Treated alumina material for fixed hydrofining beds

Details Treated alumina material for fixed hydrofining beds Treated alumina material for fixed hydrofining beds

1987-03-11

1988-08-30

Sneed, H. M. S.

Mineral oils: processes and products

Refining

Sulfur removal

208213, 208216R, 208251H, 208254H, 502 8, 502 9, C10G 4504

Patent

active

047675233

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 (NH.sub.4).sub.2 SO.sub.4 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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