PROCESS FOR THE SEPARATION OF ALCOHOLS
    1.
    发明申请
    PROCESS FOR THE SEPARATION OF ALCOHOLS 审中-公开
    分离酒精的方法

    公开(公告)号:US20160107965A1

    公开(公告)日:2016-04-21

    申请号:US14892391

    申请日:2014-05-28

    CPC classification number: C07C29/86 C07C29/80 C07C31/202 C07C31/205 C07C31/207

    Abstract: The invention provides a process for the recovery of a first alcohol from a stream comprising two or more alcohols, said process comprising the steps of providing a stream comprising two or more alcohols, providing a solvent stream, combining said stream comprising two or more alcohols with said solvent stream in the presence of water and recovering at least a portion of the first alcohol by liquid-liquid extraction.

    Abstract translation: 本发明提供了从包含两种或更多种醇的物流中回收第一种醇的方法,所述方法包括以下步骤:提供包含两种或更多种醇的物流,提供溶剂流,将包含两种或更多种醇的物流与 所述溶剂流在水的存在下并通过液 - 液萃取回收至少一部分第一醇。

    PROCESS FOR THE SEPARATION OF CLYCOLS
    2.
    发明申请

    公开(公告)号:US20180079702A1

    公开(公告)日:2018-03-22

    申请号:US15564438

    申请日:2016-04-05

    CPC classification number: C07C29/82 C07C29/80 C07C31/202

    Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a weight ratio of at least 10:1 (MEG:1,2- BDO), said process comprising the steps of; (i) providing the first mixture as a feed to a distillation column at a point in the range of from 20 to 80% of the column height; (ii) operating the distillation at a temperature in the range of from 120 to 190° C. and at a pressure in the range of from 5 kPa to atmospheric pressure; (iii) removing an MEG stream from the distillation column at a point below the point at which the first mixture is fed; (iv) removing an overheads stream comprising an azeotrope of MEG and 1,2-BDO.

    PROCESS FOR THE SEPARATION OF GLYCOLS
    3.
    发明申请

    公开(公告)号:US20170313640A1

    公开(公告)日:2017-11-02

    申请号:US15524276

    申请日:2015-11-04

    Abstract: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.

    PROCESS FOR THE PRODUCTION OF GLYCOLS
    4.
    发明公开

    公开(公告)号:US20240317659A2

    公开(公告)日:2024-09-26

    申请号:US18245572

    申请日:2021-10-04

    CPC classification number: C07C29/84 C07C29/172 C07C29/82

    Abstract: The invention provides a process for the separation of a diol from a product stream. The process includes the steps of: i) separating the product stream comprising three or more C2 to C6 diols, C3 to C6 sugar alcohols, and C4 to C6 polyhydric alcohols with at least 3 hydroxyl groups in the molecule, and a catalyst, to produce a first stream comprising the three or more C2 to C6 diols; ii) separating the first stream comprising the three or more C2 to C6 diols into a) a second stream comprising a first diol and unsaturated hydrocarbons and/or one or more compounds with a carbonyl group and b) a third stream comprising two or more diols; iii) hydrogenating the second stream comprising a first diol and unsaturated hydrocarbons and/or one or more compounds with a carbonyl group to provide a purified diol stream.

    PROCESS FOR THE PRODUCTION OF GLYCOLS
    5.
    发明公开

    公开(公告)号:US20230365482A1

    公开(公告)日:2023-11-16

    申请号:US18245572

    申请日:2021-10-04

    CPC classification number: C07C29/84 C07C29/82 C07C29/172

    Abstract: The invention provides a process for the separation of a diol from a product stream. The process includes the steps of: i) separating the product stream comprising three or more C2 to C6 diols, C3 to C6 sugar alcohols, and C4 to C6 polyhydric alcohols with at least 3 hydroxyl groups in the molecule, and a catalyst, to produce a first stream comprising the three or more C2 to C6 diols; ii) separating the first stream comprising the three or more C2 to C6 diols into a) a second stream comprising a first diol and unsaturated hydrocarbons and/or one or more compounds with a carbonyl group and b) a third stream comprising two or more diols; iii) hydrogenating the second stream comprising a first diol and unsaturated hydrocarbons and/or one or more compounds with a carbonyl group to provide a purified diol stream.

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