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    Urea production process and plant
    1.
    发明授权
    Urea production process and plant 有权

    公开(公告)号：US12103905B2

    公开(公告)日：2024-10-01

    申请号：US18282123

    申请日：2022-04-05

    Applicant: Casale SA

    Inventor： Paolo Bertini ,  Matteo Fumagalli

    IPC: C07C273/04 ,  B01J19/00 ,  B01J19/18 ,  C07C273/16

    CPC classification number: C07C273/04 ,  B01J19/0013 ,  B01J19/1875 ,  C07C273/16 ,  B01J2219/00024 ,  B01J2219/00092

    Abstract: Process for the preparation of urea granules comprising the steps of obtaining an aqueous urea solution from one or more synthesis and recovery steps wherein ammonia and carbon dioxide are reacted together, subjecting the aqueous urea solution to an evaporation step wherein water is removed to obtain a urea melt (1), processing and treating said urea melt in a granulation step (7) and optionally in a cooling section (10) to obtain solid urea granules (14); the process further comprises a scrubbing step (3) of granulation offgas and an atmospheric evaporation step (32) to recover a urea solution (2) and a water-saturated air stream (18): the water-saturated air stream is fed back to the scrubbing section (3) without condensation, and the recovered urea solution is conveyed to the granulation step (7).

    UREA PRODUCTION PROCESS AND PLANT
    2.
    发明公开
    UREA PRODUCTION PROCESS AND PLANT 审中-公开

    公开(公告)号：US20240217924A1

    公开(公告)日：2024-07-04

    申请号：US18282123

    申请日：2022-04-05

    Applicant: Casale SA

    Inventor： Paolo Bertini ,  Matteo Fumagalli

    IPC: C07C273/04 ,  B01J19/00 ,  B01J19/18 ,  C07C273/16

    CPC classification number: C07C273/04 ,  B01J19/0013 ,  B01J19/1875 ,  C07C273/16 ,  B01J2219/00024 ,  B01J2219/00092

    Abstract: Process for the preparation of urea granules comprising the steps of obtaining an aqueous urea solution from one or more synthesis and recovery steps wherein ammonia and carbon dioxide are reacted together, subjecting the aqueous urea solution to an evaporation step wherein water is removed to obtain a urea melt (1), processing and treating said urea melt in a granulation step (7) and optionally in a cooling section (10) to obtain solid urea granules (14); the process further comprises a scrubbing step (3) of granulation offgas and an atmospheric evaporation step (32) to recover a urea solution (2) and a water-saturated air stream (18): the water-saturated air stream is fed back to the scrubbing section (3) without condensation, and the recovered urea solution is conveyed to the granulation step (7).

    Polymerization reactor for butyl rubber production
    5.
    发明授权
    Polymerization reactor for butyl rubber production 有权
    丁基橡胶生产聚合反应器

    公开(公告)号：US09428593B2

    公开(公告)日：2016-08-30

    申请号：US14122039

    申请日：2011-05-26

    Applicant: Flavio Simola ,  Aldo Appetiti ,  Andrea Angeletti

    Inventor： Flavio Simola ,  Aldo Appetiti ,  Andrea Angeletti

    IPC: B01J19/00 ,  B01J19/18 ,  C08F2/00 ,  C08F2/01 ,  C08F210/12 ,  C08F210/00 ,  C08F210/04 ,  C08F210/06 ,  C08F210/08 ,  C08F236/00 ,  C08F236/02 ,  C08F236/04 ,  C08F236/08

    CPC classification number: C08F2/01 ,  B01J19/006 ,  B01J19/1875 ,  B01J2219/00081 ,  B01J2219/00254 ,  C08F210/12 ,  C08F236/08

    Abstract: A low temperature polymerization reactor for the production of butyl rubber by catalytic polymerization of isobutylene with small amount of a conjugated diolefin such as isoprene includes: an extended upper head with fluid deflector fixed to the top tube-sheet, the shapes of the head and deflector being optimized in order to reach a very homogeneous slurry velocity in the rows of tubes and to minimize the pressure drop due to the inversion of flow from up-flow to down-flow and to the entrance of the slurry in the tubes; an hemispheric bottom head with fluid deflectors placed between the impeller and the bottom itself and designed to minimize the pressure drop due to the inversion of flow from down-flow to up-flow; and straightening baffles inside the draft tube, which shape and dimensions are optimized to turn the radial velocity components produced by the rotation of the impeller into axial velocity components.

