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    Denitrification method
    1.
    发明授权
    Denitrification method 有权
    脱氮方法

    公开(公告)号：US07393512B2

    公开(公告)日：2008-07-01

    申请号：US10510490

    申请日：2003-03-21

    申请人： Meinhard Schwefer ,  Michael Groves

    发明人： Meinhard Schwefer ,  Michael Groves

    IPC分类号： B01D53/56

    CPC分类号： B01D53/8625 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/208 ,  B01D2255/20738 ,  B01D2255/50 ,  B01D2257/402 ,  B01D2257/404 ,  Y02C20/10

    摘要： A process for reducing the content of NOx and N2O in gases, in particular in process gases and offgases, which comprises the measures: a) addition of at least one nitrogen-containing reducing agent to the NOx- and N2O-containing gas in at least the amount required for complete reduction of the NOx; b) addition of a hydrocarbon, of carbon monoxide, of hydrogen, or of a mixture of one or more of these gases to the NOx- and N2O-containing gas for the reduction of the N2O; and c) introduction of the gas mixture into at least one reaction zone at temperatures of up to 450° C., which contains one or more iron-laden zeolites. The process can be used, in particular, in nitric acid production, for offgases from power stations or for gas turbines.

    摘要翻译： 一种降低气体，特别是工艺气体和废气中的NO x和N 2 O的含量的方法，其包括以下措施：a）添加至少一种 含氮还原剂至少达到完全还原NO x所需的量的含NO x和N 2 O的含有气体 >; b）将一种一氧化碳的氢气或这些气体中的一种或多种的混合物的碳氢化合物加入到含N 2 O 2的N 2 O 3和N 2 O 气体用于还原N 2 O; 和c）在至多450℃的温度下，将气体混合物引入到至少一个反应区，其含有一个或多个含铁沸石。 该方法特别可用于硝酸生产，用于发电站或燃气轮机的废气。

    Denitrification method
    2.
    发明申请
    Denitrification method 有权
    脱氮方法

    公开(公告)号：US20050244320A1

    公开(公告)日：2005-11-03

    申请号：US10510490

    申请日：2003-03-21

    申请人： Meinhard Schwefer ,  Michael Groves

    发明人： Meinhard Schwefer ,  Michael Groves

    IPC分类号： B01D53/94 ,  B01D53/86 ,  B01J29/76 ,  B01D53/56

    CPC分类号： B01D53/8625 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/208 ,  B01D2255/20738 ,  B01D2255/50 ,  B01D2257/402 ,  B01D2257/404 ,  Y02C20/10

    摘要： A process for reducing the content of NOx and N2O in gases, in particular in process gases and offgases, which comprises the measures: a) addition of at least one nitrogen-containing reducing agent to the NOx- and N2O-containing gas in at least the amount required for complete reduction of the NOx, b) addition of a hydrocarbon, of carbon monoxide, of hydrogen or of a mixture of one or more of these gases to the NOx- and N2O-containing gas for the reduction of the N2O and c) introduction of the gas mixture into at least one reaction zone at temperatures of up to 450° C. which contains one or more iron-laden zeolites, is described. The process can be used, in particular, in nitric acid production, for offgases from power stations or for gas turbines.

    摘要翻译： 一种降低气体，特别是工艺气体和废气中的NO x和N 2 O的含量的方法，其包括以下措施：a）添加至少一种 含氮还原剂至少达到完全还原NO x所需的量的含NO x和N 2 O的含有气体 ，b）将一种一氧化碳的氢气或这些气体中的一种或多种的混合物加入到NO 2 - 和N 2 O- 以及c）将气体混合物引入到至多一个反应区域中，所述反应区域在高达450℃的温度下，其含有一种或多种含铁载体的沸石， 被描述。 该方法特别可用于硝酸生产，用于发电站或燃气轮机的废气。

    DEVICE AND METHOD FOR CATALYTIC GAS PHASE REACTION AND THE USE THEREOF
    5.
    发明申请
    DEVICE AND METHOD FOR CATALYTIC GAS PHASE REACTION AND THE USE THEREOF 有权
    用于催化气相反应的装置和方法及其用途

