公开(公告)号：US20110036702A1

公开(公告)日：2011-02-17

申请号：US12911200

申请日：2010-10-25

申请人： Juan HERGUIJUELA ,  Warner Pietzonka ,  Angela Wildermann ,  Thomas Wolf

发明人： Juan HERGUIJUELA ,  Warner Pietzonka ,  Angela Wildermann ,  Thomas Wolf

IPC分类号： B01D3/26

CPC分类号： B01D3/143 ,  B01D3/32 ,  B01D5/0063 ,  C07D311/72

摘要： According to the invention, a process for the rectification of mixtures of high-boiling air- and/or temperature-sensitive substances which require a high separation efficiency is proposed, in particular a process for the working-up of a VE- or VEA-containing product stream. The process is characterized in particular in that, in a first purification stage, low-boiling products and unspecified isomers of the useful product are separated from the product stream virtually without loss of useful product and that, in a second purification stage, the useful product is removed in a stream having a purity of >97% by weight and a further stream having a purity of >92% by weight. A preferred embodiment of the process serves for working up VEA, in which the loss of useful product in the first purification stage is less than 5%, based on that amount of VEA in the feed which is added to the purification stage per unit time. Furthermore, the first purification stage may comprise a rectification column (1), from the top (1a) of which the low-boiling products and the unspecified isomers of VEA are taken off, a stream containing the useful product in purified form being taken off at the side (15) and/or at the bottom (1b) of the column (1).

摘要翻译： 根据本发明，提出了需要高分离效率的高沸点空气和/或温度敏感物质的混合物的精馏方法，特别是用于处理VE-或VEA- 含有产品流。 该方法的特征在于，在第一纯化阶段中，将有用产物的低沸点产物和未指定的异构体与产物流分离，实际上不损失有用的产物，并且在第二纯化阶段中，有用的产物 在纯度> 97％重量的物流中除去，另一种纯度> 92％（重量）的物流。 该方法的优选实施方案用于处理VEA，其中基于每单位时间添加到纯化阶段的进料中的VEA量，第一纯化阶段中有用产物的损失小于5％。 此外，第一纯化阶段可以包括精馏塔（1），从其顶部（1a）排出低沸点产物和VEA的未指定的异构体，将含有纯化形式的有用产物的料流取出 在塔（1）的侧面（15）和/或底部（1b）处。