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    Low nox inter-tube burner for roof-fired furnaces
    51.
    发明授权
    Low nox inter-tube burner for roof-fired furnaces 失效
    屋顶燃烧炉的低nox管间燃烧器

    公开(公告)号：US5546874A

    公开(公告)日：1996-08-20

    申请号：US362290

    申请日：1994-12-22

    Applicant: Bernard P. Breen ,  John P. Bionda, Jr. ,  James E. Gabrielson ,  Roger W. Glickert ,  Anthony Hallo

    Inventor： Bernard P. Breen ,  John P. Bionda, Jr. ,  James E. Gabrielson ,  Roger W. Glickert ,  Anthony Hallo

    IPC: F23C5/00 ,  F23C1/10

    CPC classification number: F23C5/00 ,  F23C2201/102 ,  F23C2900/05081

    Abstract: A method and apparatus for reducing the formation of nitrogen oxides during combustion in a roof-fired furnace is disclosed. By blocking at least some of the fuel nozzles associated with a roof-fired burner while leaving open the secondary air openings associated with the blocked fuel nozzles, reduction in NOX emissions from roof-fired furnaces is accomplished. This blocking results in the creation of a localized fuel-rich or just slightly fuel-lean environment near open fuel nozzles because part of the secondary air needed for combustion is being added at a location distant from where the initial combustion occurs. By creating a localized fuel-rich or slightly fuel-lean environment near the open fuel nozzles, the initial stages of combustion occur with little or no excess oxygen present. Because much of the fuel-bound nitrogen is liberated during the initial stages of combustion, it will preferentially react to form molecular nitrogen rather than nitrogen oxides because of the lack of available oxygen. Further, by the time all the secondary air is mixed with the pulverized coal to complete substantially the combustion, the flame temperature will have been sufficiently lowered by heat transfer to the boiler tubes that thermal formation of nitrogen oxides will be reduced. This invention works well in those roof-fired furnaces where individual burners are composed of multiple fuel nozzles and the fuel nozzles eject primary air and fuel between boiler tubes which form the furnace roof.

    Abstract translation: 公开了一种用于在屋顶燃烧炉中燃烧期间减少氮氧化物形成的方法和装置。 通过阻挡与屋顶燃烧的燃烧器相关联的至少一些燃料喷嘴，同时打开与堵塞的燃料喷嘴相关联的二次空气开口，从而实现了屋顶燃烧炉的NO x排放的减少。 这种阻塞导致在打开的燃料喷嘴附近产生局部富燃料或仅略微贫燃环境，因为燃烧所需的二次空气的一部分被添加在远离初始燃烧发生的位置。 通过在敞开的燃料喷嘴附近产生局部的富含燃料或稍微贫燃的环境，燃烧的初始阶段几乎没有或没有过量的氧存在。 由于大部分燃料结合的氮在燃烧的初始阶段被释放，由于缺乏可用的氧，它将优先反应形成分子氮而不是氮氧化物。 此外，当所有的二次空气与粉煤混合以完全燃烧时，通过传递到锅炉管的火焰温度将被充分降低，氮氧化物的热形成将被减少。 本发明在那些屋顶燃烧炉中工作良好，其中单个燃烧器由多个燃料喷嘴组成，并且燃料喷嘴在形成炉顶的锅炉管之间喷射一次空气和燃料。

    Ultra-low pollutant emission combustion method and apparatus
    52.
    发明授权
    Ultra-low pollutant emission combustion method and apparatus 失效
    超低污染物排放燃烧方法和装置

    公开(公告)号：US5158445A

    公开(公告)日：1992-10-27

    申请号：US682425

    申请日：1991-04-08

    Applicant: Mark J. Khinkis

    Inventor： Mark J. Khinkis

    IPC: F23C3/00 ,  F23C6/04 ,  F23C7/02 ,  F23R3/34

    CPC classification number: F23C6/047 ,  F23C3/006 ,  F23C7/02 ,  F23R3/346 ,  F23C2201/102

    Abstract: A method and apparatus for ultra-low pollutant emission combustion of fossil fuel is disclosed in which a first portion of fuel to be combusted is introduced into a primary combustion chamber together with primary combustion air, producing either a reducing or oxidizing combustion zone and a portion of water having a heat capacity equivalent to the heat capacity of a portion of primary combustion air. The first portion of fuel is combusted in the primary combustion chamber and the combustion products derived therefrom pass through an orifice into a secondary combustion chamber. Also introduced into the secondary combustion chamber is a second portion of fuel and secondary combustion air in an amount sufficient to complete combustion of the total amount of fuel in the apparatus. In addition, water is introduced into the secondary combustion chamber in an amount having a heat capacity equivalent to an amount of secondary combustion air. The products of combustion from the secondary combustion chamber are passed through an orifice into a dilution chamber into which dilution air is introduced, producing ultra-low pollutant emissions vitiated air. The vitiated air is subsequently discharged from the dilution chamber.

