Methods and apparatus for combustion in high volatiles environments

    公开(公告)号:US06544029B2

    公开(公告)日:2003-04-08

    申请号:US09955719

    申请日:2001-09-19

    CPC classification number: F23M5/025 F23C6/045 F23D14/22 F23D14/32

    Abstract: Methods and apparatus for combusting a fuel with an oxidant are described, the apparatus comprising a ceramic burner block, the burner block having a back face and a front face. The burner block has at least one oxidant cavity in an upper portion of the burner block, and at least one fuel cavity in a lower portion of the burner block, each cavity extending from the back face to the front face. The at least one oxidant cavity has positioned therein a fuel supply conduit, the fuel supply conduit having a fuel supply conduit exit positioned a sufficient distance from the front face to allow combustion of at least a portion of fuel exiting the fuel supply conduit exit with at least some of the oxidant traversing the oxidant cavity, and the least one fuel cavity having connected thereto, near the back face, an oxidant conduit, thereby allowing mixing of a minor portion of the oxidant with the fuel.

    Hydraulically powered rail pre-heater
    2.
    发明授权
    Hydraulically powered rail pre-heater 有权
    液压动力轨道预热器

    公开(公告)号:US06460536B2

    公开(公告)日:2002-10-08

    申请号:US09796417

    申请日:2001-02-28

    CPC classification number: F23D14/34 E01B11/52 F23D14/38 F23K5/007 F23K2401/20

    Abstract: A hydraulically powered rail pre-heater for heating rail ends before they are welded together, which includes a blower driven by a hydraulic motor for producing a substantially constant flow of air, a source for propane gas or other combustible media to be regulated and mixed and then delivered to a torch for the application of a flame to the rail ends.

    Abstract translation: 一种用于在焊接在一起之前加热轨道端部的液压动力轨道预热器,其包括由用于产生基本上恒定的空气流量的液压马达驱动的鼓风机,用于调节和混合的丙烷气体或其他可燃介质源, 然后交付给火炬,将火焰施加到轨道端。

    Multi-stage combustion using nitrogen-enriched air
    4.
    发明授权
    Multi-stage combustion using nitrogen-enriched air 失效
    使用富氮空气进行多级燃烧

    公开(公告)号:US06790030B2

    公开(公告)日:2004-09-14

    申请号:US10295501

    申请日:2002-11-14

    Abstract: Multi-stage combustion technology combined with nitrogen-enriched air technology for controlling the combustion temperature and products to extend the maintenance and lifetime cycles of materials in contact with combustion products and to reduce pollutants while maintaining relatively high combustion and thermal cycle efficiencies. The first stage of combustion operates fuel rich where most of the heat of combustion is released by burning it with nitrogen-enriched air. Part of the energy in the combustion gases is used to perform work or to provide heat. The cooled combustion gases are reheated by additional stages of combustion until the last stage is at or near stoichiometric conditions. Additional energy is extracted from each stage to result in relatively high thermal cycle efficiency. The air is enriched with nitrogen using air separation technologies such as diffusion, permeable membrane, absorption, and cryogenics. The combustion method is applicable to many types of combustion equipment, including: boilers, burners, turbines, internal combustion engines, and many types of fuel including hydrogen and carbon-based fuels including methane and coal.

    Abstract translation: 多级燃烧技术结合富氮空气技术控制燃烧温度和产品,延长与燃烧产物接触的材料的维护和使用寿命,并减少污染物质,同时保持较高的燃烧和热循环效率。 燃烧的第一阶段通过用富氮空气燃烧大部分燃烧热来燃烧富含燃料。 燃烧气体中的能量的一部分用于执行工作或提供热量。 冷却的燃烧气体通过额外的燃烧阶段再加热,直到最后一个阶段处于或接近化学计量条件。 从每个阶段提取额外的能量以产生相对较高的热循环效率。 利用扩散,渗透膜,吸收和低温等空气分离技术,空气中充满了氮气。 燃烧方法适用于许多类型的燃烧设备,包括:锅炉,燃烧器,涡轮机,内燃机,以及包括甲烷和煤炭在内的氢和碳基燃料的许多类型的燃料。

