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    Low emission U-fired boiler combustion system
    41.
    发明授权
    Low emission U-fired boiler combustion system 失效
    低排放型燃煤锅炉燃烧系统

    公开(公告)号：US6058855A

    公开(公告)日：2000-05-09

    申请号：US119097

    申请日：1998-07-20

    Applicant: Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

    Inventor： Terence Ake ,  Roderick Beittel ,  Robert A. Lisauskas ,  Eric Reicker

    IPC: F23C3/00 ,  F23C6/04 ,  F23C7/00 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23L9/04 ,  F23G7/06

    CPC classification number: F23L9/04 ,  F23C3/00 ,  F23C6/042 ,  F23C7/006 ,  F23C9/06 ,  F23D1/00 ,  F23D17/00 ,  F23C2201/101 ,  F23C2201/301 ,  F23D2201/20

    Abstract: At least one main combustion chamber contains at least one pulverized coal burner. Each pulverized coal burner is operatively arranged for minimizing NO.sub.X production and for maintaining a predetermined operating temperature to liquefy ash within the combustion chamber. The combustion chamber includes a slag drain for removing slag from the combustion chamber. A slag screen is positioned in a generally U-shaped furnace flow pattern. The slag screen is positioned between the combustion chamber and a radiant furnace. The radiant furnace includes a reburning zone for in-furnace No.sub.X reduction. The reburning zone extends between a reburning fuel injection source and at least one overfire air injection port for injecting air.

    Abstract translation: 至少一个主燃烧室包含至少一个粉煤燃烧器。 每个粉煤燃烧器可操作地布置成用于使NO x产生最小化并保持预定的操作温度以使燃烧室内的液化灰。 燃烧室包括用于从燃烧室除去渣的炉渣排出口。 炉渣筛位于大致U形炉流程图中。 炉渣筛位于燃烧室和辐射炉之间。 辐射炉包括用于炉内NoX还原的再燃烧区域。 再燃烧区域在再燃燃料喷射源和至少一个用于喷射空气的过火空气喷射端口之间延伸。

    Method and apparatus for the reduction of nox generation during coal dust combustion
    42.
    发明授权
    Method and apparatus for the reduction of nox generation during coal dust combustion 失效
    减少煤粉燃烧过程中的nox产生的方法和装置

    公开(公告)号：US5832847A

    公开(公告)日：1998-11-10

    申请号：US666077

    申请日：1996-06-19

    Applicant: Alfons Leisse ,  Michael Streffing

    Inventor： Alfons Leisse ,  Michael Streffing

    IPC: F23C99/00 ,  F23D1/00 ,  F23D1/02 ,  F23D17/00 ,  F23D14/00 ,  F23L1/00

    CPC classification number: F23D17/005 ,  F23D1/00 ,  F23D1/02 ,  F23C2201/20 ,  F23C2202/10 ,  F23D2201/20

    Abstract: The process for combustion of coal dust with combustion air in burners and for reducing the production of NO.sub.x during the combustion. Combustion air is fed to the burners in form of primary air and secondary air. The burners are supplied coal dust through the primary air in a mixture of coal dust and primary air. A primary gas is generated with combustible gaseous components from the mixture of coal dust and primary air, through pyrolysis of the coal dust in the ignition region of the burners. In the ignition region, there is lowered the mean ratio of oxygen components in the primary gas to the oxygen amount required to burn freely released combustible gaseous components of the primary gas by reducing the oxygen component in the primary gas and/or injecting the primary gas with a combustible external gas.

