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    Solvent Control for Centrifugation of Steam Cracked Tar
    32.
    发明申请
    Solvent Control for Centrifugation of Steam Cracked Tar 有权

    公开(公告)号：US20220033716A1

    公开(公告)日：2022-02-03

    申请号：US17298963

    申请日：2019-12-11

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： John S. Coleman ,  Kapil Kandel ,  Michael J. Clemmons ,  Teng Xu

    IPC: C10G31/10 ,  C10G9/36 ,  C10G21/14 ,  C10G69/06

    Abstract: Processes for preparing a low particulate liquid hydrocarbon product are provided and includes blending a tar stream containing particles with a fluid to produce a fluid-feed mixture containing tar, the particles, and the fluid, where the fluid-feed mixture contains about 30 wt % or greater of the fluid based on a combined weight of the tar stream and the fluid. The method also includes separating, e.g., by centrifuging, from the fluid-feed mixture a higher density portion and a lower density portion, where the lower density portion contains no more than 25 wt % of the particles in the fluid-feed mixture, based on the weight of the particles in the fluid-feed mixture.

    Self-sulfiding of guard reactor catalyst for solvent assisted tar conversion processes
    33.
    发明授权
    Self-sulfiding of guard reactor catalyst for solvent assisted tar conversion processes 有权

    公开(公告)号：US11236276B2

    公开(公告)日：2022-02-01

    申请号：US16544551

    申请日：2019-08-19

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Krystle J. Emanuele ,  Glenn A. Heeter ,  Kapil Kandel ,  Teng Xu

    IPC: C10G69/06 ,  B01J23/755 ,  B01J23/28 ,  B01J37/20 ,  C10G67/14 ,  C10G67/02

    Abstract: The present disclosure provides methods for hydroprocessing of heavy oils, such as pyrolysis tars. For example, a process for preparing a liquid hydrocarbon product includes providing a first process stream comprising a reduced reactivity tar, and blending the first process stream with a utility fluid to produce a second process stream comprising solids and a reduced reactivity, lower viscosity tar. The method can includes introducing the second process stream into a guard reactor without sulfiding the guard reactor catalyst(s) prior to introducing the second process stream into the guard reactor. The method includes hydroprocessing the second process stream in the guard reactor under mild hydroprocessing conditions to produce a third process stream. The method includes hydroprocessing the third process stream to produce a fourth process stream having a bromine number (BN) lower than 12 and comprising the liquid hydrocarbon product and the utility fluid.

    Upgrading hydrocarbon pyrolysis products
    35.
    发明授权
    Upgrading hydrocarbon pyrolysis products 有权

    公开(公告)号：US10344222B2

    公开(公告)日：2019-07-09

    申请号：US15971590

    申请日：2018-05-04

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Gaurav Agrawal ,  Stephen T. Cohn ,  Kapil Kandel ,  Subramanya V. Nayak ,  Teng Xu

    IPC: C10G9/36 ,  C10G47/04 ,  C10G45/38 ,  C10G47/00 ,  C10G65/04 ,  C10G65/12

    Abstract: A hydrocarbon conversion process comprises providing a hydrocarbon feedstock comprising an effluent fraction from a pyrolysis process, wherein the effluent fraction has an initial boiling point at atmospheric pressure of at least 177° C. and a final boiling point at atmospheric pressure of no more than 343° C. and comprises at least 0.5 wt. % of olefinic hydrogen atoms based on the total weight of hydrogen atoms in the effluent fraction. The hydrocarbon feedstock is hydroprocessed in at least one hydroprocessing zone in the presence of treatment gas comprising molecular hydrogen under catalytic hydroprocessing conditions to produce a hydroprocessed product comprising less than 0.5 wt. % of olefinic hydrogen atoms based on the total weight of hydrogen atoms in the hydroprocessed product. The hydroprocessing conditions comprise a temperature from 150 to 350° C. and a pressure from 500 to 1500 psig (3550 to 10445 kPa-a).

    Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate
    39.
    发明申请
    Aerobic Oxidative Esterification of Sugar-Derived 1,4-Disubstituted Benzene for Direct Synthesis of Dimethylterephthalate 审中-公开
    糖衍生的1,4-二取代苯的有氧氧化酯化用于直接合成对苯二甲酸二甲酯

    公开(公告)号：US20160115113A1

    公开(公告)日：2016-04-28

    申请号：US14877545

    申请日：2015-10-07

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Mika Shiramizu ,  James R. Lattner ,  Kapil Kandel

    IPC: C07C67/03 ,  C07C37/52

    CPC classification number: C07C29/46 ,  C07C45/69 ,  C07C67/39 ,  C07C67/40 ,  C07C69/82 ,  C07C47/56 ,  C07C33/26

    Abstract: This invention relates to a dimethylterephthalate production process comprising reacting substituted furan with ethylene under cycloaddition reaction conditions and in the presence of a cycloaddition catalyst to produce a bicyclic ether, dehydrating the bicyclic ether to produce a substituted phenyl, dissolving said substituted phenyl in methanol, and oxidizing and esterifying the substituted phenyl in the presence of an oxidative esterification catalyst to form dimethylterephthalate. Importantly, the process does not include oxidizing the substituted phenyl to form terephthalic acid.

    Abstract translation: 本发明涉及对苯二甲酸二甲酯生产方法，其包括在环加成反应条件下和在环加成催化剂存在下使取代的呋喃与乙烯反应以产生双环醚，使双环醚脱水以产生取代的苯基，将所述取代的苯基溶解在甲醇中， 在氧化酯化催化剂的存在下氧化和酯化取代的苯基以形成对苯二甲酸二甲酯。 重要的是，该方法不包括氧化取代的苯基以形成对苯二甲酸。

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