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    NOx-trap
    4.
    发明授权
    NOx-trap 有权
    NOx捕集

    公开(公告)号：US07287370B2

    公开(公告)日：2007-10-30

    申请号：US10380597

    申请日：2001-09-17

    Applicant: Raj Rao Rajaram ,  Stephen Poulston

    Inventor： Raj Rao Rajaram ,  Stephen Poulston

    IPC: B01J23/02 ,  B01J23/04 ,  B01J23/10 ,  B01J23/26 ,  B01J23/34 ,  B01J23/42 ,  C01B21/20 ,  C01B21/36 ,  F01N3/10

    CPC classification number: B01D53/9481 ,  B01J23/58 ,  B01J23/6562 ,  B01J35/0006 ,  B01J37/0244 ,  Y10T428/31678

    Abstract: A NOx-trap composition comprises: (a) at least one first NOx storage component comprising at least one alkali metal supported on at least one first support material; and (b) a platinum oxidation catalyst and at least one second NOx storage component not being an alkali metal supported on at least one second support material, whereby the platinum oxidation catalyst and the at least one alkali metal are physically segregated thereby susbtantially maintaining the hydrocarbon conversion activity of the platinum oxidation catalyst.

    Abstract translation: 一种NOx捕集组合物包括：（a）至少一种第一NOx存储组分，其包含至少一种碱金属，其至少一个第一载体材料被支撑; 和（b）铂氧化催化剂和至少一种第二NO x存储组分，其不是担载在至少一种第二载体材料上的碱金属，由此所述铂氧化催化剂和所述至少一种碱金属物理分离，从而暂时保持所述烃 铂氧化催化剂的转化活性。

    Method and a device for optimizing purification of diesel exhaust gases
    7.
    发明授权
    Method and a device for optimizing purification of diesel exhaust gases 失效
    用于优化柴油机废气净化的方法和装置

    公开(公告)号：US4400352A

    公开(公告)日：1983-08-23

    申请号：US269006

    申请日：1981-05-27

    Applicant: Ove A. Rehnberg ,  Anders J. Sundgren

    Inventor： Ove A. Rehnberg ,  Anders J. Sundgren

    IPC: B01D53/94 ,  F01N3/20 ,  F02B3/06 ,  C01B21/36

    CPC classification number: F01N3/2046 ,  B01D53/944 ,  F01N2260/02 ,  F01N2260/024 ,  F02B3/06 ,  Y02T10/26

    Abstract: This invention relates to a method and a device for optimizing purification of diesel exhaust gases, the purification being carried out by using a catalyst.It is the object of the present invention to avoid the development of NO.sub.2 in the catalyst at the same time as the contents of carbon monoxide (CO) and hydrocarbons are maintained at a low level.This object is accomplished by adjusting the temperature of the exhaust gases when they pass the catalyst. The adjustment is carried out by finely divided injection of some cooling medium into the exhaust gases.

    Abstract translation: PCT No.PCT / SE80 / 00232 Sec。 371日期：1981年5月27日 102（e）日期1981年5月27日PCT提交1980年10月1日PCT公布。 出版物WO81 / 00880 日本1981年4月2日。本发明涉及一种用于优化柴油机废气净化的方法和装置，该纯化是通过使用催化剂进行的。 本发明的目的是在一氧化碳（CO）和碳氢化合物的含量保持在低水平的同时避免催化剂中NO 2的发生。 该目的通过调节废气通过催化剂时的温度来实现。 通过将一些冷却介质细分注入排气来进行调节。

    Method of preventing escape of nitrogen oxides from an aqueous nitrate solution
    8.
    发明授权
    Method of preventing escape of nitrogen oxides from an aqueous nitrate solution 失效
    防止氮氧化物从硝酸水溶液中逸出的方法

    公开(公告)号：US4138470A

    公开(公告)日：1979-02-06

    申请号：US826639

    申请日：1977-08-22

    Applicant: Donald W. Bolme

    Inventor： Donald W. Bolme

    IPC: B01D53/56 ,  C01B21/36 ,  C01B21/38 ,  C01B21/40

    CPC classification number: B01D53/56 ,  C01B21/36

    Abstract: Nitric oxide may be removed from gases which it is admixed by contacting the gases with aqueous solutions containing nitrate ions in sufficient concentration to oxidize the nitric oxide to nitrous acid and to retain it in the solution under stable conditions. Other oxides of nitrogen can also be absorbed producing nitrous acid which is retained in the aqueous solution in a similar manner. Thereafter, the scrubbing solution is regenerated under controlled conditions, producing a gas stream which contains the recovered nitrogen oxides in relatively high concentration and a scrubbing solution which can be recycled. The recovered nitrogen oxides may be used in the manufacture of nitric acid or other compounds or decomposed into harmless gases.

