Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2011-01-18
2011-01-18
Griffin, Walter D (Department: 1774)
Mineral oils: processes and products
Refining
Sulfur removal
C208S21600R, C502S305000, C502S313000, C502S315000
Reexamination Certificate
active
07871513
ABSTRACT:
Described is a catalyst useful in the hydroprocessing of a heavy hydrocarbon feedstock wherein the catalyst comprises a calcined mixture made by calcining a formed particle of a mixture comprising molybdenum trioxide, a nickel compound, and an inorganic oxide material. The catalyst may be made by mixing an inorganic oxide material, molybdenum trioxide, and a nickel compound to form a mixture that is formed into a particle and calcined to provide a calcined mixture. The process involves the hydrodesulfurization and hydroconversion of a heavy hydrocarbon feedstock which process may include the conversion of a portion of the pitch content of the heavy hydrocarbon feedstock and the yielding of a treated product having an enhanced stability as reflected by its P-value.
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Griffin Walter D
McCaig Brian
Shell Oil Company
Stewart Charles W.
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