公开(公告)号：US09909755B2

公开(公告)日：2018-03-06

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

IPC: F23C9/08 ,  F23R3/34 ,  F23C6/02 ,  F23D23/00 ,  F23C9/00 ,  F23C5/08 ,  F23C6/04 ,  F23R3/04

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.

公开(公告)号：US20160146463A1

公开(公告)日：2016-05-26

申请号：US14902961

申请日：2014-07-08

Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.

Inventor： Kenji KIYAMA ,  Miki SHIMOGORI ,  Toshihiko MINE ,  Satoshi TADAKUMA ,  Kenichi OCHI ,  Koji KURAMASHI ,  Yusuke OCHI ,  Akira BABA ,  Yuki KONDO

IPC: F23L9/04 ,  F23C5/28 ,  F23C6/04

CPC classification number: F23L9/04 ,  F23C5/28 ,  F23C6/045 ,  F23C2201/101 ,  F23L9/02

Abstract: In accordance with the flow distribution of combustion gas including an unburned portion, an after-air port (AAP) arranged downstream of the two-stage combustion burner can effectively reduce the unburned portion by dividing as appropriate so as to avoid interaction, and by mixing together, two types of after-air having functions of linearity and spreading. As the configuration of this AAP, a primary nozzle for supplying primary after-air and having a vertical height greater than the horizontal width is provided in the center in the opening of the AAP, a secondary nozzle for supplying secondary after-air is provided in the opening outside of the primary nozzle, and one or more secondary after-air guide vanes having a fixed or variable tilt angle relative to the after-air port center axis are provided at the outlet of the said secondary nozzle to deflect and supply the secondary after-air horizontally to the left or right.

Abstract translation: 根据包括未燃烧部分的燃烧气体的流量分布，布置在两级燃烧器下游的后空气口（AAP）可以通过适当地分割来有效地减少未燃烧部分，以避免相互作用，并通过混合 一起，具有线性和扩展功能的两种类型的空气。 作为该AAP的结构，在AAP的开口部的中心设置有用于供给主要空气并具有大于水平宽度的垂直高度的主喷嘴，用于供给二次空气的二次喷嘴设置在 在主喷嘴外侧的开口以及相对于后空气口中心轴线具有固定或可变倾斜角的一个或多个二次空气导向叶片设置在所述次喷嘴的出口处以偏转和供应二次 水平向左或向右排空。

公开(公告)号：US20160061446A1

公开(公告)日：2016-03-03

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

IPC: F23N3/00 ,  F23B40/04 ,  F23C5/08 ,  F23D1/00

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.

Abstract translation: 具有限定燃烧室的炉的燃烧系统包括设置在燃烧室的上部的第一燃烧器和设置在燃烧室的下部高度处的第二燃烧器和第三燃烧器。 第一管道垂直延伸以在其中传送气体和粉碎燃料的燃料流。 第二管道从第一管道分支到第一燃烧器以输送燃料流的第一部分，燃料流是燃料稀薄的，以限定燃料贫化流，其中燃料流的第二部分作为燃料通过第一管道 丰富的流量。 第三管道包括纵向设置在第一管道内的一端。 叶轮设置在第二管道的分支的上游的第一管道内，并且设置在第一管道中的第三管道的一端的下游。 叶轮包括多个叶片，用于向外引导富燃料流的粉碎燃料，以将通过第二管道的燃料减少的内容物流提供给第二燃烧器，以及通过第一管道到第一燃烧器的燃料浓缩物流。

公开(公告)号：US08967996B2

公开(公告)日：2015-03-03

申请号：US13321913

申请日：2010-02-19

Applicant: Masazumi Tanoura ,  Kenji Muta ,  Shinichiro Asami ,  Eiji Kato ,  Tadashi Aoki ,  Koutaro Fujimura ,  Tetsuya Sawatsubashi ,  Chisato Tsukahara ,  Shinsaku Dobashi

Inventor： Masazumi Tanoura ,  Kenji Muta ,  Shinichiro Asami ,  Eiji Kato ,  Tadashi Aoki ,  Koutaro Fujimura ,  Tetsuya Sawatsubashi ,  Chisato Tsukahara ,  Shinsaku Dobashi

IPC: F23L9/04 ,  F22B21/40 ,  F22B37/02 ,  F23C5/32 ,  F23N3/00 ,  F23N5/00 ,  F23N5/08

CPC classification number: F23L9/04 ,  F22B21/40 ,  F22B37/025 ,  F23C5/32 ,  F23C2201/101 ,  F23N3/002 ,  F23N5/003 ,  F23N5/082 ,  F23N2021/10 ,  F23N2041/10

Abstract: The combustion controller controls the fuel and air that are supplied to the combustion furnace for burning substances, and addresses the aforementioned object by including: fuel supply unit for supplying fuel and air into the combustion furnace; air supply unit for supplying air into the combustion furnace, the air supply unit being disposed downstream of the fuel supply unit in the direction of flow of combustion air; concentration measuring unit for measuring the concentration of hydrogen sulfide of the combustion air by passing a measurement beam of light through the combustion air at a measurement position downstream of the fuel supply unit in the direction of flow of the combustion air; and control unit for controlling the amount of air supplied from the fuel supply unit based on a measurement result provided by the concentration measuring unit.

