公开(公告)号：US08991323B2

公开(公告)日：2015-03-31

申请号：US12614480

申请日：2009-11-09

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

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

IPC: F23D1/00 ,  F23K3/02

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：US5697306A

公开(公告)日：1997-12-16

申请号：US789049

申请日：1997-01-28

Applicant: Albert D. LaRue ,  Hamid Sarv

Inventor： Albert D. LaRue ,  Hamid Sarv

IPC: F23D1/02 ,  F23D17/00 ,  F23C1/12

CPC classification number: F23D17/005 ,  F23D1/02 ,  F23D2201/20

Abstract: A burner for the combustion of a pulverized coal plus primary air mixture includes a nozzle pipe having an inlet for receiving a pulverized coal plus primary air mixture and an outlet for discharging same. A hollow plug extends axially within the nozzle pipe and defines an annular space between the plug and the nozzle pipe for conveying the pulverized coal plus primary air mixture therethrough. The hollow plug is axially moveable within the nozzle pipe. A variable amount of core air is supplied into the hollow plug so that it mixes with the primary air plus pulverized coal mixture at an outlet of the burner to vary the PA/PC ratio and maintain a desired primary air to primary coal ratio at the outlet of the burner. Natural gas can also be supplied into the hollow plug as a supplemental fuel for cofiring at the outlet end of the burner. The amount of core air supplied is based upon (1) the coal flow rate being provided to the burner, in lb/hr, and (2) the percent volatile matter content (%VM) in the coal being burned.

Abstract translation: 用于粉煤加一次空气混合物的燃烧的燃烧器包括具有用于接收粉煤加一次空气混合物的入口和用于将其排出的出口的喷嘴管。 中空塞在喷嘴管内轴向延伸，并且在塞子和喷嘴管之间限定一个环形空间，用于将粉煤加一次空气混合物输送通过。 中空塞在喷嘴管内可轴向移动。 将可变量的核心空气供应到中空塞中，使其在燃烧器的出口处与一次空气加粉煤混合物混合以改变PA / PC比，并在出口处保持所需的初级空气至初级煤比 的燃烧器。 也可以将天然气作为补充燃料供应到中空塞中，以在燃烧器的出口端进行共烧。 提供的核心空气的量基于（1）以lb / hr提供给燃烧器的煤流速，和（2）被燃烧的煤中的挥发性物质含量百分比（％VM）。

公开(公告)号：US5329866A

公开(公告)日：1994-07-19

申请号：US116312

申请日：1993-09-03

Applicant: Albert D. LaRue

Inventor： Albert D. LaRue

IPC: F23C1/12 ,  F23C7/02 ,  F23C99/00 ,  F23D1/00

CPC classification number: F23C7/02 ,  F23D1/00

Abstract: A burner and port combination for the combustion of a pulverized coal fuel plus air mixture comprises a throat and a burner nozzle positioned at a central area of the throat. The burner nozzle has an inlet for receiving the pulverized coal fuel plus air mixture and an outlet for discharging the pulverized coal fuel plus air mixture. A secondary air tube is positioned laterally adjacent the burner nozzle at each lateral side of the nozzle in the throat for providing a first portion of a secondary air to the throat. A plurality of vanes are positioned at an upper portion of the throat above the burner nozzle and the tubes and at a lower portion of the throat below the burner nozzle tubes for deflecting a second portion of the secondary air from the burner nozzle.

Abstract translation: 用于粉煤燃料加空气混合物的燃烧的燃烧器和端口组合包括位于喉部的中心区域处的喉部和燃烧器喷嘴。 燃烧器喷嘴具有用于接收粉煤燃料加空气混合物的入口和用于排出粉煤燃料加空气混合物的出口。 二次空气管在喉部的喷嘴的每个侧面处横向邻近燃烧器喷嘴定位，以将第二部分空气提供给喉部。 多个叶片位于燃烧器喷嘴和管子上方的喉部的上部，并且位于燃烧器喷嘴管下方的喉部的下部，用于从燃烧器喷嘴偏转第二部分二次空气。

公开(公告)号：US4915619A

公开(公告)日：1990-04-10

申请号：US260435

申请日：1988-10-20

Applicant: Albert D. LaRue

Inventor： Albert D. LaRue

IPC: F23D14/22 ,  F23D17/00

CPC classification number: F23D17/00 ,  Y02E20/344

Abstract: An improved burner having a very particularly designed gas element for the combustion of coal, oil or gas places a plurality of retractable and rotatable gas elements in close proximity to the outlet end of a tubular burner nozzle of the burner which are shielded from combustion air provided around the tubular burner nozzle by a flame stabilizing ring having a plurality of openings adapted to closely receive each of the plurality of retractable and rotatable gas elements. Eddies produced by the flame stabilizing ring create a low oxygen/fuel rich flame resulting in reduced NO.sub.x formation.

