Recovery of petroleum sulfonate salt
AssigneePhillips Petroleum Company
InventorPaul R. Stapp
Life of this patent
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Abstract
Deoiled monosulfonated oil salt is recovered from mass containing it together with unsulfonated oil, polysulfonated oil salt, and some mineral matter by diluting the mass with an aqueous-alcoholic solution, removing with a suitable solvent, an extract containing unsulfonated oil, then removing the alcohol and water from a thus-contained raffinate phase, diluting or dissolving thus-concentrated sulfonate salts with or in water and extracting with a suitable extraction solvent the mass thus obtained to remove therefrom an extract containing a concentration of monosulfonate salts.
Claims10
A process for the recovery of deoiled monosulfonated oil salt from a mass containing it together with unsulfonated oil, polysulfonated oil salt and some mineral matter which comprises diluting the mass with an aqueous-alcoholic solution, extracting the diluted mass with an extractant suitable to remove therefrom an extract containing unsulfonated oil, removing substantially the alcohol and water from a remaining raffinate phase, diluting or dissolving sulfonate salts, thus concentrated, with or in water, and extracting the mass thus obtained with another extractant suitable to remove therefrom an extract containing a concentration of monosulfonate salt.
Dependencies are inferred from the claim text.