Divalent ion removal from monoethylene glycol (MEG) feed streams
US9725388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2016 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2290/548
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system and process for removing divalent ions from a MEG feed stream is presented. Embodiments of the system include a chemical treatment tank where chemicals are mixed with the feed stream to form insoluble carbonate and hydroxide salts. The system also includes a solid-liquid separation unit that receives the feed stream from the chemical treatment tank and separates it into a liquids portion containing MEG and a insoluble salts portion. The system may also include washing the insoluble salts portion to remove additional MEG, which is then recycled to a MEG regeneration or reclamation process. The system may also include a dryer that receives waste slurry from the solid-liquid separation unit and dries it to form a solid waste, thereby facilitating its handling, storage, and disposal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.