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    IMPROVEMENTS TO EQUIPMENT OF UREA PLANTS
    5.
    发明公开
    IMPROVEMENTS TO EQUIPMENT OF UREA PLANTS 审中-公开

    公开(公告)号：EP4082643A1

    公开(公告)日：2022-11-02

    申请号：EP21170937.3

    申请日：2021-04-28

    Applicant: CASALE SA

    Inventor： BERETTI, Andrea ,  VERNIER, Maddalena ,  LANZANI, Riccardo ,  BERTINI, Paolo

    IPC: B01D1/30 ,  B01D3/34 ,  C07C273/04 ,  C07C273/16

    Abstract: A urea stripper or evaporator provided with fittings in the bottom liquid holder to reduce gas carryover wherein said fittings may include one or more of: perforated screens horizontally arranged or vertically in the bottom liquid holder; a sealed chamber arranged in the liquid holder to reduce the liquid collection volume in the liquid holder: a plurality of blades and/or vertical plates projecting from the inner surface of a bottom domed end of the apparatus to reduce speed of the liquid flow.

    UREA GRANULATION PROCESS
    6.
    发明公开
    UREA GRANULATION PROCESS 审中-公开

    公开(公告)号：EP3594194A1

    公开(公告)日：2020-01-15

    申请号：EP18183134.8

    申请日：2018-07-12

    Applicant: CASALE SA

    Inventor： MARRONE, Leonardo ,  BERETTI, Andrea

    IPC: C05C9/00 ,  C05G3/00 ,  B01J2/02 ,  B01J2/04

    Abstract: A process of granulation of a urea-containing liquid, comprising: adding a first additive containing carboxymethyl starch to one or more first stage(s) of the granulation process, to form a carcarboxymethyl starch containing inner layer of urea granules, and adding a second additive containing calcium lignosulfonate to one or more second stage(s) of the granulation process, downstream said first stages, to form granules with a coating containing calcium lignosulfonate.

    AMMONIA MIXING SYSTEM AND USE THEREOF
    8.
    发明公开
    AMMONIA MIXING SYSTEM AND USE THEREOF 审中-公开

    公开(公告)号：EP4101522A1

    公开(公告)日：2022-12-14

    申请号：EP21178937.5

    申请日：2021-06-11

    Applicant: CASALE SA

    Inventor： BERETTI, Andrea ,  CEREA, Iacopo

    IPC: B01F3/04 ,  B01F5/04

    Abstract: Is described a mixing system (1) configured to inject an ammonia stream (50) into a main airstream (2). The mixing system (1) comprises an injection unit 10, a static mixing unit and distribution channel (4). The injection unit (10) comprises a manifold (5) and a plurality of injection tubes (11). The manifold (5) is arranged inside the distribution channel (4) and is disposed perpendicularly to the main longitudinal axis of said distribution channel, said manifold is adapted to receive said fluid or gas (50) to be injected into the mainstream (2) via the injection tubes (11); the injection tubes (11) extend perpendicularly from said manifold (5) and are disposed lengthwise forming at least one row along the length of said manifold (5); the injection tubes (11) are parallel to each other and are arranged so that for each row of tubes, each pair of consecutive tubes is made of two tubes of different length; each injection tube (11) is provided with an aperture (6) configured to eject said fluid or gas (50) with a flow direction perpendicular to the main longitudinal axis of the distribution channel (4).

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