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 |
AU2003294723(A1) |
申请公布日期 |
2004.06.18 |
申请号 |
AU20030294723 |
申请日期 |
2003.11.25 |
申请人 |
DEGUSSA AG |
发明人 |
WILLI HOFEN;THOMAS HAAS;WOLFGANG WOLL;GEORG THIELE |
分类号 |
C07C45/83;C07D301/32;(IPC1-7):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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