Catalyst and process for the manufacture of ultra-low sulfur distillate product
AssigneeShell Oil Company
InventorOpinder Kishan Bhan
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Abstract
Described is a catalyst and process useful in the hydrodesulfurization of a distillate feedstock to manufacture a low-sulfur distillate product. The catalyst comprises a calcined mixture of inorganic oxide material, a high concentration of a molybdenum component, and a high concentration of a Group VIII metal component. The mixture that is calcined to form the calcined mixture comprises molybdenum trioxide in the form of finely divided particles, a Group VIII metal compound, and an inorganic oxide material. The catalyst is made by mixing the aforementioned starting materials and forming therefrom an agglomerate that is calcined to yield the calcined mixture that may be used as the catalyst or catalyst precursor.
Claims30
A composition for use as a distillate hydrodesulfurization catalyst in the manufacture of an ultra-low sulfur distillate product, wherein said composition comprises:
- a calcined mixture made by calcining a co-mulled mixture comprising an inorganic oxide material, molybdenum trioxide in the form of finely divided particles having a maximum dimension of less than 150 μm, and a Group VIII metal compound selected from the group consisting of a nickel compound, a cobalt compound and a combination thereof, wherein said calcined mixture has a molybdenum content in the range of from 10 weight percent to 22 weight percent with the weight percent being based upon the molybdenum as metal and the total weight of said calcined mixture, and a Group VIII metal content in the range of from 3 weight percent to 12 weight percent with the weight percent being based upon the Group VIII metal in its elemental form and the total weight of said calcined mixture, wherein said calcined mixture further comprises a promoter component selected from the group of phosphorous compounds, wherein said calcined mixture has a mean pore diameter in the range of from 50 angstroms to 100 angstroms, and wherein said calcined mixture has less than or equal to 66.14% of the total pore volume contained in pores of 150 angstroms or less in diameter.
A composition for use as a distillate hydrodesulfurization catalyst in the manufacture of an ultra-low sulfur distillate product, wherein said composition comprises:
- a calcined mixture made by calcining a mixture comprising a substantial absence of a molybdenum compound that is in a form other than molybdenum trioxide and further comprising a co-mulled mixture of an inorganic oxide material, molybdenum trioxide in the form of finely defined particles having a maximum dimension of less than 150 μm, and a Group VIII metal compound selected from the group consisting of a nickel compound, a cobalt compound and a combination thereof, wherein said calcined mixture has a molybdenum content in the range of from 10 weight percent to 22 weight percent with the weight percent being based upon the molybdenum as metal and the total weight of said calcined mixture, and a Group VIII metal content in the range of from 3 weight percent to 12 weight percent with the weight percent being based upon the Group VIII metal in its elemental form and the total weight of said calcined mixture, wherein said calcined mixture further comprises a promoter component selected from the group of phosphorous compounds, and wherein said calcined mixture has a pore structure that includes a mean pore diameter in the range of from 50 angstroms to 100 angstroms, and wherein said calcined mixture has less than or equal to 66.14 percent of the total pore volume in pores having a diameter of 150 angstroms or less.
A composition for use as a distillate hydrodesulfurization catalyst in the manufacture of an ultra-low sulfur distillate product, wherein said composition comprises:
- a calcined mixture made by calcining a co-mulled mixture consisting essentially of an inorganic oxide material, molybdenum trioxide in the form of finely divided particles having a maximum dimension of less than 150 μm, and a Group VIII metal compound selected from the group consisting of a nickel compound and a cobalt compound, wherein said calcined mixture has a molybdenum content in the range of from 7 weight percent to 22 weight percent with the weight percent being based upon the molybdenum as metal and the total weight of said calcined mixture, and a Group VIII metal content in the range of from 3 weight percent to 12 weight percent with the weight percent being based upon the Group VIII metal in its elemental form and the total weight of said calcined mixture, wherein said calcined mixture has a mean pore diameter in the range of from 50 angstroms to 100 angstroms, and wherein said calcined mixture has less than or equal to 66.14 percent of the total pore volume in pores having a pore diameter of 150 angstroms or less.
Dependencies are inferred from the claim text.