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31.发明授权
公开(公告)号：US5121700A
公开(公告)日：1992-06-16
申请号：US587645
申请日：1990-09-24
Applicant: Brian R. Blackwell , Colin MacCallum
Inventor： Brian R. Blackwell , Colin MacCallum
CPC classification number: F23G7/04 , F23C5/28 , F23C7/02 , F23L1/00 , F23L9/00 , F23C2201/101 , F23G2207/30 , F23G2209/101
Abstract: This invention is directed to a method and apparatus for improving fluid flow and gas mixing in boilers. More particularly, this invention pertains to a method and apparatus for improved fluid flow and gas mixing in kraft recovery boilers for increased energy efficiency, reduced TRS emissions and increased capacity. The method of introducing air into a boiler furnace comprises: (a) introducing air through at least one opening located on at least a first wall of the interior of the furnace; and (b) introducing air through at least one second opening located on a second wall of the interior of the furnace opposed to the first wall at the same, or different, elevations. The method of introducing air into a boiler furnace may also comprise: (a) introducing air into the furnace in the form of a first set of small and large jets originating from one wall of the interior of the furnace; and (b) introducing air into the furnace in the form of a second set of small and large jets originating from the wall of the interior of the furnace opposite the first wall. The locations of the sources of the first set of small and large jets may be placed so that they oppose the sources of the second set of small and large jets, with small jets opposing large jets, and vice versa. The sizes of the jets may be regulated by varying opening size, number of openings in groups of openings, air pressure upstream of the openings, or combinations thereof.
Abstract translation: 本发明涉及一种用于改善锅炉中的流体流动和气体混合的方法和装置。 更具体地说，本发明涉及用于改进牛皮纸回收锅炉中的流体流动和气体混合的方法和装置，用于提高能量效率，减少TRS排放和增加容量。 将空气引入锅炉炉的方法包括：（a）通过位于炉内部的至少第一壁上的至少一个开口引入空气; 和（b）以相同或不同的高度通过位于炉壁内部的第二壁上的至少一个第二开口引入空气，该第二壁与第一壁相对。 将空气引入锅炉炉中的方法还可以包括：（a）以来自炉内部的一个壁的第一组小型和大型喷射器的形式将空气引入炉中; 和（b）以来自与第一壁相对的炉内部的壁的第二组小型和大型喷射器的形式将空气引入炉中。 第一组小型和大型喷气机的源的位置可以放置成使得它们与第二组小型和大型喷气机的源相反，小型喷气机与大型喷气机相对，反之亦然。 喷射器的尺寸可以通过改变开口尺寸，开口组中的开口数量，开口上游的空气压力或其组合来调节。
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公开(公告)号：US5020454A
公开(公告)日：1991-06-04
申请号：US606682
申请日：1990-10-31
Applicant: Todd D. Hellewell , John Grusha , Michael S. McCartney
Inventor： Todd D. Hellewell , John Grusha , Michael S. McCartney
CPC classification number: F23C5/32 , F23C1/00 , F23C6/047 , F23C2201/101
Abstract: A clustered concentric tangential firing system (12) particularly suited for use in fossil fuel-fired furnaces (10) and a method of operating such furnaces (10) equipped with a clustered concentric tangential firing system (12). The clustered concentric tangential firing system (12) includes a windbox (20), a first cluster of fuel nozzles (38,40) mounted in the windbox (20) and operative for injecting clustered fuel into the furnace (10) so as to create a first fuel-rich zone therewithin, a second cluster of fuel nozzles (68,70) mounted in the windbox (20) and operative for injecting clustered fuel into the furnace (10) so as to create a second fuel-rich zone therewithin, an offset air nozzle (56) mounted in the windbox (20) and operative for injecting offset air into the furnace (10) such that the offset air is directed away from the clustered fuel injected into the furnace (10) and towards the walls of the furnace (10), a close coupled overfire air nozzle (78) mounted in the windbox ( 20) and operative for injecting close coupled overfire air into the furnace (10), and a separated overfire air nozzle (90) mounted in the window (20) and operative for injecting separated overfire air into the furnace (10).
