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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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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：US06638061B1
公开(公告)日：2003-10-28
申请号：US10218122
申请日：2002-08-13
IPC分类号： F27B1500
CPC分类号： F27B17/00
摘要： Primary fuel and preheated oxidant are injected into a combustion zone to produce a flame with a predetermined adiabatic flame temperature. The preheated oxidant is injected at a target rate of oxidant injection. The primary fuel is injected at a first reduced rate which is less than a corresponding target rate of fuel injection. Secondary fuel is simultaneously injected into the combustion zone separately from the flame at a second reduced rate which is equal to the difference between the first reduced rate and the target rate of fuel injection. In this manner, combustion of the fuel with the preheated oxidant provides the amount of heat expected from the target rates of injection, while maintaining an adiabatic flame temperature that is lower than it might otherwise be if the target rate of fuel injection were provided entirely at the flame. The lower adiabatic flame temperature provides a correspondingly lower rate of NOx production.
摘要翻译： 主燃料和预热的氧化剂被注入燃烧区以产生具有预定绝热火焰温度的火焰。 以氧化剂注射的目标速率注入预热的氧化剂。 主要燃料以低于相应的燃料喷射速率的第一降低速率喷射。 二次燃料以与第一降低速率和目标燃料喷射速率之间的差相等的第二降低速率与火焰分开地同时喷射到燃烧区域中。 以这种方式，燃料与预热的氧化剂的燃烧提供了从目标喷射速率预期的热量，同时保持绝热火焰温度低于否则如果燃料喷射的目标速率完全提供在 火焰。 较低的绝热火焰温度提供相应较低的NOx生成速率。
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公开(公告)号：US20120251960A1
公开(公告)日：2012-10-04
申请号：US13431036
申请日：2012-03-27
CPC分类号： F23L15/02 , F23N1/042 , F23N5/003 , F23N5/022 , F23N2021/08 , F23N2021/12 , F23N2025/14 , F23N2035/04 , F23N2035/06 , Y02E20/348
摘要： A method includes the steps of operating a regenerative burner in cycles, including a firing cycle in which fuel and combustion air are discharged from the burner into a process chamber, and a nonfiring cycle in which a quantity of gas is withdrawn from the process chamber through a regenerative bed associated with the burner. The method further includes steps of detecting and responding to a temperature that differs from a predetermined temperature at a location in the process chamber. In a first step of responding to the detected temperature, a flue damper system is operated to vary a flow of gas within the process chamber relative to the location of the detected temperature. A second step of responding to the detected temperature reduces the quantity of gas to be withdrawn from the process chamber through the regenerative bed in a subsequent nonfiring cycle.
摘要翻译： 一种方法包括以下步骤：循环地操作蓄热式燃烧器，包括燃烧和燃烧空气从燃烧器排放到处理室中的燃烧循环，以及非燃烧循环，其中一定量的气体从处理室通过 与燃烧器相关联的再生床。 该方法还包括检测并响应于在处理室中的位置处与预定温度不同的温度的步骤。 在响应检测到的温度的第一步骤中，操作烟道阻尼器系统以相对于检测到的温度的位置改变处理室内的气体流。 响应检测到的温度的第二步骤是在随后的非燃烧循环中减少通过再生床从处理室中排出的气体的量。
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公开(公告)号：US08083517B2
公开(公告)日：2011-12-27
申请号：US12115214
申请日：2008-05-05
IPC分类号： F23N1/02
CPC分类号： F23N1/022 , F23C9/00 , F23C2202/50 , F23L15/02 , F23N5/02 , F23N2035/06 , F23N2037/02 , F23N2037/26 , Y02E20/348
摘要： A method of firing a burner into a furnace process chamber supplies the burner with fuel and combustion air at a ratio that provides a level of excess air. The method includes the steps of reducing the flow rate of combustion air, and maintaining the level of excess air when the flow rate of combustion air is being reduced. Other steps include withdrawing exhaust gas from the process chamber, and supplying the burner with the exhaust gas at an increasing flow rate when the flow rate of combustion air is being reduced.
摘要翻译： 将燃烧器烧制到炉加工室中的方法以提供过量空气的比例向燃烧器供应燃料和燃烧空气。 该方法包括以下步骤：降低燃烧空气的流量，并且在燃烧空气的流量减少时保持过量空气的水平。 其他步骤包括从处理室抽出废气，并且当燃烧空气的流量减少时以增加的流量向燃烧器供应废气。
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公开(公告)号：US07666345B2
公开(公告)日：2010-02-23
申请号：US12202451
申请日：2008-09-02
申请人： Thomas F. Robertson , John N. Newby
发明人： Thomas F. Robertson , John N. Newby
IPC分类号： C21D9/56
CPC分类号： C22B21/0084 , F27B3/205 , F27B3/28 , F27D17/004 , F27D19/00 , F27D21/00
摘要： An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative to fire into the melting chamber, and regenerative burners that also are operative to fire into the melting chamber. The method includes the steps of firing non-regenerative burners into the chamber to provide heat for melting the load, and also firing regenerative burners into the chamber to provide heat for melting the load.
