System and method for pH control of lean MEG product from MEG regeneration and reclamation packages
US9216934B1 · kind B1 · utility
0Cited by
0References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Sep 29, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A lean MEG stream having a first pH level is contacted with a CO2-rich gas stream to yield a lean MEG product having a second different and lower pH level preferably in a range of 6.5 to 7.0. The system and method can be readily incorporated into a slipstream MEG recovery package, with a source of the lean MEG stream being a MEG regeneration section of the package. The CO2-rich gas could be a vented CO2 stream from the MEG reclamation section of the package. Unlike hydrochloric and acetic acid overdosing, CO2 overdosing of the lean MEG stream does not lead to rapid acidification of the lean MEG product to be stored or injected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.