Process for treating water containing hydrocarbons by means of expanded graphite
US10913666B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Aug 9, 2017 |
| Grant date | Feb 9, 2021 |
| Priority date | — |
| Expiry date | Dec 28, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/18
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for the treatment of water containing low quantities of hydrocarbons (as dispersed or dissolved or emulsified) by means of expanded graphite having an apparent density from 2 to less than 5 g/l, wherein said hydrocarbons are present in a quantity less than or equal to 1 g/l, a specific surface area from 50 to 100 m2/g and a carbon/oxygen ratio (C:O)≥100. The expanded graphite is mixed vigorously for a short time with the water contaminated by hydrocarbons and easily separated at the end of the treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.