Gas burner with radiant retention head
    1.
    发明授权
    Gas burner with radiant retention head 失效
    气体燃烧器与辐射保持头

    公开(公告)号:US5562440A

    公开(公告)日:1996-10-08

    申请号:US392376

    申请日:1995-02-21

    申请人: Ian M. Rodgers

    发明人: Ian M. Rodgers

    IPC分类号: F23D14/08 F23D14/26 F23D14/12

    摘要: An inshot-gas burner for gas burning furnaces and other gas burning appliances has a flame retention head at the outlet formed from porous ceramic foam with a central opening through which a flame may project. A velocity reducing insert is located within the mixing chamber of the burner for reducing the velocity of the mixture received by the head in the area spaced about the central openings so that the head is radiant in operation. The porosity of the foam is in the order of 20 to 60 pores per inch. When radiant, the head permits the burner to operate at higher primary aerations, and provides faster burning velocity and thus lower residence time, and additionally provides a lower maximum temperature and a stable quiet flame. This permits the burner to emit low amounts of nitric oxide and nitrogen dioxide without increasing the amount of carbon monoxide emissions. The head may be formed from other materials and the velocity reduction may be provided by other structures, one of which is a composite head having restrictive discreet porting.

    摘要翻译: 气体燃烧炉和其他燃气器具的气体燃烧器具有在出口处形成的阻燃头,该多孔陶瓷泡沫具有中心开口,火焰可以通过该中心开口突出。 降低速度的插入件位于燃烧器的混合室内,用于降低在围绕中心开口间隔开的区域中由头部接收的混合物的速度,使得头部在工作中辐射。 泡沫的孔隙率为每英寸20至60个孔的数量级。 当辐射时,头部允许燃烧器在较高的初级曝气中操作,并且提供更快的燃烧速度并因此降低停留时间,并且另外提供较低的最高温度和稳定的安静的火焰。 这允许燃烧器排放少量的一氧化氮和二氧化氮,而不增加一氧化碳排放量。 头可以由其他材料形成,并且速度降低可以由其他结构提供,其中一个结构是具有限制性分离移植的复合头。

    Burner for a gas and air mixture
    3.
    发明申请
    Burner for a gas and air mixture 失效
    燃气和混合气体

    公开(公告)号:US20040091831A1

    公开(公告)日:2004-05-13

    申请号:US10473024

    申请日:2003-09-25

    IPC分类号: F23D014/12

    摘要: The invention is related to a burner for a gas/air mixture with an inlet (2) for the gas/air mixture, wherein a jet tube (7) is located downcurrent after the inlet (2), the jet tube (7) having a jacket surface with a plurality of breakthroughs (8) and wherein the jet tube (7) is surrounded radially by a means (9) for stabilisation of the flame.

    摘要翻译: 本发明涉及一种用于气体/空气混合物的燃烧器,其具有用于气体/空气混合物的入口(2),其中喷射管(7)在入口(2)之后位于下游,喷射管(7)具有 具有多个突破(8)的护套表面,并且其中所述喷射管(7)由用于稳定火焰的装置(9)径向地包围。

    Burner for gaseous fuels
    4.
    发明授权
    Burner for gaseous fuels 失效
    气体燃料燃烧器

    公开(公告)号:US06561795B1

    公开(公告)日:2003-05-13

    申请号:US09403991

    申请日:2000-01-06

    IPC分类号: F23D1458

    摘要: A burner fed with a hyper-stoichiometric mixture of air and gas-fuel comprises a diffuser on which rows of similarly shaped and evenly spaced parallel slots for the flow of said mixture are provided; said rows are separated from each other by an intermediate portion of diffuser having a substantially constant width and provided with further slots for the flow of said mixture, said further slots being non-parallel to said slots.

    摘要翻译: 供给空气和气体燃料的超化学计量混合物的燃烧器包括扩散器,在该扩散器上设置有用于所述混合物的流动的类似形状和均匀间隔的平行槽的行; 所述排通过扩散器的具有基本上恒定的宽度的中间部分彼此分离,并且具有用于所述混合物的流动的另外的狭槽,所述另外的狭槽不与所述狭槽平行。

    Ceramic foam low emissions burner for natural gas-fired residential
appliances
    5.
    发明授权
    Ceramic foam low emissions burner for natural gas-fired residential appliances 失效
    陶瓷泡沫低排放燃烧器用于天然气家用电器