Abstract translation: 燃烧控制器控制供给燃烧炉燃烧物质的燃料和空气，并且通过包括用于向燃烧炉供给燃料和空气的燃料供给单元来解决上述目的， 空气供应单元，用于向燃烧炉供应空气，空气供应单元设置在燃料供应单元的沿燃烧空气流动方向的下游; 浓度测量单元，用于通过在燃料供给单元的下游的燃料空气的流动方向上的测量位置处使测量光通过燃烧空气来测量燃烧空气的硫化氢浓度; 以及控制单元，用于基于由浓度测量单元提供的测量结果来控制从燃料供应单元供应的空气量。

公开(公告)号：US20140065561A1

公开(公告)日：2014-03-06

申请号：US13845001

申请日：2013-03-17

Applicant: Jianwen Zhang ,  Fei Chen ,  Gongquan Liu ,  Xiang Zhang

Inventor： Jianwen Zhang ,  Fei Chen ,  Gongquan Liu ,  Xiang Zhang

IPC: F23C5/28 ,  F23D1/00 ,  F23K1/00 ,  F23D23/00 ,  F23K3/02

CPC classification number: F23C5/28 ,  F23C5/32 ,  F23C6/047 ,  F23C2201/101 ,  F23D1/00 ,  F23D1/005 ,  F23D23/00 ,  F23K1/00 ,  F23K3/00 ,  F23K3/02 ,  F23K2201/10 ,  F23K2201/30 ,  F23K2203/105 ,  Y02E20/344

Abstract: A tangentially-fired furnace for the burning of anthracite is disclosed. The furnace may contain a boiler with a chamber having four corners. Four burner groups located at the four corners may be configured to eject pulverized coal flow into the chamber for combustion, in order to form a single fireball substantially at the center of the chamber during combustion. Each burner group may contain a first burner which includes primary-air/rich-portion nozzles for ejecting rich-portion coal flow into a lower section of the chamber, and a second burner which includes primary-air/thin-portion nozzles for ejecting thin-portion coal flow into a higher section of the chamber.

Abstract translation: 公开了一种用于燃烧无烟煤的切向燃烧炉。 炉子可以包含具有四个角部的室的锅炉。 位于四个角落处的四个燃烧器组可以被配置成将粉煤流喷射到室中进行燃烧，以便在燃烧期间基本上在室的中心形成单个火球。 每个燃烧器组可以包括第一燃烧器，其包括用于将富含部分煤流喷射到室的下部的一次空气/富含部分喷嘴，以及包括用于喷射薄的一次空气/薄部分喷嘴的第二燃烧器 - 部分煤流入室的较高部分。

公开(公告)号：US20140057215A1

公开(公告)日：2014-02-27

申请号：US13994567

申请日：2011-12-16

Applicant: Konrad Jerzy Kuczynski ,  David James Adams

Inventor： Konrad Jerzy Kuczynski ,  David James Adams

IPC: F23N3/00 ,  F23L9/00 ,  F23L7/00

CPC classification number: F23L9/00 ,  F23C6/047 ,  F23C2201/101 ,  F23L7/00 ,  F23L7/007 ,  F23L9/04 ,  F23L2900/07003 ,  F23N3/002 ,  F23N5/242 ,  F23N2005/181 ,  F23N2037/16 ,  F23N2037/28 ,  Y02E20/344

Abstract: A combustion furnace and a method of its operation are described. The furnace comprises a chamber defining a combustion volume having at least one primary inlet for fuel and combustion supporting gases and at least one primary outlet for combustion product gases, which chamber is provided with one or more additional ports, for example in fluid communication with a supply of gas for secondary gas flow, allowing for secondary gas flow into and/or out of the combustion volume.

Abstract translation: 描述了燃烧炉及其操作方法。 炉子包括限定燃烧体积的室，其具有用于燃料和燃烧支持气体的至少一个主入口和用于燃烧产物气体的至少一个主出口，该室设置有一个或多个附加端口，例如与 供应用于二次气流的气体，允许二次气体进入和/或流出燃烧体积。

公开(公告)号：US20130319301A1

公开(公告)日：2013-12-05

申请号：US13979340

申请日：2012-01-12

Applicant: Hirofumi Okazaki ,  Koji Kuramashi ,  Hideo Okimoto ,  Akihito Orii ,  Kenichi Ochi

Inventor： Hirofumi Okazaki ,  Koji Kuramashi ,  Hideo Okimoto ,  Akihito Orii ,  Kenichi Ochi

