Two-step hydrodesulfurization of heavy hydrocarbon oil

Details Two-step hydrodesulfurization of heavy hydrocarbon oil Two-step hydrodesulfurization of heavy hydrocarbon oil

1978-07-17

1979-08-28

Crasanakis, George

Mineral oils: processes and products

Refining

Sulfur removal

208216PP, 252457, 252456, 252459, C10G 2302

Patent

active

041660269

ABSTRACT:
A process for hydrodesulfurization of heavy hydrocarbon oil containing asphaltenes and heavy metals in large amounts is disclosed. The heavy oil is hydrotreated in a continuous 2-step process. In the first step the heavy oil is subjected to hydrodemetallization and selective cracking of asphaltenes by the use of a catalyst having a unique selectivity therefor. In the second step the effluent from the first step is subjected to hydrodesulfurization to produce desulfurized oils of high grade by the use of a catalyst having a pore volume and pore size distribution particularly adapted for the hydrodesulfurization of the effluent.

REFERENCES:
patent: 3725251 (1973-04-01), Alpert et al.
patent: 3770617 (1973-11-01), Riley et al.
patent: 3803027 (1974-04-01), Christman et al.
patent: 3859199 (1975-01-01), Gatsis
patent: 3867282 (1975-02-01), Fischer et al.
patent: 4048060 (1977-09-01), Riley

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