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39 条记录 (耗时 0.032 秒)

    Method and apparatus to reduce flue gas NOx by injection of n-agent droplets and gas in overfire air
    34.
    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

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

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

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

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

    摘要： 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.

    摘要翻译： 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。

    Minimization of NOx emissions and carbon loss in solid fuel combustion
    37.
    发明授权
    Minimization of NOx emissions and carbon loss in solid fuel combustion 有权
    固体燃料燃烧中NOx排放和碳损失的最小化

    公开(公告)号：US06604474B2

    公开(公告)日：2003-08-12

    申请号：US09852913

    申请日：2001-05-11

    申请人： Vladimir Zamansky ,  Vitali Victor Lissianski ,  Peter Martin Maly ,  Yuri Mikhailovloh Mospan

    发明人： Vladimir Zamansky ,  Vitali Victor Lissianski ,  Peter Martin Maly ,  Yuri Mikhailovloh Mospan

    IPC分类号： F23B700

    CPC分类号： F23K1/04 ,  F23C6/047 ,  F23C9/003 ,  F23C2201/101 ,  F23C2202/20 ,  F23D1/00 ,  F23L9/04

    摘要： This invention discloses the synergistic integration of solid fuel combustion, low NOx control technologies (such as Low NOx Burners, reburning and Advanced Reburning) with partial in-duct gasification of coal or other solid fuels. For partial gasification, the solid fuel can be transported and injected by recycled flue gas stream at 600-800° F. in the reburning zone or in the upper section of the main combustion zone of a boiler. This allows the fuel to be preheated and partially pyrolyzed and gasified in the duct and then injected into the boiler as a mixture of coal, gaseous products, and char. Gasification increases coal reactivity and results in lower carbon-in-ash levels. As an option, the gaseous and solid products can be split using a cyclone separator. Splitting the gasified fuel stream will allow the volatile matter to be used for reburning and the fixed carbon to be injected into the high-temperature main combustion zone.

    摘要翻译： 本发明公开了固体燃料燃烧，低NOx控制技术（如低NOx燃烧器，再燃烧和高级再燃烧）与煤或其他固体燃料的局部管内气化的协同一体化。 对于部分气化，固体燃料可以在再燃烧区域或锅炉主燃烧区上部的600-800°F的再循环烟气流输送和注入。 这允许燃料在管道中被预热和部分热解并气化，然后以煤，气体产物和焦炭的混合物注入锅炉。 气化提高煤的反应性，并导致较低的灰分含量。 作为选择，气体和固体产品可以使用旋风分离器分离。 分解气化燃料流将允许挥发性物质用于再燃烧，并将固体碳注入高温主燃烧区。

    Methods and systems for operating low NOx combustion systems
    38.
    发明申请
    Methods and systems for operating low NOx combustion systems 有权
    运行低NOx燃烧系统的方法和系统

    公开(公告)号：US20060008757A1

    公开(公告)日：2006-01-12

    申请号：US10885267

    申请日：2004-07-06

    申请人： Vladimir Zamansky ,  Vitali Lissianski ,  Boris Eiteneer

    发明人： Vladimir Zamansky ,  Vitali Lissianski ,  Boris Eiteneer

    IPC分类号： F27B9/12

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

    摘要： 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.

    摘要翻译： 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。

    Integration of direct combustion with gasification for reduction of NOx emissions
    39.
    发明授权
    Integration of direct combustion with gasification for reduction of NOx emissions 有权
    将直接燃烧与气化相结合，以减少NOx排放

    公开(公告)号：US06694900B2

    公开(公告)日：2004-02-24

    申请号：US10014828

    申请日：2001-12-14

    申请人： Vitali Lissianski ,  George Rizeq ,  Vladimir Zamansky

    发明人： Vitali Lissianski ,  George Rizeq ,  Vladimir Zamansky

    IPC分类号： F23J1500

    CPC分类号： F23G7/07 ,  F23G5/027 ,  F23G5/16 ,  F23G5/30 ,  F23G7/001 ,  F23G7/10 ,  F23G2201/40 ,  F23L9/04

    摘要： The methods and systems of the present invention reduce NOx emissions in combustion systems, e.g., power plants, boilers, furnaces, incinerators, engines, and any combinations thereof. The inventive process decreases NOx emissions from stationary combustion sources and provides improved utilization of low-grade biomass and other waste fuels without slagging and fouling problems. The invention reduces NOx emissions while utilizing gasified fuels, including biomass and low-grade waste fuels, by gasifying solid fuels and injecting produced gas into a reburning zone of, for example, a boiler at relatively low temperatures and in relatively small amounts. By feeding the gas directly into a reburning zone, the need for gas cleaning is eliminated or substantially reduced as tars are burned in the flame and alkali species may be present at much lower levels than is the case with direct combustion applications.

    摘要翻译： 本发明的方法和系统减少燃烧系统中的NOx排放，例如发电厂，锅炉，炉，焚化炉，发动机及其任何组合。 本发明的方法降低了来自固定燃烧源的NOx排放，并提供了低等级生物质和其他废弃燃料的改进的利用，而没有结渣和结垢问题。 本发明通过气化固体燃料并将产生的气体注入例如锅炉的再燃烧区域，同时利用气化燃料（包括生物质和低等级的废燃料）来降低NOx排放，并在相对较低的温度和相对较少的量下进行。 通过将气体直接供给到再燃烧区域，由于焦油在火焰中燃烧，因此消除或显着减少对气体清洗的需要，并且碱性物质可以以比直接燃烧应用的情况低得多的水平存在。