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    Gas Distribution in Oxidation Reactions
    122.
    发明申请
    Gas Distribution in Oxidation Reactions 审中-公开

    公开(公告)号：US20180141018A1

    公开(公告)日：2018-05-24

    申请号：US15577030

    申请日：2016-06-03

    Applicant: ExxonMobil Chemical Chemical Patents Inc.

    Inventor： Yesim Igci ,  Bryan A. Patel ,  Min Chang

    IPC: B01J8/22 ,  B01J4/00 ,  C07C407/00 ,  C07C409/14

    CPC classification number: B01J8/22 ,  B01J4/004 ,  C07C407/00 ,  C07C409/14 ,  C07C2601/14

    Abstract: Systems, methods, and apparatus for distribution of oxygen-containing gas within a gas-liquid oxidation reaction are provided herein. The invention is particularly suited for oxidation of liquid-phase organic reactants with oxidizing gas, such as the oxidation of cyclohexylbenzene to cyclohexylbenzene hydroperoxide using an oxygen-containing gas. The oxygen-containing gas is distributed through a gas distributor and into a liquid-phase reaction medium within an oxidation reactor. In some aspects, this achieves a high degree of uniformity of oxygen concentration within the liquid-phase reaction medium. The gas distributor is disposed within a lower portion of the reactor, and may comprise a network of conduits in fluid communication with each other, which are arranged within a plane that is substantially parallel to a bottom surface of the reactor. A plurality of orifices are disposed on the conduits, such that oxygen-containing gas flows through the conduits and into the liquid-phase reaction medium via the orifices.

    Apparatus for introduction of droplets of a monomer solution into a reactor
    124.
    发明授权
    Apparatus for introduction of droplets of a monomer solution into a reactor 有权

    公开(公告)号：US09925511B2

    公开(公告)日：2018-03-27

    申请号：US15320771

    申请日：2015-06-23

    Applicant: BASF SE

    Inventor： Andreas Daiss ,  Robert Bayer ,  Rudolf Schliwa ,  Jürgen Freiberg ,  Karl J. Possemiers ,  Marco Krüger

    IPC: B01J19/06 ,  B01J4/00 ,  B01J19/24 ,  C08F20/18

    CPC classification number: B01J19/06 ,  B01J4/004 ,  B01J8/1818 ,  B01J19/24 ,  B01J2208/00371 ,  B01J2208/0092 ,  B01J2208/00938 ,  B01J2219/24 ,  C08F20/18

    Abstract: An apparatus for introducing droplets of a monomer solution for production of poly(meth)acrylate into a reactor for droplet polymerization, comprising at least one channel or a dropletizer head, the channel or the dropletizer head being sealed at its base by a dropletizer plate, the dropletizer plate having holes through which the monomer solution is introduced into the reactor, and the dropletizer plate being configured such that holes that, in an axially symmetric dropletizer plate or in an annular dropletizer plate or in one configured as a ring segment, are not on a center line of the dropletizer plate or, in the case of a circular dropletizer plate, are not at the center of the dropletizer plate are aligned such that monomer solution is introduced through the holes into the reactor at an angle to the vertical, and the holes in the case of a radial alignment of axially symmetric dropletizer plates being aligned such that the angle at which the monomer solution is introduced into the reactor decreases in the direction of the axis of the reactor and, in the case of dropletizer plates arranged parallel to one another or of concentrically arranged dropletizer plates, each being aligned on a line parallel to the center line or line running concentrically about the center, such that the angle at which the monomer solution is introduced into the reactor is constant.

    REVERSE-PHASE POLYMERISATION PROCESS
    127.
    发明申请
    REVERSE-PHASE POLYMERISATION PROCESS 审中-公开

    公开(公告)号：US20160159939A1

    公开(公告)日：2016-06-09

    申请号：US14908872

    申请日：2014-07-29

    Applicant: BASF SE

    Inventor： Pascal HESSE ,  Aleksandra JELICIC ,  Gabriela Eugenia FONSECA ZEPEDA ,  Robert HASCHICK ,  Shankara Narayanan KEELAPANDAL RAMAMOORTHY ,  Gareth Ian NAYLOR ,  John Scott BARRATT ,  Oliver SOETJE ,  Marcel LIEVRE ,  Florian RAINAU ,  Mark LEBKUECHER

