Short contact, elevated temperature MEG reclamation
US11524927B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2015 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Jul 16, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Monoethylene glycol (MEG) may be reclaimed by a process that includes contacting a MEG-water-salt stream with a heat transfer fluid and then flash separating the MEG and water in the flash separator vessel where the pressure is higher than 0.3 barA (0.03 MPa), the temperature is in the range of above 120° C. to about 250° C., and the residence time of the MEG and water ranges from about 1 second to about 10 minutes, and then removing the MEG and water in an overhead of the flash separator vessel and removing the salt from the flash separator vessel. In some embodiments it is expected that the temperature of the process may range from above 165° C. to about 250° C. and/or that the pressure may be atmospheric.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.