    Abstract translation: 公开了一种用于化石燃料的超低污染物排放燃烧的方法和装置，其中要燃烧的燃料的第一部分与一次燃烧空气一起被引入主燃烧室，产生还原或氧化燃烧区和部分 的水的热容量相当于一次燃烧空气的一部分的热容量。 燃料的第一部分在主燃烧室中燃烧，并且由此产生的燃烧产物通过孔进入二次燃烧室。 还引入二次燃烧室中的燃料和二次燃烧空气的第二部分的量足以完全燃烧装置中燃料的总量。 此外，以与二次燃烧空气量相当的热容量的量将水引入二次燃烧室。 来自二次燃烧室的燃烧产物通过孔口进入稀释空气进入稀释室，产生超低污染物排放的空气。 随后将稀释的空气从稀释室排出。

    Ultra-low pollutant emission combustion process and apparatus
    53.
    发明授权
    Ultra-low pollutant emission combustion process and apparatus 失效
    超低污染物排放燃烧过程及装置

    公开(公告)号：US5013236A

    公开(公告)日：1991-05-07

    申请号：US354837

    申请日：1989-05-22

    Applicant: Mark J. Khinkis

    Inventor： Mark J. Khinkis

    IPC: F23C3/00 ,  F23C6/04 ,  F23C7/02 ,  F23R3/34

    CPC classification number: F23R3/346 ,  F23C3/006 ,  F23C6/047 ,  F23C7/02 ,  F23C2201/102

    Abstract: An apparatus and method for ultra-low pollutant emission combustion of fossil fuel wherein an elongated cyclonic primary combustion chamber has a cross-sectional area about 4 to about 30 percent that of an elongated cyclonic secondary combustion chamber and a volume about 1 to about 20 percent the combined primary and secondary combustion chamber volume. A first fuel portion of about 1 percent to about 20 percent of the total fuel and primary combustion air in an amount selected from about 40 to about 90 percent and about 140 percent to about 230 percent of the stoichiometric requirement for complete combustion of the first fuel portion is introduced into the primary combustion chamber. A second fuel portion of about 80 to about 99 percent of the total fuel is introduced into the secondary combustion chamber with secondary combustion air in an amount of about 150 percent to about 260 percent of the stoichiometric requirement for complete combustion of the fuel. In preferred embodiments cyclonic flow is maintained through the combustor.

    Abstract translation: 用于化石燃料的超低污染物排放燃烧的装置和方法，其中细长的旋风主燃烧室的横截面积为细长旋风二次燃烧室的横截面积约4至约30％，体积约为1至约20％ 主燃烧室和二次燃烧室的组合。 总燃料和初级燃烧空气的约1％至约20％的第一燃料部分选自第一燃料完全燃烧的化学计量要求的约40至约90％和约140％至约230％ 部分被引入主燃烧室。 总燃料的约80％至约99％的第二燃料部分被引入二次燃烧室中，二次燃烧空气的量为燃料完全燃烧的化学计量要求的约150％至约260％。 在优选实施例中，通过燃烧器保持旋风流。

    Boiler or furnace for combustion of fuel in an air staged combustion mode
    54.
    发明公开
    Boiler or furnace for combustion of fuel in an air staged combustion mode 审中-公开
    锅炉或炉用于在空气分级操作模式燃烧的燃料

    公开(公告)号：EP3009741A1

    公开(公告)日：2016-04-20

    申请号：EP14188941.0

    申请日：2014-10-15

    Applicant: Stork Thermeq B.V.

    Inventor： Böhmer, Pieter Gerard ,  Bergmans, Stephan Cornelis Gerardus

    IPC: F23L9/04 ,  F23M5/08 ,  F23C7/00

    CPC classification number: F23M5/08 ,  F23C6/045 ,  F23C2201/102 ,  F23C2900/06041 ,  F23L9/04

    Abstract: The invention relates to a boiler or furnace (10) for combustion of fuel in an air staged combustion mode, comprising an enclosure (12) defining a combustion chamber (14), of which at least a part is provided with heat exchanging tubes (18) for generating a heated fluid, at least one burner (22) for combustion of fuel provided with a fuel supply (26) and a primary air supply (24), and a secondary air supply (32), and an outlet (28) for discharge of flue gas, wherein the secondary air supply (32) is positioned internally of the enclosure (12) downstream of the at least one burner (22).

    Abstract translation: 本发明涉及一种用于燃料的燃烧的锅炉或炉（10）中，以空气分级燃烧模式，其包括外壳（12）的 - 定义一个燃烧室（14），其中至少一个部分上设置有热交换管（18 ），用于产生加热的流体，至少一个燃烧器（22），用于具有燃料供给（26）和主气源（24），和一个二次空气供给（32燃料的燃烧），并且在出口（28） 对于烟道气的排出，worin二次空气供应（32）被定位在内部壳体（12）中至少一个燃烧器（22）的下游的。

    Combustion method and apparatus
    60.
    发明公开
    Combustion method and apparatus 审中-公开

    公开(公告)号：EP2290286A1

    公开(公告)日：2011-03-02

    申请号：EP10182623.8

    申请日：2005-05-19

    Applicant: Innovative Energy, Inc.

    Inventor： Schlote, Andrew ,  Langhorst, Phil Gerard

    IPC: F23C3/00 ,  F23C6/04 ,  F23L15/04

    CPC classification number: F23C6/04 ,  F23C3/006 ,  F23C2201/102 ,  F23C2900/03009 ,  F23J2900/15026 ,  F23L15/04 ,  Y02E20/348

    Abstract: A method comprises providing a combustion apparatus having an outer vessel and an inner conduit. The outer vessel has a first wall that defines an internal volume. The inner conduit is at least partially positioned within the internal volume and provides a fluid passageway that is in communication therewith. The method further comprises introducing oxygen into the internal volume in a manner such that the oxygen swirls within the internal volume and around the inner conduit. Furthermore, the method comprises introducing fuel into the internal volume, and combusting the fuel and oxygen at least partially therewithin. The combustion of the fuel and oxygen produces reaction products and the method further comprises discharging at least some of the reaction products from the internal volume via the fluid passageway of the inner conduit.

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