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公开(公告)号：US20130203003A1
公开(公告)日：2013-08-08
申请号：US13571424
申请日：2012-08-10
摘要： A method delivers fuel gas to a furnace combustion chamber from a premix burner having a reaction zone with an outlet to the furnace combustion chamber. This includes the steps of injecting a premix of primary fuel gas and combustion air into the reaction zone, and combusting the premix to provide combustion products including vitiated combustion air in the reaction zone. Further steps include injecting staged fuel gas into the reaction zone separately from the premix, discharging the staged fuel gas and vitiated combustion air from the reaction zone through the outlet to the furnace combustion chamber, and combusting the staged fuel gas and vitiated combustion air in the furnace combustion chamber. This enables low NOx combustion in the furnace combustion chamber to be achieved as a result of interacting the staged fuel gas with the vitiated combustion air in the reaction zone.
摘要翻译： 一种方法是将燃料气体从具有与出口到反应炉燃烧室的反应区的预混燃烧器送入炉燃烧室。 这包括将初级燃料气体和燃烧空气的预混合物注入反应区，并且将预混物燃烧以在反应区中提供包括残余燃烧空气的燃烧产物的步骤。 进一步的步骤包括将分级燃料气体与预混物分开注入反应区域，将分级燃料气体和残留燃烧空气从反应区通过出口排出到炉燃烧室，并将分级燃料气体和残余燃烧空气燃烧在 炉燃烧室。 这使得能够通过使分级燃料气体与反应区中的残留燃烧空气相互作用来实现炉燃烧室中的低NOx燃烧。
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公开(公告)号：US20130196277A1
公开(公告)日：2013-08-01
申请号：US13568194
申请日：2012-08-07
CPC分类号： F23L15/02 , C21B9/14 , F27D17/00 , F27D17/004 , F27D19/00 , F27D21/00 , F27D99/0033 , F27D2017/007 , F27D2019/0009 , F27D2019/0031 , F27D2019/0034 , F27D2021/0007 , Y02E20/348 , Y02P10/34
摘要： A flow of air is provided from a hot air main into a combustion chamber at a time when a burner is firing into the combustion chamber to heat a bed of regenerative media. The flow of air into the combustion chamber helps to keep products of combustion from flowing into the hot air main. In preferred embodiments, sensors sense pressure in the combustion chamber and the hot air main. A controller shifts a valve back and forth within a range of open conditions to regulate the flow of air in response to the sensed pressures.
摘要翻译： 当燃烧器燃烧到燃烧室中以加热再生介质床时，从热空气主体向燃烧室提供空气流。 进入燃烧室的空气流有助于保持燃烧产物流入热空气中。 在优选实施例中，传感器感测燃烧室和热空气主体中的压力。 控制器在开放条件的范围内来回移动阀，以响应于感测到的压力来调节空气流。
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公开(公告)号：US06929469B2
公开(公告)日：2005-08-16
申请号：US10375781
申请日：2003-02-26
CPC分类号： F23N1/025 , F23C5/08 , F23C9/006 , F23C9/08 , F23C2202/20
摘要： An apparatus includes a furnace structure defining a reaction zone. A burner structure communicates with the reaction zone through a burner port. The burner port is centered on a burner axis and has a radius. A fuel inlet structure communicates with the reaction zone through a fuel port. The fuel port is centered on a fuel port axis that is spaced radially from the burner axis a distance within a range from about twice the radius to about six times the radius. The fuel port axis is skewed relative to the burner axis to direct the fuel emerging from the fuel port to flow into the reaction zone along a spiral flow path.
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公开(公告)号：US08202470B2
公开(公告)日：2012-06-19
申请号：US12729444
申请日：2010-03-23
IPC分类号： C21B15/00
CPC分类号： C21B13/0073 , F27B9/243 , F27B9/36 , F27B9/40 , F27D17/008 , F27D19/00 , F27D21/00
摘要： An indurating furnace has a heating station and an air passage leading to the heating station. A draft of preheated recirculation air is driven through the passage toward the heating station, and is mixed with fuel gas to form a combustible mixture of preheated recirculation air and fuel gas that ignites in the passage. This is accomplished by injecting the fuel gas into the passage in a stream that does not form a combustible mixture with the preheated recirculation air before entering the passage.
摘要翻译： 一个浸渍炉有一个加热站和通往加热站的空气通道。 预热再循环空气的通风通过加热站的通道被驱动，并与燃料气体混合，形成在通道中点燃的预热再循环空气和燃料气体的可燃混合物。 这是通过在进入通道之前以不与预热的再循环空气形成可燃混合物的流体将燃料气体注入通道来实现的。
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公开(公告)号：US20100244337A1
公开(公告)日：2010-09-30
申请号：US12552515
申请日：2009-09-02
IPC分类号： C22B1/00
CPC分类号： C22B1/205 , C22B1/2413 , C22B7/02 , Y02P10/212
摘要： Techniques for suppressing NOx in an indurating furnace include the use of a premix burner, the use of a staged fuel injector structure to enhance fuel lean conditions in the downdraft, and the use of a Venturi mixture structure in the downcomer.
摘要翻译： 用于抑制在惰性炉中的NOx的技术包括使用预混合燃烧器，使用分段燃料喷射器结构来增强下降气体中的燃料贫乏状况，以及在降液管中使用文丘里混合物结构。
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公开(公告)号：US20120288810A1
公开(公告)日：2012-11-15
申请号：US13492981
申请日：2012-06-11
IPC分类号： F27B15/00
CPC分类号： C21B13/0073 , F27B9/243 , F27B9/36 , F27B9/40 , F27D17/008 , F27D19/00 , F27D21/00
摘要： An indurating furnace has a heating station and an air passage leading to the heating station. A draft of preheated recirculation air is driven through the passage toward the heating station, and is mixed with fuel gas to form a combustible mixture of preheated recirculation air and fuel gas that ignites in the passage. This is accomplished by injecting the fuel gas into the passage in a stream that does not form a combustible mixture with the preheated recirculation air before entering the passage.