    公开(公告)号:US5511974A

    公开(公告)日:1996-04-30

    申请号:US326915

    申请日:1994-10-21

    IPC分类号: F23D14/02 F23D14/16 F23D14/14

    摘要: An atmospheric reticulated ceramic foam burner which is retrofittable into existing residential heat exchanger designs has been developed to reduce NO.sub.x and CO emissions. It is operated in a blue flame or substantially radiant mode. The ceramic foam tile used is a three dimensional, web-like structure composed of ceramic struts and voids (or pores) which is permeable and rigid and can withstand the high temperatures found in domestic burners. The foam tile is positioned over a manifold, and is the outlet for the manifold. The manifold inlet is a venturi so that incoming gas is mixed with air in the correct range of proportions before passing through the foam. The pressures used, relative to tile porosity, are such that the gas-air mixture does not burn until it has passed all the way through the foam tile, resulting in a flame above the tile. Additional quantities of (secondary) air can be introduced around the burner to mix and burnout the products of combustion. Thus, by the time of burning, the air-gas mixture has been thoroughly mixed so that the flame can provide complete combustion, thus reducing emissions.In one modification of the invention one or more screens can be placed over the outlet of the foam tiles. In another modification, a series of holes pass through the tiles. Both modifications serve to further mix the air and gas before combustion.

    摘要翻译: 已经开发了可改造成现有住宅热交换器设计的大气网状陶瓷泡沫燃烧器,以减少NOx和CO排放。 它以蓝色火焰或基本辐射模式操作。 使用的陶瓷泡沫砖是由陶瓷支柱和空隙(或孔)组成的三维网状结构,其是可渗透和刚性的并且能够承受家用燃烧器中发现的高温。 泡沫砖位于歧管上方,并且是歧管的出口。 歧管入口是文氏管,使得进入的气体在通过泡沫之前以正确的比例范围与空气混合。 使用的压力相对于瓷砖孔隙度使得气体 - 空气混合物在其一直通过泡沫砖之前不燃烧,导致瓦上方的火焰。 可以在燃烧器周围引入额外的(次要)空气以混合和燃烧燃烧产物。 因此,在燃烧时,气体混合物已经充分混合,使得火焰能够提供完全的燃烧,从而减少排放。 在本发明的一个修改中,可以在泡沫砖的出口上方放置一个或多个筛网。 在另一个修改中,一系列的孔穿过瓦片。 两种改性均用于在燃烧之前进一步混合空气和气体。

    Radiant burner
    6.
    发明授权
    Radiant burner 失效
    辐射式燃烧器

    公开(公告)号:US5409375A

    公开(公告)日:1995-04-25

    申请号:US165945

    申请日:1993-12-10

    IPC分类号: F23D14/16 F23D14/12

    摘要: There is provided an improved radiant burner formed from a reticulated ceramic substrate. The porosity of the substrate is such as to permit combustible gas to pass therethrough. The substrate includes a plurality of intersecting grooves extending into one of its surfaces, thereby substantially eliminating cold spots on the radiant burner.

    摘要翻译: 提供了由网状陶瓷基板形成的改进的辐射燃烧器。 衬底的孔隙率使得可燃气体通过其中。 衬底包括延伸到其一个表面中的多个相交槽,从而基本上消除了辐射燃烧器上的冷点。

    Burner for a gas and air mixture
    7.
    发明授权
    Burner for a gas and air mixture 失效
    燃气和混合气体

    公开(公告)号:US06997701B2

    公开(公告)日:2006-02-14

    申请号:US10473024

    申请日:2002-03-25

    IPC分类号: F23D14/14

    摘要: A burner for a gas/air mixture with an inlet (2) for the gas/air mixture, wherein a jet tube (7) is located downstream of the inlet (2). The jet tube (7) has a jacket surface with a plurality of breakthroughs (8) and is surrounded radially a flame stabilizing device.

    摘要翻译: 一种用于气体/空气混合物的燃烧器,其具有用于气体/空气混合物的入口(2),其中喷射管(7)位于入口(2)的下游。 喷射管(7)具有带有多个突破(8)的护套表面,并且被径向地包围火焰稳定装置。

    Burner for combusting the anode exhaust gas stream in a PEM fuel cell power plant
    8.
    发明申请
    Burner for combusting the anode exhaust gas stream in a PEM fuel cell power plant 审中-公开
    用于在PEM燃料电池发电厂中燃烧阳极废气流的燃烧器

    公开(公告)号:US20050053816A1

    公开(公告)日:2005-03-10

    申请号:US10294344

    申请日:2002-11-15

    摘要: A catalyzed burner is operative to combust an anode exhaust stream from a polymer electrolyte membrane (PEM) fuel cell power plant. The catalysts coated onto the burner can be platinum, rhodium, palladium, or mixtures thereof. The burner includes open cells which are formed by a lattice, which cells communicate with each other throughout the entire catalyzed burner. The burner is able to combust hydrogen in the anode exhaust stream. The catalyzed burner has a high surface area wherein about 70-90% of the volume of the burner is preferably open pores, and the burner has a low pressure drop of about two to three inches water from the anode exhaust stream inlet to the anode exhaust stream outlet. The burner assembly operates at essentially ambient pressure and at a temperature of up to about 1,700° F. (927° C.). The burner can combust anode exhaust during normal operation of the fuel cell assembly. The burner is not adversely affected by gasoline, gasoline combustion products, or anode bypass gas, the latter of which is a reformed fuel gas which is tapped off of the fuel cell stack fuel inlet line.

