Process for recovery of ethylene oxide containing low levels of aldehydic impurities
US4134797A · kind A · utility
31Cited by
5References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1978 |
| Grant date | Jan 16, 1979 |
| Priority date | — |
| Expiry date | Feb 21, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the recovery of ethylene oxide containing low levels of aldehydic impurities from an impure aqueous ethylene oxide solution containing the same is provided in which the impure solution is treated in a novel multi-stage, countercurrent distillation zone for improved separation of said aldehydic impurities and recovery of an ethylene oxide-containing product stream having the desired low concentration of aldehydic impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.