CO-PRODUCTION OF DIALKYL CARBONATES AND DIOLS WITH TREATMENT OF HYDROXY ALKYL CARBONATE
    1.
    发明公开
    CO-PRODUCTION OF DIALKYL CARBONATES AND DIOLS WITH TREATMENT OF HYDROXY ALKYL CARBONATE 审中-公开
    KOPPEL和二DIOLEN与处理羟烷基酯制造

    公开(公告)号:EP1434754A1

    公开(公告)日:2004-07-07

    申请号:EP02744822.4

    申请日:2002-07-02

    IPC分类号: C07C68/06

    摘要: A process for the production of a dialkyl carbonate and a diol from a cyclic carbonate and an aliphatic monohydric alcohol wherein the cyclic carbonate and aliphatic monohydric alcohol are reacted in the presence of a transesterification catalyst to form a crude product stream which contains a dialkyl carbonate, a diol, a hydroxy alkyl carbonate, which is formed as an intermediate of the two step transesterification reaction, unreacted aliphatic monohydric alcohol and unreacted cyclic carbonate. The dialkyl carbonate and unreacted aliphatic monohydric alcohol are separated from the crude product stream and then the hydroxy alkyl carbonate is diminished, reduced or eliminated from the crude product stream, prior to the separation and purification steps needed to recover the diol, resulting in improved yields and product purity.

    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE
    2.
    发明公开
    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE 有权
    生产环己基苯的方法

    公开(公告)号:EP2244992A1

    公开(公告)日:2010-11-03

    申请号:EP09711464.9

    申请日:2009-01-13

    摘要: In a process for producing cyclohexylbenzene, hydrogen and a liquid feed comprising benzene are introduced into a reaction zone and are contacted in the reaction zone under hydroalkylation conditions to produce cyclohexylbenzene. An effluent stream comprising cyclohexylbenzene and unreacted benzene is removed from the reaction zone and is divided into at least first and second portions, wherein the mass ratio of the effluent stream first portion to the effluent stream second portion is at least 2: 1. The effluent stream first portion is then cooled and the cooled effluent stream first portion is recycled to the reaction zone.

    摘要翻译: 在生产环己基苯的方法中,将氢气和包含苯的液体进料引入反应区并在加氢烷基化条件下在反应区中接触以产生环己基苯。 将包含环己基苯和未反应的苯的流出物流从反应区中除去并分成至少第一部分和第二部分,其中流出物流第一部分与流出物流第二部分的质量比为至少2:1。流出物 然后将第一部分流冷却,并将冷却的流出物流第一部分循环至反应区。

    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE
    3.
    发明公开
    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE 有权
    用于生产环己基苯

    公开(公告)号:EP2200954A1

    公开(公告)日:2010-06-30

    申请号:EP08797654.4

    申请日:2008-08-12

    IPC分类号: C07C2/74 C07C13/28

    CPC分类号: C07C2/74 Y02P20/52 C07C13/28

    摘要: In a process for producing cyclohexylbenzene, benzene and hydrogen are fed to at least one reaction zone. The benzene and hydrogen are then contacted in the at least one reaction zone under hydroalkylation conditions with a catalyst system comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom, and at least one hydrogenation metal to produce an effluent containing cyclohexylbenzene. The ratio of the total number of moles of hydrogen fed to said at least one reaction zone to the number of moles of benzene fed to said at least one reaction zone is between 0.4 and 0.9: 1.

    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE
    6.
    发明授权
    PROCESS FOR PRODUCING CYCLOHEXYLBENZENE 有权
    VERFAHREN ZUR HERSTELLUNG VON CYCLOHEXYLBENZOL

    公开(公告)号:EP2244992B1

    公开(公告)日:2012-08-08

    申请号:EP09711464.9

    申请日:2009-01-13

    摘要: In a process for producing cyclohexylbenzene, hydrogen and a liquid feed comprising benzene are introduced into a reaction zone and are contacted in the reaction zone under hydroalkylation conditions to produce cyclohexylbenzene. An effluent stream comprising cyclohexylbenzene and unreacted benzene is removed from the reaction zone and is divided into at least first and second portions, wherein the mass ratio of the effluent stream first portion to the effluent stream second portion is at least 2: 1. The effluent stream first portion is then cooled and the cooled effluent stream first portion is recycled to the reaction zone.

    摘要翻译: 在生产环己基苯的方法中,将氢和含苯的液体原料引入反应区,并在加氢烷基化条件下在反应区中接触以制备环己基苯。 将包含环己基苯和未反应苯的流出物流从反应区除去,并分成至少第一和第二部分,其中流出物流第一部分与流出物流第二部分的质量比至少为2:1。 然后将流出物流第一部分冷却,将冷却的流出物流第一部分再循环至反应区。