    摘要翻译: 催化燃烧器用于燃烧来自聚合物电解质膜(PEM)燃料电池发电厂的阳极废气流。 涂覆在燃烧器上的催化剂可以是铂,铑,钯或其混合物。 燃烧器包括由格子形成的开孔,该细胞在整个催化燃烧器中彼此连通。 燃烧器能够在阳极废气流中燃烧氢。 催化燃烧器具有高的表面积,其中约70-90%的燃烧器的体积优选是开孔,并且燃烧器具有从阳极排气流入口到阳极排气口约2至3英寸水的低压降 流出口。 燃烧器组件在基本环境压力下工作,温度高达约1,700°F(927℃)。 在燃料电池组件的正常操作期间,燃烧器可以燃烧阳极排气。 燃烧器不受汽油,汽油燃烧产物或阳极旁路气体的不利影响,后者是燃料电池堆燃料入口管线上的重整燃料气体。

    High heat flux catalytic radiant burner
    9.
    发明授权
    High heat flux catalytic radiant burner 失效
    高热通量催化辐射燃烧器

    公开(公告)号:US5993192A

    公开(公告)日:1999-11-30

    申请号:US931825

    申请日:1997-09-16

    IPC分类号: F23D14/18 F23D14/12

    摘要: A high heat flux catalytic radiant burner of the present invention includes a housing with an inlet and an outlet end. A catalyst layer which has a coating disposed on a support is positioned between the two ends. The catalyst layer has a total specific surface area of 0.1 to 10 m.sup.2 /g. The support has a specific surface area of 1 m.sup.2 /g or less. The coating is a thin film of a nobel metal. A mixture of air and gas enters the housing though the inlet end and enters the catalyst layer where the gas is oxidized and releases heat such that the burner maintains operational firing rates of approximately 40 to 413 kBTU/hr ft.sup.2 and produces extremely low emissions.

    摘要翻译: 本发明的高热通量催化辐射燃烧器包括具有入口和出口端的壳体。 具有设置在支撑体上的涂层的催化剂层位于两端之间。 催化剂层的总比表面积为0.1〜10m 2 / g。 载体的比表面积为1m 2 / g以下。 涂层是诺贝尔金属薄膜。 空气和气体的混合物通过入口端进入壳体,并进入催化剂层,气体被氧化并释放热量,使得燃烧器保持约40至413kBTU / hr ft 2的操作燃烧速率并且产生极低的排放。

    Radiant burner surfaces and method of making same
    10.
    发明授权
    Radiant burner surfaces and method of making same 失效
    辐射式燃烧器表面及其制作方法

    公开(公告)号:US5782629A

    公开(公告)日:1998-07-21

    申请号:US589423

    申请日:1996-01-22

    申请人: John J. Lannutti

    发明人: John J. Lannutti

    IPC分类号: F23D14/16 F23D3/40

    摘要: A porous surface radiant burner assembly provided with a porous burner substrate having a surface including a layer of zircon and an overlying layer of zirconia formed in situ upon exposing the zircon layer to radiant burner operating conditions. The porous surface burner substrate can be in the form of a mat of randomly oriented fibers coated with zircon, a solid parted plate of zircon or a different ceramic provided with a coating layer of zircon, or a reticulated foam comprising either zircon or a different ceramic material coated with zircon. Preferably in the method of making the porous burner substrate, the zircon layer is merely exposed to the intended operating conditions of the radiant burner wherein during the initial degradation of the zircon layer, a continuous, adherent layer of zirconia is formed in overlying relationship to the layer of zircon to resist further degradation.

    摘要翻译: 一种多孔表面辐射燃烧器组件,其设置有多孔燃烧器基底,该多孔燃烧器基底具有包括锆层的表面和在将锆石层暴露于辐射燃烧器操作条件时原位形成的氧化锆上覆层。 多孔表面燃烧器基底可以是涂覆有锆石的随机取向纤维垫的形式,锆石的固体分隔板或设置有锆石涂层的不同陶瓷或包含锆石或不同陶瓷的网状泡沫 涂有锆石的材料。 优选地,在制造多孔燃烧器基材的方法中,锆石层仅暴露于辐射燃烧器的预期操作条件,其中在锆石层的初始降解过程中,形成连续的氧化锆粘附层,其与 锆石层可抵抗进一步降解。