Hydrofining employing treated alumina material in fixed beds

Details Hydrofining employing treated alumina material in fixed beds Hydrofining employing treated alumina material in fixed beds

1987-03-12

1989-02-07

Davis, Curtis R.

Mineral oils: processes and products

Refining

Sulfur removal

208216PP, 208251H, 208254H, 502341, C10G 4508, C10G 4560

Patent

active

048029742

ABSTRACT:
A hydrotreating process comprises contacting a substantially liquid hydrocarbon-containing feed stream, which contains compounds of sulfur and metals (preferably Ni and/or V), in the presence of a fixed catalyst bed comprising (a) at least one layer of impregnated substantially spherical alumina-containing particles which have been prepared by a process comprising the steps of impregnating specific starting material with at least one dissolved magnesium compound and then heating the thus impregnated material at about 500.degree.-900.degree. C. for improved crush strength retention. In a preferred embodiment, the fixed catalyst bed further comprises at least one layer (b) of catalyst particles comprising a refractory inorganic carrier and at least one hydrogenation promoter. A composition of matter comprising the impregnated, spherical alumina-containing particles described above, and a process for preparing them are also provided.

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