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    Method of removing NOx by adsorption, NOx adsorbent and apparatus for purifying NOx-containing gas
    4.
    发明授权
    Method of removing NOx by adsorption, NOx adsorbent and apparatus for purifying NOx-containing gas 失效
    通过吸附除NOx的方法，NOx吸附剂和用于净化含NO x的气体的装置

    公开(公告)号：US5158582A

    公开(公告)日：1992-10-27

    申请号：US689089

    申请日：1991-04-22

    申请人： Shigenori Onitsuka ,  Masayoshi Ichiki ,  Takanobu Watanabe

    发明人： Shigenori Onitsuka ,  Masayoshi Ichiki ,  Takanobu Watanabe

    IPC分类号： B01D53/06 ,  B01D53/86 ,  B01D53/94 ,  F24F3/14

    CPC分类号： B01D53/9481 ,  B01D53/02 ,  B01D53/06 ,  B01D53/8628 ,  F24F3/1423 ,  B01D2253/108 ,  B01D2253/112 ,  B01D2253/25 ,  B01D2253/304 ,  B01D2257/404 ,  B01D2259/40083 ,  B01D2259/4009 ,  F24F2203/1036 ,  F24F2203/106 ,  F24F2203/1072 ,  F24F2203/1084 ,  F24F2203/1092

    摘要： The invention provides a method of removing NOx by adsorption wherein a gas containing NOx at a low concentration is brought into contact with an adsorbent comprising a copper salt supported on zeolite serving as a carrier, whereby the NOx is adsorbed and removed efficiently. The adsorbent for use in this method comprises at least one copper salt supported on natural or synthetic zeolite, the copper salt being selected from the group consisting of copper chloride, double salt of copper chloride and ammine complex salt of copper chloride. The apparatus of the invention for purifying an NOx-containing gas comprises an adsorptive dehumidifier for dehumidifying the gas with a dehumidifying agent and regenerating the agent with a purified gas, and an adsorptive denitration unit for denitrating the dehumidified gas. The denitration unit has an adsorbent regenerating zone provided with a channel for recycling an NH.sub.3 -containing regenerating gas and with a channel for withdrawing a portion of the regenerating gas from the recycling channel, passing the withdrawn gas through a denitration reactor and then releasing the denitrated gas into the atmosphere.

    摘要翻译： 本发明提供一种通过吸附除去NOx的方法，其中含有低浓度的NOx的气体与负载在作为载体的沸石上的铜盐的吸附剂接触，由此有效地吸附和除去NOx。 用于该方法的吸附剂包括至少一种负载在天然或合成沸石上的铜盐，所述铜盐选自氯化铜，氯化铜的双重盐和氯化铜的氨络合物盐。 用于净化含NO x气体的本发明的装置包括用除湿剂对气体进行除湿并用净化气体再生的吸附式除湿机和用于使除湿气体脱盐的吸附式脱硝装置。 脱硝装置具有吸附剂再生区，该再生区设置有用于再循环含NH 3的再生气体的通道，以及用于从再循环通道排出一部分再生气体的通道，使排出的气体通过脱硝反应器，然后将脱硝反应器 气体进入大气。

    Dry processes for treating combustion exhaust gas
    6.
    发明授权
    Dry processes for treating combustion exhaust gas 失效
    用于处理燃烧排放气体的干燥方法

    公开(公告)号：US5171552A

    公开(公告)日：1992-12-15

    申请号：US552382

    申请日：1990-07-13

    申请人： Yoshimasa Miura ,  Etsuo Ogino ,  Michio Ito ,  Toshio Hama ,  Shigenori Onitsuka ,  Michio Ishida ,  Teruyuki Doi ,  Teruhiko Kawanabe

    发明人： Yoshimasa Miura ,  Etsuo Ogino ,  Michio Ito ,  Toshio Hama ,  Shigenori Onitsuka ,  Michio Ishida ,  Teruyuki Doi ,  Teruhiko Kawanabe

    IPC分类号： B01D53/50

    CPC分类号： B01D53/508 ,  F23J2215/10 ,  F23J2215/20

    摘要： The invention provides a furnace desulfurization process which includes supplying a desulfurizing agent into a furnace or flue to cause the agent to absorb SO.sub.2 from the exhaust gas, the desulfurizing agent being a salt obtained by at least partly neutralizing a Ca desulfurizing agent with an acid; a furnace desulfurization process which includes supplying a Ca desulfurizing agent into a furnace or flue to effect a first-stage desulfurization reaction, collecting ash containing a waste of the agent having an unreacted substance enclosed therein from the exhaust gas, adding an acid to the collected ash to at least partly neutralize the unreacted portion of the agent, and recycling the ash containing the resulting salt into the furnace or flue to effect a second-stage desulfurization reaction; a dry simultaneous desulfurization-denitration process which includes supplying a Ca desulfurizing agent into a furnace or flue to effect a desulfurization reaction, collecting ash containing a waste of the agent having an unreacted substance enclosed therein from the exhaust gas, adding a denitrating reducing agent to the collected ash, and recycling the ash containing the waste desulfurizing agent and the reducing agent into the furnace or flue to effect desulfurization and denitration reactions; and a dry simultaneous desulfurization-denitration process which includes supplying a Ca desulfurizing agent into a furnace or flue to effect a desulfurization reaction, collecting ash containing a waste of the agent having an unreacted substance enclosed therein from the exhaust gas, adding an acid to the collected ash to at least partly neutralize the unreacted substance, adding a denitrating reducing agent to the ash containing the resulting salt, and recycling the ash containing the salt and the reducing agent into the furnace or flue to effect desulfurization and denitration reactions.

    摘要翻译： 本发明提供了一种炉式脱硫方法，其包括将脱硫剂供应到炉或烟道中，使得试剂从废气中吸收SO 2，该脱硫剂是通过用酸至少部分中和Ca脱硫剂得到的盐; 包括将Ca脱硫剂供应到炉或烟道中进行第一阶段脱硫反应的炉式脱硫方法，从废气中收集含有其中包含未反应物质的废物的灰分，向收集的烟道中加入酸 灰至少部分中和试剂的未反应部分，并将含有所得盐的灰分再循环到炉或烟道中以进行第二阶段脱硫反应; 一种干式同时脱硫脱硝方法，其包括将Ca脱硫剂供应到炉或烟道中进行脱硫反应，从废气中收集含有其中包含未反应物质的废物的灰分，将脱硝还原剂加入到 收集的灰分，并将含有废脱硫剂和还原剂的灰分回收到炉或烟道中以进行脱硫和脱硝反应; 以及干法同时脱硫脱硝工艺，其包括将Ca脱硫剂供应到炉或烟道中进行脱硫反应，从废气中收集含有其中包含未反应物质的废物的灰分，向所述废气中加入酸 收集的灰分至少部分中和未反应物质，向含有所得盐的灰分中加入脱硝还原剂，并将含有盐和还原剂的灰分再循环到炉或烟道中以进行脱硫和脱硝反应。