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    Method for nitrogen oxide reduction in flue gas
    52.
    发明授权
    Method for nitrogen oxide reduction in flue gas 有权
    烟气中氮氧化物还原的方法

    公开(公告)号：US07374735B2

    公开(公告)日：2008-05-20

    申请号：US10454597

    申请日：2003-06-05

    Applicant: Larry William Swanson ,  Wei Zhou ,  David Kelly Moyeda ,  Roy Payne

    Inventor： Larry William Swanson ,  Wei Zhou ,  David Kelly Moyeda ,  Roy Payne

    IPC: B01D53/56

    CPC classification number: B01D53/56 ,  B01D53/62 ,  B01D53/79 ,  F23C2201/101 ,  F23C2201/30 ,  F23J7/00 ,  F23J2215/10 ,  Y02A50/2341

    Abstract: A method of decreasing the concentration of nitrogen oxides in a combustion gas flowing through a vessel including the steps of: generating a flue gas in a combustion zone of the vessel, the flue gas containing nitrogen oxides and carbon monoxide; providing overfire air into a burnout zone of the vessel from a first injector of the overfire air to oxidize at least some of the carbon monoxide in the flue gas; injecting a selective reducing agent concurrent with the overfire air at a level in the burnout zone downstream of the first injector of overfire air and downstream of the oxidization of the carbon monoxide; and reacting the selective reducing agent with the flue gas to reduce the nitrogen oxides.

    Abstract translation: 一种降低流过容器的燃烧气体中的氮氧化物的浓度的方法，包括以下步骤：在容器的燃烧区产生烟道气，所述烟道气含有氮氧化物和一氧化碳; 从所述过火空气的第一喷射器向所述容器的燃烧区域提供过热空气以氧化所述烟道气中的至少一些一氧化碳; 在超燃空气的第一喷射器下游的燃尽区域和一氧化碳的氧化下游，将过热空气同时喷射选择性还原剂; 并使选择性还原剂与烟道气反应以还原氮氧化物。

    Methods and systems for operating combustion systems
    53.
    发明授权
    Methods and systems for operating combustion systems 有权
    操作燃烧系统的方法和系统

    公开(公告)号：US07168947B2

    公开(公告)日：2007-01-30

    申请号：US10885267

    申请日：2004-07-06

    Applicant: Vladimir M. Zamansky ,  Vitali Victor Lissianski ,  Boris Nickolaevich Eiteneer

    Inventor： Vladimir M. Zamansky ,  Vitali Victor Lissianski ,  Boris Nickolaevich Eiteneer

    IPC: F23C7/00 ,  F23C99/00

    CPC classification number: F23C6/047 ,  F22B1/22 ,  F23C2201/101 ,  F23C2900/06041 ,  F23G7/07 ,  F23J2215/10 ,  F27B17/00

    Abstract: Methods and systems for reducing nitrogen oxides in combustion flue gas is provided. The method includes combusting a fuel in a main combustion zone such that a flow of combustion flue gas is generated wherein the combustion flue gas includes at least one nitrogen oxide species, establishing a fuel-rich zone, forming a plurality of reduced N-containing species in the fuel rich zone, injecting over-fire air into the combustion flue gas downstream of fuel rich zone, and controlling process parameters to provide conditions for the reduced N-containing species to react with the nitrogen oxides in the OFA zone to produce elemental nitrogen such that a concentration of nitrogen oxides is reduced.

    Abstract translation: 提供了减少燃烧烟气中氮氧化物的方法和系统。 该方法包括在主燃烧区燃烧燃料，使得产生燃烧烟气的流动，其中燃烧烟气包括至少一种氮氧化物种类，建立富燃料区，形成多个还原的含氮物质 在富燃区，向富燃区下游的燃烧烟气注入过火空气，并控制工艺参数，为还原的含氮物质与OFA区的氮氧化物反应生成元素氮 使得氮氧化物的浓度降低。

    Fuel injector for low NOx and enhanced flame stabilization
    55.
    发明申请
    Fuel injector for low NOx and enhanced flame stabilization 审中-公开
    燃油喷射器用于低NOx和增强的火焰稳定性

    公开(公告)号：US20060029895A1

    公开(公告)日：2006-02-09

    申请号：US11076550

    申请日：2005-03-08

    Applicant: Joel Vatsky

    Inventor： Joel Vatsky

    IPC: F23D11/00

    CPC classification number: F23C6/047 ,  F23C7/006 ,  F23C7/008 ,  F23C2201/101 ,  F23D1/00 ,  F23D2201/10 ,  F23D2207/00 ,  F23D2209/20 ,  F23M11/045

    Abstract: A fuel injector for use in a furnace is provided. The fuel injector is used to deliver pulverized fuel to a combustion chamber of a furnace. The structure of the fuel injector facilitates efficient combustion while stabilizing the combustion flame. As a result, a minimal amount of NOx and other undesirable byproducts are released into the atmosphere.

