发明授权
- 专利标题: Method for the distillative separation of a mixture containing vinyl ether and alchol
- 专利标题(中): 含有乙烯基醚和醇的混合物的蒸馏分离方法
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申请号: US10560135申请日: 2004-06-08
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公开(公告)号: US07670464B2公开(公告)日: 2010-03-02
- 发明人: Katrin Klass , Heike Becker , Regina Vogelsang , Alexander Hauk , Markus Siegert , Jochem Henkelmann
- 申请人: Katrin Klass , Heike Becker , Regina Vogelsang , Alexander Hauk , Markus Siegert , Jochem Henkelmann
- 申请人地址: DE Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DE Ludwigshafen
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权: DE10326403 20030612
- 国际申请: PCT/EP2004/006160 WO 20040608
- 国际公布: WO2004/110970 WO 20041223
- 主分类号: B01D3/36
- IPC分类号: B01D3/36 ; C07C29/82 ; C07C41/42 ; C07C43/16 ; C07C41/08
摘要:
Process for distillatively separating a mixture containing a vinyl ether of the general formula (I) R1—O—CH═CH2 (I) and alcohol of the general formula (II) R2—OH (II) in which R1 and R2 are each independently a saturated or unsaturated, aliphatic or cycloaliphatic radical having from 2 to 10 carbon atoms, and in which the alcohol (II) has a boiling point which is at least 1° C. higher, measured at or extrapolated to 0.1 MPa abs, than the vinyl ether (I), by a) passing the mixture into a first distillation column and withdrawing, as a top product, an azeotrope containing vinyl ether (I) and alcohol (II) and, as a bottom product, a stream enriched with the alcohol (II); b) passing the azeotrope containing vinyl ether (I) and alcohol (II) from the first distillation column into a second distillation column which is operated at a pressure which is from 0.01 to 3 MPa higher compared to the first distillation column, and withdrawing, as a bottom product or gaseous sidestream in the stripping section, the vinyl ether (I) and, as a top product, an azeotrope containing vinyl ether (I) and alcohol (II); and c) recycling the azeotrope containing vinyl ether (I) and alcohol (II) from the second distillation column into the first distillation column.
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