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    Apparatus for shielding an electrical circuit from electromagnetic interference
    3.
    发明授权
    Apparatus for shielding an electrical circuit from electromagnetic interference 失效
    用于屏蔽电路免受电磁干扰的装置

    公开(公告)号：US4829432A

    公开(公告)日：1989-05-09

    申请号：US138276

    申请日：1987-12-28

    申请人： Marc Hershberger ,  Carl Stevens ,  Peter Ozug

    发明人： Marc Hershberger ,  Carl Stevens ,  Peter Ozug

    IPC分类号： H05K9/00

    CPC分类号： H05K9/0045 ,  Y10S174/34

    摘要： Apparatus is disclosed for shielding an electric circuit, mounted on a circuit board, from electromagnetic interference (EMI). The electrical circuit is mounted on one side of a circuit board. A conductive layer on the other side of the circuit board functions as a ground plane. An enclosure of insulating material is open on one side and has an inside surface of electrically conductive material. The circuit board and enclosure are joined together so that the electrical circuit on the circuit board is substantially completely surrounded by the electrically conductive material on the inside surface of the enclosure and by the ground plane of the circuit board. Thus, there is provided an effective EMI shield for the electrical circuit.

    摘要翻译： 公开了用于屏蔽安装在电路板上的电路的电磁干扰（EMI）的装置。 电路安装在电路板的一侧。 电路板另一侧的导电层用作接地层。 绝缘材料的外壳在一侧开口并具有导电材料的内表面。 电路板和外壳被连接在一起，使得电路板上的电路基本上被外壳的内表面上的导电材料和电路板的接地平面完全包围。 因此，为电路提供了有效的EMI屏蔽。

    Low NOx FCC catalyst regeneration process
    5.
    发明授权
    Low NOx FCC catalyst regeneration process 有权
    低NOx FCC催化剂再生过程

    公开(公告)号：US07914666B1

    公开(公告)日：2011-03-29

    申请号：US11540175

    申请日：2006-09-29

    申请人： Robert Mehlberg ,  Frank Rosser, Jr. ,  Zhihao Fei ,  Carl Stevens

    发明人： Robert Mehlberg ,  Frank Rosser, Jr. ,  Zhihao Fei ,  Carl Stevens

    IPC分类号： C10G11/18

    CPC分类号： C10G11/182

    摘要： An FCC process producing lower NOx emissions during regeneration by using excess oxygen levels at less than or equal to about 0.5 mol-% and a plenum temperature above about 730° C. (about 1350° F.). The process may further include limiting the Pt content in the catalyst to less than or equal to about 0.5 ppm. NOx emissions, NO to NO2, produced through this process may be equal to or less than 25 ppmv. The process may also include adjusting the metal content of the feedstock for such metals as antimony, nickel, or vanadium. Additional variables for reducing NOx emissions that may be used in conjunction with this process may include increasing the flue gas residence time, injecting NH3 into the flue gas, adding or using NOx-reducing catalysts, increasing stripping of the catalyst, and increasing the catalyst zeolite to matrix ratio.

    摘要翻译： FCC方法在再生期间通过使用小于或等于约0.5mol％的过量氧气浓度和高于约730℃（1350°F）的增压室产生较低的NOx排放。 该方法还可以包括将催化剂中的Pt含量限制为小于或等于约0.5ppm。 通过该过程产生的NOx排放NO，NO2可以等于或小于25ppmv。 该方法还可以包括调整诸如锑，镍或钒等金属的原料的金属含量。 用于减少可能与该方法结合使用的NOx排放的附加变量可包括增加烟道气停留时间，将NH 3注入烟道气中，添加或使用NOx还原催化剂，增加催化剂的汽提和增加催化剂沸石 到矩阵比。