    Abstract translation: 提供一种用于炉中的燃料喷射器。 燃料喷射器用于将粉碎的燃料输送到炉的燃烧室。 燃料喷射器的结构有助于有效燃烧，同时稳定燃烧火焰。 结果，最少量的NO x x和其它不期望的副产物被释放到大气中。

    Method and apparatus to reduce flue gas NOx by injection of n-agent droplets and gas in overfire air
    58.
    发明申请
    Method and apparatus to reduce flue gas NOx by injection of n-agent droplets and gas in overfire air 有权
    通过在过火空气中注入n剂液滴和气体来减少烟道气NOx的方法和装置

    公开(公告)号：US20050106516A1

    公开(公告)日：2005-05-19

    申请号：US10705820

    申请日：2003-11-13

    Applicant: Roy Payne ,  Wei Zhou ,  Vitali Lissianski ,  Vladimir Zamansky ,  Larry Swanson

    Inventor： Roy Payne ,  Wei Zhou ,  Vitali Lissianski ,  Vladimir Zamansky ,  Larry Swanson

    IPC: F23L9/02 ,  B01D53/56 ,  B01D53/74 ,  F23C6/04 ,  F23C99/00 ,  F23D1/00 ,  F23J7/00 ,  F23L9/04 ,  F23C11/04

    CPC classification number: F23D1/00 ,  B01D53/56 ,  B01D53/565 ,  F23C6/047 ,  F23C2201/101 ,  F23J7/00 ,  F23J2215/101 ,  F23L9/04

    Abstract: A method of decreasing the concentration of nitrogen oxides in a combustion flue gas is disclosed in which the nitrogen reducing agent, either in gaseous form, as small particles, or as small droplets of an aqueous solution, is introduced together with the overfire air in such a way that it mixes with the products of primary combustion along with the overfire air. The nitrogen agent reduced NOx as it passes through the temperature regime that is optimum for the NOx reduction as overfire air and flue gas mix. The transition from low to high temperature effectively eliminates ammonia slip. Additionally, the nitrogen agent may be mixed with the overfire air stream in such a manner that it is optimally shielded from early mixing with the products of primary combustion, where a portion of the overfire air reacts initially with any residual carbon monoxide (CO) that would otherwise interfere with the NOx reduction chemistry.

    Abstract translation: 公开了一种降低燃烧烟道气中的氮氧化物浓度的方法，其中将氮气还原剂以气态形式，作为小颗粒，或作为小液滴的水溶液引入到这样的超燃空气中 它与初级燃烧产物和过火空气混合在一起。 当氮气通过最适于NOx还原的温度状态时，氮气还原NOx，作为过热空气和烟气组合。 从低温到高温的转变有效地消除了氨的滑移。 另外，氮气剂可以与过火空气流混合，使得其被最佳地屏蔽以免与初级燃烧产物的早期混合，其中一部分过热空气最初与任何残留的一氧化碳（CO）反应， 否则会干扰NOx还原化学。

    Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx)
    59.
    发明申请
    Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx) 审中-公开
    用于提高燃烧效率和减少氮氧化物（NOx）的基于尿素的混合方法

    公开(公告)号：US20040185399A1

    公开(公告)日：2004-09-23

    申请号：US10461567

    申请日：2003-06-13

    Inventor： Goran Moberg

    IPC: F23J007/00

    CPC classification number: F23L9/02 ,  F23C5/32 ,  F23C6/045 ,  F23C2201/101 ,  F23J7/00

    Abstract: A method for increasing combustion process and furnace efficiency and for reducing NOx formation, including the steps of: providing a furnace with a plurality of secondary air injection ducts, asymmetrically positioned in an opposing manner; injecting fuel with primary air through a first stage prior to injection of a second air; injecting secondary air through the plurality of reagent injection ducts; providing a staged combustion system including a furnace with asymmetrical injection ports introducing at least one reagent to the reactor by asymmetrical injection at predetermined, spaced apart locations; controlling the asymmetrical injection to produce a high velocity mass flow and a turbulence resulting in dispersion of the at least one reagent into the reaction system, wherein one of the at least one reagents is an NH3-producing compound; thereby providing increased reaction efficiency and reduced NOx formation in the combustion process.

    Abstract translation: 一种用于增加燃烧过程和炉子效率并用于减少NOx形成的方法，包括以下步骤：向炉子提供多个以对置方式非对称地设置的二次空气喷射管道; 在注入第二空气之前通过第一阶段向一次空气喷射燃料; 通过所述多个试剂注入管道注入二次空气; 提供一种分段燃烧系统，其包括具有不对称注入口的炉子，所述注入口通过在预定的间隔开的位置处的不对称注入将至少一种试剂引入反应器; 控制不对称注入以产生高速质量流和湍流，导致至少一种试剂分散到反应体系中，其中至少一种试剂中的一种是产生NH 3的化合物; 从而提高燃烧过程中的反应效率和降低NOx的形成。

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