Combined catalytic/non-catalytic process for nitrogen oxides reduction
    1.
    发明授权
    Combined catalytic/non-catalytic process for nitrogen oxides reduction 失效
    用于氮氧化物还原的联合催化/非催化方法

    公开(公告)号:US4978514A

    公开(公告)日:1990-12-18

    申请号:US408122

    申请日:1989-09-12

    CPC分类号: B01D53/56 B01D53/8625

    摘要: A process for reducing nitrogen oxides in a combustion effluent is presented. The process involves introducing a nitrogenous treatment agent into the effluent under conditions effective to create a treated effluent having reduced nitrogen oxides concentration such that ammonia is present in the treated effluent; and then contacting the treated effluent under conditions effective to reduce the nitrogen oxides in the effluent with a nitrogen oxides reducing catalyst.

    摘要翻译: 提出了一种用于还原燃烧流出物中的氮氧化物的方法。 该方法包括在有效地产生具有降低的氮氧化物浓度的经处理的流出物的条件下将氮处理剂引入流出物中,使得氨在经处理的流出物中存在; 然后在有效降低流出物中的氮氧化物的条件下与氮氧化物还原催化剂接触处理的流出物。

    Catalytic/non-catalytic combination process for nitrogen oxides reduction
    2.
    发明授权
    Catalytic/non-catalytic combination process for nitrogen oxides reduction 失效
    用于氮氧化物还原的催化/非催化组合方法

    公开(公告)号:US5139754A

    公开(公告)日:1992-08-18

    申请号:US626439

    申请日:1990-12-12

    IPC分类号: B01D53/56 B01D53/86

    CPC分类号: B01D53/8625 B01D53/56

    摘要: A process for reducing nitrogen oxides in a combusiton effluent is presented. The process involves introducing a nitrogenous treatment agent into the effluent under conditions effective to create a treated effluent having reduced nitrogen oxides concentration such that ammonia is present in the treated effluent; and then contacting the treated effluent under conditions effective to reduce the nitrogen oxides in the effluent with a nitrogen oxides reducing catalyst.

    摘要翻译: 提出了一种还原氮气氧化物的方法。 该方法包括在有效地产生具有降低的氮氧化物浓度的经处理的流出物的条件下将氮处理剂引入流出物中,使得氨在经处理的流出物中存在; 然后在有效降低流出物中的氮氧化物的条件下与氮氧化物还原催化剂接触处理的流出物。

    Process and apparatus for the thermal decomposition of nitrous oxide
    3.
    发明授权
    Process and apparatus for the thermal decomposition of nitrous oxide 失效
    一氧化二氮热分解的方法和装置

    公开(公告)号:US5048432A

    公开(公告)日:1991-09-17

    申请号:US634402

    申请日:1990-12-27

    IPC分类号: F23C10/10 F23J15/08

    摘要: A process and apparatus is presented for the reduction of nitrous oxide in the effluent from the combustion of a carbonaceous fuel. The process comprises raising the temperature of the effluent to a temperature of at least about 1700.degree. F. The apparatus utilized is a heating means which is disposed in a boiler at a location where the effluent is at a temperature of less than about 1700.degree. F.

    摘要翻译: 提出了一种用于减少来自碳质燃料燃烧的流出物中的一氧化二氮的方法和装置。 该方法包括将流出物的温度升高至至少约1700°F。所使用的装置是一种加热装置,该装置在流出物的温度低于约1700°F的位置设置在锅炉中 。

    Highly efficient hybrid process for nitrogen oxides reduction
    4.
    发明授权
    Highly efficient hybrid process for nitrogen oxides reduction 失效
    氮氧化物还原的高效混合工艺

    公开(公告)号:US5286467A

    公开(公告)日:1994-02-15

    申请号:US907222

    申请日:1992-07-01

    CPC分类号: B01D53/8625 B01D53/56

    摘要: A process for reducing nitrogen oxides in a combustion effluent is presented. The process involves introducing a nitrogenous treatment agent other than ammonia into the effluent to create a treated effluent having reduced nitrogen oxides concentration such that ammonia is present in the treated effluent; introducing a source of ammonia into the effluent; and contacting the treated effluent with a nitrogen oxides reducing catalyst.

    摘要翻译: 提出了一种用于还原燃烧流出物中的氮氧化物的方法。 该方法包括将不同于氨的含氮处理剂引入流出物中以产生具有降低的氮氧化物浓度的经处理的流出物,使得经处理的流出物中存在氨; 在流出物中引入氨源; 并将经处理的流出物与氮氧化物还原催化剂接触。

    Process for nitrogen oxides reduction to lowest achievable level
    5.
    发明授权
    Process for nitrogen oxides reduction to lowest achievable level 失效
    将氮氧化物还原成最低可达水平的方法

    公开(公告)号:US5229090A

    公开(公告)日:1993-07-20

    申请号:US725183

    申请日:1991-07-03

    IPC分类号: B01D53/56

    CPC分类号: B01D53/56

    摘要: A system for the reduction of nitrogen oxides in the effluent from the combustion of a carbonaceous fuel is presented. This system utilizes means for determining the lowest achievable nitrogen oxides concentration with respect to a treatment agent to be introduced into the effluent; means for determining whether the baseline nitrogen oxides concentration at the point of introduction is above the lowest achievable nitrogen oxides concentration; and means for introducing the treatment agent into the effluent under conditions effective to reduce the effluent nitrogen oxides concentration.

    摘要翻译: 提出了一种用于还原来自碳质燃料燃烧的流出物中的氮氧化物的系统。 该系统利用相对于待引入流出物的处理剂确定最低可实现的氮氧化物浓度的手段; 用于确定引入点的基准氮氧化物浓度是否高于最低可实现的氮氧化物浓度的手段; 以及用于在有效降低流出物氮氧化物浓度的条件下将处理剂引入流出物的装置。

    Process for reducing nitrogen oxides without generating nitrous oxide
    6.
    发明授权
    Process for reducing nitrogen oxides without generating nitrous oxide 失效
    减少氮氧化物而不产生一氧化二氮的方法

    公开(公告)号:US4997631A

    公开(公告)日:1991-03-05

    申请号:US489919

    申请日:1990-03-07

    IPC分类号: B01D53/56

    CPC分类号: B01D53/56 Y02C20/10

    摘要: A process is presented for the reduction of nitrogen oxides in the effluent from the combustion of a carbonaceous fuel while reducing the generation of nitrous oxide. The process comprises introducing a treatment agent comprising ammonium carbamate into the effluent in an amount effective to substantially avoid the presence of nitrous oxide.

    摘要翻译: 提出了一种减少来自碳质燃料燃烧的流出物中的氮氧化物同时减少一氧化二氮的产生的方法。 该方法包括将含有氨基甲酸铵的处理剂以有效基本避免一氧化二氮存在的量引入流出物中。