公开(公告)号：US20130112120A1

公开(公告)日：2013-05-09

申请号：US13808119

申请日：2012-02-16

Applicant: Yuehua Li

Inventor： Yuehua Li

IPC: F23D1/02 ,  F23D1/00

CPC classification number: F23D1/02 ,  F23D1/005 ,  F23D2201/20

Abstract: A dense phase swirl pulverized coal burner comprises a primary air channel, a direct flow secondary air channel and a outermost swirl secondary air channel; and multiple levels of pulverized coal concentration rings are arranged axially at intervals along the oil gun casing in a straight tube section of the primary air channel, so that pulverized coal air flow is distributed thickly outside and thinly inside the primary air nozzle. In the invention, dense phase pulverized coal outside the primary air nozzle passes through guide vanes, forms disturbed flow, is ejected into a furnace and mixes with high temperature backflow flue gas rapidly and sufficiently at an outlet. Meanwhile, dilute pulverized coal air flow at the center is ejected into the furnace by direct flow, ensuring subsequent mixing and combustion of pulverized coal flow. The primary air nozzle and the secondary air nozzle are provided with cone flaring structures with certain angle to effectively control appropriate mixing of secondary air and pulverized coal. The invention has advantages of strong ignition and combustion stability, good coal adaptability, low nitric oxide emission, simple primary air channel structure and small resistance, which effectively slows wear rate of parts.

Abstract translation: 密相涡流粉煤燃烧器包括一次空气通道，直流二次空气通道和最外旋涡二次空气通道; 并且在一次空气通道的直管部分中沿着油枪壳体间隔地布置多个级别的粉煤浓度环，使得粉煤气流在一次空气喷嘴内部厚薄地分布。 在本发明中，一次空气喷嘴外的密相粉煤通过导叶，形成扰流，喷入炉中，并在出口处快速充分地与高温回流烟气混合。 同时，中心的粉煤气稀释气流直接流入炉内，确保粉煤流的混合和燃烧。 一次空气喷嘴和二次空气喷嘴具有一定角度的锥形扩口结构，以有效地控制二次空气和粉煤的适当混合。 本发明具有燃点稳定性好，适应性好，一氧化氮排放少，一次空气通道结构简单，阻力小等优点，有效降低了零件的磨损率。

公开(公告)号：US20110146545A1

公开(公告)日：2011-06-23

申请号：US12640404

申请日：2009-12-17

Applicant: Gregory L. Morse ,  Ivo Slezak ,  Paulo Cavalcanti

Inventor： Gregory L. Morse ,  Ivo Slezak ,  Paulo Cavalcanti

IPC: F23K3/00 ,  B23P15/00

CPC classification number: F23D1/00 ,  F23D2201/101 ,  F23D2201/20 ,  F23D2211/00

Abstract: A solid fuel nozzle tip for issuing a flow of mixed solid fuel and air into a boiler or furnace includes an outer nozzle body having an outer flow channel extending therethrough from an inlet to an outlet of the outer nozzle body. An inner nozzle body has an inner flow channel extending therethrough from an inlet to an outlet of the inner nozzle body. The inner nozzle body is mounted within the outer nozzle body with the inner flow channel inboard of and substantially aligned with the outer flow channel. The inner and outer nozzle bodies are joined together so as to accommodate movement relative to one another due to thermal expansion and contraction of the outer and inner nozzle bodies.

Abstract translation: 用于将混合的固体燃料和空气流引入锅炉或炉中的固体燃料喷嘴头包括外部喷嘴体，其具有从外部喷嘴体的入口到出口延伸穿过的外部流动通道。 内部喷嘴体具有从内部喷嘴体的入口到出口延伸穿过的内部流动通道。 内部喷嘴体安装在外部喷嘴体内，内部流动通道内侧并与外部流动通道基本对准。 内部和外部喷嘴体连接在一起，以便由于外部和外部喷嘴体的热膨胀和收缩而适应彼此的移动。

公开(公告)号：US07770528B2

公开(公告)日：2010-08-10

申请号：US11566425

申请日：2006-12-04

Applicant: Hirofumi Okazaki ,  Kenji Yamamoto ,  Kenji Kiyama ,  Kouji Kuramashi

Inventor： Hirofumi Okazaki ,  Kenji Yamamoto ,  Kenji Kiyama ,  Kouji Kuramashi

IPC: F23D1/00

CPC classification number: F23D1/00 ,  F23D2201/20 ,  F23D2201/30

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100162930A1

公开(公告)日：2010-07-01

申请号：US12676971

申请日：2008-03-06

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

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

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

CPC classification number: F23D1/00 ,  F23C7/008 ,  F23C2201/20 ,  F23D2201/20

Abstract: 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.

