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    Reducing Sulfur Gas Emissions Resulting from the Burning of Carbonaceous Fuels
    32.
    发明申请
    Reducing Sulfur Gas Emissions Resulting from the Burning of Carbonaceous Fuels 有权
    减少碳燃料燃烧产生的硫气排放

    公开(公告)号：US20080286703A1

    公开(公告)日：2008-11-20

    申请号：US11631046

    申请日：2005-04-08

    Applicant: Douglas C. Comrie ,  Vincent A. Vellella

    Inventor： Douglas C. Comrie ,  Vincent A. Vellella

    IPC: F23B90/00

    CPC classification number: C10L10/00 ,  B01D53/501 ,  B01D53/508 ,  B01D53/64 ,  B01D2251/304 ,  B01D2251/306 ,  B01D2251/404 ,  B01D2255/2047 ,  B01D2255/20738 ,  B01D2257/302 ,  B01D2257/602 ,  C10L9/10 ,  C10L10/02 ,  C10L10/04 ,  F23J7/00 ,  F23K1/00 ,  F23K2201/505

    Abstract: A process for burning coal or other carbonaceous fuels captures sulfur and other undesirable compounds are captured and retained in non-reactive ceramic-like form after the combustion phase. The process involves addition of multiple element alkali powders and/or sorbents preferably containing oxidizing anions such as nitrates and nitrites, preferably based on calcium. In various embodiments, the remediation materials when applied in a complex powder and/or liquid containing multiple elements, result in higher sulfur capture than the materials would otherwise achieve on an individual basis. In a preferred embodiment, the sorbents contain elements that minimize or lower the melting point of the ash. This leads to lowered cohesiveness and toughness of the ash so that less ash builds up on the boiler and better heat transfer is obtained.

    Abstract translation: 燃烧煤或其他含碳燃料的方法捕获硫，并且其它不期望的化合物在燃烧阶段之后被捕获并保持为非反应性陶瓷样形式。 该方法包括加入优选含有氧化性阴离子如硝酸盐和亚硝酸盐的多元素碱性粉末和/或吸附剂，优选基于钙。 在各种实施方案中，当应用于含有多种元素的复合粉末和/或液体中时，补救材料导致比单独以其他方式实现的材料更高的硫捕获。 在优选的实施方案中，吸附剂含有使灰分熔点最小化或降低的元素。 这导致灰分的凝聚力和韧性降低，使得较少的灰分积聚在锅炉上并且获得更好的热传递。

    Reduction of coal-fired combustion emissions
    33.
    发明申请
    Reduction of coal-fired combustion emissions 有权
    减少燃煤燃烧排放

    公开(公告)号：US20060034743A1

    公开(公告)日：2006-02-16

    申请号：US11204765

    申请日：2005-08-16

    Applicant: Jerrold Radway ,  Thomas Miller

    Inventor： Jerrold Radway ,  Thomas Miller

    IPC: B01D53/50

    CPC classification number: C10L9/10 ,  B01D53/508 ,  B01D53/64 ,  F23J2215/20 ,  F23K1/00 ,  F23K2201/101 ,  F23K2201/505

    Abstract: A process for mitigation of fouling deposits within a combustion zone, capturing of toxic metal emissions, and reduction of visible sulfur emissions attributable to sulfuric acid mist during coal combustion. SO3 formed during coal combustion is reduced by the addition to the coal of raw, unprocessed magnesium-containing minerals such as magnesite ore or brucite ore. The minerals are pulverized to a fine particle size and combined with pulverized coal to provide a mixture of the particles. The mixture is combusted and the ore particles calcine and decrepitate to very fine magnesium oxide particles that have a significant particle surface area. The magnesium oxide particles react with the SO3 produced during combustion of the coal and also capture toxic metals to reduce the quantity of undesirable stack discharge components.

    Abstract translation: 一种减少燃烧区内污垢沉积物的过程，捕获有毒金属排放物，以及减少煤燃烧过程中硫酸雾引起的可见硫排放。 在煤燃烧期间形成的SO 3通过添加到未加工的含镁矿物如镁砂矿石或水镁石矿石的煤中而减少。 将矿物粉碎至细粒度并与粉煤混合以提供颗粒的混合物。 混合物燃烧，矿石颗粒煅烧并破碎成具有显着颗粒表面积的非常细小的氧化镁颗粒。 氧化镁颗粒与煤燃烧期间产生的SO 3反应，并且还捕集有毒金属以减少不期望的堆放电组分的量。

    Low nitrogen oxides emissions from carbonaceous fuel combustion using three stages of oxidation
    36.
    发明授权
    Low nitrogen oxides emissions from carbonaceous fuel combustion using three stages of oxidation 有权
    通过三个阶段的氧化，碳氮燃料的低氮氧化物排放

