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公开(公告)号：US6071115A
公开(公告)日：2000-06-06
申请号：US925814
申请日：1997-09-05
摘要： A process and apparatus for combusting fuel which results in reduction of nitrogen oxides and carbon monoxides emissions. Fuel and primary air are preferably premixed and introduced into a combustion chamber. Secondary air is introduced through a plurality of secondary air ports, each preferably shaped as a slot, which are positioned about a venturi nozzle or flame holder disk mounted with respect to a combustion chamber wall. The secondary air flowing through the secondary air ports forms relatively high velocity and momentum secondary air jets that promote rapid mixing of the fuel and primary air mixture into the secondary air flow, such that a combustion flame is established at a partial periphery of the secondary air jets.
摘要翻译： 用于燃烧燃料的方法和装置，其导致氮氧化物和一氧化碳排放物的减少。 燃料和一次空气优选地被预混合并被引入到燃烧室中。 二次空气通过多个二次空气端口引入，每个二次空气端口优选地成形为狭槽，其围绕相对于燃烧室壁安装的文氏管喷嘴或火焰保持器盘定位。 流经二次空气端口的二次空气形成相对较高的速度和动量二次空气喷射，其促进燃料和一次空气混合物快速混合到二次空气流中，使得在二次空气的部分周边建立燃烧火焰 喷气机
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公开(公告)号：US5681159A
公开(公告)日：1997-10-28
申请号：US625926
申请日：1996-04-01
CPC分类号： F23C7/00 , F23C9/08 , F23C2900/06041 , F23C2900/09002
摘要： A process and apparatus for combustion of fuel which results in reduction of nitrogen oxides and carbon monoxides emissions. Fuel and primary air are preferably premixed and introduced into a combustion chamber. Secondary air is introduced through a plurality of secondary air ports which are positioned about a venturi nozzle or flame holder disk mounted with respect to a combustion chamber wall. The secondary air flowing through the secondary air ports forms relatively high velocity and momentum secondary air jets that promote rapid mixing of the fuel and primary air mixture into the secondary air flow, such that a combustion flame is established at a periphery of the secondary air jets.
摘要翻译： 用于燃料燃烧的方法和装置，其导致氮氧化物和一氧化碳排放的减少。 燃料和一次空气优选地被预混合并被引入到燃烧室中。 二次空气通过多个二次空气孔引入，该二个空气端口相对于燃烧室壁安装在文丘里喷嘴或火焰保持器盘周围。 流经二次空气端口的二次空气形成相对高速度和动量的二次空气喷射，其促进燃料和一次空气混合物快速混合到二次空气流中，使得在二次空气射流的周边建立燃烧火焰 。
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公开(公告)号：US5645413A
公开(公告)日：1997-07-08
申请号：US376114
申请日：1995-01-20
CPC分类号： F23D14/74 , F23C6/045 , F23C7/02 , F23D14/70 , Y02E20/344
摘要： A method and apparatus for low NO.sub.x combustion in natural draft combustion chambers comprising staged-air combustion apparatus and process in which a fuel-rich, fuel/air mixture is introduced through a burner into a combustion chamber, forming a fuel-rich primary combustion zone flame. The fuel-rich primary combustion zone flame is attached to a flame guide disposed substantially parallel to the longitudinal axis of the primary combustion zone flame and extending from behind the burner. The flame guide also provides for removal of heat from the primary combustion zone flame. Secondary combustion air is introduced into the combustion chamber downstream of the burner to complete combustion of the fuel-rich primary combustion zone flame products. Internal recirculation of combustion gases within the combustion chamber into the fuel-rich primary combustion zone flame stabilize the fuel-rich primary combustion zone flame and contribute to emissions reduction.