    Methods and apparatus for burning fuel with low NOx formation

    公开(公告)号:US06565361B2

    公开(公告)日:2003-05-20

    申请号:US09888835

    申请日:2001-06-25

    Abstract: Improved methods and apparatus for burning fuel with low NOx formation are provided. A method of the invention for discharging a mixture of fuel gas and air into a furnace wherein the mixture is burned and flue gases having a low NOx content are formed includes the following steps. A first portion of the fuel gas is mixed with a first portion of the air to form a primary fuel gas-air mixture. The primary fuel gas-air mixture is discharged into a primary burning zone in the furnace from at least one discharge location surrounded by a wall which extends into the furnace. A second portion of the fuel and a second portion of the air are mixed to form a secondary fuel gas-air mixture. The secondary fuel gas-air mixture is discharged into a secondary burning zone in the furnace from at least one discharge location adjacent to an exterior side of the wall. The secondary fuel gas-air mixture is discharged at a velocity whereby the secondary fuel gas-air mixture is not ignited and burned until the mixture spreads over an exterior side of the wall, mixes with flue gases in the furnace and flows beyond the wall.

    Integral low NOx injection burner
    6.
    发明授权
    Integral low NOx injection burner 失效
    一体式低NOx注入燃烧器

    公开(公告)号:US06206686B1

    公开(公告)日:2001-03-27

    申请号:US09071270

    申请日:1998-05-01

    CPC classification number: F23C9/006 F23C9/08 F23D14/22 F23D14/66 Y02E20/348

    Abstract: A low NOx burner and related method are disclosed including the steps of supplying a first reactant stream and introducing a second reactant stream into the first reactant stream at a first point so as to produce co-flowing streams. This resulting fuel/oxidant stream is discharged into a furnace environment having inert combustion products substantially equilibrated to furnace temperature, so as to entrain the combustion products and mix them together with the co-flowing stream. The temperature of the co-flowing stream is increased by the entrained products until it ignites in a combustion region displaced from the first point. Thus ignition cannot occur until the reactant stream has been diluted by inert products of combustion, reducing both oxygen concentration and peak flame temperature, so as to suppress NOx production.

    Abstract translation: 公开了一种低NOx燃烧器和相关方法,其包括以下步骤:在第一点处供应第一反应物流并将第二反应物流引入第一反应物流中,以产生共流。 将所得到的燃料/氧化剂流排放到具有基本平衡于炉温的惰性燃烧产物的炉子环境中,以便夹带燃烧产物并将它们与共同流动物料混合在一起。 共同流动的温度由夹带的产物增加,直到其在从第一点移位的燃烧区域中点燃。 因此,直到反应物流被惰性惰性产物稀释后才能发生点火,降低氧气浓度和峰值火焰温度,以抑制NOx的产生。

    Combustion process for burning a fuel
    7.
    发明授权
    Combustion process for burning a fuel 失效
    用于燃烧燃料的燃烧过程

    公开(公告)号:US06196831B1

    公开(公告)日:2001-03-06

    申请号:US09388539

    申请日:1999-09-02

    CPC classification number: F23C7/00 F23C9/006 F23D14/20 F23D17/002

    Abstract: The invention relates to a combustion process for burning a fuel, in which the point of injection of each main oxidizer jet (7, 8) with respect to the point of injection of a fuel jet (4) closest to it is arranged a distance D away satisfying the following relation: D A > 5 ⁢   ⁢ and / or ⁢   ⁢ D B > 5 D being the minimum distance between the outer edge of the relevant oxidizer jet (7, 8) and the outer edge of the fuel jet (4) closest to it, at their respective points of injection, A and B being, respectively, the cross section of the main jet (7, 8) of the oxidizer and the cross section of the fuel jet, considered at their respective points of injection.

