Using a dilute acid stream as an extractive agent
    51.
    发明授权
    Using a dilute acid stream as an extractive agent 有权
    使用稀酸流作为萃取剂

    公开(公告)号:US09024082B2

    公开(公告)日:2015-05-05

    申请号:US13456504

    申请日:2012-04-26

    IPC分类号: C07C29/149

    摘要: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. A diluted acid stream, comprising less than 30 wt. % acetic acid, is used as the extractive agent and is fed at a point above the crude feed stream. The column yields a residue that comprises ethanol, acetic acid, and water. The diluted acid stream may be separated from the residue and returned to the extractive distillation column.

    摘要翻译: 从使用萃取蒸馏塔的乙酸氢化获得的粗乙醇产物中回收乙醇。 稀释的酸流,包含小于30wt。 %乙酸用作萃取剂,并在原油进料流上方进料。 该柱产生包含乙醇,乙酸和水的残余物。 稀释的酸流可以与残余物分离并返回到萃取蒸馏塔。

    Extractive distillation of crude alcohol product
    53.
    发明授权
    Extractive distillation of crude alcohol product 有权
    粗酒精产物的萃取蒸馏

    公开(公告)号:US09000232B2

    公开(公告)日:2015-04-07

    申请号:US13456559

    申请日:2012-04-26

    摘要: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. The column yields a first residue that comprises ethanol, ethyl acetate, acetic acid, and water. The first residue is separated in a second column to yield a second distillate comprising ethanol and ethyl acetate. The second distillate is then separated in a third column to yield a third distillate comprising ethyl acetate and a third residue comprising ethanol.

    摘要翻译: 从使用萃取蒸馏塔的乙酸氢化获得的粗乙醇产物中回收乙醇。 该柱产生包含乙醇,乙酸乙酯,乙酸和水的第一残余物。 将第一残余物在第二塔中分离以产生包含乙醇和乙酸乙酯的第二馏出物。 然后将第二馏出物在第三塔中分离以产生包含乙酸乙酯和含有乙醇的第三残余物的第三馏出物。

    Vapor separation in alcohol production
    55.
    发明授权
    Vapor separation in alcohol production 有权
    酒精生产中的蒸气分离

    公开(公告)号:US08927782B2

    公开(公告)日:2015-01-06

    申请号:US13197740

    申请日:2011-08-03

    IPC分类号: C07C29/149 B01D3/06

    CPC分类号: B01D3/06 C07C29/149

    摘要: Two or more vapor-liquid separators are used in a process for removing at least one non-condensable gas from a crude alcohol mixture prepared by hydrogenating alkanoic acid and/or esters thereof. The vapor-liquid separators may comprise flashers or knock-out pots and are suitable for removing non-condensable gas, including those gases that are dissolved in the liquid. The multiple vapor-liquid separators may be in series prior to any separation of organic components. In addition, there may be a vapor-liquid separator before and after a distillation column for treating the feed to the column.

    摘要翻译: 在从通过氢化链烷酸和/或其酯制备的粗醇混合物中除去至少一种不可冷凝气体的方法中,使用两种或更多种气液分离器。 气液分离器可以包括闪蒸器或分离罐,并且适用于去除不可冷凝的气体,包括溶解在液体中的那些气体。 在任何分离有机组分之前,多个气液分离器可以是串联的。 此外,在用于处理塔的进料的蒸馏塔之前和之后可以有气 - 液分离器。