Abstract translation: 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：US20100154688A1

公开(公告)日：2010-06-24

申请号：US12504932

申请日：2009-07-17

Applicant: Daniel J. Adam ,  Oliver G. Briggs, JR. ,  Thomas J. Campanelli ,  Paul M. Colson ,  Christopher D. Curl ,  Dai Q. Dau ,  Wendell H. Mills

Inventor： Daniel J. Adam ,  Oliver G. Briggs, JR. ,  Thomas J. Campanelli ,  Paul M. Colson ,  Christopher D. Curl ,  Dai Q. Dau ,  Wendell H. Mills

IPC: F23D1/00 ,  B05B1/26

CPC classification number: F23D1/00 ,  F15D1/04 ,  F23D2201/101 ,  F23D2201/20 ,  F23K3/02 ,  F23K2203/008 ,  F23K2203/201 ,  F23M11/042

Abstract: A head assembly 52,152 for a pulverized coal nozzle includes a turning vane 54 or a curved vane 154 disposed within a pipe elbow. The vanes 54,154 are angled relative to the inlet port and the outlet port of the pipe elbow to redirect a stream of air and pulverized solid fuel particles from the inlet port 60,160 toward the outlet port 62,162. The coal rope-breaking vane 56 is pivotable about an axis to adjust an angle of the vanes relative to a stream of air and pulverized solid fuel particles from the inlet port 60,160. An adjustment bar 66 may connect to the vanes 56 and extend outward through the pipe elbow to allow the vanes 56 to be adjusted while the pulverized solid fuel particles flow through the head assembly 52. The pipe elbow may further include inspection ports 68,168 and a removable cover 70,170. The vanes may be attached to the removable cover 70,170 thus allowing them to be easily removed and replaced.

Abstract translation: 用于粉煤喷嘴的头组件52,152包括设置在管弯头内的转动叶片54或弯曲叶片154。 叶片54,154相对于管弯头的入口和出口成角度，以将空气流和粉碎的固体燃料颗粒从入口端口60,160转向出口端口62,162。 断煤叶片56可围绕轴线枢转，以便相对于空气流和来自入口端口60,160的粉碎的固体燃料颗粒调节叶片的角度。 调节杆66可以连接到叶片56并且通过管弯头向外延伸，以允许叶片56被调节，同时粉碎的固体燃料颗粒流过头部组件52.管弯头还可以包括检查端口68,168和可移除 盖70,170。 叶片可以附接到可移除的盖70,170，从而允许它们容易地移除和更换。

公开(公告)号：US20100123027A1

公开(公告)日：2010-05-20

申请号：US12614480

申请日：2009-11-09

Applicant: Albert D. Larue ,  Leonard D. Hazlett ,  Zumao Chen ,  Kurt S. Titmas

Inventor： Albert D. Larue ,  Leonard D. Hazlett ,  Zumao Chen ,  Kurt S. Titmas

IPC: F23D1/00 ,  B05B1/34

CPC classification number: F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2202/00 ,  F23D2900/00018 ,  F23K3/02 ,  Y02E20/344

Abstract: A coal nozzle assembly for a pulverized coal burner includes a diffuser. A flow conditioner also may be used with the assembly. The assembly conditions the coal/air flow before the coal/air flow is introduced to the furnace. The flow conditioner directs the coal into the diffuser where it is swirled to form a fuel rich outer ring disposed about an air rich inner portion before the fuel is delivered to the coal nozzle.

