发明名称 |
Process for the distillative separation of aqueous amine solutions |
摘要 |
The invention relates to an energy efficient process for the distillative working-up of aqueous amine solutions that occur in the catalytic hydrogenation of nitroaromatic compounds. In this process, the amine is freed from water and also the water is obtained free from amine and low-boiling compounds and the concentrated low-boiling compounds are obtained.
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申请公布号 |
US7575660(B2) |
申请公布日期 |
2009.08.18 |
申请号 |
US20050138991 |
申请日期 |
2005.05.26 |
申请人 |
BAYER MATERIALSCIENCE AG |
发明人 |
STEFFENS FRIEDHELM;BUSE RAINER;BRADY BILL |
分类号 |
B01D3/00;B01D3/14;C07B63/00;C07C51/44;C07C209/84;C07C209/86;C07C211/47;C07C211/50 |
主分类号 |
B01D3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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