Abstract translation: 具有非常特别设计的用于煤，油或气体燃烧的气体元件的改进的燃烧器将多个可缩回和可旋转的气体元件放置在靠近燃烧器的管状燃烧器喷嘴的出口端，所述燃烧器的管状燃烧器喷嘴被屏蔽以提供燃烧空气 通过具有多个开口的火焰稳定环围绕管状燃烧器喷嘴，适于紧密接收多个可收回和可旋转的气体元件中的每一个。 由火焰稳定环产生的酸形成低氧/富燃料火焰，导致NOx形成减少。

公开(公告)号：US4836772A

公开(公告)日：1989-06-06

申请号：US190734

申请日：1988-05-05

Applicant: Albert D. LaRue

Inventor： Albert D. LaRue

IPC: F23D17/00

CPC classification number: F23D17/00 ,  Y02E20/344

Abstract: An improved burner for the combustion of coal, oil or gas places a plurality of retractable and rotatable gas elements in close proximity to the outlet end of a tubular burner nozzle of the burner which are shielded from combustion air provided around the tubular burner nozzle by a flame stabilizing ring having a plurality of openings adapted to closely receive each of the plurality of retractable and rotatable gas elements. Eddies produced by the flame stabilizing ring create a low oxygen/fuel rich flame resulting in reduced NO.sub.x formation.

Abstract translation: 用于煤，油或气体的燃烧的改进的燃烧器将多个可缩回和可旋转的气体元件放置在靠近燃烧器的管状燃烧器喷嘴的出口端处，该气体元件与设置在管状燃烧器喷嘴周围的燃烧空气屏蔽 火焰稳定环具有适于紧密地接收多个可收回和可旋转的气体元件中的每一个的多个开口。 由火焰稳定环产生的酸形成低氧/富燃料火焰，导致NOx形成减少。

公开(公告)号：US4654001A

公开(公告)日：1987-03-31

申请号：US822456

申请日：1986-01-27

Applicant: Albert D. LaRue

Inventor： Albert D. LaRue

IPC: F23D1/00 ,  F23D14/62

CPC classification number: F23D1/00

Abstract: A combustion method and burner nozzle system having a DeNO.sub.x Stabilizer concentrically secured within a burner nozzle such that the fuel stream is separated into an outer fuel-rich stream and an inner fuel-lean stream. The outer fuel-rich stream passes around the exterior of the DeNO.sub.x Stabilizer where its flow area is increased thereby decreasing its velocity before it is discharged from the burner nozzle. Concurrently, the inner fuel-lean stream passes through the DeNO.sub.x Stabilizer where its flow area is reduced thereby increasing its velocity before this stream is discharged from the burner nozzle central to the slower fuel-rich stream. Mixing members interior of the burner nozzle further mix the fuel-rich stream before exiting the nozzle.

Abstract translation: 一种燃烧方法和燃烧器喷嘴系统，其具有同心地固定在燃烧器喷嘴内的DeNOx稳定器，使得燃料流被分离成外部富燃料流和贫燃料流。 外部富燃料流通过DeNOx稳定器的外部，其流动面积增加，从而在从燃烧器喷嘴排出之前降低其速度。 同时，内贫燃料流通过DeNOx稳定器，其中其流动面积减小，从而在该流从燃烧器喷嘴中心排出到较慢的富燃料流之前增加其速度。 燃烧器喷嘴的混合构件内部在离开喷嘴之前进一步混合富燃料流。

公开(公告)号：US08113824B2

公开(公告)日：2012-02-14

申请号：US11444779

申请日：2006-06-01

Applicant: Hamid Sarv ,  Albert D. LaRue ,  William J. Kahle ,  Alan N. Sayre ,  Daniel R. Rowley

Inventor： Hamid Sarv ,  Albert D. LaRue ,  William J. Kahle ,  Alan N. Sayre ,  Daniel R. Rowley

IPC: F23M9/00

CPC classification number: F23D1/00 ,  F23D2900/01001

Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.