Abstract translation: 用于粉煤燃烧器的煤喷嘴组件包括扩散器。 流量调节器也可以与组件一起使用。 在煤/空气流被引入炉子之前，组件将煤/空气流量调节。 流动调节器将煤引导到扩散器中，在其被旋转之前，以在燃料被输送到煤喷嘴之前形成设置在富含空气的内部周围的富燃料外环。

公开(公告)号：US07665408B2

公开(公告)日：2010-02-23

申请号：US11633489

申请日：2006-12-05

Applicant: Hirofumi Okazaki ,  Masayuki Taniguchi ,  Toshikazu Tsumura ,  Yoshitaka Takahashi ,  Kouji Kuramashi

Inventor： Hirofumi Okazaki ,  Masayuki Taniguchi ,  Toshikazu Tsumura ,  Yoshitaka Takahashi ,  Kouji Kuramashi

IPC: F23D1/00

CPC classification number: F23C6/045 ,  F23C7/004 ,  F23C7/008 ,  F23C2201/20 ,  F23C2900/06041 ,  F23D1/00 ,  F23D2201/10 ,  F23D2201/20 ,  F23D2209/20

Abstract: 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.

Abstract translation: 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：US06367394B1

公开(公告)日：2002-04-09

申请号：US09665072

申请日：2000-09-19

Applicant: Shouzo Kaneko ,  Tadashi Gengo ,  Kouichi Sakamoto ,  Takayoshi Isoda

Inventor： Shouzo Kaneko ,  Tadashi Gengo ,  Kouichi Sakamoto ,  Takayoshi Isoda

IPC: F23L110

CPC classification number: F23C5/06 ,  F23D1/02 ,  F23D2201/101 ,  F23D2201/20

Abstract: A pulverized fuel combustion burner and furnace arrangement has a plurality of air nozzles arranged on a side wall of the furnace for injecting a mixed flow of pulverized fuel and carrier air to establish a flame into the furnace. The plurality of nozzles includes a primary nozzle for injecting the mixed flow into the furnace and a secondary nozzle positioned around the primary nozzle for feeding combustion auxiliary air around the primary nozzle. A pulverized fuel supply pipe feeds the mixed flow to the primary nozzle. The primary nozzle and the pulverized fuel supply pipe are joined at a jointed portion at which the primary nozzle can be pivoted to change a direction for injecting the mixed flow into the furnace. The pulverized fuel supply pipe extends through a windbox, the windbox forming a combustion auxiliary air supply passage around the pulverized fuel supply pipe. A rich/lean flow separator is disposed in a middle portion of the pulverized fuel supply pipe spaced from opposite inner walls of the pulverized fuel supply pipe such that when the mixed flow flows around the rich/lean flow separator, a rich/lean flow concentration distribution is established in which a fuel-rich flow is created at an outer part inside of the pulverized fuel supply pipe and adjacent to the opposite inner walls and a fuel-lean flow is created at an inner part inside of the rich flow and along a center line of the pulverized fuel supply pipe. Flow straightening plates are disposed and positioned in the primary nozzle and the pulverized fuel supply pipe downstream of the rich/lean flow separator so as to maintain the rich/lean flow concentration distribution established by the rich/lean flow separator to the exit of the primary nozzle.

Abstract translation: 粉煤燃烧器和炉装置具有布置在炉的侧壁上的多个空气喷嘴，用于喷射粉煤燃料和载气的混合流以在炉中建立火焰。 多个喷嘴包括用于将混合流注入炉中的主喷嘴和位于主喷嘴周围的辅助喷嘴，用于在主喷嘴周围供给燃烧辅助空气。 粉碎的燃料供给管将混合流供给到主喷嘴。 主喷嘴和粉碎燃料供给管在主喷嘴可枢转的接合部分处连接，以改变将混合流注入炉中的方向。 粉碎的燃料供应管延伸穿过风箱，风箱在粉煤燃料供应管周围形成燃烧辅助空气供应通道。 富煤/贫流分离器设置在粉碎燃料供应管的与粉煤燃料供应管的相对内壁间隔开的中间部分，使得当混合流在富/稀流分离器周围流动时，富/贫流量浓度 建立了在粉煤燃料供给管的内部的外部与相对的内壁相邻地产生富燃料流的分布，并且在富流的内部的内部产生贫燃料流，并且沿着 粉煤燃料供应管的中心线。 流量矫直板被设置并定位在富/贫流分离器下游的主喷嘴和粉碎燃料供应管中，以便将富/稀流分离器确定的浓/稀流浓度分布保持到主/ 喷嘴。

