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公开(公告)号：US5344307A
公开(公告)日：1994-09-06
申请号：US111447
申请日：1993-08-25
CPC分类号： F23C9/00 , F23C6/047 , F23D14/20 , F23C2201/20 , F23C2201/30 , F23C2202/20 , F23C2202/30
摘要： Improved methods and burner apparatus are provided for discharging mixtures of fuel and air into furnace spaces wherein said mixtures are burned and flue gases having low NO.sub.x content are formed therefrom. The methods basically comprise discharging a first fuel mixture containing a portion of the fuel and flue gases from the furnace space into the furnace space whereby the mixture is burned in a primary reaction zone therein and flue gases having low NO.sub.x content are formed therefrom, and then discharging the remaining portion of the fuel into a secondary reaction zone wherein the remaining portion of fuel mixes with air and flue gases to form a second fuel mixture which is burned in the secondary reaction zone and additional flue gases having low NO.sub.x content are formed therefrom.
摘要翻译： 提供改进的方法和燃烧器装置，用于将燃料和空气的混合物排放到炉空间中，其中所述混合物被燃烧，并且由此形成具有低NOx含量的烟道气。 这些方法基本上包括将含有一部分燃料和烟道气的第一燃料混合物从炉子空间排放到炉子空间中，由此混合物在其中的初级反应区域中燃烧，并由此形成具有低NOx含量的烟道气，然后 将剩余部分的燃料排放到二次反应区中，其中剩余部分的燃料与空气和烟道气混合以形成在第二反应区中燃烧的第二燃料混合物，并由其形成另外的NOx含量的烟道气。
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公开(公告)号：US5073105A
公开(公告)日：1991-12-17
申请号：US694082
申请日：1991-05-01
摘要： A burner assembly for process heaters or the like comprising a burner block, primary gas jets, secondary gas jets, a flame holder, and an air register for installation in a furnace wall or furnace floor is described. The burners are characterized in that primary fuel is introduced into the primary combustion zone of the burner at an angle horizontal to the flame holder whereby the fuel induces furnace gases from the furnace into the primary combustion zone. Similarly, the secondary fuel jets introduce a secondary fuel through the burner block for consumption in a combustion zone at the surface of the burner block. The secondary fuel also draws furnace gases into the combustion zone for consumption. The design provides for intense mixing of combustion air with the fuel and furnace gases, resulting in low NO.sub.x levels.
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公开(公告)号：US5269678A
公开(公告)日：1993-12-14
申请号：US921064
申请日：1992-07-29
CPC分类号： F23D14/20 , F23C6/047 , F23C9/00 , F23C2201/20 , F23C2201/30 , F23C2202/20 , F23C2202/30
摘要： Improved methods and burner apparatus are provided for discharging mixtures of fuel and air into furnace spaces wherein said mixtures are burned and flue gases having low NO.sub.x content are formed therefrom. The methods basically comprise discharging a first fuel mixture containing a portion of the fuel and flue gases from the furnace space into the furnace space whereby the mixture is burned in a primary reaction zone therein and flue gases having low NO.sub.x content are formed therefrom, and then discharging the remaining portion of the fuel into a secondary reaction zone wherein the remaining portion of fuel mixes with air and flue gases to form a second fuel mixture which is burned in the secondary reaction zone and additional flue gases having low NO.sub.x content are formed therefrom.