    公开(公告)号：US20100166631A1

    公开(公告)日：2010-07-01

    申请号：US12451874

    申请日：2008-05-28

    申请人： Meinhard Schwefer ,  Michael Groves ,  Jürgen Fuchs ,  Rainer Maurer ,  Rolf Siefert ,  Bernhard Hündgen

    发明人： Meinhard Schwefer ,  Michael Groves ,  Jürgen Fuchs ,  Rainer Maurer ,  Rolf Siefert ,  Bernhard Hündgen

    IPC分类号： B01D53/58 ,  B01J15/00

    CPC分类号： B01J8/008 ,  B01J8/02 ,  B01J8/025 ,  B01J8/0278 ,  B01J8/0285 ,  B01J15/005 ,  B01J19/002 ,  B01J2208/00176 ,  B01J2208/00203 ,  B01J2208/00212 ,  B01J2208/00495 ,  B01J2208/0053 ,  B01J2208/00716 ,  B01J2219/00006 ,  B01J2219/00263 ,  B01J2219/025 ,  C01B21/265 ,  C01B21/28

    摘要： Improved reactors for catalytic, exothermic gas-phase reactions, which comprise, viewed in the flow direction of a feed gas, an inlet zone (1), a reaction zone (2) containing at least one catalyst (4) an outlet zone (3) for the product gas, are described. The reactors are provided in the region of the inlet zone (1) or in the region of the inlet zone (1) and the reaction zone (2) with means, for example an insulating liner (6) and/or apparatuses for the transport of cooling media, which reduce heat transport from the reaction zone (2) into the inlet zone (1) and thus reduce the risk of preignition of the feed gas mixture used or occurrence of undesirable secondary reactions in the inlet zone (1) and/or the interior walls of the reactor in the region of the inlet zone (1) or in the region of the inlet zone (1) and the reaction zone (2) consist of inert material.The reactors can be used, in particular, for the oxidation of ammonia, for example in nitric acid plants in which transition metal catalysts configured as honeycombs and having smaller cross sections than the platinum gauzes customarily used are preferably used.

    摘要翻译： 改进的用于催化，放热气相反应的反应器，其包括在进料气体的流动方向上观察入口区域（1），含有至少一种催化剂的反应区域（2），出口区域（3） ）用于产品气体。 反应器在入口区域（1）的区域中或在入口区域（1）和反应区域（2）的区域中设置有例如绝缘衬垫（6）和/或用于运输的装置 的冷却介质，其减少从反应区域（2）进入入口区域（1）的热传递，并且因此降低了所使用的进料气体混合物的预先燃烧或在入口区域（1）中产生不期望的次级反应的风险和/ 或在入口区域（1）的区域中或在入口区域（1）和反应区域（2）的区域内的反应器的内壁由惰性材料构成。 反应器特别可用于氨的氧化，例如在硝酸设备中，其中优选使用配置为蜂窝状的过渡金属催化剂并且具有比通常使用的铂网布更小的横截面。

    Method and device for reducing the nox and n2o of gases
    6.
    发明申请
    Method and device for reducing the nox and n2o of gases 有权
    用于减少气体的nox和n2o的方法和装置

    公开(公告)号：US20060051277A1

    公开(公告)日：2006-03-09

    申请号：US10516918

    申请日：2003-06-10

    申请人： Meinhard Schwefer ,  Michael Groves ,  Rolf Siefert ,  Rainer Maurer

    发明人： Meinhard Schwefer ,  Michael Groves ,  Rolf Siefert ,  Rainer Maurer

    IPC分类号： B01D53/56

    CPC分类号： B01J29/7007 ,  B01D53/8628 ,  B01D2255/20738 ,  B01D2255/50 ,  B01D2257/402 ,  B01D2257/404 ,  B01J8/008 ,  B01J8/0411 ,  B01J8/0415 ,  B01J8/0453 ,  B01J29/08 ,  B01J29/14 ,  B01J29/18 ,  B01J29/24 ,  B01J29/46 ,  B01J29/65 ,  B01J29/68 ,  B01J29/7615 ,  B01J2208/00539 ,  B01J2208/00849 ,  B01J2208/025 ,  Y02C20/10

