Process stream purification
US5883268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1997 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | Oct 23, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C407/003
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Ethylbenzene hydroperoxide suitable for epoxidizing an olefin using a heterogeneous titanium catalyst is provided by the sequence of: PA1 a) flashing acids containing ethylbenzene peroxidase to reduce the temperature thereof to 170.degree. F. or lower, PA1 b) contacting the flash bottoms with aqueous base and separating a base contaminated deacidified hydroperoxide stream from an organics contaminated aqueous stream, PA1 c) removing organics from the organics contaminated aqueous stream by extraction with ethylbenzene, PA1 d) separating base from the base contaminated deacidified hydroperoxide stream by water extraction, and PA1 e) stripping water from deacidified water extracted hydroperoxide stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.