Hydrodesulfurization process employing a promoted catalyst

Details Hydrodesulfurization process employing a promoted catalyst Hydrodesulfurization process employing a promoted catalyst

1977-06-28

1978-09-26

Crasanakis, George

Mineral oils: processes and products

Refining

Sulfur removal

208216, C10G 2302

Patent

active

041168178

ABSTRACT:
An asphaltene-containing oil hydrodesulfurization process employing an upstream catalyst and a downstream catalyst in series. The downstream catalyst comprises supported Group VI and Group VIII metals together with a promoting amount of Group IV-B metal in the form of particles whose surface is shaped by multiple elongated alternating grooves and protrusions. The upstream catalyst comprises Group VI and Group VIII metals without promotion with Group IV-B metal in the form of particles which may or may not be similarly shaped. Beds of the downstream and upstream catalyst may be diposed in the same or in different reactors. The adaptation of the grooved particle configuration to the promoted catalyst composition provided the early development of a plateau-like aging curve which was not achieved by the adaptation of the grooved shape to a non-promoted catalyst.

REFERENCES:
patent: 3674680 (1972-07-01), Hoekstra et al.
patent: 3968027 (1976-07-01), Frayer et al.
patent: 3985643 (1976-10-01), Milstein
patent: 3990964 (1976-11-01), Gustafson
patent: 4028227 (1977-06-01), Gustafson

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