摘要翻译： 一个浸渍炉有一个加热站和通往加热站的空气通道。 预热再循环空气的通风通过加热站的通道被驱动，并与燃料气体混合，形成在通道中点燃的预热再循环空气和燃料气体的可燃混合物。 这是通过在进入通道之前以不与预热的再循环空气形成可燃混合物的流体将燃料气体注入通道来实现的。
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公开(公告)号：US20100248175A1
公开(公告)日：2010-09-30
申请号：US12552518
申请日：2009-09-02
CPC分类号： F23D14/02 , F23C2900/03005 , F23D91/02
摘要： A NOx suppression apparatus is configured for use with a burner that injects fuel into a stream of process air flowing into and through a rotary kiln. The apparatus comprises a premix injection system that forms a premix of fuel gas and air, and injects the premix into the stream of process air upstream of the burner port. This enables premix products of combustion to suppress the production of NOx by vitiating a combustion air portion of the process air before the combustion air portion combusts with fuel injected from the burner port.
摘要翻译： NOx抑制装置构造成与燃烧器一起使用，该燃烧器将燃料喷入流入和通过回转窑的工艺空气流中。 该装置包括形成燃料气体和空气的预混合物的预混合喷射系统，并将预混合物注入到燃烧器端口上游的处理空气流中。 这使得预燃燃烧产物能够在燃烧空气部分与从燃烧器端口喷射的燃料燃烧之前，通过使处理空气的燃烧空气部分燃烧来抑制NOx的产生。
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公开(公告)号：US20100244336A1
公开(公告)日：2010-09-30
申请号：US12729444
申请日：2010-03-23
CPC分类号： C21B13/0073 , F27B9/243 , F27B9/36 , F27B9/40 , F27D17/008 , F27D19/00 , F27D21/00
摘要： An indurating furnace has a heating station and an air passage leading to the heating station. A draft of preheated recirculation air is driven through the passage toward the heating station, and is mixed with fuel gas to form a combustible mixture of preheated recirculation air and fuel gas that ignites in the passage. This is accomplished by injecting the fuel gas into the passage in a stream that does not form a combustible mixture with the preheated recirculation air before entering the passage.
摘要翻译： 一个浸渍炉有一个加热站和通往加热站的空气通道。 预热再循环空气的通风通过加热站的通道被驱动，并与燃料气体混合，形成在通道中点燃的预热再循环空气和燃料气体的可燃混合物。 这是通过在进入通道之前以不与预热的再循环空气形成可燃混合物的流体将燃料气体注入通道来实现的。
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公开(公告)号：US06431859B1
公开(公告)日：2002-08-13
申请号：US09759473
申请日：2001-01-12
IPC分类号： F27D706
CPC分类号： F26B23/02 , F23C9/00 , F23C2202/10 , F23L5/02 , F26B15/12
摘要： An apparatus including a housing defining a heating process chamber. The housing has an opening communicating the process chamber to the ambient atmosphere. A burner is included that fires into a combustion chamber to heat gas. Also included is a collector structure located outside the opening. The collector structure is configured to collect air and exfiltrated gas from an outside area adjacent to the opening. The apparatus also includes a duct structure communicating the collector structure with the burner so as to supply the collected air and exfiltrated gas to the burner and thereby to supply combustion oxidant to the burner.
摘要翻译： 一种包括限定加热处理室的壳体的装置。 壳体具有将处理室连通到环境大气的开口。 燃烧器包括燃烧到燃烧室以加热气体的燃烧器。 还包括位于开口外部的收集器结构。 收集器结构构造成从与开口相邻的外部区域收集空气和外渗气体。 该设备还包括将收集器结构与燃烧器相通的管道结构，以便将收集的空气和已渗出的气体供应到燃烧器，从而向燃烧器供应燃烧氧化剂。
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公开(公告)号：US06206686B1
公开(公告)日：2001-03-27
申请号：US09071270
申请日：1998-05-01
IPC分类号： F23C500
CPC分类号： F23C9/006 , F23C9/08 , F23D14/22 , F23D14/66 , Y02E20/348
摘要： A low NOx burner and related method are disclosed including the steps of supplying a first reactant stream and introducing a second reactant stream into the first reactant stream at a first point so as to produce co-flowing streams. This resulting fuel/oxidant stream is discharged into a furnace environment having inert combustion products substantially equilibrated to furnace temperature, so as to entrain the combustion products and mix them together with the co-flowing stream. The temperature of the co-flowing stream is increased by the entrained products until it ignites in a combustion region displaced from the first point. Thus ignition cannot occur until the reactant stream has been diluted by inert products of combustion, reducing both oxygen concentration and peak flame temperature, so as to suppress NOx production.
摘要翻译： 公开了一种低NOx燃烧器和相关方法，其包括以下步骤：在第一点处供应第一反应物流并将第二反应物流引入第一反应物流中，以产生共流。 将所得到的燃料/氧化剂流排放到具有基本平衡于炉温的惰性燃烧产物的炉子环境中，以便夹带燃烧产物并将它们与共同流动物料混合在一起。 共同流动的温度由夹带的产物增加，直到其在从第一点移位的燃烧区域中点燃。 因此，直到反应物流被惰性惰性产物稀释后才能发生点火，降低氧气浓度和峰值火焰温度，以抑制NOx的产生。
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