    Abstract translation: 用于通过异丁烯与少量共轭二烯烃如异戊二烯的催化聚合生产丁基橡胶的低温聚合反应器包括：具有固定在顶部管板上的流体偏转器的延伸的上部头部，头部和偏转器的形状 被优化以便在管排中达到非常均匀的浆料速度并且最小化由于从上流到下流和管道中的浆料入口的流动的反转而导致的压降的降低; 一个半球形底部头部，其中流体导流器放置在叶轮和底部本身之间，并设计成使由于从下流到上流的流动反转而导致的压降最小化; 以及在引流管内部矫正挡板，其形状和尺寸被优化以将由叶轮的旋转产生的径向速度分量转化为轴向速度分量。

    Pump for Loop Reactor
    7.
    发明申请
    Pump for Loop Reactor 审中-公开
    循环反应器泵

    公开(公告)号：US20150073105A1

    公开(公告)日：2015-03-12

    申请号：US14543369

    申请日：2014-11-17

    Applicant: TOTAL RESEARCH & TECHNOLOGY FELUY

    Inventor： Frank Timmermans ,  Wouter Ooms ,  Daan Dewachter ,  Louis Fouarge

    IPC: B01J19/18 ,  F04D3/00 ,  F04D29/18 ,  C08F110/02

    CPC classification number: B01J19/1875 ,  B01J19/1837 ,  C08F10/02 ,  C08F110/02 ,  F04D3/00 ,  F04D29/181 ,  C08F2/14 ,  C08F2/01 ,  C08F2500/05 ,  C08F2500/24

    Abstract: The present invention relates the use of a pump in a loop reactor for the production of polyethylene, as well as a reactor comprising such pump and methods for producing polyolefin by means of such reactor. The pump according to the invention is characterized in that it is an axial flow impeller circulation pump, wherein the impeller comprises 6 blades and wherein the pump is fixed on a spring supported frame. Use of the pump according to the present invention allows for preparation of homogeneous polyethylene products that meet high quality standards from the complicated ethylene polymerization mixtures while at the same time being produced with low energy consumption.

    Abstract translation: 本发明涉及用于生产聚乙烯的环管反应器中的泵的使用，以及包括这种泵的反应器和通过这种反应器生产聚烯烃的方法。 根据本发明的泵的特征在于它是轴流式叶轮循环泵，其中叶轮包括6个叶片，并且其中泵固定在弹簧支撑的框架上。 根据本发明的泵的使用允许制备符合来自复杂乙烯聚合混合物的高质量标准的均质聚乙烯产品，同时以低能量消耗生产。

    POLYMERIZATION REACTOR FOR BUTYL RUBBER PRODUCTION
    8.
    发明申请
    POLYMERIZATION REACTOR FOR BUTYL RUBBER PRODUCTION 有权
    丁基橡胶生产聚合反应剂

    公开(公告)号：US20140086801A1

    公开(公告)日：2014-03-27

    申请号：US14122039

    申请日：2011-05-26

    Applicant: CONSER SPA

    Inventor： Flavio Simola ,  Aldo Appetiti ,  Andrea Angeletti

    IPC: C08F2/01

    CPC classification number: C08F2/01 ,  B01J19/006 ,  B01J19/1875 ,  B01J2219/00081 ,  B01J2219/00254 ,  C08F210/12 ,  C08F236/08

    Abstract: A low temperature polymerization reactor for the production of butyl rubber by catalytic polymerization of isobutylene with small amount of a conjugated diolefin such as isoprene includes: an extended upper head with fluid deflector fixed to the top tube-sheet, the shapes of the head and deflector being optimized in order to reach a very homogeneous slurry velocity in the rows of tubes and to minimize the pressure drop due to the inversion of flow from up-flow to down-flow and to the entrance of the slurry in the tubes; an hemispheric bottom head with fluid deflectors placed between the impeller and the bottom itself and designed to minimize the pressure drop due to the inversion of flow from down-flow to up-flow; and straightening baffles inside the draft tube, which shape and dimensions are optimized to turn the radial velocity components produced by the rotation of the impeller into axial velocity components.

