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    METHOD OF REDUCING FLUE GAS EMISSIONS AND A BOILER
    1.
    发明申请
    METHOD OF REDUCING FLUE GAS EMISSIONS AND A BOILER 审中-公开
    减少燃气排放和锅炉的方法

    公开(公告)号：US20160245510A1

    公开(公告)日：2016-08-25

    申请号：US15094154

    申请日：2016-04-08

    申请人： Andritz Oy

    发明人： Pasi MIIKKULAINEN ,  Lauri PAKARINEN

    IPC分类号： F23J15/00 ,  F22B21/40 ,  F22B21/34

    CPC分类号： F23J15/003 ,  B01D53/56 ,  B01D2251/2062 ,  B01D2251/2067 ,  F22B21/341 ,  F22B21/40 ,  F23G2209/101 ,  F23J2215/101 ,  Y02P80/154

    摘要： A method and a boiler for decreasing the amount of nitrogen oxides in flue gases of a boiler, which flue gases are generated in the combustion of fuels and air. The boiler has a water circulation system comprising superheaters and a furnace for combustion of fuel and for generating flue gases that contain nitrogen oxides, which flue gases mainly flow upwards in the furnace and further to the superheater zone and via other heat recovery surfaces of the boiler out of the boiler, and a nitrogen oxides reducing agent is introduced into the flue gases. The nitrogen oxides reducing agent is introduced into the flue gases prior to the superheater zone, after the temperature of the flue gases is decreased by at least one heat exchanger that is located upstream of the nose of the boiler and upstream of the introduction of the nitrogen oxides reducing agent.

    摘要翻译： 一种用于减少锅炉烟道气中的氮氧化物的量的方法和锅炉，其在燃料和空气的燃烧中产生烟道气。 锅炉具有水循环系统，其包括过热器和用于燃烧燃烧的炉和用于产生含有氮氧化物的烟道气，该烟道气主要在炉内向上流动，并且进一步向上流过过热区并且经由锅炉的其它热回收表面 排出锅炉，并将氮氧化物还原剂引入烟气中。 在过热器区域之前，将氮氧化物还原剂引入烟道气中，在烟道气体的温度降低至少一个位于锅炉鼻部上游的热交换器和引入氮气的上游 氧化还原剂。

    Method of reducing flue gas emissions and a boiler
    3.
    发明授权
    Method of reducing flue gas emissions and a boiler 有权
    减少烟气排放的方法和锅炉

    公开(公告)号：US09310075B2

    公开(公告)日：2016-04-12

    申请号：US13264516

    申请日：2010-04-14

    申请人： Pasi Mikkulainen ,  Lauri Pakarinen

    发明人： Pasi Mikkulainen ,  Lauri Pakarinen

    IPC分类号： B09B3/00 ,  F23J15/00 ,  B01D53/56 ,  F22B21/34 ,  F22B21/40

    CPC分类号： F23J15/003 ,  B01D53/56 ,  B01D2251/2062 ,  B01D2251/2067 ,  F22B21/341 ,  F22B21/40 ,  F23G2209/101 ,  F23J2215/101 ,  Y02P80/154

    摘要： The present invention relates to a method and a boiler for decreasing the amount of nitrogen oxides in flue gases of a boiler, which flue gases are generated in the combustion of fuels and air. The boiler has a water circulation system comprising superheaters (8) and a furnace (1) for combustion of fuel and for generating flue gases that contain nitrogen oxides, which flue gases mainly flow upwards in the furnace and further to the superheater zone and via other heat recovery surfaces of the boiler out of the boiler, and a nitrogen oxides reducing agent is introduced into the flue gases. It is essential that the nitrogen oxides reducing agent is introduced into the flue gases prior to the superheater zone, before which the temperature of the flue gases is decreased by means of at least one heat exchanger (15) that is located in the flue gas flow upstream of the introduction of the reducing agent, for obtaining a suitable temperature window in the flue gas flow in order to reduce nitrogen oxides.

