Method and apparatus for utilization of partially gasified coal for mercury removal
    2.
    发明授权
    Method and apparatus for utilization of partially gasified coal for mercury removal 有权
    用于部分气化煤用于除汞的方法和装置

    公开(公告)号:US07249564B2

    公开(公告)日:2007-07-31

    申请号:US10866239

    申请日:2004-06-14

    IPC分类号: F23J15/00

    摘要: A method for capturing mercury in a flue gas formed by solid fuel combustion including: combusting coal, wherein mercury released during combustion is entrained in flue gas generated by the combustion; generating a thermally activated carbon-containing sorbent by partially gasifying a solid fuel in a gasifier local to the combustion of solid fuel; injecting the gasified gas products into the combustion of coal; injecting the thermally activated sorbent in the flue gas, and collecting the injected sorbent in a waste treatment system.

    摘要翻译: 一种用于捕获由固体燃料燃烧形成的烟道气中的汞的方法,包括:燃烧煤,其中在燃烧期间释放的汞被夹带在由燃烧产生的烟道气中; 通过在固体燃料的燃烧局部气化器中部分气化固体燃料来产生热活性含碳吸附剂; 将气化产物注入煤的燃烧中; 将热活化的吸附剂注入烟道气中,并将注入的吸附剂收集在废物处理系统中。

    Methods for removing air pollutants from combustion flue gas
    4.
    发明授权
    Methods for removing air pollutants from combustion flue gas 失效
    从燃烧烟气中去除大气污染物的方法

    公开(公告)号:US5670122A

    公开(公告)日:1997-09-23

    申请号:US652104

    申请日:1996-05-23

    摘要: A method is provided for preventing the release of air pollutants with combustion flue gases emitted to the atmosphere by the removal of one or more of nitric oxide, sulfur trioxide, light hydrocarbons, carbon monoxide, and trace amounts of mercury from combustion flue gas streams. The method converts nitric oxide to nitrogen dioxide, sulfur trioxide to sulfur dioxide, removes light hydrocarbons in the form of carbon dioxide, reduces the concentration of carbon monoxide, and removes mercury vapor in the form of mercury oxide, by the addition of hydrogen peroxide or a mixture of hydrogen peroxide and methanol to a combustion flue gas at a temperature in the range from about 650 K (377.degree. C.) to 1100 K (827.degree. C.).

    摘要翻译: 提供一种方法,用于通过从燃烧烟道气流中去除一氧化氮,三氧化硫,轻质烃,一氧化碳和痕量汞中的一种或多种,​​来防止排放到大气中的燃烧烟道气释放空气污染物。 该方法将一氧化氮转化为二氧化氮,将三氧化硫转化为二氧化硫,去除二氧化碳形式的轻烃,减少一氧化碳的浓度,并通过加入过氧化氢或除去氧化汞,除去氧化汞形式的汞蒸气 过氧化氢和甲醇的混合物在约650K(377℃)至1100K(827℃)的温度范围内的燃烧烟道气。

    Methods for enlarging the useful temperature window for NO.sub.x
reduction in combustion systems
    5.
    发明授权
    Methods for enlarging the useful temperature window for NO.sub.x reduction in combustion systems 失效
    扩大燃烧系统NOx还原有用温度窗的方法

    公开(公告)号:US5116584A

    公开(公告)日:1992-05-26

    申请号:US681697

    申请日:1991-04-05

    IPC分类号: B01D53/56

    CPC分类号: B01D53/56

    摘要: Methods for reducing NO.sub.x emissions from stationary combustion systems having variable flue gas temperatures are disclosed. Use of an annonium salt of an organic acid enlarges the temperature window for effective selective noncatalytic NO.sub.x reduction thereby accounting for variable flue gas temperatures. Currently preferred ammonium salts of organic acids include ammonium formate, ammonium acetate, and ammonium oxalate. Mixtures of urea and either an ammonium salt of an organic acid or a metallic salt of an organic acid provide an even greater temperature window for NO.sub.x reduction. Currently preferred metallic salts of organic acids include Ca(COOH).sub.2, Ca(CH.sub.3 COO).sub.2, Ca(C.sub.2 H.sub.5 COO).sub.2, Mg(COOH).sub.2, Mg(CH.sub.3 COO).sub.2, and Mg(C.sub.2 H.sub.5 COO).sub.2.

    摘要翻译: 公开了用于减少具有可变烟道气温度的固定燃烧系统的NOx排放的方法。 使用有机酸的onium盐可以扩大用于有效选择性非催化NOx还原的温度窗口,从而考虑可变的烟气温度。 目前优选的有机酸铵盐包括甲酸铵,乙酸铵和草酸铵。 脲和有机酸的铵盐或有机酸的金属盐的混合物为NOx还原提供了更大的温度窗口。 目前优选的有机酸金属盐包括Ca(COOH)2,Ca(CH 3 COO)2,Ca(C 2 H 5 COO)2,Mg(COOH)2,Mg(CH 3 COO)2和Mg(C 2 H 5 COO)2)。