摘要翻译： 一种用于自然通风燃烧室中的低NOx燃烧的方法和装置，包括分级空气燃烧装置和其中富燃料燃料/空气混合物通过燃烧器引入燃烧室中的工艺，形成富燃料的初级燃烧区 火焰。 燃料丰富的一次燃烧区火焰附接到基本上平行于主燃烧区火焰的纵向轴线设置并从燃烧器后面延伸的火焰引导件。 火焰引导件还提供从主燃烧区火焰中除去热量。 二次燃烧空气被引入到燃烧器下游的燃烧室中以完成富燃料的一级燃烧区火焰产物的燃烧。 将燃烧室内的燃烧气体内部再循环到富燃料的一级燃烧区火焰中，使燃料丰富的一级燃烧区火焰稳定，并有助于减少排放。
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公开(公告)号：US06672858B1
公开(公告)日：2004-01-06
申请号：US09907793
申请日：2001-07-18
申请人： Charles E. Benson , Roberto O. Pellizzari , Peter J. Loftus , Dennis L. Juedes , Richard R. Martin , Earl Ray Wade , Paul M. Rodden
发明人： Charles E. Benson , Roberto O. Pellizzari , Peter J. Loftus , Dennis L. Juedes , Richard R. Martin , Earl Ray Wade , Paul M. Rodden
IPC分类号： F23M300
CPC分类号： F23C6/047 , F23C9/08 , F23C2202/20 , F23C2900/09002 , F23D2900/14124
摘要： An improved process for heating furnaces using a burner design that produces very low level of undesirable nitrogen oxides is provided. The process recirculates a large volume of furnaces gases back to the burner where it is mixed with fuel gas in a plurality of recirculation ports prior to combusting with air in a primary combustion zone. Dispersion of the fuel gas in the recirculated furnace gases is believed to result in lower peak flame temperatures and therefore minimizing the formation of the pollutants, such as nitrogen oxides.
摘要翻译： 提供了使用产生非常低水平的不期望的氮氧化物的燃烧器设计的加热炉的改进方法。 该过程将大量的炉子气体再循环回到燃烧器，在燃烧器中，在与主燃烧区域中的空气燃烧之前，其与多个再循环端口中的燃料气体混合。 据信燃料气体在再循环的炉内气体中的分散会导致较低的峰值火焰温度，从而使污染物（如氮氧化物）的形成最小化。
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公开(公告)号：US5269679A
公开(公告)日：1993-12-14
申请号：US964550
申请日：1992-10-16
CPC分类号： F23C6/045 , F23C7/06 , F23C9/00 , F23C2201/20 , F23C2202/10 , F23C2900/06041 , F23C2900/09002 , Y02E20/344 , Y02E20/348
摘要： A gas-fired burner incorporating an air driven jet pump for mixing air, fuel, and recirculated flue gas is disclosed. The burner is configured for the staged introduction of combustion air to provide a fuel-rich combustion zone and a fuel-lean combustion zone. The burner achieves reduced NO.sub.x emission levels in high temperature applications which use preheated combustion air.
摘要翻译： 公开了一种燃气式燃烧器，其包括用于混合空气，燃料和再循环烟道气的空气驱动喷射泵。 燃烧器构造成用于分级引入燃烧空气以提供富燃料燃烧区和贫燃燃烧区。 燃烧器在使用预热的燃烧空气的高温应用中实现降低的NOx排放水平。
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公开(公告)号：US5636977A
公开(公告)日：1997-06-10
申请号：US322755
申请日：1994-10-13
CPC分类号： F23C9/00 , F23C6/047 , F23C9/08 , F23D14/36 , F23C2201/20 , F23C2201/30
摘要： A burner apparatus and method for reducing nitrogen oxides that are formed during combustion of gaseous fuel. Primary gaseous fuel and excess oxidant are premixed to form a fuel/oxidant mixture which is introduced into and combusted within a primary combustion zone. Primary combustion products are introduced into a secondary combustion zone. Secondary gaseous fuel is also introduced into the secondary combustion zone and is preferably mixed with the primary combustion products. The mixture of secondary gaseous fuel and primary combustion products is combusted in a secondary combustion zone. A portion of the secondary combustion products are internally recirculated into the secondary combustion zone. The overall combustion products can be externally recirculated and introduced into the primary combustion zone. A portion of the fuel/oxidant mixture, with or without the recirculated overall combustion products, can be bypassed around the primary combustion zone and introduced into the secondary combustion zone.
