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    Furnace adapted to produce lime for use in downstream flue gas desulfurization process
    11.
    发明授权
    Furnace adapted to produce lime for use in downstream flue gas desulfurization process 有权
    适用于生产用于下游烟气脱硫工艺的石灰炉

    公开(公告)号：US06391266B1

    公开(公告)日：2002-05-21

    申请号：US09638694

    申请日：2000-08-14

    申请人： Lloyd L. Lavely, Jr.

    发明人： Lloyd L. Lavely, Jr.

    IPC分类号： B01D5350

    CPC分类号： C04B2/08 ,  B01D2251/404 ,  B01D2257/302 ,  C01F11/06 ,  C04B2/04 ,  C04B11/005 ,  C04B2290/20

    摘要： A limestone furnace calcination process involves injecting finely divided limestone particles into a zone in a furnace at which the temperature of the flue gas stream, as it passes through the zone, is above the minimum calcination temperature and below the minimum effective quicklime utilization/sulfation temperature. In conventional furnaces, the minimum calcination temperature, or the calcium carbonate decomposition temperature, ranges from about 1,365 to 1,430° F. The minimum effective quicklime utilization/sulfation temperature refers to the temperature below which the rate of quicklime sulfation of the lime produced by calcination of the limestone is sufficiently slow to result in negligible calcium sulfate formation on the resultant lime, and in conventional furnace applications ranges from 1,600 to 1,800° F. The zone is preferably sized such that limestone particles injected therein will remain at a temperature above the minimum calcination temperature, as the particles are carried downstream, for a period sufficient for substantially complete calcination of the limestone particles to lime while minimizing reactions between the resultant lime particles and sulfur dioxide to form calcium sulfate while the particles are in the furnace and to minimize sintering of the lime and complex calcium compound formation. The resultant lime particles may then be utilized in conventional downstream flue gas desulfurization processes including wet and semi-dry processes.

    摘要翻译： 石灰石炉煅烧过程包括将细碎的石灰石颗粒注入炉中的区域，在该区域中，烟道气流通过该区域的温度高于最低煅烧温度并低于最低有效生石灰利用/硫酸化温度 。 在常规炉中，最低煅烧温度或碳酸钙分解温度范围为约1365至1430°F。最低有效生石灰利用/硫酸化温度是指通过煅烧产生的石灰生石灰硫酸化速率的温度 的石灰石足够慢，导致在所得石灰上形成可忽略的硫酸钙，并且在常规炉应用范围为1600至1800°F。该区优选地尺寸使得其中注入的石灰石颗粒将保持在高于最小值 煅烧温度，随着颗粒在下游运载一段足以使石灰石颗粒完全煅烧成石灰的时间，同时最小化所得的石灰颗粒和二氧化硫之间的反应形成硫酸钙，同时颗粒在炉中并使烧结最小化 的石灰和复合钙 化合物形成。 所得到的石灰颗粒然后可用于常规的下游烟道气脱硫方法，包括湿法和半干法。

    Cementitious compositions and related systems and methods
    16.
    发明授权
    Cementitious compositions and related systems and methods 失效
    水泥组合物及相关系统和方法

    公开(公告)号：US08529689B2

    公开(公告)日：2013-09-10

    申请号：US13720467

    申请日：2012-12-19

    申请人： Reco Cement Products, LLC

    发明人： David A. Lisowski ,  John R. Miglautsch

    IPC分类号： C04B18/08

    CPC分类号： C04B11/005 ,  C04B28/14 ,  Y02W30/92 ,  Y02W30/95 ,  C04B7/02 ,  C04B14/06 ,  C04B14/22 ,  C04B14/26 ,  C04B14/28 ,  C04B18/08 ,  C04B18/162 ,  C04B22/064 ,  C04B2103/22

    摘要： Provided are cementitious compositions and related systems and methods. The cementitious compositions, or admixtures, according to the present invention generally comprise gypsum, a first alkaline component and glass. The admixture may further comprise fly ash, which is preferably obtained as a waste by-product from a coal-burning power plant. A method according to the present invention comprises an initial step of analyzing or receiving an analysis of a fly ash sample. Based at least in part on the analysis of the fly ash sample, a mix rate may be selected and an initial admixture can be formulated, which, when added to the fly ash sample, creates an alternative or additive to Portland cement for use in concrete, for example.

