Perovskite catalysts enhanced combustion on porous media

    公开(公告)号:US10401023B2

    公开(公告)日:2019-09-03

    申请号:US15126681

    申请日:2015-03-17

    摘要: The effects of different perovskite catalysts, catalytic active materials with a crystal structure of ABO3, on matrix stabilized combustion in a porous ceramic media are explored. Highly porous silicon carbide ceramics are used as a porous media for a catalytically enhanced matrix stabilized combustion of a lean mixture of methane and air. A stainless steel combustion chamber was designed incorporating a window for direct observation of the flame within the porous media. Perovskite catalytic enhancement of SiC porous matrix with La0.75Sr0.25Fe0.6Cr0.35Ru0.05O3; La0.75Sr0.25Fe0.6Cr0.4O3; La0.75Sr0.25Fe0.95Ru0.05O3; La0.75Sr0.25Cr0.95Ru0.05O3; and LaFe0.95Ru0.05O3, for example, were used to enhance combustion. The flammability limits of the combustion of methane and air were explored using both inert and catalytically enhanced surfaces of the porous ceramic media. By coating the SiC porous media with perovskite catalysts it was possible to lower the minimum stable equivalence ratio.

    PEROVSKITE CATALYSTS ENHANCED COMBUSTION ON POROUS MEDIA

    公开(公告)号:US20170089571A1

    公开(公告)日:2017-03-30

    申请号:US15126681

    申请日:2015-03-17

    摘要: The effects of different perovskite catalysts, catalytic active materials with a crystal structure of ABO3, on matrix stabilized combustion in a porous ceramic media are explored. Highly porous silicon carbide ceramics are used as a porous media for a catalytically enhanced matrix stabilized combustion of a lean mixture of methane and air. A stainless steel combustion chamber was designed incorporating a window for direct observation of the flame within the porous media. Perovskite catalytic enhancement of SiC porous matrix with La0.75Sr0.25Fe0.6Cr0.35Ru0.05O3; La0.75Sr0.25Fe0.6Cr0.4O3; La0.75Sr0.25Fe0.95Ru0.05O3; La0.75Sr0.25Cr0.95Ru0.05O3; and LaFe0.95Ru0.05O3, for example, were used to enhance combustion. The flammability limits of the combustion of methane and air were explored using both inert and catalytically enhanced surfaces of the porous ceramic media. By coating the SiC porous media with perovskite catalysts it was possible to lower the minimum stable equivalence ratio.

    Reactor for Chemical-Looping Combustion
    38.
    发明申请
    Reactor for Chemical-Looping Combustion 审中-公开
    化学循环燃烧反应堆

    公开(公告)号:US20150241056A1

    公开(公告)日:2015-08-27

    申请号:US14631032

    申请日:2015-02-25

    摘要: Systems and methods are provided for enhancement of gaseous CLC in a fixed-bed process, marked by an increase in CO2 capture efficiency and oxygen carrier utilization, while reducing disadvantages of a conventional fixed-bed operation. The disclosed systems/methods provide a CLC fixed-bed reactor design in which the direction of the fuel gas is intermittently reversed during a single fuel oxidation step. In this reverse-flow mode, oxygen carrier reduction reactions are displaced over the ends of the reactor, which increases contact between fuel and oxidized solids and alleviates and/or mitigates problems of carbon deposition encountered by most oxygen carriers.

    摘要翻译: 提供了系统和方法,用于增强固定床工艺中的气态CLC,标志着CO2捕获效率和氧气载体利用率的增加,同时减少了常规固定床操作的缺点。 所公开的系统/方法提供了CLC固定床反应器设计,其中燃料气体的方向在单一燃料氧化步骤期间间歇地反转。 在这种反向流动模式中,氧载体还原反应在反应器的端部移动,这增加了燃料和氧化固体之间的接触,并减轻和/或减轻了大多数氧载体遇到的碳沉积问题。

    Apparatus and method for solid fuel chemical looping combustion
    39.
    发明授权
    Apparatus and method for solid fuel chemical looping combustion 有权
    固体燃料化学循环燃烧的装置和方法

    公开(公告)号:US09004911B1

    公开(公告)日:2015-04-14

    申请号:US13688260

    申请日:2012-11-29

    摘要: The disclosure provides an apparatus and method utilizing fuel reactor comprised of a fuel section, an oxygen carrier section, and a porous divider separating the fuel section and the oxygen carrier section. The porous divider allows fluid communication between the fuel section and the oxygen carrier section while preventing the migration of solids of a particular size. Maintaining particle segregation between the oxygen carrier section and the fuel section during solid fuel gasification and combustion processes allows gases generated in either section to participate in necessary reactions while greatly mitigating issues associated with mixture of the oxygen carrier with char or ash products. The apparatus and method may be utilized with an oxygen uncoupling oxygen carrier such as CuO, Mn3O4, or Co3O4, or utilized with a CO/H2 reducing oxygen carrier such as Fe2O3.

    摘要翻译: 本公开提供了一种使用燃料反应器的装置和方法,燃料反应器包括燃料部分,氧气载体部分和分离燃料部分和氧气载体部分的多孔分隔件。 多孔分隔器允许燃料部分和氧气载体部分之间的流体连通,同时防止特定尺寸的固体的迁移。 在固体燃料气化和燃烧过程中,保持氧气载体部分和燃料部分之间的颗粒偏析使得在任一部分产生的气体参与必要的反应,同时大大减轻与氧气载体与焦炭或灰分产物的混合相关的问题。 该设备和方法可以与氧分解氧载体如CuO,Mn 3 O 4或Co 3 O 4一起使用,或与CO 2 / H 2还原氧载体如Fe 2 O 3一起使用。

    Catalytic combustors
    40.
    发明授权
    Catalytic combustors 有权
    催化燃烧器

    公开(公告)号:US07278265B2

    公开(公告)日:2007-10-09

    申请号:US10672772

    申请日:2003-09-26

    IPC分类号: F23C13/08

    CPC分类号: F23R3/40 F23C13/00 F23C13/08

    摘要: A catalytic combustor for a combustion turbine that employs a protective nickel aluminide diffusion barrier on its inside and outside surfaces with a porous alumina, zirconia, titania, and/or ceria, and bond phase coating on the outside surface in which a catalyst is contained.

    摘要翻译: 一种用于燃气轮机的催化燃烧器,其在其内表面和外表面上具有多孔氧化铝,氧化锆,二氧化钛和/或二氧化铈,并且在其中包含催化剂的外表面上使用保护性镍铝化物扩散阻挡层。