Method for treatment of high pH/silica brines
US8062530B2 · kind B2 · utility
5Cited by
13References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 3, 2008 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Nov 27, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A method for neutralizing brines that contain high levels of silica accompanied with a high pH. Brine is processed through a reactor in which the pH is lowered and the resultant silica precipitate is adsorbed onto a sacrificial crystal structure. The resultant stream is then processed through a solids removal zone wherein the solids are removed and recovered for reuse. The neutralized solids-free brine is then suitable for down-hole injection in the heavy oil industry or further treatment by common water treatment methods if further adjustment is required for other industries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.