发明授权
- 专利标题: Separation of pyridine from water by extractive distillation
- 专利标题(中): 通过萃取蒸馏从吡啶中分离吡啶
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申请号: US663439申请日: 1991-03-01
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公开(公告)号: US5100514A公开(公告)日: 1992-03-31
- 发明人: Lloyd Berg , Zuyin Yang
- 申请人: Lloyd Berg , Zuyin Yang
- 申请人地址: MT Bozeman
- 专利权人: Berg; Lloyd
- 当前专利权人: Berg; Lloyd
- 当前专利权人地址: MT Bozeman
- 主分类号: B01D3/36
- IPC分类号: B01D3/36 ; B01D3/40 ; C07D213/06
摘要:
Pyridine cannot be completely separated from water by conventional distillation or rectification because of the minimum boiling azeotrope. Pyridine can be readily separated from water by using azeotropic or extractive distillation. Typical examples of effective agents are: by azeotropic distillation, methyl isoamyl ketone and propylene glycol dimethyl ether; by extractive distillation, isophorone and sulfolane.
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