METHOD FOR TREATING USED PLASTICS BY DISSOLVING THE POLYMERS AND PURIFYING THEM BY WASHING

    公开(公告)号:US20240042650A1

    公开(公告)日:2024-02-08

    申请号:US18266646

    申请日:2021-12-02

    Abstract: The present invention relates to a process for treating a plastic feedstock comprising polymers, comprising:



    a) a dissolution step involving placing the plastic feedstock in contact with a dissolution solvent, at a dissolution temperature of between 100° C. and 300° C. and a dissolution pressure of between 1 and 20.0 MPa abs, to dissolve at least a portion of the polymers of the plastic feedstock and to obtain a crude polymer solution;
    b) a step of washing by placing the crude polymer solution in contact with a dense solution, at a temperature of between 100° C. and 300° C., a pressure of between 1 and 20.0 MPa abs and at a mass ratio between the dense solution and the crude polymer solution of between 0.05 and 20.0, to obtain a washed polymer solution and a washing effluent; and then
    c) a step of recovering the polymers, to obtain a solvent fraction and a purified polymer fraction. FIG. 1 to be published

    MIXING AND DISTRIBUTION DEVICE COMPRISING A DISTRIBUTION PLATE WITH PERIPHERAL OPENINGS
    5.
    发明申请
    MIXING AND DISTRIBUTION DEVICE COMPRISING A DISTRIBUTION PLATE WITH PERIPHERAL OPENINGS 有权
    包含具有外围开口的分布板的混合和分配装置

    公开(公告)号:US20160288072A1

    公开(公告)日:2016-10-06

    申请号:US15084669

    申请日:2016-03-30

    Abstract: Device for the mixing and distribution of fluids for a catalytic reactor with a downward flow, said device comprising a collection zone (A), a mixing zone (B) and a distribution zone (C) comprising a distribution plate (12) comprising at least one first zone (C1) supporting a plurality of chimneys (13) and a second zone (C2); said mixing zone (B) is comprised in an annular enclosure (15) situated in the distribution zone (C), said mixing (B) and distribution (C) zones being delimited by at least one annular wall (16) comprising at least one lateral passage section (17a, 17b) suitable for the passage of the fluids from said mixing zone (B) to the first zone (C1) of said distribution zone (C), and the second zone (C2) comprises a plurality of openings (18) suitable for the partial passage of the fluids out of the distribution zone (C).

    Abstract translation: 用于混合和分配具有向下流动的催化反应器的流体的装置,所述装置包括收集区(A),混合区(B)和分布区(C),分布区(C)包括至少包括分布板 支撑多个烟囱(13)和第二区域(C2)的一个第一区域(C1); 所述混合区(B)包括在位于所述分配区(C)中的环形外壳(15)中,所述混合(B)和分布(C)区域由至少一个环形壁(16)界定,所述环形壁包括至少一个 适于使流体从所述混合区(B)通到所述分配区(C)的第一区(C1)的侧通道部分(17a,17b),并且所述第二区(C2)包括多个开口 18)适于使流体部分地流出分布区域(C)。

    MIXING AND DISTRIBUTION DEVICE WITH MIXING AND EXCHANGE ZONES
    10.
    发明申请
    MIXING AND DISTRIBUTION DEVICE WITH MIXING AND EXCHANGE ZONES 有权
    具有混合和交换区的混合和分配装置

    公开(公告)号:US20160288073A1

    公开(公告)日:2016-10-06

    申请号:US15085466

    申请日:2016-03-30

    Abstract: Device for the mixing and distribution of fluids for a catalytic reactor with a downward flow, said device comprising at least one collection zone (A), at least one mixing zone (B) comprising at least one enclosure (15) for the mixing of the fluids, at least one distribution zone (C), characterized in that said mixing zone (B) is situated at the same level as the distribution zone (C) and also comprises at least one enclosure (16) for the exchange of the fluids, connected to, and communicating with, said mixing enclosure (15), said exchange enclosure (16) comprising at least one lateral passage section (17a, 17b) suitable for the passage of the fluids from said exchange enclosure (16) to said distribution zone (C).

    Abstract translation: 用于混合和分配用于具有向下流动的催化反应器的流体的装置,所述装置包括至少一个收集区(A),至少一个混合区(B),其包含至少一个用于混合 流体,至少一个分配区域(C),其特征在于,所述混合区域(B)位于与分配区域(C)相同的高度,并且还包括用于更换流体的至少一个外壳(16) 连接到所述混合外壳(15)并且与所述混合外壳(15)连通,所述交换外壳(16)包括至少一个侧向通道部分(17a,17b),所述至少一个侧向通道部分适于使流体从所述交换外壳(16) (C)。

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