发明名称 |
PROPYLENE OXIDE RECOVERY FROM PROPYLENE OXIDE AND METHANOL MIXTURE |
摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention refers to method of propylene oxide recovery from mixture (M) containing 5 to 15 weight percent and 50 to 85 methanol weight percent. The disclosed method involves (i) introduction of specified mixture (M) to an extractive distillation column; (ii) additional introduction of polar solvent to specified extractive distillation column; (iii) predistillation of propylene oxide from specified extractive distillation column at bottom temperature 40 to 70C and pressure 300 to 750 mbar. The polar solvent is water in amount 2 weight percent of mixture (M) or less. ^ EFFECT: higher recovery. ^ 10 cl, 3 dwg, 2 tbl, 3 ex |
申请公布号 |
RU2357963(C2) |
申请公布日期 |
2009.06.10 |
申请号 |
RU20070104286 |
申请日期 |
2005.07.06 |
申请人 |
BASF AKTSIENGEZEL'SHAFT;DZE DAU KEMIKAL KOMPANI |
发明人 |
GEBBEL' KHANS-GEORG;SHUL'TTS KHENNING;SHUL'TTS PETER;PATRASKU RENATE;SHUL'TS MAL'TE;VAJDENBAKH MAJNOL'F |
分类号 |
C07D301/32 |
主分类号 |
C07D301/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|