    摘要翻译： 本发明涉及一种用于减少锅炉烟道气中的氮氧化物的量的方法和锅炉，该燃料和空气的燃烧产生烟道气。 锅炉具有水循环系统，其包括过热器（8）和用于燃烧燃料并用于产生含有氮氧化物的烟道气（1）的炉（1），该烟道气主要在炉中向上流动，并进一步向过热区域通过其他 将锅炉的热回收表面排出锅炉，并将氮氧化物还原剂引入烟道气中。 重要的是，在过热器区之前将氮氧化物还原剂引入烟道气中，在此之前，烟道气的温度通过位于烟气流中的至少一个热交换器（15）而降低 在引入还原剂的上游，用于在烟道气流中获得合适的温度窗口以减少氮氧化物。

    Process furnace
    8.
    发明授权
    Process furnace 失效
    工艺炉

    公开(公告)号：US5878699A

    公开(公告)日：1999-03-09

    申请号：US018859

    申请日：1998-02-05

    申请人： Daniel J. Barnett ,  Gregory B. Cargle ,  C. Steven Lancaster

    发明人： Daniel J. Barnett ,  Gregory B. Cargle ,  C. Steven Lancaster

    IPC分类号： F27D17/00 ,  C01B3/38 ,  F22B21/40 ,  F22B33/18 ,  F22B33/00

    CPC分类号： C01B3/384 ,  F22B21/40 ,  F22B33/18 ,  C01B2203/0811 ,  C01B2203/0816 ,  C01B2203/0866 ,  Y02P20/129

    摘要： A twin-cell furnace for process stream preheat and utility steam superheat. The furnace uses a pair of vertical radiant cells with top supported, bottom guided, single row, multiple pass vertical coils fired on opposite sides by floor-mounted burners. An overhead convection section is centered between the radiant cells. Induced and forced draft fans are placed over the convection section to draw combustion gas into the stack and supply air through an air preheater, between the convection section and the stack, and to the floor burners and supplemental convection section burners. Additional convection coils are positioned in the hip section between the radiant cells and the convection section. The furnace design has reduced plot space requirements, increased flexibility in heating multiple services, and allows more even heating of the radiant tubes, and easier radiant tube replacement.

    摘要翻译： 用于工艺流预热和效用蒸汽过热的双电池炉。 炉子使用一对垂直辐射单元，其具有顶部支撑的底部引导的单排多通道垂直线圈，通过地面安装的燃烧器在相对侧上被发射。 顶部对流部分在辐射单元之间居中。 诱导和强制通风扇放置在对流部分上，以将燃烧气体吸入堆叠中，并通过空气预热器，对流部分和堆叠之间以及地板燃烧器和补充对流段燃烧器供应空气。 额外的对流线圈位于辐射单元和对流区之间的臀部中。 炉设计减少了空间需求，增加了多个服务的加热灵活性，并且允许更均匀地加热辐射管，并且更容易地辐射管更换。

    Furnace radiant sections with vertical heat exchanger tubing, and convection section
    9.
    发明授权
    Furnace radiant sections with vertical heat exchanger tubing, and convection section 失效
    具有垂直热交换器管道和对流段的炉辐射段

    公开(公告)号：US5005530A

    公开(公告)日：1991-04-09

    申请号：US535408

    申请日：1990-06-08

    申请人： Frank W. Tsai

    发明人： Frank W. Tsai

    IPC分类号： C10G9/20 ,  F22B21/40 ,  F22B31/00 ,  F24H1/40

    CPC分类号： F24H1/40 ,  C10G9/20 ,  F22B21/40 ,  F22B31/00 ,  Y10T29/49387

    摘要： The method of combining two furnaces into one, each furnace having a lower radiant section that includes upright walls and horizontal heat exchanger tubes, and an upper convection section, the lower section having associated fuel burners, including removing the horizontal heat exchanger tubes from the lower section; extending the lower section upright walls vertically upwardly, and providing space between the vertically extended lower sections; providing top walls over the vertically extended lower sections, and providing vertically extending heat exchanger tubing and suspending the tubing vertically within the vertically extended lower radiant sections, to be heated by hot gases produced by combustion of fuel supplied via the burners; and providing and locating an upright convection section of the furnace in flow receiving communication with the lower sections via lateral passages therefrom.

    摘要翻译： 将两个炉子组合成一个的方法，每个炉子具有包括直立壁和水平换热器管的较低辐射部分，以及上部对流部分，下部具有相关联的燃料燃烧器，包括从下部排出水平热交换器管 部分; 垂直向上延伸下部垂直壁，并在垂直延伸的下部之间提供空间; 在垂直延伸的下部分上提供顶壁，并提供垂直延伸的热交换器管道，并将管道垂直悬挂在垂直延伸的下部辐射部分内，以由通过燃烧器供应的燃料的燃烧产生的热气体加热; 以及提供和定位所述炉的直立对流部分，其经由其中的侧向通道与下部部分流体接收连通。