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    Process control transmitter with electrical feedthrough assembly
    3.
    发明授权
    Process control transmitter with electrical feedthrough assembly 失效
    具有电气馈通组件的过程控制变送器

    公开(公告)号：US5954526A

    公开(公告)日：1999-09-21

    申请号：US725745

    申请日：1996-10-04

    申请人： Dennis J. Smith

    发明人： Dennis J. Smith

    IPC分类号： G01F23/284 ,  G01L19/14 ,  H01R13/44

    CPC分类号： G01F23/284 ,  G01L19/14

    摘要： An explosion proof electrical feedthrough assembly is provided in a process variable transmitter which has a sensor sensing a process variable and providing a sensor output signal indicative of the process variable. The transmitter also includes a processing circuit coupled to the sensor to receive the sensor output signal and provide a transmitter output signal based on the sensor output signal. The feedthrough assembly includes a terminal block which is coupled to the processing circuit and includes power supply terminal connectors and communication signal connectors. The communication signal connectors are arranged generally radially about the power supply terminal connectors.

    摘要翻译： 在过程变量发生器中提供了一种防爆电馈通组件，其具有感测过程变量并提供表示过程变量的传感器输出信号的传感器。 发射机还包括耦合到传感器以接收传感器输出信号并且基于传感器输出信号提供发射机输出信号的处理电路。 馈通组件包括耦合到处理电路并包括电源端子连接器和通信信号连接器的端子块。 通信信号连接器大致围绕电源端子连接器径向布置。

    Dehydrogenation catalyst
    5.
    发明授权
    Dehydrogenation catalyst 失效
    脱氢催化剂

    公开(公告)号：US4467046A

    公开(公告)日：1984-08-21

    申请号：US337943

    申请日：1982-01-07

    申请人： James L. Smith ,  Bill S. Masters ,  Dennis J. Smith

    发明人： James L. Smith ,  Bill S. Masters ,  Dennis J. Smith

    IPC分类号： B01J23/887 ,  C07C5/333 ,  B01J23/10 ,  B01J23/78 ,  B01J23/88 ,  B01J27/20

    CPC分类号： B01J23/8872 ,  C07C5/3332

    摘要： Catalysts found to be particularly effective in the dehydrogenation of alkyl aromatics, for example ethylbenzene to styrene, where the catalysts include iron oxide, 12 to 30% of an alkali metal compound, 3 to 7% of a cerium compound, 1.5 to 6.0% of a molybdenum compound and 1 to 8% of a calcium compound. Catalyst can also include 0 to 8.0% of a chromium compound.

    摘要翻译： 发现催化剂在烷基芳族化合物脱氢反应中特别有效，例如乙苯至苯乙烯，其中催化剂包括氧化铁，12-30％碱金属化合物，3-7％铈化合物，1.5-6.0％ 钼化合物和1〜8％的钙化合物。 催化剂还可以包括0至8.0％的铬化合物。

    Radial reactor loading of a dehydrogenation catalyst
    6.
    发明授权
    Radial reactor loading of a dehydrogenation catalyst 有权
    脱氢催化剂的径向反应器负载

    公开(公告)号：US07435862B2

    公开(公告)日：2008-10-14

    申请号：US11291323

    申请日：2005-12-01

    申请人： David L. Williams ,  Andrzej Rokicki ,  Dennis J. Smith ,  Kyle Mankin

    发明人： David L. Williams ,  Andrzej Rokicki ,  Dennis J. Smith ,  Kyle Mankin

    IPC分类号： C07C5/367

    CPC分类号： B01J23/04 ,  B01J8/0411 ,  B01J35/0006 ,  C07C5/333 ,  C07C2521/04 ,  C07C2521/16 ,  C07C2523/04 ,  C07C2523/745

    摘要： A radial reactor for utilization for catalytic reactions of gaseous or liquid feedstreams including an annular catalyst bed, wherein the material contained within the catalyst bed includes an active catalyst material, contained within an outer ring-shaped layer of the catalyst bed, and a generally inert material, contained within an inner ring-shaped layer of the catalyst bed, wherein the generally inert material includes a potassium-containing compound, such as potassium oxide, hydroxide, carbonate or bicarbonate.

