Process for extracting sulphur-containing compounds by liquid-liquid extraction by means of a soda solution with an optimized final washing step
US9512367B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Oct 16, 2012 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Jul 6, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Process of extracting sulphur-containing compounds from a hydrocarbon cut of the gasoline or LPG type by liquid-liquid extraction with a soda solution employing a unit (2) for pretreatment of the feedstock to be treated placed upstream of the extraction unit (4), the soda being introduced into the extraction column (4) in the form of two circuits operating either in parallel, or in series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.