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    Devolatilizer design
    1.
    发明授权
    Devolatilizer design 有权

    公开(公告)号：US12098233B2

    公开(公告)日：2024-09-24

    申请号：US17059776

    申请日：2019-05-31

    Applicant: Dow Global Technologies LLC

    Inventor： Maria Pollard ,  Irfan Khan ,  Shrikant Dhodapkar ,  Martin Lopez ,  Quan Yuan

    IPC: C08F6/10 ,  B01D1/22 ,  B01D3/06

    CPC classification number: C08F6/10 ,  B01D1/221 ,  B01D3/06

    Abstract: A devolatilizer (devo), which operates at a temperature (T) and at a pressure (P), for the separation of at least a portion of a solvent from a polymer-rich solution comprising the solvent and a polymer, and wherein the devolatilizer comprises at least the following components:



    A) a distributor, a heater, or a heater/distributor combination;
    B) a shroud (component B) located around some or all of the periphery of component A; and
    C) a gap (component C) located between the outer surface of component A and the inner surface of component B.

    DEVOLATILIZER DESIGN
    4.
    发明申请
    DEVOLATILIZER DESIGN 有权

    公开(公告)号：US20210246235A1

    公开(公告)日：2021-08-12

    申请号：US17059776

    申请日：2019-05-31

    Applicant: Dow Global Technologies LLC

    Inventor： Maria Pollard ,  Irfan Khan ,  Shrikant Dhodapkar ,  Martin Lopez ,  Quan Yuan

    IPC: C08F6/10 ,  B01D1/22 ,  B01D3/06

    Abstract: A devolatilizer (devo), which operates at a temperature (T) and at a pressure (P), for the separation of at least a portion of a solvent from a polymer-rich solution comprising the solvent and a polymer, and wherein the devolatilizer comprises at least the following components: A) a distributor, a heater, or a heater/distributor combination; B) a shroud (component B) located around some or all of the periphery of component A; and C) a gap (component C) located between the outer surface of component A and the inner surface of component B.

    GAS DIFFUSER
    5.
    发明申请
    GAS DIFFUSER 有权
    气体扩散器

    公开(公告)号：US20140191424A1

    公开(公告)日：2014-07-10

    申请号：US13937241

    申请日：2013-07-09

    Applicant: Dow Global Technologies LLC

    Inventor： Qixiang Cai ,  Ning Chai ,  Steven J. Gluck ,  Billy G. Smith ,  Chengfeng Wang ,  Quan Yuan

    IPC: B01F3/04

    CPC classification number: B01F3/04248 ,  B01F2003/04319

    Abstract: A gas diffuser comprises a grid of aeration pipes spaced apart and in parallel alignment with each other within a common horizontal plane and a manifold in fluid communication with the aeration pipes. A given aeration pipe (12) includes: a length (L) extending between two ends and defining an axis (Z), a hydrodynamic diameter (Dh),an elliptical cross-sectional area defining a vertical plane comprising a vertical (Y) and horizontal (X) axis intersecting through a center (C) which are perpendicular to axis (Z), an outer circumference defined by a first arc (20) comprising 30° located below the (X) axis and bisected by the (Y) axis, and a second arc (22) comprising 330° which is non-overlapping with the first arc (20. A plurality (N) of discharge holes are spaced along the length (L) at four or more distinct positions about the second arc within the sectors and a plurality (M) of drainage holes (34) spaced along the length (L) within the first arc;The second arc (22) includes four non-overlapping 15° sectors, each comprising i) at least 10 discharge holes having a minimum hydraulic diameter (dmin) of equal to or greater than 0.001 m, ii) a value (y) equal to the average position along the Y axis of all discharge holes within the sector measured in meters, and iii) a value (F) equal to the mean value of the hydraulic diameter (d) to the forth power for all discharge holes within the sector measured in meters; wherein the following relationship applies for any two the four sectors: Abs[1−Fi/Fii+2.6×108m−5N2(yii−yi)Fi)]≦0.5 wherein “i” and “ii” refer to higher and lower sectors along the Y axis, respectively.