摘要翻译： 一种用于还原在气体燃料燃烧期间形成的氮氧化物的燃烧器装置和方法。 初级气体燃料和过量的氧化剂被预混合以形成燃料/氧化剂混合物，其被引入并在主燃烧区内燃烧。 初级燃烧产物被引入二次燃烧区。 次级气体燃料也被引入到二次燃烧区域中，并且优选与初级燃烧产物混合。 二次气体燃料和一次燃烧产物的混合物在二次燃烧区燃烧。 二次燃烧产物的一部分在内部再循环进入二次燃烧区。 总体燃烧产物可以从外部再循环并被引入主燃烧区。 具有或不具有再循环的总燃烧产物的燃料/氧化剂混合物的一部分可以围绕主燃烧区旁路并被引入二次燃烧区。
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公开(公告)号：US06007325A
公开(公告)日：1999-12-28
申请号：US20359
申请日：1998-02-09
CPC分类号： F23M5/025 , F23C6/047 , F23C9/006 , F23C2201/20 , F23C2201/30 , F23D2900/00008
摘要： A gas fired burner is provided for use in applications such as chemical process furnaces for process heaters in refineries and chemical plants, and the like. The burner is provided with a plurality of fuel gas inlets for enabling manipulation of the flame shape and combustion characteristics of the burner, based upon variation in the distribution of fuel gas between the various fuel gas inlets.A combination pilot and flame holder for a burner, such as may be used in process heaters and furnaces for refineries, chemical plants and the like, is also provided. The pilot is mounted atop a supply pipe for premixed fuel and air, which is positioned in the bore of a burner quarl. The pilot includes a radially outwardly extending flange which is upstream of a surface combustion flame holder for establishing a radially directed surface combustion flame.The present invention also provides a low-emissions burner and pilot system for use in such process heaters and furnaces.
摘要翻译： 提供燃气燃烧器用于诸如炼油厂和化工厂中的工艺加热器的化学处理炉等应用。 燃烧器设置有多个燃料气体入口，用于基于各种燃料气体入口之间燃料气体分布的变化来操纵燃烧器的火焰形状和燃烧特性。 还提供了用于燃烧器的组合导管和火焰保持器，诸如可以用于工艺加热器和用于炼油厂，化工厂等的炉子。 飞行员安装在用于预混合燃料和空气的供应管上方，预定燃料和空气位于燃烧器膛孔中。 飞行员包括径向向外延伸的凸缘，其在表面燃烧火焰保持器的上游，用于建立径向指向的表面燃烧火焰。 本发明还提供了一种用于这种工艺加热器和炉中的低排放燃烧器和先导系统。
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公开(公告)号：US5993193A
公开(公告)日：1999-11-30
申请号：US20362
申请日：1998-02-09
CPC分类号： F23C9/006 , F23C6/047 , F23C2201/20 , F23C2201/30 , F23C2202/20 , F23D2900/00008
摘要： A gas fired burner is provided for use in applications such as chemical process furnaces for process heaters in refineries and chemical plants, and the like. The burner is provided with a plurality of fuel gas inlets for enabling manipulation of the flame shape and combustion characteristics of the burner, based upon variation in the distribution of fuel gas between the various fuel gas inlets.A combination pilot and flame holder for a burner, such as may be used in process heaters and furnaces for refineries, chemical plants and the like, is also provided. The pilot is mounted atop a supply pipe for premixed fuel and air, which is positioned in the bore of a burner quarl. The pilot includes a radially outwardly extending flange which is upstream of a surface combustion flame holder for establishing a radially directed surface combustion flame.The present invention also provides a low-emissions burner and pilot system for use in such process heaters and furnaces.
