Desulfurization of petroleum streams using metallic sodium

Mineral oils: processes and products – Refining – Sulfur removal

Reexamination Certificate

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Details

C208S014000, C208S143000, C208S209000, C208S230000, C208S235000

Reexamination Certificate

active

10826621

ABSTRACT:
The invention is a method of removing sulfur from a hydrocarbon feed using the steps of dissolving metallic sodium in a solvent and combining the sodium/solvent solution with a liquid hydrocarbon feed containing an organosulfur species. The pressure of combination is above the vapor pressure of the solvent. The combined hydrocarbon feed and solvent solution are placed in a low pressure environment to vaporize the solvent. The resulting stream is combined with hydrogen gas and this stream is heated and pressurized to form a liquid hydrocarbon product containing sodium sulfide. This product is then cooled, and the sodium sulfide is extracted.

REFERENCES:
patent: 2309651 (1943-01-01), Birkhimer et al.
patent: 3787315 (1974-01-01), Bearden, Jr. et al.
patent: 3788978 (1974-01-01), Bearden, Jr. et al.
patent: 3791966 (1974-02-01), Bearden, Jr.
patent: 3976559 (1976-08-01), Bearden, Jr. et al.
patent: 4003824 (1977-01-01), Baird, Jr. et al.
patent: 4017381 (1977-04-01), Baird et al.
patent: 4076613 (1978-02-01), Bearden, Jr.
patent: 4123350 (1978-10-01), Baird, Jr. et al.
patent: 5948242 (1999-09-01), Ohsol et al.
patent: 5985137 (1999-11-01), Ohsol et al.
patent: 6210564 (2001-04-01), Brons et al.
patent: 6274533 (2001-08-01), Khare
patent: 6338794 (2002-01-01), Khare
patent: 6402939 (2002-06-01), Yen et al.
patent: 6402940 (2002-06-01), Rappas
patent: 6482314 (2002-11-01), Khare
patent: 6500219 (2002-12-01), Gunnerman
patent: 2002/0172871 (2002-11-01), Schucker
Z. Yu, et al, “Desulfurization of Organosulfur Compounds with Lithium & Sodium,” Energy & Fuels, 1999, vol. 13, No. 1, pp. 23-28.
U. Schindewolf, “Formation and Properties of Solvated Electrons,” Angew. Chem. Internat. Edit., 1968, vol. 7, No. 3, pp. 190-203.
H. W. Sternberg, et al, “Reaction of Sodium with Dibenzothiophene. A Method for Desulfurization of Residua,” Ind. Eng. Chem., Process Des. Develop., 1974, vol. 13, No. 4, pp. 433-436.

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