Process for desulfurization comprising a stage for selective...

Details Process for desulfurization comprising a stage for selective... Process for desulfurization comprising a stage for selective...

2007-09-18

2007-09-18

Caldarola, Glenn (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With subsequent treatment of products

C208S144000, C208S20800M, C208S211000, C208S237000, C208S255000

Reexamination Certificate

active

10705868

ABSTRACT:
For desulfurization of a hydrocarbon-containing feedstock, at least one stage for selective hydrogenation of diolefins present in the initial hydrocarbon feedstock, in the presence of a catalyst of group VIII of the period table, and a stage for extraction by a solvent of the resultant hydrogenated fraction under conditions that provide at least two fractions:a raffinate that comprises for the most part olefins, paraffins and naphthenes and a reduced amount of sulfur-containing compounds that are contained in the initial feedstock,a fraction that contains the majority of the aromatic hydrocarbons and the majority of the sulfur-containing compounds contained in the initial feedstock.

REFERENCES:
patent: 3200165 (1965-08-01), Wirth et al.
patent: 3309307 (1967-03-01), Bryant, Jr.
patent: 3457163 (1969-07-01), Parker
patent: 6358402 (2002-03-01), Schucker
patent: 6551502 (2003-04-01), Lee et al.
patent: 2002/0153280 (2002-10-01), Didillon et al.
patent: 1077247 (2001-02-01), None
patent: 88312 (1967-01-01), None
patent: 07242570 (1996-01-01), None
Patent Abstracts of Japan 07242570, publication date Sep. 19, 1995.

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