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公开(公告)号：US20220196238A1
公开(公告)日：2022-06-23
申请号：US17230139
申请日：2021-04-14
发明人： Thomas F. Robertson , Mark Hannum
摘要： A method heats a furnace process chamber with the combustion of fuel gas. The method heats the process chamber in a preheat mode when the temperature of the process chamber is below the autoignition temperature of the fuel gas. The preheat mode forms preheated combustion air by directing the combustion air through a regenerative bed. A stream of the preheated combustion air is directed into the process chamber in a condition unmixed with fuel gas. The preheat mode also forms a fuel rich mixture of the fuel gas and unheated combustion air. The fuel rich mixture is directed into the process chamber adjacent to the stream of preheated combustion air.
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公开(公告)号：US11187408B2
公开(公告)日：2021-11-30
申请号：US16394577
申请日：2019-04-25
摘要： An apparatus includes first and second mixer tubes. The first mixer tube contains a first gas flow passage having an inlet communicating with the source of fuel gas and an outlet to a combustion chamber. The second mixer tube contains a second gas flow passage having an inlet communicating with the source of combustion air and an outlet to the combustion chamber. The apparatus further includes premix control means for forming fuel gas-combustion air premix in the second passage by directing fuel gas from the first passage into the second passage, and for alternatively forming fuel gas-combustion air premix in the first passage by directing combustion air from the second passage into the first passage.
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公开(公告)号：US20200340667A1
公开(公告)日：2020-10-29
申请号：US16394577
申请日：2019-04-25
摘要： An apparatus includes first and second mixer tubes. The first mixer tube contains a first gas flow passage having an inlet communicating with the source of fuel gas and an outlet to a combustion chamber. The second mixer tube contains a second gas flow passage having an inlet communicating with the source of combustion air and an outlet to the combustion chamber. The apparatus further includes premix control means for forming fuel gas-combustion air premix in the second passage by directing fuel gas from the first passage into the second passage, and for alternatively forming fuel gas-combustion air premix in the first passage by directing combustion air from the second passage into the first passage.
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公开(公告)号：US20180172351A1
公开(公告)日：2018-06-21
申请号：US15385970
申请日：2016-12-21
摘要： An apparatus for use with a launder shell includes a heating component formed of refractory material. The heating component has a compartment configured to contain an electrical heating element. The apparatus further includes an elongated trough section configured for placement in an installed position inside the shell. The trough section has a fluid flow channel and a cavity beneath the channel. The cavity is configured to receive and support the heating component for movement into and out of the installed position together with the trough section.
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5.发明授权Apparatus and methods for achieving low NOx in a grate-kiln pelletizing furnace 有权在炉窑造粒炉中实现低NOx的装置和方法公开(公告)号：US09250018B2
公开(公告)日：2016-02-02
申请号：US12732440
申请日：2010-03-26
申请人： Bruce E. Cain
发明人： Bruce E. Cain
CPC分类号： F27B7/2016 , C22B1/2406 , F27B7/38
摘要： A grate-kiln pelletizing furnace includes a grate that conveys pelletized material to a rotary kiln, a cooler that cools pelletized material from the rotary kiln, and a gas flow apparatus that directs a stream of gas from the cooler to the rotary kiln to provide preheated process air for pelletized material in the rotary kiln. The gas flow apparatus also directs a stream of gas from the grate to the rotary kiln to vitiate the preheated process air.
摘要翻译： 炉窑造粒炉包括将造粒材料输送到回转窑的炉排，从回转窑冷却粒化材料的冷却器，以及气流装置，其将来自冷却器的气流引导至回转窑以提供预热的 在回转窑中处理造粒材料的空气。 气流装置还将来自炉排的气流引导到回转窑以破坏预热的工艺空气。
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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：US11668460B2
公开(公告)日：2023-06-06
申请号：US17230139
申请日：2021-04-14
发明人： Thomas F. Robertson , Mark Hannum
IPC分类号： F23L15/02 , F23C7/00 , F23C7/06 , F23D14/10 , F23D14/64 , F23D14/66 , F23D14/70 , F23D14/02 , F23C9/06 , F23D14/46
CPC分类号： F23L15/02 , F23C7/00 , F23C7/06 , F23C9/06 , F23C2900/06041 , F23D14/02 , F23D14/105 , F23D14/46 , F23D14/64 , F23D14/66 , F23D14/70 , F23L2900/15021 , F23L2900/15022 , Y02E20/34
摘要： A method heats a furnace process chamber with the combustion of fuel gas. The method heats the process chamber in a preheat mode when the temperature of the process chamber is below the autoignition temperature of the fuel gas. The preheat mode forms preheated combustion air by directing the combustion air through a regenerative bed. A stream of the preheated combustion air is directed into the process chamber in a condition unmixed with fuel gas. The preheat mode also forms a fuel rich mixture of the fuel gas and unheated combustion air. The fuel rich mixture is directed into the process chamber adjacent to the stream of preheated combustion air.
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公开(公告)号：US10344971B2
公开(公告)日：2019-07-09
申请号：US15180226
申请日：2016-06-13
摘要： Air and fuel are directed from a burner outlet into a furnace process chamber in streams concentric on an axis, including an annular peripheral stream that includes fuel gas and adjoins products of combustion in the process chamber.
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公开(公告)号：US20190162473A1
公开(公告)日：2019-05-30
申请号：US15826845
申请日：2017-11-30
摘要： A radiant heating panel has an inner side surface configured to face into a combustion chamber and an outer side surface configured to face oppositely away from the combustion chamber. The panel has interconnected sections formed of ceramic material. The panel sections are elongated with adjacent longitudinal edge portions, and are joined and sealed together along the adjacent longitudinal edge portions. The outer side surface of the panel has a contour that undulates laterally across the panel sections.
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公开(公告)号：US20170167725A1
公开(公告)日：2017-06-15
申请号：US14963580
申请日：2015-12-09
发明人： Thomas F. Robertson
CPC分类号： F23N1/022 , F23C2900/99001 , F23C2900/99006 , F23D14/02 , F23N5/123 , F23N5/265 , F23N2027/02 , F23Q7/06 , F23Q13/00
摘要： A method directs fuel-oxidant premix into a reaction zone through a first total premix inlet flow area, and causes the premix to combust and form a stable flame projecting into a process chamber through an outlet from the reaction zone. At a time when the process chamber has a temperature at or above an auto-ignition temperature of the fuel, the flame is blown off to initiate diffuse combustion in the process chamber without a stable flame. The flame is blown off by directing the premix into the reaction zone through a second total premix inlet flow area greater than the first total premix inlet flow area.
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