Process for removing sulfur from petroleum oils

Details Process for removing sulfur from petroleum oils Process for removing sulfur from petroleum oils

1980-06-25

1981-08-11

Vertiz, O. R.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Plural serial stages of chemical conversion

208 61, 208 89, 208 93, 208144, 208211, C10G 700, C10G 4500

Patent

active

042832705

ABSTRACT:
The present invention is directed to a process for desulfurizing petroleum oils and for improving the performance of known catalytic hydrodesulfurization processes. In accordance with the process, a narrow boiling fraction of a typical hydrodesulfurization feedstock is selectively removed prior to the introduction of said feedstock into the hydrodesulfurization unit. Feedstocks include gas oils, residual oils or other fractions which contain sulfur in the form of sulfides, disulfides and a part of a substituted ring such as thiophene, benzothiophene and dibenzothiophene. The invention embodies the discovery that certain intermediate sulfur compounds are the most refractory or difficult to remove.

REFERENCES:
patent: 3475327 (1969-10-01), Eng et al.
patent: 3481996 (1969-12-01), Kirk, Jr.
patent: 3551326 (1970-12-01), Egan
patent: 3663427 (1972-05-01), Thomas et al.
patent: 3671419 (1972-06-01), Ireland et al.
patent: 3767564 (1973-10-01), Youngblood et al.
patent: 3827970 (1974-08-01), Whitlew et al.
patent: 4062762 (1977-12-01), Howard
patent: 4092238 (1978-05-01), Iowa

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