Abstract translation: 一种特别适用于化石燃料燃烧炉（10）的聚簇同心切线燃烧系统（12）以及一种操作配备有集束同心切向燃烧系统（12）的这种炉子（10）的方法。 集束同心切线点火系统（12）包括风箱（20），安装在风箱（20）中的第一燃料喷嘴群（38,40）并且用于将集料燃料喷射到炉（10）中，以便产生 其中具有第一富燃料区，安装在所述风箱（20）中的第二燃料喷嘴簇（68,70），用于将集料燃料喷入所述炉（10）中，以便在其中形成第二富燃区， 安装在所述风箱（20）中并且用于将偏置空气喷射到所述炉（10）中的偏置空气喷嘴（56），使得所述偏移空气被引导离开喷射到所述炉（10）中的所述聚集燃料并且朝向 炉子（10），安装在风箱（20）中并且用于将紧密耦合的过火空气注入炉子（10）中的紧密联接的超燃空气喷嘴（78）和安装在窗户中的分开的过火空气喷嘴（90） （20），并且用于将分离的过热空气喷射到炉（10）中。
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公开(公告)号：US5003891A
公开(公告)日：1991-04-02
申请号：US485087
申请日：1990-02-26
Applicant: Shozo Kaneko , Masaaki Kinoshita
Inventor： Shozo Kaneko , Masaaki Kinoshita
CPC classification number: B07B7/083 , B02C23/32 , F23K1/00 , B02C2015/002 , F23C2201/101 , F23K2201/10
Abstract: The known pulverized coal combustion method including the steps of separating pulverized coal mixture gas ejected from a vertical type coal grinder into thick mixture gas and thin mixture gas by a distributor, and injecting these thick and thin mixture gases, respectively, through separate burner injecting ports into a common furnace to make them burn, is improved so as to reduce both an unburnt content in the ash and a nitrogen oxide concentration in exhaust gas while maintaining an excellent ignition characteristic. The improvements reside in that an air-to-fuel ratio of the thick mixture gas is regulated to within the range of 1-2, while an air-to-fuel ratio of the thin mixture gas is regulated to within the range of 3-6, and the range of a degree of pulverization of the pulverized coal is regulated to 100 mesh residue 1.5% or less. The degree of pulverization of the pulverized coal fed to the distributor is regulated either by adjusting the rotational speed of a rotary type classifier in the grinder or by adjusting the angles formed between classifying vanes, rotating about the axis of the rotary type classifier, and the direction of rotation.
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公开(公告)号：US10012382B2
公开(公告)日：2018-07-03
申请号：US14835793
申请日：2015-08-26
Applicant: ALSTOM Technology Ltd
Inventor： Thomas Hilber , Bernd Greiner , Hans-Peter Schommer , Noel Francon , Helmut Jaiser
CPC classification number: F23K3/02 , F23C5/08 , F23C6/047 , F23C7/006 , F23C2201/101 , F23K2203/006 , F23K2203/201
Abstract: A combustion system having a furnace defining a combustion chamber includes a first burner disposed at an upper elevation of the combustion chamber and a second burner and a third burner disposed at a lower elevation of the combustion chamber. A first duct extends vertically to convey therein a fuel flow of gas and pulverized fuel. A second duct branches from the first duct to the first burner to convey a first portion of the fuel flow, which is fuel lean, to define a fuel lean flow, wherein a second portion of the fuel flow passes through the first duct as a fuel rich flow. A third duct includes one end disposed longitudinally within the first duct. An impeller is disposed within the first duct upstream of the branching of the second duct and downstream of the one end of the third duct disposed in the first duct. The impeller includes a plurality of blades to direct outwardly the pulverized fuel of the fuel rich flow to provide a fuel reduced content flow passing through the second duct to the second burner, and a fuel concentrated content flow passing through first duct to the first burner.
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公开(公告)号：US09982885B2
公开(公告)日：2018-05-29
申请号：US14741219
申请日：2015-06-16
Applicant: Honeywell International Inc.
