Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2006-02-21
2006-02-21
Griffin, Walter D. (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S237000, C208S20800M
Reexamination Certificate
active
07001504
ABSTRACT:
A process for the removal of organosulfur compounds from hydrocarbon materials is disclosed. The process includes contacting an ionic liquid with a hydrocarbon material to extract sulfur-containing compounds into the ionic liquid. The sulfur-containing compounds can be partially oxidized to sulfoxides and/or sulfones prior to or during the extraction step.
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Extractica, LLC.
Griffin Walter D.
Sheridan & Ross P.C.
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