    Abstract translation: 用于通过异丁烯与少量共轭二烯烃如异戊二烯的催化聚合生产丁基橡胶的低温聚合反应器包括：具有固定在顶部管板上的流体偏转器的延伸的上部头部，头部和偏转器的形状 被优化以便在管排中达到非常均匀的浆料速度并且最小化由于从上流到下流和管道中的浆料入口的流动的反转而导致的压降的降低; 一个半球形底部头部，其中流体导流器放置在叶轮和底部本身之间，并设计成使由于从下流到上流的流动反转而导致的压降最小化; 以及在引流管内部矫正挡板，其形状和尺寸被优化以将由叶轮的旋转产生的径向速度分量转化为轴向速度分量。

    APPARATUS FOR MANUFACTURING POLYMER RESIN, POLYMERIZATION VESSEL, AND METHOD FOR MANUFACTURING POLYMER RESIN
    9.
    发明申请
    APPARATUS FOR MANUFACTURING POLYMER RESIN, POLYMERIZATION VESSEL, AND METHOD FOR MANUFACTURING POLYMER RESIN 有权
    制造聚合物树脂的装置，聚合物容器和制造聚合物树脂的方法

    公开(公告)号：US20110178254A1

    公开(公告)日：2011-07-21

    申请号：US13119946

    申请日：2008-09-18

    Applicant: Kenichirou Matsuba ,  Kazushige Kimura

    Inventor： Kenichirou Matsuba ,  Kazushige Kimura

    IPC: C08F2/01 ,  C08F220/44 ,  B01J19/18

    CPC classification number: B01J4/002 ,  B01F5/10 ,  B01F7/0065 ,  B01F7/18 ,  B01F7/24 ,  B01F15/066 ,  B01F2015/061 ,  B01J19/0013 ,  B01J19/0066 ,  B01J19/1875 ,  B01J2204/002 ,  B01J2219/00081 ,  B01J2219/00083 ,  B01J2219/00094 ,  B01J2219/0011 ,  C08F2/01 ,  C08F212/10

    Abstract: An apparatus for manufacturing a polymer resin comprises a polymerization vessel, a bearing part, a protection part, a circulating cooling means, a raw material-injecting nozzle and a flow path-constituting part. The protection part forms a first flow path between the protection part and the side face of the agitation axis. The circulating cooling means includes a circulating inlet nozzle provided on a side face of the protruding part so as to be opposite to the protection part. The flow path-constituting part is provided between the bearing part and the protection part so as to cover the side face of the agitation axis, to fix the bearing part and the protection part. This flow path-constituting part forms a second flow path between the side face of the agitation axis and the flow path-constituting part and a third flow path for coupling the second flow path with the raw material-injecting nozzle. The first to third flow paths constitute a continuous flow path and an uppermost end of the first flow path is opened to the inside of the protruding part. The gap, part of the first flow path other than the uppermost end, the second flow path and the third flow path are isolated from the inside of the protruding part.

    Abstract translation: 聚合物树脂的制造装置包括聚合容器，轴承部，保护部，循环冷却机构，原料喷射喷嘴和流路构成部。 保护部分在保护部分和搅拌轴的侧面之间形成第一流动路径。 循环冷却装置包括设置在突出部分的侧面上以与保护部件相对的循环入口喷嘴。 流路构成部设置在轴承部和保护部之间，以覆盖搅拌轴的侧面，以固定轴承部和保护部。 该流动路径构成部分在搅拌轴的侧面和流路构成部分之间形成第二流路，以及用于将第二流路与原料喷射喷嘴连接的第三流路。 第一至第三流路构成连续流路，第一流路的最上端向突出部的内部开口。 所述间隙，除了最上端以外的第一流路的一部分，第二流路和第三流路与突出部的内部隔离。

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