System and method for pH control of lean MEG product from MEG regeneration and reclamation packages
US10232340B2 · kind B2 · utility
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21Claims
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Key dates
| Filing date | Sep 11, 2017 |
| Grant date | Mar 19, 2019 |
| Priority date | — |
| Expiry date | Sep 11, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A MEG stream having a first pH level is contacted with a CO2-rich gas stream to yield a MEG product having a second different and lower pH level. The system and method can be readily incorporated into a slipstream MEG recovery package, with a source of the 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 MEG product to be stored or injected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.