    摘要翻译： 提供水泥组合物和相关系统和方法。 根据本发明的水泥组合物或混合物通常包括石膏，第一碱性组分和玻璃。 混合物还可以包含飞灰，其优选作为来自燃煤发电厂的废副产物获得。 根据本发明的方法包括分析或接收飞灰样品的分析的初始步骤。 至少部分地基于飞灰样品的分析，可以选择混合速率并且可以配制初始混合物，当添加到飞灰样品中时，为波特兰水泥产生用于混凝土的替代或添加剂 ， 例如。

    Activated carbon as mercury release control agent in gypsum calcination
    17.
    发明授权
    Activated carbon as mercury release control agent in gypsum calcination 有权
    活性炭作为石膏煅烧中的汞释放控制剂

    公开(公告)号：US07507287B1

    公开(公告)日：2009-03-24

    申请号：US11937844

    申请日：2007-11-09

    申请人： Wenqi Luan

    发明人： Wenqi Luan

    IPC分类号： C04B11/00

    CPC分类号： C04B11/264 ,  C04B11/005

    摘要： A method for providing effective mercury release control during gypsum calcination is disclosed. The method comprises providing a reactor and gypsum containing mercury; providing a mercury sorbent, such as activated carbon and/or derivatives thereof in the reactor; and calcining the gypsum in the reactor to form stucco. The mercury contaminant present in the gypsum is sorbed by the mercury sorbent during the calcination process. The mercury content of the stucco is substantially similar in amount to the mercury content of the uncalcined gypsum.

    摘要翻译： 公开了一种在石膏煅烧期间提供有效的汞释放控制的方法。 该方法包括提供含有汞的反应器和石膏; 在反应器中提供汞吸附剂，例如活性炭和/或其衍生物; 并在反应器中煅烧石膏以形成灰泥。 存在于石膏中的汞污染物在煅烧过程中被汞吸附剂吸收。 灰泥中的汞含量与未煅烧石膏的汞含量基本相似。

    Process for producing highly reactive lime in a furnace
    18.
    发明授权
    Process for producing highly reactive lime in a furnace 失效
    在炉中生产高活性石灰的方法

    公开(公告)号：US6146607A

    公开(公告)日：2000-11-14

    申请号：US899576

    申请日：1997-07-24

    申请人： Lloyd L. Lavely, Jr.

    发明人： Lloyd L. Lavely, Jr.

    IPC分类号： B01D53/50 ,  C01B13/14 ,  C01B13/18 ,  C01F11/02 ,  C01F11/04 ,  C01F11/06 ,  C04B2/02 ,  C04B2/12

    CPC分类号： C04B2/08 ,  C01F11/06 ,  C04B11/005 ,  C04B2/04 ,  B01D2251/404 ,  B01D2257/302 ,  C04B2290/20

    摘要： A limestone furnace calcination process involves injecting finely divided limestone particles into a zone in a furnace at which the temperature of the flue gas stream, as it passes through the zone, is above the minimum calcination temperature and below the minimum effective quicklime utilization/sulfation temperature. In conventional furnaces, the minimum calcination temperature, or the calcium carbonate decomposition temperature, ranges from about 1,365 to 1,430.degree. F. The minimum effective quicklime utilization/sulfation temperature refers to the temperature below which the rate of quicklime sulfation of the lime produced by calcination of the limestone is sufficiently slow to result in negligible calcium sulfate formation on the resultant lime, and in conventional furnace applications ranges from 1,600 to 1,800.degree. F. The zone is preferably sized such that limestone particles injected therein will remain at a temperature above the minimum calcination temperature, as the particles are carried downstream, for a period sufficient for substantially complete calcination of the limestone particles to lime while minimizing reactions between the resultant lime particles and sulfur dioxide to form calcium sulfate while the particles are in the furnace and to minimize sintering of the lime and complex calcium compound formation. The resultant lime particles may then be utilized in conventional downstream flue gas desulfurization processes including wet and semi-dry processes.

    摘要翻译： 石灰石炉煅烧过程包括将细碎的石灰石颗粒注入炉中的区域，在该区域中，烟道气流通过该区域的温度高于最低煅烧温度并低于最低有效生石灰利用/硫酸化温度 。 在常规炉中，最低煅烧温度或碳酸钙分解温度范围为约1,365至1,430°F。最低有效生石灰利用/硫酸化温度是指通过煅烧产生的石灰生石灰硫酸化速率的温度 的石灰石足够慢，导致在所得石灰上形成可忽略的硫酸钙，并且在常规炉应用范围为1600至1800°F。该区优选地尺寸使得其中注入的石灰石颗粒将保持在高于最小值 煅烧温度，随着颗粒在下游运载一段足以使石灰石颗粒完全煅烧成石灰的时间，同时最小化所得的石灰颗粒和二氧化硫之间的反应形成硫酸钙，同时颗粒在炉中并使烧结最小化 的石灰和复合钙 ium化合物形成。 所得到的石灰颗粒然后可用于常规的下游烟道气脱硫方法，包括湿法和半干法。