    Abstract translation: 气体扩散器包括间隔开并且在公共水平面内彼此平行对准的曝气管网格和与曝气管道流体连通的歧管。 给定的曝气管（12）包括：在两个端部之间延伸并且限定轴线（Z），流体动力直径（Dh），限定垂直平面（Y）的垂直平面的椭圆形横截面区域的长度（L）和 水平（X）轴与垂直于轴线（Z）的中心（C）交叉，外周由第一弧线（20）限定，第一弧线（20）包括位于（X）轴下方并由（Y）轴 ，和包括330°的第二弧（22），其与第一弧（20）不重叠。多个（N）个排出孔沿着长度（L）在围绕第二弧的四个或更多个不同位置处间隔开 所述扇区和沿所述长度（L）在所述第一弧内间隔开的多个（M）排水孔（34）;所述第二弧（22）包括四个不重叠的15°扇区，每个包括i）至少10个排出孔 具有等于​​或大于0.001m的最小水力直径（dmin），ii）等于平均位置al的值（y） 在以扇区为单位测量的扇区内的所有排放孔的Y轴上，以及iii）等于以米为单位的扇区内所有排放孔的第四功率的水力直径（d）的平均值的值（F）; 其中以下关系适用于四个扇区中的任何两个：Abs [1-Fi / Fii + 2.6×108m-5N2（yii-yi）Fi）]＆nlE; 0.5其中“i”和“ii” 分别沿着Y轴。

    METHODS OF OPERATING GAS DISTRIBUTORS
    7.
    发明申请
    METHODS OF OPERATING GAS DISTRIBUTORS 有权

    公开(公告)号：US20250153130A1

    公开(公告)日：2025-05-15

    申请号：US18862013

    申请日：2023-05-05

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Liwei Li ,  Yu Liu ,  Quan Yuan ,  Rami H. Sabbah ,  Yuan Yao ,  Chi-Wei Tsang

    IPC: B01J8/18

    Abstract: According to embodiments disclosed herein, a method of operating gas distributers may include passing a solid particulate to a processing unit, where the processing unit includes at least a first distributor and a second distributor, wherein the first distributor and second distributor is operable to pass a combustible gas and a decoking gas into the processing unit, passing the combustible gas into the processing unit through the first distributor, wherein the combustible gas is contacted with the solid particulate and coke forms on the first distributor, halting the passing of the combustible gas through the first distributor while the combustible gas is passed through the second distributor, passing the decoking gas through the first distributor while the combustible gas is passed through the second distributor, wherein the decoking gas removes coke formed on the first distributor, and resuming the passing of the combustible gas through the first distributor.

    CHEMICAL FEED DISTRIBUTORS AND METHODS OF USING THE SAME
    9.
    发明公开
    CHEMICAL FEED DISTRIBUTORS AND METHODS OF USING THE SAME 审中-公开

    公开(公告)号：US20230364575A1

    公开(公告)日：2023-11-16

    申请号：US18246949

    申请日：2021-09-30

    Applicant: Dow Global Technologies LLC

    Inventor： Matthew T. Pretz ,  Quan Yuan ,  Pritish M. Kamat ,  Liwei Li ,  Lin Luo

    IPC: B01J8/18 ,  B01J8/00 ,  B01J8/44

    CPC classification number: B01J8/1827 ,  B01J8/0085 ,  B01J8/44 ,  B01J2208/00902 ,  B01J2208/00911

    Abstract: According to one or more embodiments, a chemical feed distributor may include a chemical feed inlet, a body, a plurality of primary chemical feed outlets, and a secondary chemical feed outlet. The chemical feed inlet may pass a chemical feed stream into the chemical feed distributor. One or more walls of the body may define an elongated chemical feed stream flow path. The plurality of primary chemical feed outlets may be spaced along at least a portion of the length of the elongated chemical feed stream flow path and may be operable to pass a first portion of the chemical feed stream out of the feed distributor and into a vessel. The secondary chemical feed outlet may be downstream of the plurality of primary chemical feed outlets and may be operable to pass a second portion of the chemical feed stream out of the chemical feed distributor.

    Gas diffuser
    10.
    发明授权
    Gas diffuser 有权
    气体扩散器

    公开(公告)号：US08894048B2

    公开(公告)日：2014-11-25

    申请号：US13937241

    申请日：2013-07-09

    Applicant: Dow Global Technologies LLC

    Inventor： Qixiang Cai ,  Ning Chai ,  Steven J. Gluck ,  Billy G. Smith ,  Chengfeng Wang ,  Quan Yuan

    IPC: B01F3/04

    CPC classification number: B01F3/04248 ,  B01F2003/04319

    Abstract: A gas diffuser including a grid of aeration pipes spaced apart and in parallel alignment within a horizontal plane is provided. The aeration pipes have improved discharge hole placement along their lengths and around their circumferences to provide improved performance and reduced fouling of membrane filtration systems associated therewith.

    Abstract translation: 提供一种气体扩散器，其包括在水平面内间隔开并平行排列的曝气管网格。 曝气管具有沿其长度和围绕它们的周长改善的排放孔布置，以提供与其相关联的膜过滤系统的改进的性能和减少的结垢。

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