    摘要翻译： 一种径向反应器，其用于气态或液态进料流的催化反应，包括环形催化剂床，其中包含在催化剂床内的材料包含活性催化剂材料，其包含在催化剂床的外环形层内，并且通常为惰性的 材料，其包含在催化剂床的内环形层内，其中通常为惰性的材料包括含钾化合物，例如氧化钾，氢氧化物，碳酸盐或碳酸氢盐。

    PTFE window seal with EMI shielding
    7.
    发明授权
    PTFE window seal with EMI shielding 有权
    PTFE窗密封带EMI屏蔽

    公开(公告)号：US06325391B1

    公开(公告)日：2001-12-04

    申请号：US09301419

    申请日：1999-04-28

    申请人： Dennis J. Smith ,  Randall C. Olson ,  Steven D. Kruse

    发明人： Dennis J. Smith ,  Randall C. Olson ,  Steven D. Kruse

    IPC分类号： F16J1508

    CPC分类号： G01F23/292 ,  G01F23/284 ,  Y10S277/92

    摘要： A process seal made of a material such as polytetrafluoroethylene is used as a microwave window in a radar tank level gauge. The periphery of the process seal is surrounded by a metal containment ring that is fitted to the periphery to limit the amount of expansion outwardly of the process seal material as well as provide for localized loading at the periphery for clamping pressures on the seal. Electromagnetic radiation shielding is provided not only by the containment ring, but also by an EMI shielding O-ring mounted in a groove on a sealing end of the containment ring. A process environmental O-ring is carried by the process seal in an outer shoulder groove that is enclosed by the containment ring.

    摘要翻译： 由诸如聚四氟乙烯的材料制成的工艺密封件用作雷达罐液位计中的微波窗口。 工艺密封件的周边由金属容纳环围绕，该金属容纳环被安装到外围以限制处理密封材料向外的膨胀量，并且在周边处提供用于夹紧密封件上的压力的局部加载。 电磁辐射屏蔽不仅由容纳环提供，还通过安装在安全壳密封端的槽中的EMI屏蔽O形环来提供。 工艺环境O型圈由处理密封件承载在由容纳环包围的外肩槽中。

    Catalyst for the dehydrogenation of ethyl benzene to STYRENE prepared with a high purity iron precursor
    8.
    发明授权
    Catalyst for the dehydrogenation of ethyl benzene to STYRENE prepared with a high purity iron precursor 有权
    用高纯铁前体制备的乙苯脱氢至苯乙烯的催化剂

    公开(公告)号：US07271126B2

    公开(公告)日：2007-09-18

    申请号：US10876150

    申请日：2004-06-24

    申请人： Dennis J. Smith ,  Robert J. O'Brien ,  X. D. Hu

    发明人： Dennis J. Smith ,  Robert J. O'Brien ,  X. D. Hu

    IPC分类号： B01J23/00 ,  B01J21/00 ,  B01J20/00

    CPC分类号： B01J37/0045 ,  B01J23/002 ,  B01J23/8993 ,  B01J37/0226 ,  B01J37/031 ,  B01J37/12

    摘要： A method for producing a catalyst for use in the dehydrogenation of ethylbenzene to styrene is disclosed. The catalyst of the present invention comprises a high purity metal and at least one promoter in the form of solid oxides, oxide hydrates, hydroxides, hydroxycarbonates or metals. The catalyst is prepared via a method which comprises the preparation of at least one high purity iron precursor with or without an additional support material and which uses a nominal amount of water in the catalyst production. The catalyst pellets prepared with the high purity metal precursor are essentially free of sulfur and chloride contaminants.

    摘要翻译： 公开了一种用于乙苯脱氢成苯乙烯的催化剂的制备方法。 本发明的催化剂包含高纯度金属和至少一种固体氧化物，氧化物水合物，氢氧化物，羟基碳酸酯或金属形式的助催化剂。 催化剂通过包括制备至少一种高纯铁前体的方法来制备，该方法具有或不具有另外的载体材料，并且在催化剂生产中使用标称量的水。 用高纯度金属前体制备的催化剂颗粒基本上不含硫和氯化物污染物。