Burner system and method for mixing a plurality of solid fuels
    3.
    发明申请
    Burner system and method for mixing a plurality of solid fuels 失效
    用于混合多种固体燃料的燃烧器系统和方法

    公开(公告)号:US20040139894A1

    公开(公告)日:2004-07-22

    申请号:US10348624

    申请日:2003-01-22

    申请人: Joel Vatsky

    IPC分类号: F23D001/00 F23C001/00

    摘要: A burner assembly cofires a primary solid fuel and a secondary solid fuel in a combustion zone of a boiler. The burner assembly includes a fuel injector that mixes the primary solid fuel and the secondary solid fuel prior to injection into the combustion zone of the boiler. The primary solid fuel may be pulverized coal, pulverized petroleum coke, or the like, while the secondary solid fuel may be a biomass fuel or refuse-derived fuel.

    摘要翻译: 燃烧器组件在锅炉的燃烧区中共同燃烧主固体燃料和辅助固体燃料。 燃烧器组件包括燃料喷射器,其在注入锅炉的燃烧区之前混合主要固体燃料和辅助固体燃料。 主要固体燃料可以是粉煤,粉碎的石油焦炭等,而二次固体燃料可以是生物质燃料或垃圾衍生燃料。

    Low nitrogen oxides emissions using three stages of fuel oxidation and in-situ furnace flue gas recirculation
    7.
    发明授权
    Low nitrogen oxides emissions using three stages of fuel oxidation and in-situ furnace flue gas recirculation 有权
    低氮氧化物排放采​​用三个阶段的燃料氧化和原位炉烟气再循环

    公开(公告)号:US06325002B1

    公开(公告)日:2001-12-04

    申请号:US09590408

    申请日:2000-06-08

    IPC分类号: F23J1100

    摘要: A method for reducing NOx emissions from the combustion of carbonaceous fuels using three stages of oxidation and second stage in-situ furnace flue gas recirculation. In the first stage, a partial oxidation combustor is used to partially combust the fuel in the presence of preheated combustion air. The fuel gas produced in the partial oxidation process is passed to a second stage partial oxidation combustor while molten slag is removed and disposed of. Preheated combustion air also is introduced into the second stage of combustion to produce a slightly reducing flue gas and is injected into the furnace in such a way as to create the desired in-situ furnace flue gas recirculation. In the upper part of the furnace a third combustion air is mixed with the flue gas in a third stage of combustion to substantially complete the combustion process. Preheated steam may be added to the first or second stages of combustion. The stoichiometric ratios at each stage of combustion are controlled to minimize overall NOx emissions to acceptable levels. Further, an existing excess air cyclone-fired boiler furnace may be modified to operate in a three-stage combustion mode. This is accomplished by adding a preheated air system that includes two added air injection points into the furnace, with air introduction at a cyclone barrel re-entrant throat that is located at the interface between the cyclone barrel and the furnace, followed by overfire air introduction into the upper part of the furnace.

    摘要翻译: 使用三个阶段的氧化和第二阶段原位炉烟道气再循环来减少燃烧碳质燃料的NOx排放的方法。 在第一阶段,使用部分氧化燃烧器在预热的燃烧空气的存在下部分地燃烧燃料。 在部分氧化过程中产生的燃料气体被移动到第二级部分氧化燃烧器,同时除去和处理熔渣。 预热的燃烧空气也被引入到第二阶段的燃烧中以产生稍微降低的烟气,并且以这样的方式注入炉中,以便产生所需的原位炉烟道气再循环。 在炉的上部,第三燃烧空气在第三燃烧阶段与废气混合,以基本完成燃烧过程。 可以将预热蒸汽加入第一或第二燃烧阶段。 控制每个燃烧阶段的化学计量比以将总体NOx排放量最小化到可接受的水平。 此外,现有的过量的空气旋风式燃烧锅炉炉可以被修改为在三级燃烧模式下操作。 这是通过添加一个预热的空气系统,其中包括两个添加的空气注入点到炉中,空气引入在位于旋风筒和炉之间的界面处的旋风筒桶入口喉部,然后是过度空气引入 进入炉的上部。

    PLANT, COMBUSTION APPARATUS, AND METHOD FOR REDUCTION OF NOx EMISSIONS
    9.
    发明申请
    PLANT, COMBUSTION APPARATUS, AND METHOD FOR REDUCTION OF NOx EMISSIONS 审中-公开
    工厂,燃烧装置和减少NOx排放的方法

    公开(公告)号:US20160146462A1

    公开(公告)日:2016-05-26

    申请号:US14550101

    申请日:2014-11-21

    摘要: A combustion apparatus includes a combustion chamber having multiple combustion zones. A first wind box is in communication with the first combustion zone to feed the fuel to be fed into the combustion chamber for initial combustion of the fuel within the first combustion zone. A second wind box has a reburner in communication with the second combustion zone. The reburner is configured to feed fuel, a reagent and a first portion of the flue gas to be recycled to the second combustion zone into the second combustion zone to reduce nitrogen oxide emissions of the apparatus. A third wind box is in communication with the third combustion zone to feed air to the third combustion zone to complete the combustion process.

    摘要翻译: 燃烧装置包括具有多个燃烧区域的燃烧室。 第一风箱与第一燃烧区域连通,以将要进料到燃料室的燃料供给到第一燃烧区域内的燃料的初始燃烧。 第二风箱具有与第二燃烧区连通的再生器。 再造剂构造成将燃料,试剂和第一部分烟道气送入第二燃烧区进入第二燃烧区,以减少装置的氮氧化物排放。 第三风箱与第三燃烧区连通,以将空气送入第三燃烧区以完成燃烧过程。

    Oxygen control system for oxygen enhanced combustion of solid fuels
    10.
    发明授权
    Oxygen control system for oxygen enhanced combustion of solid fuels 失效
    氧气控制系统,用于固体燃料的氧气增强燃烧

    公开(公告)号:US08578892B2

    公开(公告)日:2013-11-12

    申请号:US12138755

    申请日:2008-06-13

    IPC分类号: F23C10/00

    摘要: A combustion system and method for operating a combustion system, such as a furnace or boiler. The method includes providing a burner system having one or more burner elements configured to combust solid fuel and one or more oxygen providing devices configured to introduce oxygen into the near burner zone of one or more burner flames. A sensor is provided and arranged and disposed to measure a flame parameter in the near burner zone of the burner flame associated with one or more the burner elements. The flame parameter is measured with the sensor and an oxygen flow is determined in response to the measured flame parameter. Oxygen flow is introduced to one or more locations in the combustion system with the one or more oxygen providing devices.

    摘要翻译: 用于操作诸如炉子或锅炉的燃烧系统的燃烧系统和方法。 该方法包括提供具有一个或多个燃烧器元件的燃烧器系统,该燃烧器元件被配置为燃烧固体燃料和一个或多个氧气供给装置,其被配置为将氧气引入一个或多个燃烧器火焰的近燃烧器区域。 传感器被提供和布置和设置以测量与一个或多个燃烧器元件相关联的燃烧器火焰的近燃烧器区域中的火焰参数。 用传感器测量火焰参数,并根据测得的火焰参数确定氧气流量。 氧气流通过一个或多个氧供给装置被引入燃烧系统中的一个或多个位置。