Inventor： Curtis L. Taylor , Joseph S. F. Goh , Brad Patterson , Marek Scholler
CPC classification number: F23C9/06 , F23C7/06 , F23C2201/101 , F23C2202/30 , F23C2900/09002 , F23D14/64 , F23J15/00
Abstract: Devices, methods, and systems for utilizing a burner with a combustion air driven jet pump are described herein. One burner apparatus includes a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smaller diameter than the diameter of the inlet.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20170038065A1
公开(公告)日：2017-02-09
申请号：US15222167
申请日：2016-07-28
Applicant: Breen Energy Solutions
Inventor： Bernard P. Breen , Chetan Chothani , Alan DePaoli , Charles Lockert
CPC classification number: F23D91/00 , F23C5/08 , F23C6/047 , F23C2201/101 , F23J2215/101
Abstract: A method and improved furnace for reducing nitrogen oxide emissions from a furnace having a plurality of primary fuel injectors and a plurality of spaced apart over-fire air injectors positioned above the primary fuel injectors are disclosed. Injection of over-fire air produces zones of cooler combustion gasses containing over-fire air that separate zones of hot combustion gasses containing nitrogen oxides. Reburn fuel injectors inject a reburn fuel into the zones of hot combustion making the effluent combustion gases containing nitrogen oxides partially or totally fuel-rich in order to further reduce nitric oxide.
Abstract translation: 公开了一种用于减少来自具有多个主燃料喷射器的炉的氮氧化物排放的方法和改进的炉，以及位于主燃料喷射器上方的多个间隔开的过火空气喷射器。 喷射过火空气产生含有过火空气的较冷燃烧气体的区域，其分离含有氮氧化物的热燃烧气体区域。 再燃燃料喷射器将再燃燃料注入热燃烧区域，使含有部分或完全富含燃料的氮氧化物的废气燃烧气体进一步减少一氧化氮。
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公开(公告)号：US20160153657A1
公开(公告)日：2016-06-02
申请号：US14934221
申请日：2015-11-06
Applicant: ALSTOM Technology Ltd
Inventor： Thomas HILBER , Thomas WILD , Dragisa RISTIC , Noel FRANCON
CPC classification number: F23D91/04 , F23C7/02 , F23C2201/101 , F23C2900/06041 , F23D1/00 , F23D14/04 , F23D23/00 , F23D2201/20
Abstract: The present disclosure relates to a system and a method for combustion of solid fuels. The combustion system includes burners which supply a mixed flow of fuel and air through a fuel nozzle to the combustion chamber for example of a boiler. The mixed flow of fuel and primary air is supplied to the burner through a duct from a pulverizer where the fuel is grinded to the required finesse. The duct further bends in such a way that one portion is vertical with respect parallel to axis of the boiler 1 A-A is vertical duct and other portion is horizontal duct which is parallel to axis B-B of the fuel nozzle.
Abstract translation: 本公开涉及固体燃料的燃烧系统和方法。 燃烧系统包括燃烧器，燃烧器通过燃料喷嘴将燃料和空气的混合流提供给例如锅炉的燃烧室。 燃料和一次空气的混合流体通过管道从燃料被粉碎到所需的精细度的粉碎机供给燃烧器。 管道进一步弯曲，使得一部分相对于锅炉的轴线垂直.A-A是垂直管道，而其它部分是与燃料喷嘴的轴线B-B平行的水平管道。
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38.发明申请公开(公告)号：US20160146462A1
公开(公告)日：2016-05-26
申请号：US14550101
申请日：2014-11-21
Applicant: ALSTOM Technology Ltd
Inventor： Mitchell B. COHEN , Todd D. Hellewell
CPC classification number: F23J7/00 , F23C5/12 , F23C5/32 , F23C6/045 , F23C6/047 , F23C9/00 , F23C9/06 , F23C2201/101 , F23C2201/20 , F23C2201/301 , F23C2900/06041 , F23C2900/99004 , F23D1/00 , F23D14/20 , F23L7/007 , F23L9/04 , Y02E20/344
Abstract: A combustion apparatus includes a combustion chamber having multiple combustion zones. A first wind box is in communication with the first combustion zone to feed the fuel to be fed into the combustion chamber for initial combustion of the fuel within the first combustion zone. A second wind box has a reburner in communication with the second combustion zone. The reburner is configured to feed fuel, a reagent and a first portion of the flue gas to be recycled to the second combustion zone into the second combustion zone to reduce nitrogen oxide emissions of the apparatus. A third wind box is in communication with the third combustion zone to feed air to the third combustion zone to complete the combustion process.
