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1.发明授权Method of reducing the nox-emissions during combustion of nitrogen-containing fuels 失效减少含氮燃料燃烧过程中的排放量的方法
公开(公告)号：US4790743A
公开(公告)日：1988-12-13
申请号：US937346
申请日：1986-12-03
CPC分类号： F23R3/34 , F23C6/047 , F23C2201/30
摘要： A method of reducing the NO.sub.x --emissions during combustion of nitrogen-containing fuels via burner units each including a primary burner and being arranged in a wall of a closed combustion chamber; fuel and air for combustion are supplied to the burner flame in stages as partial flows via delivery means which are separate from one another. With a number of primary burners being arranged one above the other the method is carried out in three steps: feeding coal dust along with its carrier gas to the primary burner and generating a primary flame zone having a strong internal back flow region and burning the coal dust under fuel-rich conditions, feeding reduction fuel into the combustion chamber and generating a secondary flame zone in the vicinity of the primary flame zone and being operated under more-fuel-rich conditions than the primary flame zone, feeding reduction fuel into the combustion chamber and generating a secondary flame zone in the vicinity of the primary flame zone and being operated under more-fuel-rich conditions than the primary flame zone, and feeding state air into the combustion chamber of the secondary flame zone and being operated under fuel lean conditions.
摘要翻译： 一种通过燃烧器单元减少含氮燃料燃烧过程中的NOx排放的方法，每个燃烧器单元包括主燃烧器并且布置在封闭的燃烧室的壁中; 用于燃烧的燃料和空气通过彼此分离的输送装置的分段供给到燃烧器火焰。 多个主燃烧器一个上下排列，该方法分三个步骤进行：将煤尘与其载气一起送入主燃烧器并产生具有强内部后流区域的主要火焰区域并燃烧煤 在燃料丰富的条件下的灰尘，将还原燃料送入燃烧室并在主火焰区附近产生二次火焰区，并在比主火焰区更富燃料的条件下运行，将还原燃料送入燃烧 并且在主火焰区域附近产生二次火焰区域，并且在比主火焰区域更富燃料的条件下运行，并且将状态空气供给到二次火焰区域的燃烧室中并且在燃料稀薄 条件。
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2.发明授权Method of preparing ignition fuel pursuant to flow dynamics from a primary fuel flow for a pulverized fuel pilot light 失效根据来自粉煤燃料引燃灯的主燃料流的流动动力学制备点燃燃料的方法
公开(公告)号：US4426938A
公开(公告)日：1984-01-24
申请号：US348251
申请日：1982-02-12
CPC分类号： F23K3/02
摘要： A method of igniting a pulverized-coal annular burner flame having an internal back flow region, with the ignition energy being introduced centrally into the interior of the back flow region of the pulverized-coal annular burner flame. The ignition energy for the annular burner flame is furnished by an ignited pulverized-fuel igniting flame or pilot light, which is operated with pulverized fuel having a different coarseness and/or consistency than does the primary fuel. Pulverous ignition fuel is withdrawn from the conduit of the primary fuel stream after an existing pulverizing plant at a location which is advantageous with regard to flow dynamics. The ignition fuel is withdrawn by means of a withdrawal device which is capable of being shut off, with the withdrawal opening thereof being directed in the direction of the primary fuel flow.
摘要翻译： 一种点燃具有内部回流区域的粉煤环形燃烧器火焰的方法，其中点燃能量集中地引入到粉煤环形燃烧器火焰的后部流动区域的内部。 用于环形燃烧器火焰的点火能量由点燃的粉碎燃料点燃火焰或引燃灯提供，该燃烧器或引燃灯与具有与初级燃料不同的粗糙度和/或稠度的粉碎燃料操作。 在现有的粉碎设备之后，在关于流动动力学有利的位置，从主要燃料流的导管中抽出燃烧的点燃燃料。 点火燃料借助于能够被切断的取出装置取出，其抽出开口被引向主要燃料流的方向。
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3.发明授权Method of preparing pulverized fuel withdrawn from a primary fuel flow for a pulverized fuel pilot light by means of a sifter device or a supplemental pulverizing plant 失效通过筛分装置或辅助粉碎设备从粉煤燃料引燃灯的主要燃料流中排出的粉化燃料的方法
公开(公告)号：US4436038A
公开(公告)日：1984-03-13
申请号：US348252
申请日：1982-02-12
CPC分类号： F23K3/02
摘要： A method of igniting a pulverized-coal annular burner flame having an internal back flow region, with the ignition energy being introduced centrally into the interior of the back flow region of the pulverized-coal annular burner flame. The ignition energy for the annular burner flame is furnished by an ignited pulverous fuel igniting flame or pilot light, which is operated with pulverous fuel having a different coarseness and/or consistency than does the primary fuel. The pulverous fuel, which is to be prepared for supplying a pulverous fuel pilot light, is withdrawn from the conduit of the primary fuel after an existing pulverizing plant. The pulverized fuel is withdrawn by means of a withdrawal device which is capable of being shut off, with the removal opening thereof being directed counter to the direction of the primary fuel flow.
摘要翻译： 一种点燃具有内部回流区域的粉煤环形燃烧器火焰的方法，其中点燃能量集中地引入到粉煤环形燃烧器火焰的后部流动区域的内部。 用于环形燃烧器火焰的点燃能量由点燃的火焰或引燃灯引燃的粉末燃料提供，该火焰或引燃灯与具有与初级燃料不同的粗糙度和/或稠度的粉状燃料操作。 在现有的粉碎设备之后，将从准备用于供应粉状燃料指示灯的粉末燃料从主要燃料的导管中取出。 粉碎的燃料通过能够被切断的取出装置取出，其拆卸开口与主燃料流的方向相反。
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公开(公告)号：US4810186A
公开(公告)日：1989-03-07
申请号：US903987
申请日：1986-09-04
CPC分类号： F23C6/047 , F23C5/32 , F23C2201/101
摘要： A method and firing equipment for burning solid, liquid, or gaseous fuels, especially pulverized coal. The method includes the steps of tangentially introducing main fuel via main burners into a combustion chamber, where the fuel is burned, introducing reducing fuel via reduction burners into the combustion chamber to reduce the nitrogen oxides produced during the combustion of the main fuel, with the reducing fuel being burned under partial stoichiometric conditions, and, to ensure the burning-out of the fuel introduced into the combustion chamber, introducing burn-air above the feed of the main fuel and the reducing fuel, with a helically rising flow being provided in the combustion chamber. The reducing fuel of a given reduction burner is mixed, at a given distance from the opening of the associated main burner, with the curved afflux leaving that main burner for helical flow about the center of the combustion chamber.
摘要翻译： 一种用于燃烧固体，液体或气体燃料，特别是煤粉的方法和燃烧设备。 该方法包括以下步骤：将主燃料通过主燃烧器切向引入到燃烧室中，其中燃料被燃烧，通过还原燃烧器将还原燃料引入燃烧室中以减少主燃料燃烧期间产生的氮氧化物， 减少在部分化学计量条件下燃烧的燃料，并且为了确保引入燃烧室的燃料燃烧，在主燃料和还原燃料的进料上方引入燃烧空气，其中提供螺旋形上升的流动 燃烧室。 给定的还原燃烧器的还原燃料在相关联的主燃烧器的开口距离给定距离处与弯曲的流体相混合，离开该主燃烧器用于围绕燃烧室的中心的螺旋流。
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