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    Process for the preparation of high purity cyclohexane
    1.
    发明授权
    Process for the preparation of high purity cyclohexane 失效
    制备高纯度环己烷的方法

    公开(公告)号：US3586728A

    公开(公告)日：1971-06-22

    申请号：US3586728D

    申请日：1969-06-11

    Applicant: TORAY INDUSTRIES

    Inventor： OTANI SEIYA ,  IWAMURA TAKAO ,  YAMAZAKI TORU ,  NOGUCHI YOSHIO ,  AKATSUKA TAKEAKI

    IPC: C07C5/10

    CPC classification number: C07C5/10 ,  C07C2601/14 ,  C07C13/18

    Abstract: TEMERPATURE IN THE INITIAL CATALYST REACTION LAYER IS 165-220*C.

    HIGH PURITY CYCLOHEXANE IS PRODUCED BY HYDROGENATION OF BENZENE IN A PLURALITY OF SERIES-CONNECTED CATALYTIC REACTORS WHEREIN BENZENE, PREFERABLY FREE OF IMPURITIES, IS FED TO THE FIRST REACTOR, HYDROGENATION GAS IS RECYCLED FROM THE LAST TO THE FIRST REACTOR AND AT A POINT INTERMEDIATE THE FIRST AND LAST REACTOR, A PORTION OF THE PARTIALLY DEPLETED HYDROGENATION GAS IS WITHDRAWN AND FRESH HYDROGENATION GAS, I.E., A GAS HAVING A HIGH HYDROGEN CONTENT, FED TO THE SYSTEM. THE MOLE RATIO OF HYDROGEN TO BENZENE FEED IS 3-3.8:1, THE VOLUMETRIC RATIO OF HYDROGENATION GAS NOT WITHDRAWN TO THAT WHICH IS WITHDRAWN AT THE DEPLETED HYDROGENATION GAS SEPARATOR IS 6-80:1, AND THE

    2.
    发明专利
    未知

    公开(公告)号：DE68902666T2

    公开(公告)日：1996-05-02

    申请号：DE68902666

    申请日：1989-02-20

    Applicant: TORAY INDUSTRIES

    Inventor： KANAI TAKASHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: By a process for preparing halogenated benzene derivatives comprising distilling or stripping a mixture of the isomers of a halogenated benzene derivative containing a hydrogen halide to remove the hydrogen halide from the isomeric mixture of the halogenated benzene derivative and then contacting with a zeolite adsorbent for selectivity separating the desired isomer of the halogenated benzene derivative it is possible to prevent from degrading the zeolite adsorbent. And it is possible to separate selectively industrially an desired isomer of the halogenated benzene derivative for a long time without reduction of productivity and to separate selectively the desired isomer in high purity.

    3.
    发明专利
    未知

    公开(公告)号：DE3874507D1

    公开(公告)日：1992-10-15

    申请号：DE3874507

    申请日：1988-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNSHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/389 ,  C07C25/02 ,  C07C17/38

    Abstract: A specific isomer of dichlorocumene is separated from a mixure containing dichlorocumene isomers by adsorptive separation, wherein the zeolite having at least 2 of silica/alumina molar ratio and 0.6 to 1.0 nm of pore size is used as the adsorbent and halogenated benzene or halogenated alkyl benzene is used as desorbent.

    5.
    发明专利
    未知

    公开(公告)号：DE3874507T2

    公开(公告)日：1993-04-22

    申请号：DE3874507

    申请日：1988-12-27

    Applicant: TORAY INDUSTRIES

    Inventor： YAMADA BUNSHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/389 ,  C07C25/02 ,  C07C17/38

    Abstract: A specific isomer of dichlorocumene is separated from a mixure containing dichlorocumene isomers by adsorptive separation, wherein the zeolite having at least 2 of silica/alumina molar ratio and 0.6 to 1.0 nm of pore size is used as the adsorbent and halogenated benzene or halogenated alkyl benzene is used as desorbent.

    6.
    发明专利
    未知

    公开(公告)号：DE68902666D1

    公开(公告)日：1992-10-08

    申请号：DE68902666

    申请日：1989-02-20

    Applicant: TORAY INDUSTRIES

    Inventor： KANAI TAKASHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/38 ,  C07C17/389 ,  C07C25/02

    Abstract: By a process for preparing halogenated benzene derivatives comprising distilling or stripping a mixture of the isomers of a halogenated benzene derivative containing a hydrogen halide to remove the hydrogen halide from the isomeric mixture of the halogenated benzene derivative and then contacting with a zeolite adsorbent for selectivity separating the desired isomer of the halogenated benzene derivative it is possible to prevent from degrading the zeolite adsorbent. And it is possible to separate selectively industrially an desired isomer of the halogenated benzene derivative for a long time without reduction of productivity and to separate selectively the desired isomer in high purity.

    PRODUCTION OF HALOGENATED BENZENE DERIVATIVE
    10.
    发明专利
    PRODUCTION OF HALOGENATED BENZENE DERIVATIVE 失效

    公开(公告)号：JPH0249740A

    公开(公告)日：1990-02-20

    申请号：JP4687789

    申请日：1989-02-27

    Applicant: TORAY INDUSTRIES

    Inventor： KANAI TAKASHI ,  KIMURA MICHIO ,  NOGUCHI YOSHIO

    IPC: C07C17/38 ,  C07C17/00 ,  C07C17/389 ,  C07C25/02 ,  C07C25/08 ,  C07C67/00

    Abstract: PURPOSE:To selectively separate the objective substance by subjecting an isomer mixture of halogenated benzene derivatives to distillation or diffusion treatment, removing hydrogen halides, water and low-boiling components contained in the above-mentioned mixture and bringing the resultant mixture into contact with a zeolite adsorbent. CONSTITUTION:An isomer mixture of halogenated benzene derivatives (e.g., dichlorobenzene or chlorotoluene) is subjected to diffusion treatment for blowing an inert gas and removing volatile components or distillation treatment by a conventional method to remove hydrogen halides, trace amounts of water and low-boiling components formed as a by-product and the resultant mixture is then brought into contact with a zeolite adsorbent (e.g. ZSM-5) to afford the objective isomer. Since deterioration of the zeolite adsorbent can be prevented by previously removing the hydrogen halides, water and low-boiling components formed as the by-product, the objective isomer can be separated for a long period even without deteriorating productivity.

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