    Abstract translation: 燃烧时燃烧空气的煤尘燃烧过程和燃烧过程中NOx的产生减少。 燃烧空气以一次空气和二次空气的形式供给燃烧器。 燃烧器通过一次空气以煤尘和一次空气的混合物供应煤尘。 主燃气由煤粉和一次空气混合物产生的可燃性气体成分，通过燃烧器点火区域的煤尘进行热解。 在点火区域中，通过减少初级气体中的氧成分和/或注入主气体，使一次气体中的氧成分平均比降低到燃烧自由释放的一次气体的可燃性气体成分所需的氧量 与可燃的外部气体。

    Cyclone furnace combustion system and method utilizing a coal burner
    43.
    发明授权
    Cyclone furnace combustion system and method utilizing a coal burner 失效
    旋风炉燃烧系统及利用煤燃烧器的方法

    公开(公告)号：US5765488A

    公开(公告)日：1998-06-16

    申请号：US600657

    申请日：1996-02-13

    Applicant: Joel Vatsky

    Inventor： Joel Vatsky

    IPC: F23C3/00 ,  F23K3/02 ,  F23C1/10

    CPC classification number: F23K3/02 ,  F23C3/008 ,  F23D2201/20 ,  F23K2201/30 ,  F23K2201/501

    Abstract: A cyclone furnace combustion system and method in which a burner is mounted relative to a cyclone furnace for discharging a relatively fine particulate fuel in an axial direction into the furnace. Relatively coarse particulate fuel is discharged into the furnace in a tangential relationship thereto and air is provided in the furnace to support combustion of the fuels.

    Abstract translation: 一种旋风炉燃烧系统和方法，其中相对于旋风炉安装燃烧器，用于将相对细的颗粒燃料沿轴向排放到炉中。 相对较粗的颗粒燃料以与其相切的关系排放到炉中，并且在炉中提供空气以支持燃料的燃烧。

    Fuel injector for use in a furnace
    44.
    发明授权
    Fuel injector for use in a furnace 失效
    用于炉子的燃油喷射器

    公开(公告)号：US5762007A

    公开(公告)日：1998-06-09

    申请号：US771965

    申请日：1996-12-23

    Applicant: Joel Vatsky

    Inventor： Joel Vatsky

    IPC: F23D1/02

    CPC classification number: F23D1/02 ,  F23D2201/20 ,  F23D2201/30

    Abstract: A fuel injector for use in a furnace is provided. The fuel injector may include a generally tapered configuration and a nozzle having a plurality of open sections, which preferably have an elliptical configuration, arranged at the output for providing rich segregated fuel streams.

    Abstract translation: 提供一种用于炉中的燃料喷射器。 燃料喷射器可以包括大致锥形的构造和具有多个开口部分的喷嘴，其优选地具有椭圆形构造，布置在输出处以提供富分离的燃料流。

    Split flame burner for reducing NOx formation
    45.
    发明授权
    Split flame burner for reducing NOx formation 失效
    用于减少NOx形成的分火焰燃烧器

    公开(公告)号：US5568777A

    公开(公告)日：1996-10-29

    申请号：US359800

    申请日：1994-12-20

    Applicant: Bernard P. Breen ,  John P. Bionda, Jr. ,  James E. Gabrielson ,  Anthony Hallo

    Inventor： Bernard P. Breen ,  John P. Bionda, Jr. ,  James E. Gabrielson ,  Anthony Hallo

    IPC: F23D1/00 ,  F23C1/10

    CPC classification number: F23D1/00 ,  F23D2201/10 ,  F23D2201/20

    Abstract: An improved pulverized coal burner that reduces the formation of nitrogen oxides. The coal burner includes fuel splitters that separate a mixture of primary air and coal into a plurality of streams while the mixture is discharged through a diffuser having a plurality of partially open areas and a plurality of blocked areas. After passing through the diffuser, the plurality of streams are discharged into a furnace to be burned. The plurality of partially open areas and blocked areas are created by removing sections of the diffuser and replacing the removed sections with fuel splitters. Creation of these discrete streams delays mixing with secondary air. Because primary air is supplied in sub-stoichiometric quantities, the coal in these split streams will be burned under fuel-rich conditions for the first 100 to 200 milliseconds of combustion, until the delayed mixing of secondary air occurs. Combustion in a fuel-rich environment retards formation of nitrogen oxides in two ways. First, nitrogen that is part of the volatile matter that is evolved during the early stages of combustion will tend to form molecular nitrogen rather than react with oxygen to form nitrogen oxides. Second, an oxygen deficiency will reduce formation of nitrogen oxides from atmospheric nitrogen.