    Abstract translation: 本发明涉及一种用于燃烧燃料的燃烧过程,其中每个主要氧化剂射流(7,8)相对于最接近燃料喷射点(4)的喷射点的喷射点被设置为距离D 满足以下关系:D是相关氧化剂射流(7,8)的外边缘与最靠近它的燃料射流(4)的外边缘之间在其各自注射点A和B处的最小距离 分别是在其各自的注射点考虑的氧化剂的主喷射器(7,8)的横截面和燃料射流的横截面。

    Method for operating a burner and burner with stepped premix gas injection
    8.
    发明授权
    Method for operating a burner and burner with stepped premix gas injection 有权
    使用阶梯式预混合气体注入操作燃烧器和燃烧器的方法

    公开(公告)号:US06769903B2

    公开(公告)日:2004-08-03

    申请号:US10311248

    申请日:2003-04-11

    Abstract: The present invention relates to a method of operating a burner, which comprises at least one first fuel supply conduit (5) with a first group of fuel outlet openings (6), essentially arranged in the direction of a burner longitudinal axis (3), for a first premix fuel quantity and one or a plurality of second fuel supply conduits (7) with a second group of fuel outlet openings (8), essentially arranged in the direction of the burner longitudinal axis (3), for a second premix fuel quantity, it being possible to admit fuel to the second fuel supply conduits (7) independently of the first fuel supply conduit (5). In the method, both fuel supply conduits (5, 7) are operated with the same fuel. By means of the present method of operating a burner, optimum mixing conditions can be set even in the case of different loads, gas qualities or gas preheat temperatures.

    Abstract translation: 本发明涉及一种操作燃烧器的方法,该燃烧器包括至少一个具有第一组燃料出口(6)的第一燃料供应管道(5),其基本上沿燃烧器纵向轴线(3)的方向布置, 用于第一预混合燃料量和具有基本上沿着燃烧器纵向轴线(3)的方向布置的第二组燃料出口(8)的一个或多个第二燃料供应管道(7),用于第二预混合燃料 数量,可以独立于第一燃料供应管道(5)将燃料允许给第二燃料供应管道(7)。 在该方法中,两个燃料供应管道(5,7)都以相同的燃料运行。 通过本方法操作燃烧器,即使在不同负载,气体质量或气体预热温度的情况下,也可以设定最佳混合条件。

    Partial oxidation of hydrogen sulphide
    9.
    发明授权
    Partial oxidation of hydrogen sulphide 失效
    硫化氢的部分氧化

    公开(公告)号:US06638057B2

    公开(公告)日:2003-10-28

    申请号:US10168580

    申请日:2002-11-04

    Abstract: An air-oxygen hydrogen sulphide burner (108) fires into a furnace (102). The burner comprises a main passage for combustion-supporting gas containing air (112), a multiplicity of spaced apart outer elongate fluid-conducting open ended tubes extending in parallel with each other along the main passage, each of the outlet tubes surrounding at least at the distal end of the burner a respective inner elongate fluid-conducting open ended tube, the inner tubes extending in parallel with one another, a first inlet to the burner for oxygen or oxygen-enriched air, and a second inlet to the burner for feed gas containing hydrogen sulphide, the first inlet communicating with the inner tubs, and the second inlets communicating with the outer tubes.

    Abstract translation: 空气 - 氧化硫化氢燃烧器(108)射入炉(102)。 燃烧器包括用于燃烧支持气体的主通道,其包含空气(112),多个间隔开的外部细长流体导电开口管,其沿着主通道彼此平行延伸,每个出口管至少围绕 燃烧器的远端相应的内部细长流体导通开口管,内管彼此平行延伸,用于氧气或富氧空气的燃烧器的第一入口和用于进料的燃烧器的第二入口 含有硫化氢的气体,与内桶连通的第一入口,以及与外管连通的第二入口。

    Coherent jet system with single ring flame envelope
    10.
    发明授权
    Coherent jet system with single ring flame envelope 有权
    具有单环火焰包络的相干射流系统

    公开(公告)号:US06604937B1

    公开(公告)日:2003-08-12

    申请号:US10153669

    申请日:2002-05-24

    CPC classification number: C21C5/5217 C21C5/4606 F23D14/22 F23D14/32 Y02P10/216

    Abstract: A coherent jet lance and operating method wherein the need for a lance extension is eliminated using a single ring of ports to deliver flame envelope gases around the primary gas jets to maintain the gas jets coherent.

    Abstract translation: 一种连贯喷枪和操作方法,其中使用单个端口环来消除对喷枪延伸的需要,以将主要气体射流周围的火焰包围气体输送以保持气体射流相干。

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