发明授权
US09382181B2 Workup of a cyclododecanone cyclododecanol mixture in a sequence of side draw columns
有权
在一系列侧抽塔中处理环十二烷环十二烷醇混合物
- 专利标题： Workup of a cyclododecanone cyclododecanol mixture in a sequence of side draw columns
- 专利标题（中）： 在一系列侧抽塔中处理环十二烷环十二烷醇混合物
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申请号： US14105587申请日： 2013-12-13
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公开(公告)号： US09382181B2公开(公告)日： 2016-07-05
- 发明人: Luca Cameretti , Daniel Demicoli , Ralf Meier
- 申请人： Evonik Industries AG
- 申请人地址： DE Essen
- 专利权人： EVONIK DEGUSSA GmbH
- 当前专利权人： EVONIK DEGUSSA GmbH
- 当前专利权人地址： DE Essen
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： DE102012223370 20121217
- 主分类号： C07C45/82
- IPC分类号： C07C45/82 ; C07C49/307 ; B01D3/14 ; C07C29/50 ; C07C29/80 ; C07C45/00 ; C07C45/33
摘要：
A process for removing a cyclododecanone-rich target fraction (A) from a dehydrogenation mixture (O) comprising low boilers (LB), cyclododecanone (CDON), medium boilers (MB), cyclododecanol (CDOL) and high boilers (HB) is provided. According to the process, substantially pure CDON is obtained via a distillative sequence of two side draw columns connected in series, wherein the sidestream of the primary side draw column is fed into the secondary side draw column. From the top of each of the two side draw columns, a CDON-rich fraction is drawn off, and these are combined to form a target fraction, which is essentially pure CDON.