IPC: F23D11/38 ,  F23D1/00 ,  F23K5/20 ,  B05B17/00

CPC classification number: F23D11/38 ,  B05B17/00 ,  F23C1/10 ,  F23C2201/101 ,  F23D1/005 ,  F23D2900/11001 ,  F23K5/20

Abstract: A spray nozzle is provided with upper and lower channels and from respective surfaces, the two channels form a cross shape, and become a fuel spray hole by communication of an intersecting part. A guide member is provided, in contact with the upstream-side channel, in a position overlapped with the intersecting part with respect to the spray direction of the spray nozzle. Spray fluid is branched with the guide member from the fuel fluid duct connected to the spray nozzle, passes through the upstream-side channel, to the intersecting part, and is sprayed. The spray fluid forms opposed flows toward the intersecting part in the upstream-side channel to collide with each other at an obtuse angle of 90° or greater, then is sprayed from the intersecting part, to form a thin fan-shaped liquid film. The liquid film is divided by a shearing force from the peripheral gas, atomized into spray particles.

Abstract translation: 喷嘴设有上通道和下通道，并且从相应的表面设置，两个通道形成十字形，并且通过相交部分的连通而成为燃料喷射孔。 与上游侧通道接触地设置有与相对于喷嘴的喷射方向与交叉部分重叠的位置的引导部件。 喷射流体通过引导构件从连接到喷嘴的燃料流体管道分支，穿过上游侧通道到达交叉部分，并被喷射。 喷射流体朝向上游侧通道中的交叉部分形成相反的流动，以90°或更大的钝角相互碰撞，然后从交叉部分喷射，形成薄的扇形液体膜。 液体膜被来自外围气体的剪切力除以雾化成喷雾颗粒。

公开(公告)号：US08430665B2

公开(公告)日：2013-04-30

申请号：US12036739

申请日：2008-02-25

Applicant: Roy Payne ,  Larry William Swanson ,  David Kelly Moyeda ,  Antonio Marquez

Inventor： Roy Payne ,  Larry William Swanson ,  David Kelly Moyeda ,  Antonio Marquez

IPC: F23D1/02 ,  F23N5/18

CPC classification number: F23C6/047 ,  F23C2201/101 ,  F23D17/00 ,  F23L9/04

Abstract: Combustion systems having reduced nitrogen oxide emissions and methods of using the same are disclosed herein. In one embodiment, a combustion system is provided. The combustion system includes a combustion zone, which includes a burner for converting a fuel, under fuel rich conditions, to a flue gas. An intermediate staged air inlet is downstream from the combustion zone, for supplying intermediate staged air to the flue gas and producing fuel lean conditions. A reburn zone is downstream from the intermediate staged air inlet for receiving the flue gas. A process for using the combustion system and a method of reducing NOX flowing into the reburn zone of a combustion system are also described herein.

Abstract translation: 本文公开了具有减少的氮氧化物排放的燃烧系统及其使用方法。 在一个实施例中，提供燃烧系统。 燃烧系统包括燃烧区，燃烧区包括用于在燃料丰富的条件下将燃料转化为烟道气的燃烧器。 中间分段空气入口在燃烧区的下游，用于将中间分级空气供给到烟道气中并产生贫燃条件。 再沸区位于用于接收烟道气的中间分段空气入口的下游。 本文还描述了使用燃烧系统的方法和减少流入燃烧系统的再沸区的NOX的方法。

公开(公告)号：US20120244479A1

公开(公告)日：2012-09-27

申请号：US13053364

申请日：2011-03-22

Applicant: Wei Zhou ,  David Moyeda

Inventor： Wei Zhou ,  David Moyeda

IPC: F23C9/00

CPC classification number: F23C9/003 ,  F23C6/045 ,  F23C2201/101 ,  F23C2202/30 ,  F23K1/00 ,  F23K2201/103 ,  F23L9/02 ,  F23L15/04 ,  F23N3/00 ,  Y02E20/348

Abstract: The present application and the resultant patent provide a combustion system. The combustion system may include a combustion chamber for combusting a flow of fuel and a flow of air to a flow of flue gases, an overfire air system in communication with the combustion chamber, and a flue gas return line in communication with the overfire air system such that a recycled flue gas flow mixes with an overtire air flow before entry into the combustion chamber.

Abstract translation: 本申请和所得专利提供了一种燃烧系统。 燃烧系统可以包括用于燃烧燃料流和空气流到烟道气的燃烧室，与燃烧室连通的过火空气系统以及与过火空气系统连通的烟气回流管线 使得回收的烟气流在进入燃烧室之前与过流空气流混合。

公开(公告)号：US20120148961A1

公开(公告)日：2012-06-14

申请号：US13390881

申请日：2010-08-09

Applicant: Mikko Varonen ,  Tero Luomaharju

Inventor： Mikko Varonen ,  Tero Luomaharju

IPC: F23J7/00

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 optimising combustion conditions in a fluidised-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，其中第一个是主要水平（P），其位于炉底的高度 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。