发明授权
- 专利标题: Process for separating butanol and dibutyl ether by means of dual-pressure distillation
- 专利标题(中): 通过双压蒸馏分离丁醇和二丁醚的方法
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申请号: US11700申请日: 1998-02-17
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公开(公告)号: US5985100A公开(公告)日: 1999-11-16
- 发明人: Maik Aron , Harald Rust
- 申请人: Maik Aron , Harald Rust
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX19531787 19950830
- 主分类号: C07C27/28
- IPC分类号: C07C27/28 ; C07C29/80 ; C07C31/12 ; C07C41/42 ; C07C43/04 ; B01D3/00
摘要:
Butanol and dibutyl ether are separated from a mixture containing water, dibutyl ether and n-butanol, 2-butanol and/or isobutanol by a process in whicha) the mixture is introduced into a first distillation column, essentially butanol is separated off at the bottom of this distillation column and the mixture taken off at the top of the distillation columnb) is introduced into a second distillation column and essentially dibutyl ether is separated off at the bottom of this second distillation column and the mixture formed at the top of the second distillation column is removed,c) the second distillation column being operated at a higher pressure than the first distillation column and at least one of the two mixtures taken off via the top of the distillation columns being subjected to phase separation, only the organic phase separated off being fed to the second distillation column in the case of phase separation downstream of the first distillation column, and separation into an aqueous and an organic phase also being effected in the case of phase separation downstream of the second distillation column, a part stream being recycled from the top or rectification section of the second distillation column to the first distillation column.
公开/授权文献
- US4759317A Multi-cylinder internal combustion engine 公开/授权日:1988-07-26