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    PROCESS FOR PREPARING ISOCYANATES BY PHOSGENATION OF AMINES IN THE LIQUID PHASE
    4.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES BY PHOSGENATION OF AMINES IN THE LIQUID PHASE 有权
    通过在液相中相互作用的氨基酸来制备异氰酸酯的方法

    公开(公告)号：US20140114087A1

    公开(公告)日：2014-04-24

    申请号：US14058765

    申请日：2013-10-21

    Applicant: BASF SE

    Inventor： Torsten MATTKE ,  Markus Hiller ,  Hans-Juergen Pallasch

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: The present invention relates to a process for preparing isocyanates by reacting amines with phosgene in the liquid phase, where phosgene, hydrogen chloride and isocyanates are separated with stripping columns operated at different pressures.

    Abstract translation: 本发明涉及通过胺与光气反应制备异氰酸酯的方法，其中光气，氯化氢和异氰酸酯与在不同压力下操作的汽提塔分离。

    DISTILLATION PROCESS WITH A LAVAL NOZZLE
    6.
    发明公开
    DISTILLATION PROCESS WITH A LAVAL NOZZLE 审中-公开

    公开(公告)号：US20240226770A1

    公开(公告)日：2024-07-11

    申请号：US18561836

    申请日：2022-05-16

    Applicant: BASF SE

    Inventor： Bernd METZEN ,  Torsten MATTKE

    IPC: B01D5/00 ,  B01D3/14

    CPC classification number: B01D5/0063 ,  B01D3/14

    Abstract: The invention relates to a process for at least partially separating a light boiling component from a mixture containing said light boiling component and at least a heavy boiling component, the process comprising the steps of (a) feeding the mixture into a distillation column and withdrawing a distillate stream enriched in the light boiling component from the top section of the distillation column and withdrawing a bottom stream enriched in the heavy boiling component from the bottom section of the distillation column: and (b) transferring at least part of the distillate stream as a condensation stream to a condensation device wherein the condensation stream is at least partially condensed and recycled to the top section of the distillation column, wherein the condensation device comprises a pump and a de Laval nozzle having a throat, a converging zone before the throat and a diverging zone after the throat, the condensation stream being passed into the converging zone of the de Laval nozzle, the condensation stream being accelerated to sonic speed while passing the throat, the condensation stream being expanded in the diverging zone to supersonic speed, thereby at least part of the condensation stream being condensed to form a liquid recycle stream, and the recycle stream being recycled through the pump to the top section of the distillation column.

    PROCESS FOR PRODUCING ISOCYANATES
    7.
    发明公开
    PROCESS FOR PRODUCING ISOCYANATES 审中-公开

    公开(公告)号：US20230312462A1

    公开(公告)日：2023-10-05

    申请号：US18023747

    申请日：2021-08-23

    Applicant: BASF SE

    Inventor： Jan Pablo JOSCH ,  Matthias HINRICHS ,  Jens FERBITZ ,  Kai THIELE ,  Torsten MATTKE ,  Stefan MAIXNER

    IPC: C07C263/10

    CPC classification number: C07C263/10

    Abstract: The invention relates to a process for producing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, comprising: (a) mixing an amine comprising feed stream, a phosgene comprising feed stream and optionally an inert solvent; (b) reacting the amine with phosgene in a first reaction section to obtain an intermediate reaction mixture comprising isocyanate, carbamoyl chlorides, amine hydrochlorides and unreacted phosgene; (c) cleaving the carbamoyl chlorides and remove phosgene from the intermediate reaction mixture in a second reaction section to obtain an isocyanate comprising crude product, (d) optionally working-up the crude product; wherein reacting (b) is carried out such that the intermediate reaction mixture comprises 1.7 to 5 mol-% solid amine hydrochlorides based on the molar amount of amine fed into the process.

    PROCESS AND REACTOR FOR PRODUCING PHOSGENE
    8.
    发明申请
    PROCESS AND REACTOR FOR PRODUCING PHOSGENE 有权

    公开(公告)号：US20230074789A1

    公开(公告)日：2023-03-09

    申请号：US17797736

    申请日：2021-01-26

    Applicant: BASF SE

    Inventor： Torsten MATTKE ,  Gerhard OLBERT ,  Jens FERBITZ ,  Koenraad VANDEWALLE ,  Kai THIELE ,  Peter VAN DEN ABEEL ,  Jim BRANDTS