    Abstract translation: 一种改进的粉煤燃烧器，可减少氮氧化物的形成。 煤燃烧器包括燃料分配器，其将一次空气和煤的混合物分离成多个流，同时通过具有多个部分开放区域和多个阻塞区域的扩散器排出混合物。 在通过扩散器之后，将多个流排出到待燃烧的炉中。 通过去除扩散器的部分并且用燃料分离器代替去除的部分来产生多个部分开放区域和阻塞区域。 这些离散流的创建延迟了与二次空气的混合。 由于一次空气以亚化学计量的方式供应，这些分流中的煤将在富燃料条件下燃烧第一个100至200毫秒的燃烧，直到发生二次空气的延迟混合。 在富含燃料的环境中的燃烧有两种方式阻碍了氮氧化物的形成。 首先，作为在燃烧的早期阶段演化的挥发性物质的一部分的氮将倾向于形成分子氮而不是与氧反应形成氮氧化物。 第二，缺氧会减少氮氧化物从大气氮的形成。

    Burner, System, and Method for Hydrogen-Enhanced Pulverized Coal Ignition
    46.
    发明公开
    Burner, System, and Method for Hydrogen-Enhanced Pulverized Coal Ignition 审中-公开

    公开(公告)号：US20240019118A1

    公开(公告)日：2024-01-18

    申请号：US17863228

    申请日：2022-07-12

    Applicant: Air Products and Chemicals, Inc.

    Inventor： Mark Daniel D'Agostini

    IPC: F23C9/00 ,  F23D1/00

    CPC classification number: F23C9/003 ,  F23D1/00 ,  F23D2201/20 ,  F23C2900/9901

    Abstract: A burner including a first pulverized coal entrained fluid flow conduit; an inner hydrogen conduit; and a hydrogen oxidant conduit positioned between the first pulverized coal entrained fluid flow conduit and the inner hydrogen conduit; an outlet of the inner hydrogen conduit positioned a first distance from an outlet of the hydrogen oxidant conduit such that hydrogen output from the outlet of the inner hydrogen conduit passes through a portion of the hydrogen oxidant conduit to the outlet of the hydrogen oxidant conduit; and the outlet of the hydrogen oxidant conduit being a second distance from an outlet of the first pulverized coal entrained fluid flow conduit such that the hydrogen and the hydrogen oxidant output from the outlet of the hydrogen oxidant conduit passes through a portion of the first pulverized coal entrained fluid flow conduit for being output from the burner.

    PULVERIZED FUEL-OXYGEN BURNER
    47.
    发明申请
    PULVERIZED FUEL-OXYGEN BURNER 审中-公开

    公开(公告)号：US20170343212A1

    公开(公告)日：2017-11-30

    申请号：US15679944

    申请日：2017-08-17

    Applicant: Honeywell International Inc.

    Inventor： Curtis Taylor ,  Brad Patterson ,  Jayson Perdue

    IPC: F23L7/00 ,  F23D1/00 ,  F23C6/04

    CPC classification number: F23L7/007 ,  F23C6/045 ,  F23C2201/20 ,  F23D1/00 ,  F23D2201/00 ,  F23D2201/20 ,  F23D2900/00006 ,  Y02E20/344

    Abstract: A burner assembly combines oxygen and fuel to produce a flame. The burner assembly includes an oxygen supply tube adapted to receive a stream of oxygen and a solid fuel conduit arranged to extend through the oxygen tube to convey a stream of fluidized, pulverized, solid fuel into a flame chamber. Oxygen flowing through the oxygen supply tube passes generally tangentially through a first set of oxygen-injection holes formed in the solid fuel conduit and off-tangentially from a second set of oxygen-injection holes formed in the solid fuel conduit and then mixes with fluidized, pulverized, solid fuel passing through the solid fuel conduit to create an oxygen-fuel mixture in a downstream portion of the solid fuel conduit. This mixture is discharged into a flame chamber and ignited in the flame chamber to produce a flame.

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