发明名称 |
Process for the purification of crude propene oxide |
摘要 |
The present invention relates to a process for the purification of a crude propene oxide containing methanol and acetaldehyde by a continuously operated extractive distillation using an extraction solvent lowering the volatility of methanol and feeding a compound containing an unsubstituted NH2 group capable of reacting with acetaldehyde to a distillation column at a point above the feeding point of the crude propene oxide to give a purified propene oxide containing less than 100 ppm methanol and less than 100 ppm acetaldehyde. The invention also relates to a process for the catalytic epoxidation of propene that includes this purification stage. |
申请公布号 |
ZA200504274(B) |
申请公布日期 |
2006.11.29 |
申请号 |
ZA20050004274 |
申请日期 |
2005.05.25 |
申请人 |
DEGUSSA AG;UHDE GMBH. |
发明人 |
HOFEN, WILLI;WOELL, WOLFGANG;HAAS, THOMAS;THIELE, GEORG |
分类号 |
C07C45/83;C07D;C07D301/32 |
主分类号 |
C07C45/83 |
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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