发明公开
- 专利标题： A METHOD AND AN ARRANGEMENT FOR SEPARATING AT LEAST ONE CARBOXYLIC ACID AND FURFURAL FROM A DILUTE AQUEOUS MIXTURE THEREOF
- 专利标题（中）： 方法和装置分离至少一种羧酸和糠醛从稀释的含水混合物吧
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申请号： EP12795015.2申请日： 2012-11-02
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公开(公告)号： EP2773437A1公开(公告)日： 2014-09-10
- 发明人: TIRRONEN, Esko , LAITINEN, Antero , HIETALA, Jukka
- 申请人： Taminco Finland Oy
- 申请人地址： Typpitie 1 90650 Oulu FI
- 专利权人： Taminco Finland Oy
- 当前专利权人： Taminco Finland Oy
- 当前专利权人地址： Typpitie 1 90650 Oulu FI
- 代理机构： Gevers Patents
- 优先权： FI20116091 20111104
- 国际公布： WO2013064751 20130510
- 主分类号： B01D11/04
- IPC分类号： B01D11/04 ; C07C51/48 ; C07D307/50
摘要：
The present invention relates to a method and an arrangement for separation and recovery of at least one carboxylic acid and furfural from a dilute aqueous mixture thereof. In the method of the present invention a dilute aqueous mixture comprising at least one carboxylic acid and furfural is extracted with methyltetrahydrofurane, and at least one carboxylic acid and furfural are recovered. The arrangement of the present invention comprises an extraction unit 302 for carrying out extraction of at least one carboxylic acid and furfural from dilute aqueous mixture with methyltetrahydrofuran, connected to distillation unit 307 for carrying out distillation of the extract 305 from the extraction unit 302, and connected to acids distillation unit 320 for carrying out distillation of the bottom stream 308 from the distillation unit 307 to separate at least one carboxylic acid and furfural.
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