摘要翻译： 提供改进的方法和燃烧器装置，用于将燃料和空气的混合物排放到炉空间中，其中所述混合物被燃烧，并且由此形成具有低NOx含量的烟道气。 这些方法基本上包括将含有一部分燃料和烟道气的第一燃料混合物从炉子空间排放到炉子空间中，由此混合物在其中的初级反应区域中燃烧，并由此形成具有低NOx含量的烟道气，然后 将剩余部分的燃料排放到二次反应区中，其中剩余部分的燃料与空气和烟道气混合以形成在第二反应区中燃烧的第二燃料混合物，并由其形成另外的NOx含量的烟道气。
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公开(公告)号：US5098282A
公开(公告)日：1992-03-24
申请号：US578953
申请日：1990-09-07
CPC分类号： F23C9/00 , F23C6/047 , F23D14/20 , F23C2201/20 , F23C2201/30 , F23C2202/20 , F23C2202/30
摘要： Improved methods and burner apparatus are provided for discharging mixtures of fuel and air into furnace spaces wherein said mixtures are burned and flue gases having low NO.sub.x content are formed therefrom. The methods basically comprise discharging a first fuel mixture containing a portion of the fuel and flue gases from the furnace space into the furnace space whereby the mixture is burned in a primary reaction zone therein and flue gases having low NO.sub.x content are formed therefrom, and then discharging the remaining portion of the fuel into a secondary reaction zone wherein the remaining portion of fuel mixes with air and flue gases to form a second fuel mixture which is burned in the secondary reaction zone and additional flue gases having low NO.sub.x content are formed therefrom.
摘要翻译： 提供改进的方法和燃烧器装置，用于将燃料和空气的混合物排放到炉空间中，其中所述混合物被燃烧，并且由此形成具有低NOx含量的烟道气。 这些方法基本上包括将含有一部分燃料和烟道气的第一燃料混合物从炉子空间排放到炉子空间中，由此混合物在其中的初级反应区域中燃烧，并由此形成具有低NOx含量的烟道气，然后 将剩余部分的燃料排放到二次反应区中，其中剩余部分的燃料与空气和烟道气混合以形成在第二反应区中燃烧的第二燃料混合物，并由其形成另外的NOx含量的烟道气。
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公开(公告)号：US06875008B1
公开(公告)日：2005-04-05
申请号：US10353439
申请日：2003-01-29
摘要： An improved burner assembly and process for operating same using a burner design that produces very low levels of undesirable nitrogen oxides is provided. The burner assembly premixes primary fuel and air in a venturi system and recirculates combustion gases back to the burner through a plurality of recirculation conduits where it is mixed with the premix of fuel and air and secondary air prior to combustion in a primary combustion zone. Rapid premixing of the primary fuel and air in the venturi system and the dispersion of 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： 提供了一种改进的燃烧器组件和使用产生非常低水平的不期望的氮氧化物的燃烧器设计来操作燃烧器组件的方法。 燃烧器组件将主要燃料和空气预先混合在文丘里管系统中，并且将燃烧气体通过多个再循环管道再循环到燃烧器中，在多个再循环管道中，燃料和空气与二次空气在燃烧前在一次燃烧区域中混合。 据信，文丘里系统中初级燃料和空气的快速预混合以及再循环的炉内气体的分散，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：US5154596A
公开(公告)日：1992-10-13
申请号：US836779
申请日：1992-02-13
CPC分类号： F23C9/00 , F23C6/047 , F23D14/20 , F23C2201/20 , F23C2201/30 , F23C2202/20 , F23C2202/30
摘要： Improved methods and burner apparatus are provided for discharging mixturesf fuel and air into furnace spaces wherein said mixtures are burned and flue gases having low NO.sub.x content are formed therefrom. The methods basically comprise discharging a first fuel mixture containing a portion of the fuel and flue gases from the furnace space into the furnace space whereby the mixture is burned in a primary reaction zone therein and flue gases having low NO.sub.x content are formed therefrom, and then discharging the remaining portion of the fuel into a secondary reaction zone wherein the remaining portion of fuel mixes with air and flue gases to form a second fuel mixture which is burned in the secondary reaction zone and additional flue gases having low NO.sub.x contents are formed therefrom.
摘要翻译： 提供改进的方法和燃烧器装置，用于将燃料和空气的混合物排放到炉空间中，其中所述混合物被燃烧，并且由此形成具有低NOx含量的烟道气。 这些方法基本上包括将含有一部分燃料和烟道气的第一燃料混合物从炉子空间排放到炉子空间中，由此混合物在其中的初级反应区域中燃烧，并由此形成具有低NOx含量的烟道气，然后 将剩余部分的燃料排放到二次反应区中，其中燃料的剩余部分与空气和烟道气混合以形成在第二反应区中燃烧的第二燃料混合物，并由其形成具有低NO x含量的另外的烟道气。
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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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