    摘要： The method comprises the following steps: conduction of the gas containing N2O and NOx over a series of two catalyst beds consisting of one or more zeolites° charged with iron: addition of a reduction agent for NOx between the catalyst beds; setting of a temperature of less than 500° C. in the first and second catalyst bed; setting of a gas pressure of at least 2 bar in the two catalyst beds; and the selection of a space velocity in the first and second catalyst bed that achieves a degradation of the N2O content of the gas in the first catalyst bed by a maximum of up to 90%, in relation to the N2O content at the entrance to the catalyst bed and an additional degradation of the N2O content of the gas in the second catalyst bed by at least 30% in relation to the N2O content at the entrance to the second catalyst bed. The first reaction zone is used to degrade the N2O and the second reaction zone reduces the NOx and breaks down at least part of the remaining N2O. The inventive device comprises at least one radially traversed catalyst bed.

    摘要翻译： 该方法包括以下步骤：在由一种或多种带铁的沸石组成的一系列两个催化剂床上传导含有N 2 O和NO x的气体： 在催化剂床之间加入NO x还原剂; 在第一和第二催化剂床中设定小于500℃的温度; 在两个催化剂床中设定至少2巴的气体压力; 以及第一和第二催化剂床中的空速的选择，其使第一催化剂床中的气体的N 2 O 2含量降低最多达90％，相对于 在催化剂床入口处的N 2 O 2含量和第二催化剂床中气体的N 2 O 2含量的另外降解至少30％ 相对于第二催化剂床入口处的N 2 O O含量。 第一反应区用于降解N 2 O 2，并且第二反应区减少NO x X并破坏剩余的N 2 O 2的至少一部分， / SUB> O。 本发明的装置包括至少一个径向穿过的催化剂床。

    Method For Reducing the Nitrogen Oxide Concentration in Gases
    10.
    发明申请
    Method For Reducing the Nitrogen Oxide Concentration in Gases 有权
    降低气体中氮氧化物浓度的方法

    公开(公告)号：US20080241034A1

    公开(公告)日：2008-10-02

    申请号：US11913450

    申请日：2006-04-27

    申请人： Meinhard Schwefer ,  Rolf Siefert ,  Michael Groves

    发明人： Meinhard Schwefer ,  Rolf Siefert ,  Michael Groves

    IPC分类号： B01D53/56

    CPC分类号： B01D53/8628 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/2062 ,  B01D2251/208 ,  B01D2255/20738 ,  B01D2255/50 ,  B01D2257/402 ,  B01D2257/404 ,  Y02C20/10

    摘要： The method comprises passing an N2O- and NOx-containing gas over a sequence of two catalyst beds, adding reducing agents for NOx and for N2O between the catalyst beds in such an amount that not only NOx but also a predetermined proportion of N2O is reduced. The reaction conditions are set so that the N2O content of the gas is reduced by not more than 95%, based on the N2O content at the entrance of the first catalyst bed, by decomposition to nitrogen and oxygen in the first catalyst bed and that not only chemical reduction of NOx but also chemical reduction of N2O occurs in the second catalyst bed so that the N2O content of the gas is reduced by at least 50%, based on the N2O content at the entrance of the second catalyst bed.

    摘要翻译： 该方法包括在两个催化剂床的序列上通过含N 2 O和NO x-x N的气体，向其中加入还原剂， 并且催化剂床之间的N 2 O 2的量不仅仅是NO 2 x N 2，而且N 2 O 2的预定比例减少 。 设定反应条件使得气体的N 2 O 2 O含量基于在入口处的N 2 O 2含量降低不超过95％ 第一催化剂床，通过在第一催化剂床中分解成氮气和氧气，并且不仅在第二催化剂床中发生NO 2 X的化学还原，而且还发生N 2 O 2的化学还原 催化剂床，使得气体的N 2 O 2 O含量基于第二催化剂床入口处的N 2 O 2含量降低至少50％。