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 |
EP1424332(A1) |
申请公布日期 |
2004.06.02 |
申请号 |
EP20020026240 |
申请日期 |
2002.11.26 |
申请人 |
DEGUSSA AG;UHDE GMBH |
发明人 |
HOFEN, WILLI;HAAS, THOMAS, DR.;WOELL, WOLFGANG;THIELE, GEORG, DR. |
分类号 |
C07D301/32;(IPC1-7):C07D301/32 |
主分类号 |
C07D301/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|