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    Method for producing diesters of terephthalic acid with circulation of the reaction mixture
    2.
    发明授权
    Method for producing diesters of terephthalic acid with circulation of the reaction mixture 有权

    公开(公告)号：US10239818B2

    公开(公告)日：2019-03-26

    申请号：US15513716

    申请日：2015-09-21

    Applicant: BASF SE

    Inventor： Armin Schraut ,  Martin Kaller ,  Rob Bronneberg ,  Jasmin Stammer ,  Martin Das ,  Gerrit Harnischmacher

    IPC: C07C67/08 ,  C07C67/54

    Abstract: The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst, a reaction suspension is drawn off from a region between the upper region and the lower region of the reactor, a first stream of the reaction suspension is recycled into the upper region of the reactor and a second stream of the reaction suspension is introduced into the lower region of the reactor, and the reaction suspension is thus mixed, wherein the stream drawn off and/or the first stream is passed through a heat exchanger outside the reactor and heated; and water of reaction is distilled off together with the vapor as alcohol-water azeotrope, the vapor is at least partly condensed, the condensate is separated into an aqueous phase and an organic phase and the organic phase is at least partly recycled into the reaction system.

    HEAT EXCHANGER, REACTOR ARRANGEMENT COMPRISING THIS HEAT EXCHANGER AND METHOD FOR CONTROLLING THE TEMPERATURE OF A REACTOR
    3.
    发明申请
    HEAT EXCHANGER, REACTOR ARRANGEMENT COMPRISING THIS HEAT EXCHANGER AND METHOD FOR CONTROLLING THE TEMPERATURE OF A REACTOR 有权
    热交换器，包括该热交换器的反应器装置和控制反应器温度的方法

    公开(公告)号：US20150267967A1

    公开(公告)日：2015-09-24

    申请号：US14661408

    申请日：2015-03-18

    Applicant: BASF SE

    Inventor： Ulrich HAMMON ,  Thomas Walter ,  Armin Schraut

    IPC: F28D7/16

    CPC classification number: F28D7/16 ,  B01J8/067 ,  B01J2208/00221 ,  B01J2208/00256 ,  F28D2021/0022 ,  F28D2021/0064 ,  F28F27/00 ,  F28F2265/12

    Abstract: The present invention relates to a heat exchanger (1) comprising a bundle of at least two heat exchanger tubes (3), a heat exchanger housing (5) surrounding the bundle of heat exchanger tubes (3), wherein a liquid heat-transfer medium (7) is passed around the bundle of heat exchanger tubes (3) in the heat exchanger housing (5), a heat exchanger cap (9) sealing the top of the heat exchanger housing (5), a heat exchanger bottom (11) sealing the bottom of the heat exchanger housing (5), a feed point (13) for the heat-transfer medium (7), an outlet (15) for the heat-transfer medium (7), an emergency relief port (17) disposed in proximity to the heat exchanger cap (9). The heat exchanger (1) comprises a safety device (19) disposed in proximity to the heat exchanger bottom (11).The present invention further relates to a reactor arrangement (101).

    Abstract translation: 本发明涉及一种热交换器（1），其包括至少两个热交换器管（3）的束，围绕热交换器管束（3）的热交换器壳体（5），其中液体传热介质 （7）绕过热交换器壳体（5）中的热交换器管束（3），密封热交换器壳体（5）的顶部的热交换器盖（9），热交换器底部（11） 密封热交换器壳体（5）的底部，用于传热介质（7）的供给点（13），用于传热介质（7）的出口（15），紧急排泄口（17） 设置在热交换器盖（9）附近。 热交换器（1）包括设置在热交换器底部（11）附近的安全装置（19）。 本发明还涉及一种反应器装置（101）。

    Method for producing diesters of terephthalic acid with enrichment of recirculated alcohol
    4.
    发明授权
    Method for producing diesters of terephthalic acid with enrichment of recirculated alcohol 有权

    公开(公告)号：US10266477B2

    公开(公告)日：2019-04-23

    申请号：US15513775

    申请日：2015-09-21

    Applicant: BASF SE

    Inventor： Armin Schraut ,  Martin Kaller ,  Rob Bronneberg ,  Jasmin Stammer ,  Martin Das ,  Gerrit Harnischmacher

    IPC: C07C67/08 ,  B01D3/36 ,  B01J19/00 ,  C07C67/58

    Abstract: The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst, and water of reaction is distilled off together with the vapor as alcohol-water azeotrope, the vapor is at least partly condensed, the condensate is separated into an aqueous phase and an organic phase and the organic phase is conducted through a column in which the organic phase is run counter to at least a portion of the vapor, and the organic phase is collected in the lower region of the column and at least partly passed into the dispersing tank.

    Method for producing diesters of terephthalic acid
    6.
    发明授权
    Method for producing diesters of terephthalic acid 有权

    公开(公告)号：US09988338B2

    公开(公告)日：2018-06-05

    申请号：US15513730

    申请日：2015-09-21

    Applicant: BASF SE

    Inventor： Armin Schraut ,  Martin Kaller ,  Rob Bronneberg ,  Jasmin Stammer ,  Martin Das ,  Gerrit Harnischmacher

    IPC: C07C67/08

    CPC classification number: C07C67/08 ,  C07C69/82

    Abstract: The present invention relates to a process for preparing a terephthalic diester by reacting terephthalic acid with at least one alcohol, wherein terephthalic acid is suspended in the alcohol in a dispersing tank, the preliminary suspension is passed from the dispersing tank into a reactor and converted in the presence of an esterification catalyst to obtain a reaction suspension, a stream of the reaction suspension is drawn off from the reactor, passed through a heat exchanger outside the reactor and heated and the heated reaction suspension is recycled into the reactor, and water of reaction is distilled off together with the vapor as alcohol-water azeotrope, the vapor is at least partly condensed, the condensate is separated into an aqueous phase and an organic phase and the organic phase is at least partly recycled into the reactor.

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