Process for recovering dimethyl formyl amide from waste water |
Title： |
| Process for recovering dimethyl formyl amide from waste water |
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Application Number： |
200510086784 |
Application Date： |
2005/11/04 |
Announcement Date： |
2006/06/28 |
Pub. Date： |
2007/05/23 |
Publication Number： |
1793111 |
Announcement Number： |
1317259 |
Grant Date： |
2007-5-23 |
Granted Pub. Date： |
2007-5-23 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C07C 231/24, C07C 233/03, C02F 1/26, C02F 1/04 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Yang Mingde, Wu Yulong, Dang Jie, Hu Husheng, Wang Xinchang, He Peijiong |
Key Words： |
waste water, dimethyl formyl amide, recovering process |
Abstract： |
The invention relates to a recycle method for dimethyl formamide from waste water. The feature is that it contains two processes of extraction and rectification. The acid impurity could be neutralized by organic alkali to avoid the corruption to the device. The power consumption is decreased, and the process is simple. The purity of dimethyl formamide could be 99.9% and the recovery rate could reach to 98.5%. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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