和空气之间的混合。 此外，响应于燃烧负荷的差异，调节从附加空气喷嘴供给的空气量。 在轻负载下，增加从附加空气喷嘴供给的空气量，从而增加在燃料喷嘴出口外侧下游形成的循环流的氧浓度，从而确保燃烧稳定。 相比之下，在重负荷下，从附加空气喷嘴供应的空气量减少，并且燃烧器结构和炉壁的辐射热不太可能形成远离燃料喷嘴的火焰。
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公开(公告)号：US20130340659A1
公开(公告)日：2013-12-26
申请号：US13981485
申请日：2011-02-22
申请人： Yusuke Ochi , Kouji Kuramashi , Kenji Kiyama , Hirofumi Okazaki
发明人： Yusuke Ochi , Kouji Kuramashi , Kenji Kiyama , Hirofumi Okazaki
摘要： In a boiler having plurality of burners arranged on a furnace wall of a furnace, each burner includes a cylindrical fuel nozzle for injecting a mixture of fuel and carrier gas therefor into the furnace; one or more cylindrical air nozzles provided on the outer circumference of the nozzle for injecting combustion air into the furnace, and a wind box for supplying combustion air to the nozzles in common. The wind box is provided with openings through which combustion air flows in from one direction perpendicular to the axial direction of the burner, and is partitioned by a partition wall to form plurality of parallel flow paths for the air flowing in through the openings. Some of the plurality of flow paths are connected to an upper part of the combustion air nozzle, and the other flow paths are connected to a lower part of the nozzle.
摘要翻译： 在具有布置在炉的炉壁上的多个燃烧器的锅炉中，每个燃烧器包括用于将燃料和载气的混合物喷射到炉中的圆柱形燃料喷嘴; 设置在喷嘴的外周上的一个或多个圆柱形空气喷嘴，用于将燃烧空气注入炉中;以及风箱，用于将共同的燃烧空气供给喷嘴。 风箱设置有开口，燃烧空气通过该开口从垂直于燃烧器的轴向的一个方向流入，并且被分隔壁分隔开以形成用于通过开口流入的空气的多个平行流动路径。 多个流路中的一些连接到燃烧空气喷嘴的上部，其他流路连接到喷嘴的下部。
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