摘要翻译： 用于熔化金属负载的设备包括具有炉底和熔融金属出口的熔化室的炉。 该装置还包括可操作以射入熔化室的非再生式燃烧器，以及也可操作地射入熔化室的蓄热式燃烧器。 该方法包括以下步骤：将非再生式燃烧器喷射到室中以提供用于熔化负载的热量，以及将再生燃烧器发射到室中以提供用于熔化负载的热量。
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公开(公告)号：US20090246719A1
公开(公告)日：2009-10-01
申请号：US12115214
申请日：2008-05-05
IPC分类号： F23J15/00
CPC分类号： F23N1/022 , F23C9/00 , F23C2202/50 , F23L15/02 , F23N5/02 , F23N2035/06 , F23N2037/02 , F23N2037/26 , Y02E20/348
摘要： A method of firing a burner into a furnace process chamber supplies the burner with fuel and combustion air at a ratio that provides a level of excess air. The method includes the steps of reducing the flow rate of combustion air, and maintaining the level of excess air when the flow rate of combustion air is being reduced. Other steps include withdrawing exhaust gas from the process chamber, and supplying the burner with the exhaust gas at an increasing flow rate when the flow rate of combustion air is being reduced.
摘要翻译： 将燃烧器烧制到炉加工室中的方法以提供过量空气的比例向燃烧器供应燃料和燃烧空气。 该方法包括以下步骤：降低燃烧空气的流量，并且在燃烧空气的流量减少时保持过量空气的水平。 其他步骤包括从处理室抽出废气，并且当燃烧空气的流量减少时以增加的流量向燃烧器供应废气。
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公开(公告)号：US08033254B2
公开(公告)日：2011-10-11
申请号：US12144905
申请日：2008-06-24
IPC分类号： F17C9/02
CPC分类号： B01B1/005 , F17C2227/0395 , F17C2260/044 , F23C3/004
摘要： A submerged combustion vaporizer may include a premix burner with multiple integral mixers for forming premix and discharging the premix into the duct system that communicates the burner with the sparger tubes. The SCV may further include a NOx suppression system that injects a staged fuel stream into the exhaust in the duct system, and/or a NOx suppression system that mixes water with the premix.
摘要翻译： 浸没燃烧蒸发器可以包括具有多个整体式混合器的预混合燃烧器，用于形成预混合物，并将预混合物排放到将燃烧器与分布器管连通的管道系统中。 SCV还可以包括将分级燃料流注入管道系统中的排气中的NOx抑制系统和/或将水与预混合物混合的NOx抑制系统。
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公开(公告)号：US20090020051A1
公开(公告)日：2009-01-22
申请号：US12202451
申请日：2008-09-02
申请人： Thomas F. Robertson , John N. Newby
发明人： Thomas F. Robertson , John N. Newby
IPC分类号： F23B90/00
CPC分类号： C22B21/0084 , F27B3/205 , F27B3/28 , F27D17/004 , F27D19/00 , F27D21/00
摘要： An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative to fire into the melting chamber, and regenerative burners that also are operative to fire into the melting chamber. The method includes the steps of firing non-regenerative burners into the chamber to provide heat for melting the load, and also firing regenerative burners into the chamber to provide heat for melting the load.
摘要翻译： 用于熔化金属负载的设备包括具有炉底和熔融金属出口的熔化室的炉。 该装置还包括可操作以射入熔化室的非再生式燃烧器，以及也可操作地射入熔化室的蓄热式燃烧器。 该方法包括以下步骤：将非再生式燃烧器喷射到室中以提供用于熔化负载的热量，以及将再生燃烧器发射到室中以提供用于熔化负载的热量。
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公开(公告)号：US07452400B2
公开(公告)日：2008-11-18
申请号：US11176465
申请日：2005-07-07
申请人： Thomas F. Robertson , John N. Newby
发明人： Thomas F. Robertson , John N. Newby
IPC分类号： C22B21/00
CPC分类号： C22B21/0084 , F27B3/205 , F27B3/28 , F27D17/004 , F27D19/00 , F27D21/00
摘要： An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative to fire into the melting chamber, and regenerative burners that also are operative to fire into the melting chamber. The method includes the steps of firing non-regenerative burners into the chamber to provide heat for melting the load, and also firing regenerative burners into the chamber to provide heat for melting the load.
摘要翻译： 用于熔化金属负载的设备包括具有炉底和熔融金属出口的熔化室的炉。 该装置还包括可操作以射入熔化室的非再生式燃烧器，以及也可操作地射入熔化室的蓄热式燃烧器。 该方法包括以下步骤：将非再生式燃烧器喷射到室中以提供用于熔化负载的热量，以及将再生燃烧器发射到室中以提供用于熔化负载的热量。
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