Process for onstream regeneration of a hydrodesulfurization cata

Details Process for onstream regeneration of a hydrodesulfurization cata Process for onstream regeneration of a hydrodesulfurization cata

1975-04-28

1976-07-06

Crasanakis, G. J.

Mineral oils: processes and products

Refining

Sulfur removal

208251H, 252411R, C10G 2302

Patent

active

039680282

ABSTRACT:
An asphaltene-containing oil hydrodesulfurization process employing stages in series with an interstage flashing step. The second stage catalyst comprises Group VI and Group VIII metals together with a promoting amount of Group IV-B metal. The coke level on the second stage catalyst is reduced by intermittent increase and decrease of the hydrogen pressure in the second stage.

REFERENCES:
patent: 3767569 (1973-10-01), Mayer et al.
patent: 3840473 (1974-10-01), Beuther et al.
patent: 3871998 (1975-03-01), Rase et al.

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