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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。

    CHEMICAL RECOVERY BOILER
    3.
    发明申请
    CHEMICAL RECOVERY BOILER 审中-公开

    公开(公告)号：US20180180284A1

    公开(公告)日：2018-06-28

    申请号：US15832400

    申请日：2017-12-05

    申请人： Valmet Technologies Oy

    发明人： Jussi Nyman ,  Taisto Rajala ,  Ari Saarela

    IPC分类号： F23J15/00 ,  F22G3/00 ,  F22G7/14 ,  F22B31/04 ,  F22B21/40

    CPC分类号： F23J15/003 ,  D21C11/12 ,  F22B21/40 ,  F22B31/045 ,  F22G3/006 ,  F22G7/14

    摘要： A chemical recovery boiler (100), including a furnace (1), comprising a front wall (2), a back wall (3), and the back wall (3) comprising a nose arch (4). The boiler further comprises at least one superheater (5) arranged in upper part of the furnace (1), and a screen pipe system (6), comprising an obliquely arranged screen pipe section (7) positioned before/under the at least one superheater (5) in the furnace (1). The obliquely arranged screen pipe section (7) comprises screen pipes (8) ascending (i) either from the front wall (2) to the back wall (3), and arranged to turn back in a turn (13) from the back wall (3) and extend obliquely upwards from the back wall (3), or (ii) from the back wall (3) to the front wall (2), and arranged to turn back in a turn (13) from the front wall (2) and extend obliquely upwards from the front wall (2). The screen pipe system (6) further comprises a vertically arranged screen pipe section (9) extending from the obliquely arranged screen pipe section (7). The screen pipes (8) of the vertically arranged screen pipe section (9) are arranged to extend parallel with the at least one superheater (5) in upper part of the furnace (1).

    Advanced fired heater unit for use in refinery and petro-chemical applications
    4.
    发明申请
    Advanced fired heater unit for use in refinery and petro-chemical applications 有权
    先进的燃烧加热器单元，用于炼油和石油化工应用

    公开(公告)号：US20080115741A1

    公开(公告)日：2008-05-22

    申请号：US11808973

    申请日：2007-06-14

    申请人： San Chhotray ,  Thomas M. Rudy ,  Dennis L. Juedes ,  James P. Norton ,  Charles E. Benson

    发明人： San Chhotray ,  Thomas M. Rudy ,  Dennis L. Juedes ,  James P. Norton ,  Charles E. Benson

    IPC分类号： F22B21/40 ,  C10G9/20

    CPC分类号： C10G9/20

    摘要： A fired heater unit is disclosed having at least one radiant heating section with each of the at least one radiant heating section having a heating element located therein. The unit includes a convection section operatively connected to the at least one radiant heating section, wherein the convection section having at least one vertically oriented convection tube. Each of the at least one convection tube being operatively connected to the at least one radiant heating section. Each of the at least one convection tube includes an inner tube having process fluid flowing therethrough, wherein the process fluid being heated by the at least one radiant heating section, and an outer tube extending along a predetermined portion of the inner tube, wherein the outer tube is spaced from the inner tube to form a flow path therebetween.

    摘要翻译： 公开了一种具有至少一个辐射加热部分的燃烧加热器单元，其中至少一个辐射加热部分中的每一个具有位于其中的加热元件。 该单元包括可操作地连接到至少一个辐射加热部分的对流部分，其中对流部分具有至少一个垂直取向的对流管。 所述至少一个对流管中的每一个可操作地连接到所述至少一个辐射加热部。 所述至少一个对流管中的每一个包括具有流过其中的工艺流体的内管，其中所述工艺流体被所述至少一个辐射加热部加热，以及沿着所述内管的预定部分延伸的外管， 管与内管间隔开，以形成它们之间的流路。

    Method of reducing flue gas emissions and a boiler
    8.
    发明授权
    Method of reducing flue gas emissions and a boiler 有权

    公开(公告)号：US10443839B2

    公开(公告)日：2019-10-15

    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 ,  B01D53/56

    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.

    Method of reducing flue gas emissions and a boiler
    9.
    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。