-
公开(公告)号：US5829369A
公开(公告)日：1998-11-03
申请号：US747319
申请日：1996-11-12
申请人： Jennifer L. Sivy , Larry W. Rodgers , John V. Koslosy , Albert D. LaRue , Keith C. Kaufman , Hamid Sarv
发明人： Jennifer L. Sivy , Larry W. Rodgers , John V. Koslosy , Albert D. LaRue , Keith C. Kaufman , Hamid Sarv
CPC分类号： F23C7/004 , F23D1/00 , F23C2201/20
摘要： A burner having lower emissions and lower unburned fuel losses by implementing a transition zone in a low NO.sub.x burner. The improved burner includes a pulverized fuel transport nozzle surrounded by the transition zone which shields the central oxygen-lean fuel devolatilization zone from the swirling secondary combustion air. The transition zone acts as a buffer between the primary and the secondary air streams to improve the control of near-burner mixing and flame stability by providing limited recirculation regions between primary and secondary air streams. These limited recirculation regions transport evolved NO.sub.x back towards the oxygen-lean fuel pyrolysis zone for reduction to molecular nitrogen. Alternate embodiments include natural gas and fuel oil firing.
摘要翻译： 燃烧器通过在低NOx燃烧器中实现过渡区域而具有较低的排放和较低的未燃燃料损失。 改进的燃烧器包括由过渡区围绕的粉碎的燃料输送喷嘴，其将中心贫氧燃料脱挥发分区域与涡流二次燃烧空气进行屏蔽。 过渡区域充当初级和次级空气流之间的缓冲区，以通过在一级和二级空气流之间提供有限的再循环区域来改善近燃烧器混合和火焰稳定性的控制。 这些有限的再循环区将逸出的NOx转移回贫氧燃料热解区，以还原成分子氮。 替代实施例包括天然气和燃料油燃烧。
-
2.发明授权Low NO.sub.x short flame burner with control of primary air/fuel ratio for NO.sub.x reduction 失效低NOx短火燃烧器控制一次空气/燃料比减少NOx
公开(公告)号：US5697306A
公开(公告)日：1997-12-16
申请号：US789049
申请日：1997-01-28
申请人： Albert D. LaRue , Hamid Sarv
发明人： Albert D. LaRue , Hamid Sarv
CPC分类号： F23D17/005 , F23D1/02 , F23D2201/20
摘要： 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.
摘要翻译： 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：US20070281265A1
公开(公告)日：2007-12-06
申请号：US11444779
申请日：2006-06-01
CPC分类号： F23D1/00 , F23D2900/01001
摘要： 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.
摘要翻译： 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：US07430970B2
公开(公告)日：2008-10-07
申请号：US11171027
申请日：2005-06-30
CPC分类号： F23D1/00 , F23C7/008 , F23C9/003 , F23C2201/20 , F23C2900/06043
摘要： A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NOx emissions by supplying oxygen to the center of the burner flame in as manners so as to create a fuel rich internal combustion zone within the burner flame.
摘要翻译： 提供了用于商业和工业应用的燃烧化石燃料的新型燃烧器装置和方法，其中新燃烧器装置通过以燃烧器火焰的中心供给氧来实现低NO x排放，从而 在燃烧器火焰内形成燃料丰富的内燃区。
-
公开(公告)号：US06386863B1
公开(公告)日：2002-05-14
申请号：US09551066
申请日：2000-04-18
IPC分类号： F23C700
摘要： 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.
摘要翻译： 用于化石燃料燃烧器的空气通道中的复合叶轮（CSV）。 在一个实施例中，CSV是连接到中间板状轨道元件的板状外部和内部叶片元件的多件式结构。 在另一个实施例中，CSV包括至少两个并且可能的三个叶片部分，其相对于彼此以间隔开的横向关系刚性地互连。 如果需要，叶片部分可以是简单的弯曲平面表面，并且可以布置成具有相对于彼此成角度布置的后缘。 可以采用本发明来代替在已知的单和双重配准烧嘴的二次空气通道中发现的扁平旋转叶片。 当以这种方式在单个对位燃烧器中使用时，本发明改变二次空气流动特性，以模拟在双重配准燃烧器中通常发现的那些。
-
公开(公告)号：US5827054A
公开(公告)日：1998-10-27
申请号：US584785
申请日：1996-01-11
摘要： 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：US08113824B2
公开(公告)日：2012-02-14
申请号：US11444779
申请日：2006-06-01
IPC分类号： F23M9/00
CPC分类号： F23D1/00 , F23D2900/01001
摘要： 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.
