Continuous in-situ combination process for upgrading heavy oil

Details Continuous in-situ combination process for upgrading heavy oil Continuous in-situ combination process for upgrading heavy oil

1996-10-21

1999-08-10

Myers, Helane

Mineral oils: processes and products

Refining

Sulfur removal

208227, 208230, C10G 1902

Patent

active

059354216

ABSTRACT:
The invention relates to an integrated, continuous process for the removal of organically bound sulfur (e.g., mercaptans, sulfides and thiophenes) comprising the steps of contacting a heavy oil, sodium hydroxide, hydrogen and water at a temperature of from about 380.degree. C. to 450.degree. C. to partially desulfurize the heavy oil and to form sodium sulfide, contacting said sodium sulfide via steam stripping to convert the sodium sulfide to sodium hydroxide and the sulfur recovered as hydrogen sulfide. The sodium hydroxide is recirculated for reuse. The partially desulfurized, dewatered heavy oil is treated with sodium metal under desulfurizing conditions, typically at a temperature of from about 340.degree. C. to about 450.degree. C., under a hydrogen pressure of at least about 50 psi to essentially desulfurize the oil, and form sodium sulfide. Optionally, the sodium salt generated can be regenerated to sodium metal using regeneration technology. The process advantageously produces essentially sulfur-free product oils having reduced nitrogen, oxygen and metals contents and reduced viscosity, density, molecular weight and heavy ends.

REFERENCES:
patent: 2772211 (1956-11-01), Hawkes et al.
patent: 2950245 (1960-08-01), Thomsen
patent: 3164545 (1965-01-01), Mattox
patent: 3185641 (1965-05-01), Cowden
patent: 3449242 (1969-06-01), Mattox et al.
patent: 3785965 (1974-01-01), Welty
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: 4003823 (1977-01-01), Baird, Jr. et al.
patent: 4003824 (1977-01-01), Baird, Jr. et al.
patent: 4007109 (1977-02-01), Baird et al.
patent: 4007110 (1977-02-01), Bearden, Jr.
patent: 4076613 (1978-02-01), Bearden, Jr.
patent: 4127470 (1978-11-01), Baird, Jr. et al.
patent: 4163043 (1979-07-01), Dezael et al.
patent: 4310049 (1982-01-01), Kalvinskas et al.
patent: 4343323 (1982-08-01), Kessick et al.
patent: 4437980 (1984-03-01), Heredy et al.
patent: 4566965 (1986-01-01), Olmstead
patent: 4927524 (1990-05-01), Rodriguez et al.
patent: 5160045 (1992-11-01), Falkiner et al.
Adzhiev et al., Neft. Khoz., 1986, (10), 53-57.
Shul'ga et al., Tr. Grozen. Neft. Nauch., 1972, (25), 19-26.
Burger et al., "Symposium on Progress in Processing Synthetic Crudes and Resids," ACS (Aug. 24-29, 1975).
Yamaguchi et al., "Desulfurization of Heavy Oil and Preparation of Activated Carbon by Means of Coking Procedure," Chibakogyodaiku Kenkyui Hokoku No. 21, p. 115 (Jan. 30, 1976).
LaCount et al., "Oxidation of Dibenzothiophene and Reaction of Dibenzothiophene 5,5-Dioxide with Aqueous Alkali, " Journal of Organic Chemistry, 42 (16), 1977.

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