Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2007-07-17
2007-07-17
Caldarola, Glenn A. (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S203000, C208S204000, C208S206000
Reexamination Certificate
active
10359860
ABSTRACT:
A process for producing a naphtha having a decreased amount of sulfur by selective hydroprocessing a petroleum feedstream comprising cracked naphtha to reduce its sulfur content with minimum loss of octane. The reduced sulfur naphtha stream contains mercaptan sulfur reversion products that are removed preferably by use of an aqueous base solution containing a catalytically effective amount of a phase transfer catalyst.
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Brignac Garland B.
Cook Bruce R.
Greaney Mark A.
Greeley John P.
Halbert Thomas R.
Caldarola Glenn A.
Carter Lawrence E.
Douglas John
ExxonMobil Research and Engineering Company
Kliebert J. J.
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