摘要翻译： 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：US06146130A
公开(公告)日：2000-11-14
申请号：US178855
申请日：1998-10-26
摘要： 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.
-
9.发明授权公开(公告)号：US06951454B2
公开(公告)日：2005-10-04
申请号：US10443287
申请日：2003-05-21
申请人： Hamid Sarv , Ronald C. Lenzer
发明人： Hamid Sarv , Ronald C. Lenzer
CPC分类号： F23D1/00 , F23D14/24 , F23D14/84 , F23D17/005
摘要： A dual fuel burner including an elongated supply pipe and a gas injector for a boiler furnace having a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise or counter-clockwise, to impart a swirling motion to gaseous fuel exiting the injector through the openings. A first sleeve member is concentrically spaced about the supply pipe and the gas injector to form an inner annular passageway for conveying a mixture of primary air and pulverized coal to the furnace combustion zone. A second sleeve member is concentrically spaced about the first sleeve member to form an outer annular passageway for conveying secondary air to the furnace combustion zone, and a plurality of circumferentially spaced vanes mounted within the outer annular passageway for inducing a swirling motion to the secondary air discharging from the outer annular passageway into the furnace combustion zone.
摘要翻译： 一种双燃料燃烧器，包括细长的供料管和用于锅炉炉的气体注射器，其具有围绕中心开口的多个周边开口。 周边开口径向远离气体注射器的纵向轴线，并且还顺时针或逆时针方向倾斜，以通过开口向出射喷射器的气态燃料施加涡旋运动。 第一套筒构件围绕供应管和气体注入器同心地间隔开以形成用于将一次空气和粉煤的混合物输送到炉燃烧区的内部环形通道。 第二套筒构件围绕第一套筒构件同心地隔开以形成用于将二次空气输送到炉燃烧区的外部环形通道，以及安装在外部环形通道内的多个周向间隔开的叶片，用于引起对二次空气的旋转运动 从外部环形通道排放到炉子燃烧区域。
-
公开(公告)号：US5807094A
公开(公告)日：1998-09-15
申请号：US908550
申请日：1997-08-08
申请人： Hamid Sarv
发明人： Hamid Sarv
摘要： An air premixed natural gas burner having reduced thermal and prompt NO.sub.x emissions employs a central, cylindrical core chamber and an outer annular chamber separated by a hollow barrel having a plurality of gas spuds at a front end of the burner adjacent to a burner throat. The plurality of gas spuds introduces natural gas into a core chamber air flow passing through a fixed swirler and controlled by a sliding air flow damper associated with the central, cylindrical core chamber. A reduced air/fuel stoichiometric ratio (of approximately 0.6) is preferably maintained at an outlet of the central, cylindrical core chamber. The balance of the combustion air is provided through the outer annular chamber to maintain an overall or cumulative burner stoichiometric ratio of approximately 1.05.
摘要翻译： 具有减少的热和迅速的NOx排放的空气预混合天然气燃烧器采用中心的圆柱形核心室和外部环形室，所述中央圆柱形核心室和外部环形室由中空筒分隔，所述中空筒在燃烧器喉口附近在燃烧器前端处具有多个气体柱塞。 多个气体柱塞将天然气引入通过固定旋流器的核心室空气流中，并由与中心圆柱形核心室相关联的滑动空气流动阻尼器控制。 优选地，在中心圆柱形核心室的出口处保持降低的空气/燃料化学计量比（约0.6）。 燃烧空气的平衡通过外部环形室提供，以保持总体或累积的燃烧器化学计量比约为1.05。
-
-
-
-
-
-
-
-
-
搜索结果
19 条记录 (耗时 0.031 秒)