摘要翻译： 提供燃气燃烧器用于诸如炼油厂和化工厂中的工艺加热器的化学处理炉等应用。 燃烧器设置有多个燃料气体入口，用于基于各种燃料气体入口之间燃料气体分布的变化来操纵燃烧器的火焰形状和燃烧特性。 还提供了用于燃烧器的组合导管和火焰保持器，诸如可以用于工艺加热器和用于炼油厂，化工厂等的炉子。 飞行员安装在用于预混合燃料和空气的供应管上方，预定燃料和空气位于燃烧器膛孔中。 飞行员包括径向向外延伸的凸缘，其在表面燃烧火焰保持器的上游，用于建立径向指向的表面燃烧火焰。 本发明还提供了一种用于这种工艺加热器和炉中的低排放燃烧器和先导系统。
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公开(公告)号：US5984665A
公开(公告)日：1999-11-16
申请号：US20358
申请日：1998-02-09
CPC分类号： F23C6/047 , F23D14/00 , F23C2201/20 , F23C2202/40 , F23D2203/101 , F23D2209/20 , F23D2900/00008 , F23D2900/00015
摘要： A gas fired burner is provided for use in applications such as chemical process furnaces for process heaters in refineries and chemical plants, and the like. The burner is provided with a plurality of fuel gas inlets for enabling manipulation of the flame shape and combustion characteristics of the burner, based upon variation in the distribution of fuel gas between the various fuel gas inlets.A combination pilot and flame holder for a burner, such as may be used in process heaters and furnaces for refineries, chemical plants and the like, is also provided. The pilot is mounted atop a supply pipe for premixed fuel and air, which is positioned in the bore of a burner quarl. The pilot includes a radially outwardly extending flange which is upstream of a surface combustion flame holder for establishing a radially directed surface combustion flame.The present invention also provides a low-emissions burner and pilot system for use in such process heaters and furnaces.
摘要翻译： 提供燃气燃烧器用于诸如炼油厂和化工厂中的工艺加热器的化学处理炉等应用。 燃烧器设置有多个燃料气体入口，用于基于各种燃料气体入口之间燃料气体分布的变化来操纵燃烧器的火焰形状和燃烧特性。 还提供了用于燃烧器的组合导管和火焰保持器，诸如可以用于工艺加热器和用于炼油厂，化工厂等的炉子。 飞行员安装在用于预混合燃料和空气的供应管上方，预定燃料和空气位于燃烧器膛孔中。 飞行员包括径向向外延伸的凸缘，其在表面燃烧火焰保持器的上游，用于建立径向指向的表面燃烧火焰。 本发明还提供了一种用于这种工艺加热器和炉中的低排放燃烧器和先导系统。
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10.发明授权Advanced fired heater unit for use in refinery and petro-chemical applications 有权先进的燃烧加热器单元，用于炼油和石油化工应用公开(公告)号：US08490581B2
公开(公告)日：2013-07-23
申请号：US11808973
申请日：2007-06-14
IPC分类号： F22B21/02
CPC分类号： C10G9/20
摘要： A fired heater unit is disclosed having at least one radiant heating section with each of the at least one radiant heating section having a heating element located therein. The unit includes a convection section operatively connected to the at least one radiant heating section, wherein the convection section having at least one vertically oriented convection tube. Each of the at least one convection tube being operatively connected to the at least one radiant heating section. Each of the at least one convection tube includes an inner tube having process fluid flowing therethrough, wherein the process fluid being heated by the at least one radiant heating section, and an outer tube extending along a predetermined portion of the inner tube, wherein the outer tube is spaced from the inner tube to form a flow path therebetween.
摘要翻译： 公开了一种具有至少一个辐射加热部分的燃烧加热器单元，其中至少一个辐射加热部分中的每一个具有位于其中的加热元件。 该单元包括可操作地连接到至少一个辐射加热部分的对流部分，其中对流部分具有至少一个垂直取向的对流管。 所述至少一个对流管中的每一个可操作地连接到所述至少一个辐射加热部。 所述至少一个对流管中的每一个包括具有流过其中的工艺流体的内管，其中所述工艺流体被所述至少一个辐射加热部加热，以及沿着所述内管的预定部分延伸的外管， 管与内管间隔开，以形成它们之间的流路。
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