    公开(公告)号：US6085674A

    公开(公告)日：2000-07-11

    申请号：US243501

    申请日：1999-02-03

    Applicant: Robert A. Ashworth

    Inventor： Robert A. Ashworth

    IPC: F23C1/02 ,  F23C5/32 ,  F23C6/04 ,  F23C7/00 ,  F23C9/00 ,  F23G5/00 ,  F23J7/00 ,  F23L7/00 ,  F23L9/02 ,  F23L9/04 ,  F23B5/00

    CPC classification number: F23B90/06 ,  F23C1/02 ,  F23C5/32 ,  F23C6/04 ,  F23C6/045 ,  F23C7/006 ,  F23C9/006 ,  F23G5/008 ,  F23J7/00 ,  F23L7/002 ,  F23L9/04 ,  F23C2201/10 ,  F23C2201/20 ,  F23C2900/99004 ,  F23K2201/501 ,  F23K2201/505 ,  Y02E20/348

    Abstract: A method and apparatus for reducing NO.sub.x emissions from the combustion of carbonaceous fuels using three stages of oxidation. In the first stage, a partial oxidation combustor is used to partially combust the fuel in the presence of heated 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. A second preheated combustion air is introduced into the second stage combustor to produce a reducing flue gas. A third combustion air is mixed with the flue gas in a third stage combustor to substantially complete the combustion process. Preheated steam may be added at any or all of the combustion stages. The stochiometric ratios at each stage of combustion are controlled to minimize overall NO.sub.x emissions to acceptable levels. An excess air cyclone-fired furnace modified to operate in a three-stage combustor mode by adding a preheated air system, with air introduction into the furnace at the cyclone barrel re-entrant throat location followed by overfire air introduction in the upper part of the furnace can be utilized to provide the three stages of combustion.

    Abstract translation: 一种用于通过三个阶段的氧化来减少碳质燃料的燃烧中的NOx排放的方法和装置。 在第一阶段，使用部分氧化燃烧器在存在加热的燃烧空气的情况下部分地燃烧燃料。 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。 将第二预热的燃烧空气引入第二级燃烧器中以产生还原烟道气。 在第三级燃烧器中将第三燃烧空气与烟道气混合以基本上完​​成燃烧过程。 可以在任何或所有燃烧阶段加入预热蒸汽。 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。 通过添加预热的空气系统改造成以三级燃烧器模式运行的多余的空气旋风火炉，在空气引入到旋风筒中的炉中进入喉部位置，随后在上部的空气中引入过度空气 炉子可以用来提供三个阶段的燃烧。

    Process for burning high ash particulate fuel
    37.
    发明授权
    Process for burning high ash particulate fuel 失效
    燃烧高灰分颗粒燃料的方法

    公开(公告)号：US5189964A

    公开(公告)日：1993-03-02

    申请号：US516155

    申请日：1990-04-30

    Applicant: John W. Rich, Jr.

    Inventor： John W. Rich, Jr.

    IPC: B03B9/00 ,  C10L5/00 ,  C10L10/00 ,  F22B31/00 ,  F23K1/00

    CPC classification number: F22B31/0084 ,  B03B9/005 ,  C10L10/02 ,  C10L5/00 ,  F23K1/00 ,  F23C2206/10 ,  F23K2201/101 ,  F23K2201/505

    Abstract: A continuous fluidized-bed combustion process for particulate carbonaceous feedstock of high ash content. The feedstock fuel is prepared from culm or mine tailings washed in a dense media and crushed to yield a fuel product having an ash content in a range of about 30 percent to about 50 percent, by weight. The feedstock fuel is mixed with fine particles of scavenging material, such as limestone or dolomite, and the resulting feedstock mixture is burned in a circulating fluidized-bed combustion chamber. A portion of the ash remaining after combustion is discharged out the bottom chamber, the remainder being carried with the combustion gases through a hot cyclone and heat exchangers for generating power. The ash within these gases is separated and recirculated through the fluidized bed, and the combustion gases are discharged.

    Abstract translation: 用于具有高灰分含量的颗粒碳质原料的连续流化床燃烧方法。 原料燃料由在致密介质中洗涤的矿渣或矿尾矿制备并粉碎以产生灰分含量在约30重量％至约50重量％范围内的燃料产品。 原料燃料与诸如石灰石或白云石的清除材料的细颗粒混合，并将所得原料混合物在循环流化床燃烧室中燃烧。 燃烧后残留的一部分灰分从底部室排出，其余部分由燃烧气体通过热旋风分离器和用于发电的热交换器运送。 这些气体中的灰分被分离并通过流化床再循环，并且燃烧气体被排出。

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