公开(公告)号：US06260491B1

公开(公告)日：2001-07-17

申请号：US09394417

申请日：1999-09-13

Applicant: John Grusha

Inventor： John Grusha

IPC: F23D100

CPC classification number: F23D1/00 ,  F23D2201/101 ,  F23D2201/20

Abstract: A nozzle for feeding combustion maintaining medium into a furnace at high temperature conditions includes a nozzle tip, at least partly protruding into the furnace, and a feeding mechanism for feeding the combustion medium from a source of the medium to the nozzle tip. The nozzle tip includes a mainly open ended outer shell, an air cooling zone, a shroud, and an air channel. The outer shell includes a first end wall portion in flow connection with the feeding mechanism and a second end wall portion protruding into the furnace. The cooling zone is formed on the interior side of at least a portion of the second end wall portion of the outer shell, by providing an air flow along the interior side. The shroud includes a shroud wall portion disposed to cover at least a portion of the first end wall portion of the outer shell. The shroud channel is formed between the shroud wall portion of the shroud and the first end wall portion of the outer shell, for discharging from the shroud channel an air shroud flow along the exterior side of the second end wall portion of the outer shell.

Abstract translation: 用于在高温条件下将燃烧维持介质供给到炉中的喷嘴包括至少部分地突出到炉中的喷嘴尖端和用于将燃烧介质从介质源供给到喷嘴尖端的进给机构。 喷嘴尖端包括主要开放的外壳，空气冷却区，护罩和空气通道。 外壳包括与进给机构流动连接的第一端壁部分和突出到炉中的第二端壁部分。 冷却区通过沿内侧的空气流形成在外壳的第二端壁部分的至少一部分的内侧上。 护罩包括设置成覆盖外壳的第一端壁部分的至少一部分的护罩壁部分。 护罩通道形成在护罩的护罩壁部分和外壳的第一端壁部分之间，用于从护罩通道沿着外壳的第二端壁部分的外侧排出空气护罩流。

公开(公告)号：US06202575B1

公开(公告)日：2001-03-20

申请号：US09252155

申请日：1999-02-18

Applicant: Wesley P. Bauver, II ,  Richard C. LaFlesh ,  John C. Lewis ,  Robert D. Lewis

Inventor： Wesley P. Bauver, II ,  Richard C. LaFlesh ,  John C. Lewis ,  Robert D. Lewis

IPC: F23L900

CPC classification number: F23C5/32 ,  F23D2201/20

Abstract: An air compartment of a corner windbox of a tangential firing system of a fossil fuel-fired furnace for injecting secondary air into the furnace. The air compartment includes a channel portion with an entrance end communicating with an air delivery duct and an exit end communicating via an exit assembly with the furnace opening. The exit assembly includes at least one vane for guiding an air stream and a mounting frame for supporting the vane relative to the channel portion for guiding thereby of an air stream passing from the channel portion through the furnace opening into the furnace. The vane includes a surface portion which intersects the horizontal plane at an acute angle and a pair of opposed transverse edges. The vane and the mounting frame are disposed within the channel portion such that the leading edge of the vane is upstream of the furnace opening.

Abstract translation: 用于将二次空气注入炉中的化石燃料燃烧炉的切向燃烧系统的角风箱的空气室。 空气隔室包括通道部分，入口端与空气输送管道连通，并且出口端通过出口组件与炉口连通。 出口组件包括用于引导空气流的至少一个叶片和用于相对于通道部分支撑叶片的安装框架，从而引导从通道部分通过炉开口进入炉中的空气流。 叶片包括与水平面以锐角相交的表面部分和一对相对的横向边缘。 叶片和安装框架设置在通道部分内，使得叶片的前缘在炉开口的上游。