Hydrodesulfurization of residual petroleum oil with a sulfided c

Details Hydrodesulfurization of residual petroleum oil with a sulfided c Hydrodesulfurization of residual petroleum oil with a sulfided c

1975-05-05

1976-09-14

Crasanakis, G. J.

Mineral oils: processes and products

Refining

Sulfur removal

C10G 2302

Patent

active

039805522

ABSTRACT:
Residual oils comprising asphaltenes, metal compounds, and refractory sulfur compounds are hydrodesulfurized by contact with a unique type of cobalt-molybdenum-alumina catalyst characterized by certain critical physical properties of surface area, pore volume, pore size distribution, and by a particle-form shape exhibiting a ratio of external surface area to volume of between about 70 and 160 reciprocal inches. The most critical characteristic of the catalyst, which appears to account mainly for its exceptionally high activity, stems from its method of manufacture. This method involves first mixing an alumina hydrogel with an ammonium molybdate solution, spray drying the resulting slurry to a water content of about 10-40 weight-percent, remulling the spray-dried composite with water, extruding the composite into extrudates of specific size ranges, calcining the extrudates, impregnating the calcined extrudates with an aqueous solution of a cobalt compound, and finally calcining the impregnated extrudates.

REFERENCES:
patent: 3686095 (1972-08-01), Coons, Jr. et al.
patent: 3749664 (1973-07-01), Mickelson
patent: 3755150 (1973-08-01), Mickelson
patent: 3770617 (1973-11-01), Riley et al.
patent: 3770618 (1973-11-01), Adams et al.
patent: 3907668 (1975-09-01), Christman et al.

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