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    PRESSURE CONTROL TO REDUCE PUMP POWER FLUCTUATIONS
    2.
    发明公开
    PRESSURE CONTROL TO REDUCE PUMP POWER FLUCTUATIONS 审中-公开
    压力控制，以减少泵的功率波动

    公开(公告)号：EP3246089A3

    公开(公告)日：2018-02-28

    申请号：EP17158672.0

    申请日：2017-03-01

    申请人： Chevron Phillips Chemical Company LP

    发明人： HOTTOVY, John D. ,  KUFELD, Scott E.

    IPC分类号： B01J19/00 ,  B01J19/24

    CPC分类号： C08F210/16 ,  B01J19/0006 ,  B01J19/0033 ,  B01J19/2435 ,  B01J19/2445 ,  B01J19/245 ,  B01J2219/00162 ,  B01J2219/00207 ,  B01J2219/00218 ,  B01J2219/0024 ,  B01J2219/0027 ,  C08F2400/02 ,  G01L13/00 ,  C08F10/00 ,  C08F2/14 ,  C08F2/01

    摘要： A polymerization process comprises circulating, with a pump, a reaction mixture slurry in a polymerization loop reactor during a polymerization process, detecting a pressure change in the reaction mixture slurry downstream of the pump, generating, by a pressure controller, a takeoff valve actuation signal for a takeoff valve based on the pressure change, generating, by the pressure controller, a correction to the takeoff valve actuation signal, generating, by the pressure controller, a time delay for the correction, applying the correction to the takeoff valve actuation signal to generate a corrected takeoff valve actuation signal, providing the corrected takeoff valve actuation signal to the takeoff valve after the time delay, and adjusting a position of the takeoff valve in response to providing the corrected takeoff valve actuation signal. The reactor pressure is based on the takeoff valve position.

    摘要翻译： 聚合方法包括：在聚合过程中用泵将反应混合物浆液在聚合环流反应器中循环，检测泵下游的反应混合物浆料中的压力变化，通过压力控制器产生起飞阀致动信号 对于基于压力变化的起飞阀，通过压力控制器产生对起飞气门致动信号的校正，通过压力控制器产生用于校正的时间延迟，将校正应用于起飞气门致动信号至 产生校正的起飞气门致动信号，在延时之后将校正的起飞气门致动信号提供给起飞气门，以及响应于提供校正的起飞气门致动信号而调整起飞气门的位置。 反应堆压力取决于起飞阀的位置。

    HYDROGEN SULFIDE GAS PRODUCTION PLANT SYSTEM AND METHOD FOR RECOVERING AND USING HYDROGEN SULFIDE GAS
    4.
    发明公开
    HYDROGEN SULFIDE GAS PRODUCTION PLANT SYSTEM AND METHOD FOR RECOVERING AND USING HYDROGEN SULFIDE GAS 审中-公开
    生产厂氢气和方法进行恢复和氢气的使用

    公开(公告)号：EP2881364A4

    公开(公告)日：2016-03-16

    申请号：EP13825169

    申请日：2013-07-08

    申请人： SUMITOMO METAL MINING CO

    发明人： NAKAI OSAMU ,  MATSUBARA SATOSHI ,  HIROSE TOMOYUKI ,  NAKAGAWA KOUICHI ,  NAKAMURA MASAFUMI

    IPC分类号： C01B17/16 ,  B01J19/24 ,  C22B3/44 ,  C22B23/00

    CPC分类号： C01B17/162 ,  B01J19/2445 ,  B01J2219/00006 ,  B01J2219/00038 ,  C01B17/16 ,  Y10T137/0324

    摘要： The present invention allows low-concentration hydrogen sulfide gas, which is generated at the time of regular inspection or start-up of a production plant, to be efficiently recovered and effectively supplied to a processing plant that uses hydrogen sulfide gas. In the invention, the hydrogen sulfide gas production plant is provided with a first supply pipe (14) that supplies hydrogen sulfide gas obtained from a sulfur recovery facility (13) to a processing plant X, and a second supply pipe (16) that is branched at a predetermined point (15) in the first supply pipe (14) and supplies the hydrogen sulfide gas from the sulfur recovery facility (13) to the processing plant X. The first supply pipe (14) has a concentration meter (22) that is provided on the upstream side than the branch point (15) and measures the concentration of the hydrogen sulfide gas. The first supply pipe (14) and the second supply pipe (16) have ON/OFF valves (23), (26), respectively, that are provided on the downstream side of the branch point (15) and perform ON/OFF control of the supply to the processing plant X through the supply pipe.

    VERFAHREN ZUR FÄLLUNG SCHWERLÖSLICHER STOFFE, WIE Z.B. BARIUMSULFAT UND FÄLLKAPSEL
    8.
    发明公开
    VERFAHREN ZUR FÄLLUNG SCHWERLÖSLICHER STOFFE, WIE Z.B. BARIUMSULFAT UND FÄLLKAPSEL 审中-公开
    沉淀法节制的物质，如 硫酸钡和沉淀胶囊

    公开(公告)号：EP1414749A1

    公开(公告)日：2004-05-06

    申请号：EP02764666.0

    申请日：2002-07-11

    申请人： Sachtleben Chemie GmbH

    发明人： SELTER, Udo

    IPC分类号： C01F11/46 ,  B01J19/24 ,  B01J19/00

    CPC分类号： C01F11/462 ,  B01J19/2445

    摘要： The invention relates to a precipitation method and corresponding precipitation capsules for the precipitation of poorly-soluble materials such as barium sulphate for example, whereby the desired poorly-soluble material is obtained by mixing two individual components in a precipitation capsule and reaction together of said individual components. According to the invention, precipitates with defined particle sizes in the range from 0.1 - 2 µm with high throughput may be achieved, whereby the precipitation is carried out continuously in one of the precipitation capsules with differing precipitation volumes (residence times) with subsequent homogenisation in a static mixer.