利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

66 条记录 (耗时 0.024 秒)

    LOW TEMPERATURE OXIDATION OF AMMONIA IN NITRIC ACID PRODUCTION
    2.
    发明申请
    LOW TEMPERATURE OXIDATION OF AMMONIA IN NITRIC ACID PRODUCTION 审中-公开
    硝酸在硝酸生产中的低温氧化

    公开(公告)号：US20120183467A1

    公开(公告)日：2012-07-19

    申请号：US13006460

    申请日：2011-01-14

    申请人： Gongshin Qi ,  Wei Li ,  Steven J. Schmieg ,  Chang H. Kim ,  David B. Brown

    发明人： Gongshin Qi ,  Wei Li ,  Steven J. Schmieg ,  Chang H. Kim ,  David B. Brown

    IPC分类号： C01B21/38

    CPC分类号： B01J37/0009 ,  B01J23/34 ,  B01J23/83 ,  B01J35/04 ,  B01J37/0215 ,  B01J37/0228 ,  B01J2523/00 ,  C01B21/26 ,  C01B21/265 ,  B01J2523/24 ,  B01J2523/3706 ,  B01J2523/845 ,  B01J2523/72

    摘要： Ammonia in a gas stream comprising oxygen and nitrogen may be effectively completely oxidized to a mixture of NO and NO2 for further processing to nitric acid. The gas stream is flowed over fine particles of La1-xSrxCoO3 and/or La1-xSrxMnO3, and/or La1-xSrxFeO3 where x=about 0.1, 0.2, or 0.3. The particles are supported as catalyst layers on gas stream-contacting surfaces of a flow-through catalyzed oxidation reactor. These relatively inexpensive perovskite-type materials may be used to promote oxidation of ammonia at temperatures below about 450° C. to about 500° C. to selectively produce a mixture of NO and NO2. This mixture is suitable for further oxidation to NO2 for adsorption into water to make nitric acid.

    摘要翻译： 包含氧和氮的气流中的氨可以有效地完全氧化成NO和NO 2的混合物，以进一步加工成硝酸。 气流在La1-xSrxCoO3和/或La1-xSrxMnO3和/或La1-xSrxFeO3的细颗粒上流动，其中x =约0.1,0.2或0.3。 颗粒在流通催化的氧化反应器的气流接触表面上作为催化剂层被支撑。 这些相对便宜的钙钛矿型材料可用于在低于约450℃至约500℃的温度下促进氨的氧化，以选择性地产生NO和NO 2的混合物。 该混合物适于进一步氧化成NO2以吸附到水中以制备硝酸。

    Method for monitoring exhaust gas aftertreatment devices
    3.
    发明授权
    Method for monitoring exhaust gas aftertreatment devices 有权
    废气后处理装置的监测方法

    公开(公告)号：US08387448B2

    公开(公告)日：2013-03-05

    申请号：US13008937

    申请日：2011-01-19

    申请人： Wei Li ,  David B. Brown ,  Chang H. Kim

    发明人： Wei Li ,  David B. Brown ,  Chang H. Kim

    IPC分类号： G01M15/10

    CPC分类号： G01M15/102

    摘要： A method for monitoring performance of a passive selective catalytic reduction system includes operating the internal combustion engine in a preconditioning mode. Subsequent to the preconditioning, an air/fuel excursion is introduced into the exhaust gas feedstream and a signal output from a sensor monitoring the exhaust gas feedstream in the selective catalytic reduction system during the air/fuel excursion is monitored. An operating effectiveness is determined for the selective catalytic reduction system correlated to the signal output from the sensor monitoring the exhaust gas feedstream.

    摘要翻译： 一种用于监测被动选择性催化还原系统的性能的方法包括以预处理模式操作内燃机。 在预处理之后，空气/燃料偏移被引入废气进料流中，并且监测在空气/燃料偏移期间在监测选择性催化还原系统中的废气进料流的传感器输出的信号。 确定与选择性催化还原系统相关的操作有效性，该系统与从监测废气进料流的传感器输出的信号相关。

    METHOD FOR MONITORING EXHAUST GAS AFTERTREATMENT DEVICES
    6.
    发明申请
    METHOD FOR MONITORING EXHAUST GAS AFTERTREATMENT DEVICES 有权
    监测排气装置的方法

    公开(公告)号：US20120180558A1

    公开(公告)日：2012-07-19

    申请号：US13008937

    申请日：2011-01-19

    申请人： Wei Li ,  David B. Brown ,  Chang H. Kim

    发明人： Wei Li ,  David B. Brown ,  Chang H. Kim

    IPC分类号： G01M15/10

    CPC分类号： G01M15/102

    摘要： A method for monitoring performance of a passive selective catalytic reduction system includes operating the internal combustion engine in a preconditioning mode. Subsequent to the preconditioning, an air/fuel excursion is introduced into the exhaust gas feedstream and a signal output from a sensor monitoring the exhaust gas feedstream in the selective catalytic reduction system during the air/fuel excursion is monitored. An operating effectiveness is determined for the selective catalytic reduction system correlated to the signal output from the sensor monitoring the exhaust gas feedstream.

    摘要翻译： 一种用于监测被动选择性催化还原系统的性能的方法包括以预处理模式操作内燃机。 在预处理之后，空气/燃料偏移被引入废气进料流中，并且监测在空气/燃料偏移期间在监测选择性催化还原系统中的废气进料流的传感器输出的信号。 确定与选择性催化还原系统相关的操作有效性，该系统与从监测废气进料流的传感器输出的信号相关。

    EXHAUST AFTERTREATMENT SYSTEM FOR COMPRESSION-IGNITION ENGINES
    8.
    发明申请
    EXHAUST AFTERTREATMENT SYSTEM FOR COMPRESSION-IGNITION ENGINES 审中-公开
    用于压缩点火发动机的排气后处理系统

    公开(公告)号：US20130019589A1

    公开(公告)日：2013-01-24

    申请号：US13185531

    申请日：2011-07-19

    申请人： Chang H. Kim ,  Gongshin Qi ,  Wei Li

    发明人： Chang H. Kim ,  Gongshin Qi ,  Wei Li

    IPC分类号： F01N3/035

    CPC分类号： B01D53/9477 ,  B01D53/9409 ,  B01D53/9495 ,  F01N3/2066 ,  F01N3/2803 ,  F01N13/0093 ,  F01N2610/02 ,  Y02C20/10 ,  Y02T10/22 ,  Y02T10/24

    摘要： An internal combustion engine configured to operate in a compression-ignition combustion mode includes an exhaust aftertreatment system. The exhaust aftertreatment system includes a catalyst device fluidly coupled upstream of an ammonia-selective catalytic reduction device. The, catalyst device includes first, second, and third elements fluidly coupled in series. The first element includes a three-way catalytic element, the second element includes a NOx adsorber, and the third element includes an oxidation catalytic element.

    摘要翻译： 构造成以压缩点火燃烧模式工作的内燃机包括排气后处理系统。 排气后处理系统包括在氨选择性催化还原装置的上游流体耦合的催化剂装置。 催化剂装置包括串联流体耦合的第一，第二和第三元件。 第一元件包括三元催化元件，第二元件包括NOx吸附器，第三元件包括氧化催化元件。