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公开(公告)号：JPS6183804A
公开(公告)日：1986-04-28
申请号：JP20412584
申请日：1984-10-01
Applicant: Mitsubishi Heavy Ind Ltd
Inventor： SAKAI MASAYASU , TOKUDA KIMIYO , OGURI MASAHARU , NAKAJIMA FUMIYA
CPC classification number: F23C6/047 , F23C2201/101 , F23L7/007 , Y02E20/322 , Y02E20/344
Abstract: PURPOSE:To prevent the temperature in a burner part from rising, a to decrease generation of unburnt matter, and to protect a rear heat transfer area from erosion caused by fly ash, by mixing oxygen with air and by using the oxygen- enriched air for over-firing air only. CONSTITUTION:Oxygen 6 is mixed with over-firing air (OFA) only, in a method to burn fuel 5 such as pulverized solid fuel or slurry fuel with combustion air 1, which is divided into the primary air 2, the secondary air 3, and over-firing air 4. Unburnt matter is contained in combustion exhaust gas 10 form the outlet of a main burner zone 14, and oxygen 6 in the over-firing air 4 is consumed to burn the unburnt matter. The OFA4 of high oxygen concentration is very effective to burn the unburnt matter, and it is nearly completely burned out in a OFA zone 15. Besides, the flow rate of OFA4 can be decreased, because OFA4 is the air of high oxygen concentration. As a result, the rate of combustion exhaust gas 10 is decreased, and the velocity of combustion exhaust gas is also decreased when it passes through a steam superheater 11 provided at the outlet of a furnace 12, so that erosion caused by fly ash in the rear heat transfer area can be alleviated.
Abstract translation: 目的：为了防止燃烧器部件的温度上升，减少未燃烧物的产生，并且通过将氧气与空气混合并通过使用富氧空气来保护后部传热区域免受飞灰引起的侵蚀 过度燃烧的空气。 构成：氧气6仅与过燃空气（OFA）混合，在燃烧燃料5（例如粉碎的固体燃料或浆料燃料）的方法中，燃烧空气1分为一次空气2，二次空气3， 并且过度燃烧空气4.燃烧废气10中包含未燃烧物质，形成主燃烧器区域14的出口，并且过度燃烧空气4中的氧气6被消耗以燃烧未燃烧物质。 高氧浓度的OFA4非常有效地燃烧未燃烧物质，并且在OFA区域15中几乎完全燃烧。此外，由于OFA4是高氧浓度的空气，OFA4的流速可以降低。 结果，燃烧废气10的速度降低，并且当其通过设置在炉12出口处的蒸汽过热器11时，燃烧废气的速度也降低，使得在炉12中的飞灰引起的侵蚀 后排传热面积可以减轻。
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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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164.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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Patent Agency Ranking
166.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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167.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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公开(公告)号：US08714096B2
公开(公告)日：2014-05-06
申请号：US13390597
申请日：2010-08-03
Applicant: Akihito Orii , Hirofumi Okazaki , Yusuke Ochi
Inventor： Akihito Orii , Hirofumi Okazaki , Yusuke Ochi
Abstract: A pulverized coal boiler of the present invention is structured so as to form, among upper and lower after-air nozzles, an opening serving as an outlet of the lower after-air nozzle positioned on the upstream side is formed in a rectangular shape, a cylindrical section for defining a minimum flow path area of combustion air flowing through a flow path of the after-air nozzle is installed inside of the lower after-air nozzles along the flow path of the lower after-air nozzle, and a swirl blade for giving a swirl force to the combustion air flowing through the flow path of the after-air nozzles is installed inside of the cylindrical section, and the flow path of the lower after-air nozzles is formed so that a flow path area of the flow path of the after-air nozzles through which the combustion air flows from a position where the cylindrical section is installed toward the opening of each of the lower after-air nozzles is expanded.
Abstract translation: 本发明的粉煤锅炉的结构是，在上下排气喷嘴之间形成有位于上游侧的下排气喷嘴的出口的开口形成矩形， 用于限定流过后空气喷嘴的流路的燃烧空气的最小流路面积的圆柱形部分沿着下部后空气喷嘴的流动路径安装在下部后空气喷嘴内部，以及用于 向流经空气喷嘴的流路的燃烧空气施加涡旋力，安装在圆筒部内部，并且形成下部后空气喷嘴的流路，使得流路的流路面积 燃烧空气从安装有圆筒形部分的位置朝着每个下部后空气喷嘴的开口流过的后空气喷嘴被扩大。
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公开(公告)号：US20130340659A1
公开(公告)日：2013-12-26
申请号：US13981485
申请日：2011-02-22
Applicant: Yusuke Ochi , Kouji Kuramashi , Kenji Kiyama , Hirofumi Okazaki
Inventor： Yusuke Ochi , Kouji Kuramashi , Kenji Kiyama , Hirofumi Okazaki
Abstract: In a boiler having plurality of burners arranged on a furnace wall of a furnace, each burner includes a cylindrical fuel nozzle for injecting a mixture of fuel and carrier gas therefor into the furnace; one or more cylindrical air nozzles provided on the outer circumference of the nozzle for injecting combustion air into the furnace, and a wind box for supplying combustion air to the nozzles in common. The wind box is provided with openings through which combustion air flows in from one direction perpendicular to the axial direction of the burner, and is partitioned by a partition wall to form plurality of parallel flow paths for the air flowing in through the openings. Some of the plurality of flow paths are connected to an upper part of the combustion air nozzle, and the other flow paths are connected to a lower part of the nozzle.
Abstract translation: 在具有布置在炉的炉壁上的多个燃烧器的锅炉中，每个燃烧器包括用于将燃料和载气的混合物喷射到炉中的圆柱形燃料喷嘴; 设置在喷嘴的外周上的一个或多个圆柱形空气喷嘴，用于将燃烧空气注入炉中;以及风箱，用于将共同的燃烧空气供给喷嘴。 风箱设置有开口，燃烧空气通过该开口从垂直于燃烧器的轴向的一个方向流入，并且被分隔壁分隔开以形成用于通过开口流入的空气的多个平行流动路径。 多个流路中的一些连接到燃烧空气喷嘴的上部，其他流路连接到喷嘴的下部。
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