Abstract translation: 燃烧装置包括具有多个燃烧区域的燃烧室。 第一风箱与第一燃烧区域连通，以将要进料到燃料室的燃料供给到第一燃烧区域内的燃料的初始燃烧。 第二风箱具有与第二燃烧区连通的再生器。 再造剂构造成将燃料，试剂和第一部分烟道气送入第二燃烧区进入第二燃烧区，以减少装置的氮氧化物排放。 第三风箱与第三燃烧区连通，以将空气送入第三燃烧区以完成燃烧过程。
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39.发明授权公开(公告)号：US09052106B2
公开(公告)日：2015-06-09
申请号：US13390881
申请日：2010-08-09
Applicant: Mikko Varonen , Tero Luomaharju
Inventor： Mikko Varonen , Tero Luomaharju
CPC classification number: F23C10/10 , F23C6/045 , F23C10/20 , F23C10/28 , F23C2201/101 , F23L7/007 , F23L9/02 , F23L9/04 , F23L2900/07001 , F23L2900/07007 , F23N2037/18 , F23N2037/26 , Y02E20/322 , Y02E20/344
Abstract: A method and an arrangement for optimizing combustion conditions in a fluidized-bed boiler, in which combustion gas is fed at two or more height levels, the first of which is a primary level (P) which is located at the height of a furnace bottom and the second is a secondary level (S) which is located above fuel feed height (F), above which secondary level (S) there can be still other combustion gas feed levels (T, . . . ). At least one combustion gas feed level (P, S, T, . . . ) is fed at different points of the furnace (11) in its horizontal direction with combustion gases having different oxygen contents such that zones of different oxygen content can be formed in the horizontal direction of the furnace (11).
Abstract translation: 一种用于优化流化床锅炉中的燃烧条件的方法和装置，其中燃烧气体以两个或更多个高度水平进给，其中第一个是位于炉底高度的初级（P） 第二是位于燃料供给高度（F）之上的次级（S），高于该次级（S）可以是其他燃烧气体供给水平（T ...）。 至少一个燃烧气体供给水平（P，S，T ...）在炉子（11）的不同点处沿其水平方向与具有不同氧含量的燃烧气体一起进料，使得可以形成不同氧含量的区域 在炉（11）的水平方向上。
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公开(公告)号：US20140272736A1
公开(公告)日：2014-09-18
申请号：US13833359
申请日：2013-03-15
Applicant: Fives North American Combustion, Inc.
Inventor： Thomas F. Robertson , Bruce E. Cain , John J. Nowakowski , Mark C. Hannum
CPC classification number: F23C9/00 , F23C5/08 , F23C6/02 , F23C6/047 , F23C9/08 , F23C2201/101 , F23C2202/50 , F23D23/00
Abstract: A low NOx combustion method includes steps of injecting reactants into a combustion chamber. A primary reactant stream, including fuel and combustion air premix, is injected from a premix burner port into the combustion chamber. A staged fuel stream is injected into the combustion chamber from a staged fuel injector port adjacent to the premix burner port. A stream of recirculated flue gas is injected into the combustion chamber from a flue gas injector port that is adjacent to the premix burner port and adjacent to the staged fuel injector port. In this manner, the stream of recirculated flue gas is injected into the combustion chamber unmixed with the primary reactant stream and unmixed with the staged fuel stream.
Abstract translation: 低NOx燃烧方法包括将反应物注入燃烧室的步骤。 包括燃料和燃烧空气预混合物的主要反应物流从预混合燃烧器口喷射到燃烧室中。 分段燃料流从与预混合燃烧器口相邻的分段燃料喷射器喷射入燃烧室。 再循环烟道气流从邻近预混合燃烧器端口并与分段燃料喷射器端口相邻的烟道气喷射器端口喷射到燃烧室中。 以这种方式，将再循环烟道气流注入到燃烧室中，与主反应物流混合，并与分级燃料流混合。
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