Method for the production of propylene oxide
    6.
    发明授权
    Method for the production of propylene oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US06756503B2

    公开(公告)日:2004-06-29

    申请号:US10312862

    申请日:2003-01-02

    IPC分类号: C07D30112

    CPC分类号: C07D301/12 Y02P20/582

    摘要: A process for the preparation of propylene oxide in which (i) propene is reacted with hydrogen peroxide in the presence of methanol to give propylene oxide, giving a mixture (Gi) comprising propylene oxide, methanol, water and unreacted hydrogen peroxide, (ii) a mixture (Gii) comprising methanol, water and hydrogen peroxide is separated off from the mixture (Gi), giving a mixture (Ga) comprising propylene oxide, and (iii) water is separated off from the mixture (Gii), giving a mixture (Giii) comprising methanol and methyl formate.

    摘要翻译: 一种制备环氧丙烷的方法,其中(i)丙烯在甲醇存在下与过氧化氢反应得到环氧丙烷,得到包含环氧丙烷,甲醇,水和未反应的过氧化氢的混合物(Gi),(ii) 从混合物(Gi)中分离出包含甲醇,水和过氧化氢的混合物(Gii),得到包含环氧丙烷的混合物(Ga),和(iii)从混合物(Gii)中分离出水,得到混合物 (Giii),其包含甲醇和甲酸甲酯。

    Method for producing propylene oxide
    10.
    发明授权
    Method for producing propylene oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US06881853B2

    公开(公告)日:2005-04-19

    申请号:US10484204

    申请日:2002-07-18

    IPC分类号: C07D301/12

    CPC分类号: C07D301/12 Y02P20/582

    摘要: A process for preparing propylene oxide comprises at least the following steps: (a) propene is reacted with a hydroperoxide in a solvent in the presence of a zeolite catalyst to give a mixture (M0), where the mixture (M0) comprises propylene oxide, solvent, unreacted propene, unreacted hydroperoxide and oxygen, (b) the propylene oxide is separated from the mixture (M0) so as to give a mixture (M1) which comprises unreacted propene and oxygen, (c) the mixture (M1) is brought into contact with a liquid medium comprising at least a solvent to give the mixtures (M2) and (M3), where the mixture (M3) comprises part of the unreacted propene and oxygen and the mixture (M2) comprises solvent and residual propene, and  the mixture (M3) which has been separated off and comprises unreacted propene and oxygen has a ratio of oxygen to propene such that the mixture (M3) is not ignitable, and  the mixture (M2) is fed to at least one reaction of propene with hydroperoxide.

    摘要翻译: 制备环氧丙烷的方法至少包括以下步骤:(a)在沸石催化剂存在下,使丙烯与溶剂中的氢过氧化物反应得到混合物(M 0),其中混合物(M 0)包含丙烯 氧化物,溶剂,未反应的丙烯,未反应的氢过氧化物和氧气,(b)将环氧丙烷与混合物(M 0)分离,得到包含未反应的丙烯和氧的混合物(M 1),(c)混合物 M 1)与包含至少一种溶剂的液体介质接触以得到混合物(M 2)和(M 3),其中混合物(M 3)包含部分未反应的丙烯和氧气以及混合物(M 2)包括溶剂和残余丙烯,并且已经分离并包含未反应的丙烯和氧的混合物(M 3)具有氧与丙烯的比例,使得混合物(M 3)不可燃,并且混合物(M 2)进料至丙烯与氢过氧化物的至少一个反应。