Abstract translation: 提供了大直径的中间空气分离锥，用于通过在燃烧器出口扩展内部再循环区域（IRZ）来减少燃烧器操作期间的NOx。 中间空气分离锥具有一个短的圆柱形前缘，它配合在燃烧器的外部空气区域。 中间空气分离锥根据空气分离锥体相对于外部空气区域的位置将外部空气区域二次空气流分成两个相等或不相等的流，并使一部分二次空气流径向向外偏转。 由于空气分离锥的径向位置距离燃烧器中心线更远，因此IRZ尺寸扩大，NOx排放最小化。

公开(公告)号：US07624707B2

公开(公告)日：2009-12-01

申请号：US10767978

申请日：2004-01-29

Applicant: Albert D. LaRue

Inventor： Albert D. LaRue

IPC: F23D1/00

CPC classification number: F23L9/02

Abstract: An over fire air (OFA) port arrangement for a pulverized coal-fired boiler or furnace has at least one OFA port through each of the sidewalls for injecting OFA to increase residence time for each burner level. Plural OFA ports may be employed, staggered both vertically and horizontally to effectively deliver over fire air to the burner flames at the appropriate time and location to most efficiently reduce the formation of fuel NOx. OFA port configurations for both single-wall and opposed-wall fired furnaces and boilers are provided.

Abstract translation: 用于粉煤燃烧锅炉或炉的过火空气（OFA）端口布置具有通过每个侧壁的至少一个OFA端口，用于喷射OFA以增加每个燃烧器水平的停留时间。 可以使用多个OFA端口，其在垂直和水平方向上交错，以在适当的时间和位置上有效地将燃烧空气传递到燃烧器火焰，以最有效地减少燃料NOx的形成。 提供了用于单壁和对壁式燃烧炉和锅炉的OFA端口配置。

公开(公告)号：US06146130A

公开(公告)日：2000-11-14

申请号：US178855

申请日：1998-10-26

Applicant: Hamid Sarv ,  Jeffrey A. LaRose ,  Albert D. LaRue ,  Peter W. Waanders

Inventor： Hamid Sarv ,  Jeffrey A. LaRose ,  Albert D. LaRue ,  Peter W. Waanders

IPC: F23C7/00 ,  F23D1/00 ,  F23M9/00

CPC classification number: F23C7/004 ,  F23D1/00

Abstract: A compound spin vane (CSV) for use in an air passage of a fossil fuel-fired burner. In one embodiment, the CSV is a multi-piece construction of platelike outer and inner vane elements connected to an intermediate platelike rail element. In another embodiment, the CSV includes at least two and possibly three vane portions, rigidly interconnected in spaced lateral relationship with respect to each other. If desired, the vane portions may be simple, curved planar surfaces, and may be arranged with trailing edges arranged at angles with respect to each other. The invention may be employed as a replacement for flat spin vanes found in secondary air passages of known single and dual register burners. When used in such manner in a single register burner, the invention changes secondary air flow characteristics so as to mimic those commonly found in a dual register burner.

公开(公告)号：US20070281265A1

公开(公告)日：2007-12-06

申请号：US11444779

申请日：2006-06-01

Applicant: Hamid Sarv ,  Albert D. LaRue ,  William J. Kahle ,  Alan N. Sayre ,  Daniel R. Rowley

Inventor： Hamid Sarv ,  Albert D. LaRue ,  William J. Kahle ,  Alan N. Sayre ,  Daniel R. Rowley

IPC: F23C7/00 ,  F23C1/10 ,  F23C1/12

CPC classification number: F23D1/00 ,  F23D2900/01001

Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.

Abstract translation: 提供了大直径的中间空气分离锥，用于通过在燃烧器出口扩展内部再循环区域（IRZ）来减少燃烧器操作期间的NOx。 中间空气分离锥具有一个短的圆柱形前缘，它配合在燃烧器的外部空气区域。 中间空气分离锥根据空气分离锥体相对于外部空气区域的位置将外部空气区域二次空气流分成两个相等或不相等的流，并使一部分二次空气流径向向外偏转。 由于空气分离锥的径向位置距离燃烧器中心线更远，因此IRZ尺寸扩大，NOx排放最小化。