Process for demetallation and desulfurization of heavy hydrocarb

Details Process for demetallation and desulfurization of heavy hydrocarb Process for demetallation and desulfurization of heavy hydrocarb

1978-07-26

1980-07-15

Crasanakis, George

Mineral oils: processes and products

Refining

Sulfur removal

208216PP, C10G 2302

Patent

active

042127297

ABSTRACT:
Disclosed is a two-stage catalytic process for hydrodemetallation and hydrodesulfurization of heavy hydrocarbon streams containing asphaltenes and a substantial amount of metals. The first stage of this process comprises contacting the feedstock in a first reaction zone with hydrogen and a demetallation catalyst comprising hydrogenation metal selected from Group VIB and/or Group VIII deposed on a large-pore, high surface area inorganic oxide support; the second stage of the process comprises contacting the effluent from the first reaction zone with a catalyst consisting essentially of hydrogenation metal selected from Group VIB deposed on a smaller pore, catalytically active support comprising alumina, said second stage catalyst having a surface area within the range of about 150 m.sup.2 /gm to about 300 m.sup.2 /gm, having a majority of its pore volume in pore diameters within the range of about 80 A to about 130 A, and the catalyst has a pore volume within the range of about 0.4 cc/gm to about 0.9 cc/gm.

REFERENCES:
patent: 3714032 (1973-01-01), Bertolacini et al.
patent: 3803027 (1974-04-01), Christman et al.
patent: 3898155 (1975-08-01), Wilson
patent: 4014821 (1977-03-01), Hamner
patent: 4016067 (1977-04-01), Fischer et al.

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