    IPC: C08F2/32 ,  C08F2/01 ,  C08F220/56 ,  B01J19/10

    CPC classification number: C08F2/32 ,  B01J4/002 ,  B01J4/004 ,  B01J4/007 ,  B01J4/02 ,  B01J19/10 ,  B01J19/123 ,  B01J2219/0869 ,  B01J2219/0888 ,  B01J2219/24 ,  C08F2/01 ,  C08F220/06 ,  C08F220/20 ,  C08F220/56 ,  C08F226/10 ,  C08F2220/382 ,  C08F2220/385 ,  C08F220/34

    Abstract: A reverse-phase suspension polymerisation process for the manufacture of polymer beads comprising forming aqueous monomer beads comprising an aqueous solution of water-soluble ethylenically unsaturated monomer or monomer blend and polymerising the monomer or monomer blend, to form polymer beads while suspended in a non-aqueous liquid, and recovering polymer beads, in which the process comprises providing in a vessel (1) a volume (2) of non-aqueous liquid wherein the volume of non-aqueous liquid extends between at least one polymer bead discharge point (3) and at least one monomer feed point (4), feeding the aqueous monomer or monomer blend through orifices (5) into, or onto, the non-aqueous liquid to form aqueous monomer beads, allowing the aqueous monomer beads to flow towards the polymer bead discharge point initiating polymerisation of the aqueous monomer beads to form polymerising beads, wherein the polymerising beads form polymer beads when they reach the polymer bead discharge point, removing a suspension of the polymer beads in non-aqueous liquid from the vessel at the polymer bead discharge point and recovering, water soluble or water swellable polymer beads from the suspension, in which the aqueous monomer or monomer blend and/or the orifices is/are vibrated such that the frequency multiplied by the weight average droplet diameter is between 150 and 800 mm/s. The invention also relates to the apparatus suitable for carrying out a reverse-phase suspension polymerisation and polymer beads obtainable by the process or employing the apparatus. Furthermore, the invention also relates to polymer beads having a weight mean particle size in the range of 0.05 to 5 mm which are held in a container in an amount of at least 300 kg having a standard deviation of particle size less than 20%. In addition, the invention also provides polymer beads having a weight mean particle size in the range 0.05 to 5 mm having a standard deviation of particle size less than 20% and having an amount of residual acrylamide of less than 500 ppm.

    MULTIPLE-BED DOWNFLOW REACTOR COMPRISING A MIXING DEVICE, USE OF SAID REACTOR, AS WELL AS MIXING METHOD
    130.
    发明申请
    MULTIPLE-BED DOWNFLOW REACTOR COMPRISING A MIXING DEVICE, USE OF SAID REACTOR, AS WELL AS MIXING METHOD 审中-公开
    包含混合装置的多层下流反应器，混合方法的使用方法

    公开(公告)号：US20150258517A1

    公开(公告)日：2015-09-17

    申请号：US14434109

    申请日：2013-10-08

    Applicant: SHELL OIL COMPANY

    Inventor： Sujatha Degaleesan ,  Benoit Witkamp

    IPC: B01J8/04 ,  C10G65/02

    CPC classification number: B01J8/0453 ,  B01J4/002 ,  B01J4/004 ,  B01J8/0492 ,  B01J8/0496 ,  B01J19/26 ,  B01J2208/00353 ,  B01J2208/00362 ,  B01J2208/00371 ,  B01J2208/00849 ,  B01J2208/00902 ,  B01J2208/00911 ,  B01J2208/027 ,  B01J2219/00119 ,  C10G49/002 ,  C10G65/02 ,  C10G65/12

    Abstract: The present invention relates to a multiple-bed downflow reactor comprising vertically spaced beds of solid contact material and a mixing device positioned in an inter bed space between adjacent beds. The mixing device comprises a loop of first nozzles distributed around a vertical axis and arranged for ejecting a fluid in a first ejection direction into said inter bed space, on the one hand, and a loop of second nozzles distributed around the vertical axis and arranged for ejecting a fluid in a second ejection direction into said inter bed space, on the other hand. The first ejection direction is directed inwardly with respect to the loop of first nozzles. The second ejection direction is directed outwardly with respect to the loop of second nozzles.

    Abstract translation: 本发明涉及一种多床下流式反应器，其包括垂直间隔开的固体接触材料床和位于相邻床之间的床间空间中的混合装置。 混合装置包括围绕垂直轴线分布的第一喷嘴的环，并且布置成用于将第一喷射方向上的流体沿第一喷射方向喷射到所述间隙空间中，并且一方面围绕垂直轴分布一排第二喷嘴， 另一方面，将第二排出方向的流体喷射到所述层间空间中。 第一喷射方向相对于第一喷嘴的环向内指向。 第二排出方向相对于第二喷嘴的环向外指向。

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