    IPC: C01B32/80 ,  B01J7/00 ,  B01J12/00 ,  B01J8/00 ,  B01J8/06

    Abstract: The invention relates to a process for producing phosgene by gas phase reaction of carbon monoxide and chlorine in the presence of a catalyst in a reactor that comprises a plurality of contact tubes arranged parallel to one another, which contact tubes are filled with the catalyst and around which at least one fluid heat transfer medium flows, a feed stream of a mixture of a chlorine input stream and a carbon monoxide input stream being conducted into the contact tubes and reacted to form a phosgene-containing product gas mixture, characterised in that the product gas mixture is discharged from the contact tubes at an outlet end of the contact tubes. The method according to the invention is characterised in that the gas phase reaction is carried out in the reactor such that the position of the highest temperature in a contact tube (hot spot) moves along the longitudinal axis of the contact tube at a predetermined rate of migration, the hot spot having a rate of migration in the longitudinal direction of the contact tubes which is in the range of 1 to 50 mm per day. The invention also relates to a reactor for carrying out the process.

    PROCESS FOR PREPARING ISOCYANATES
    9.
    发明申请
    PROCESS FOR PREPARING ISOCYANATES 审中-公开
    制备异氰酸酯的方法

    公开(公告)号：US20150080600A1

    公开(公告)日：2015-03-19

    申请号：US14546587

    申请日：2014-11-18

    Applicant: BASF SE

    Inventor： Vanessa Simone LEHR ,  Torsten MATTKE ,  Carsten KNOESCHE ,  Heiner SCHELLING ,  Gerhard OLBERT

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  C01B7/04 ,  Y02P20/22 ,  C07C265/00

    Abstract: The present invention relates to gas phase phosgenation of amines for preparation of isocyanates. In the present invention, phosgene is prepared by reacting chlorine with an excess of carbon monoxide in a gas phase. The obtained phosgene-containing reaction mixture is divided into two streams by a thermal and/or a membrane separating process. The first stream is a low-carbon monoxide stream of no more than 1% by weight of carbon monoxide, based on a total weight of the first stream. The second stream is a carbon monoxide-rich stream of more than 10% by weight of carbon monoxide, based on a total weight of the second stream. The first stream is used as the phosgene-containing reactant stream in the gas phase phosgenation of amines to prepare isocyanates. The second stream can be recycled into the phosgene synthesis.

    Abstract translation: 本发明涉及用于制备异氰酸酯的胺的气相光气化。 在本发明中，气相中的氯与过量的一氧化碳反应制备光气。 得到的含有光气的反应混合物通过热和/或膜分离方法分成两股。 基于第一料流的总重量，第一料流是不超过1重量％的一氧化碳的低碳一氧化碳流。 基于第二料流的总重量，第二料流是大于10重量％的一氧化碳的一氧化碳浓缩物流。 在胺的气相光气化中，将第一流用作含有光气的反应物流，以制备异氰酸酯。 第二流可以再循环进入光气合成。

    METHOD FOR PRODUCING PHOSGENE
    10.
    发明公开
    METHOD FOR PRODUCING PHOSGENE 审中-公开

    公开(公告)号：US20240269634A1

    公开(公告)日：2024-08-15

    申请号：US18562358

    申请日：2022-05-24

    Applicant: BASF SE

    Inventor： Gerhard OLBERT ,  Torsten MATTKE

    IPC: B01J8/06 ,  B01J19/00 ,  C01B32/80

    CPC classification number: B01J8/067 ,  B01J8/065 ,  B01J19/006 ,  C01B32/80 ,  B01J2208/00044 ,  B01J2208/00176 ,  B01J2208/00221 ,  B01J2208/00849

    Abstract: The invention relates to a process for producing phosgene by gas phase reaction of carbon monoxide and chlorine in the presence of a solid-state catalyst in a shell-and-tube reactor (1) comprising catalyst tubes (3) which are surrounded by a reactor shell (23) and which accommodate the solid-state catalyst and around which a temperature control medium flows, and baffle plates (27) arranged at right angles to the catalyst tubes (3) in order to generate crossflow of the temperature control medium with respect to the catalyst tubes (3), comprising the following steps:



    (a) feeding a gas mixture comprising carbon monoxide and chlorine into the shell-and-tube reactor (1), such that the reaction mixture enters the catalyst tubes (3) at one end;
    (b) reacting the carbon monoxide with chlorine to give phosgene in the catalyst tubes (3) to give a phosgene-containing product stream;
    (c) withdrawing the phosgene-containing product stream from the shell-and-tube reactor (1),
    wherein the amount of liquid temperature control medium in the shell-and-tube reactor (1) is sufficiently large that the temperature of the temperature control medium in the event of failure of the temperature control medium flow reaches the normal boiling point of the temperature control medium no earlier than after 90 s.

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