    Abstract translation: 通过使气体与含有足够浓度的硝酸根离子的水溶液接触，将一氧化氮从气体中除去，从而将一氧化氮氧化成亚硝酸并将其保持在稳定条件下的溶液中。 还可以吸收其它的氮氧化物，以类似的方式产生保留在水溶液中的亚硝酸。 此后，洗涤溶液在受控条件下再生，产生含有较高浓度的回收的氮氧化物的气流和可回收的洗涤溶液。 回收的氮氧化物可用于制造硝酸或其他化合物或分解成无害气体。

    Removal of nitrogen oxides from industrial gases by use of oxidizing solutions in which nitrates are the oxidants
    9.
    发明授权
    Removal of nitrogen oxides from industrial gases by use of oxidizing solutions in which nitrates are the oxidants 失效
    通过使用其中硝酸盐是氧化剂的氧化溶液从工业气体中除去氮氧化物

    公开(公告)号：US4118460A

    公开(公告)日：1978-10-03

    申请号：US826638

    申请日：1977-08-22

    Applicant: Donald W. Bolme

    Inventor： Donald W. Bolme

    IPC: B01D53/56 ,  C01B21/36 ,  B01D53/34

    CPC classification number: B01D53/56 ,  C01B21/36

    Abstract: Nitric oxide may be removed from gases with which it is admixed by contacting the gases with aqueous solutions containing nitrate ions in sufficient concentration to oxidize the nitric oxide to nitrous acid and to retain it in the solution under stable conditions. Other oxides of nitrogen can also be absorbed producing nitrous acid which is retained in the aqueous solution in a similar manner. Thereafter, the scrubbing solution is regenerated under controlled conditions, producing a gas stream which contains the recovered nitrogen oxides in relatively high concentration and a scrubbing solution which can be recycled. The recovered nitrogen oxides may be used in the manufacture of nitric acid or other compounds or decomposed into harmless gases.

    Abstract translation: 通过使气体与含有足够浓度的硝酸根离子的水溶液接触，将氧化物氧化成亚硝酸并在稳定的条件下将其保留在溶液中，从而将其与其混合的气体中除去。 还可以吸收其它的氮氧化物，以类似的方式产生保留在水溶液中的亚硝酸。 此后，洗涤溶液在受控条件下再生，产生含有较高浓度的回收的氮氧化物的气流和可回收的洗涤溶液。 回收的氮氧化物可用于制造硝酸或其他化合物或分解成无害气体。

    Gas-purifying composition and method of producing it
    10.
    发明授权
    Gas-purifying composition and method of producing it 失效
    气体净化组合物及其制备方法

    公开(公告)号：US4116881A

    公开(公告)日：1978-09-26

    申请号：US771677

    申请日：1977-02-24

    Applicant: Tsuneo Shibata ,  Masao Maki ,  Masao Suzuki ,  Hidehiko Kawabe

    Inventor： Tsuneo Shibata ,  Masao Maki ,  Masao Suzuki ,  Hidehiko Kawabe

    IPC: B01D53/56 ,  B01J23/02 ,  B01J23/34 ,  C01B21/36 ,  B01J23/04 ,  B01J27/02 ,  B01J27/08

    CPC classification number: C01B21/36 ,  A62B21/00 ,  B01D53/56

    Abstract: In removing nitrogen oxide from a gas containing it, the gas is passed through a region where at least one of calcium sulfate and calcium hydroxide coexists with powerful oxidation agents such as sodium chlorite, potassium permanganate, etc. thereby removing the nitrogen oxide, mainly nitrogen monoxide, from the gas. This method is very effective in purifying exhaust gases resulting from burning operations, since 80 to 90% or more of the nitrogen oxide contained in the exhaust gases is nitrogen monoxide. In addition, this method is also effective in purifying indoor air.

    Abstract translation: 从含有气体的气体中除去氮氧化物后，气体通过硫酸钙和氢氧化钙中的至少一种与强氧化剂如亚氯酸钠，高锰酸钾等共存的区域，从而除去氮氧化物，主要是氮 一氧化碳，从气体。 由于废气中含有的氮氧化物的80〜90％以上是一氧化氮，所以这种方法对于净化由燃烧操作产生的废气非常有效。 此外，该方法也有效地净化室内空气。

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