Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2006-12-26
2006-12-26
Caldarola, Glenn (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S219000, C208S222000, C208S236000, C208S244000, C208S25400R, C208S25400R, C208S255000, C208S256000, C208S295000, C208S299000, C208S20800M
Reexamination Certificate
active
07153414
ABSTRACT:
A process for the upgrading of raw hydrocarbon streams rich in heteroatomic polar compounds and/or unsaturated moieties involving the extractive oxidation of sulfur, nitrogen, conjugated dienes and other unsaturated compounds from said streams, the said process comprising treating said streams with a peroxide solution/organic acid couple and an iron oxide catalyst which is a limonite ore, under an acidic pH, atmospheric pressure and ambient or higher temperature. As a result of the reaction, the oxidized heteroatomic compounds, having strong affinity for the aqueous slurry phase, are extracted into said aqueous phase, while the oxidized hydrocarbon is separated from catalyst by decanting, neutralizing, water washing and drying, the resulting end product being a hydrocarbon stream from which have been removed 90% or more of total nitrogen compounds and basic nitrogen up to 99.7%, both calculated as mass contents.
REFERENCES:
patent: 2591946 (1952-04-01), Krause
patent: 2804473 (1957-08-01), Phillips
patent: 3847800 (1974-11-01), Guth et al.
patent: 4311680 (1982-01-01), Frech
patent: 4485007 (1984-11-01), Tam et al.
patent: 5755977 (1998-05-01), Gurol
patent: 5910440 (1999-06-01), Grossman et al.
patent: 5917049 (1999-06-01), Suverkropp
patent: 6126838 (2000-10-01), Huang
patent: 6140294 (2000-10-01), Delroisse
patent: 6544409 (2003-04-01), De Souza
Chapados. Doug. et al., “Desulfurization by selective oxidation and extraction of sulfur-containing compounds to economically achieve ultra-low proposed diesel fuel sulfur requirements” NRPA Annual Meeting. Mar. 26-28, 2000.
Valentine. Richard C., et al., “Iron Oxide Surface Catalyzed Oxidation of Quinoline by Hydrogen Peroxide.” Journal of Env. Ironmental Engineering. Jan. 1998. vol. 124. 31-38.
Okui. Toshiaki et al., “Hydrocracking of Marlim Vacuum Residue Using Slurry Bed Reactor.” Proceedings of the International Symposium on Utilization of Super-Heavy Hydrocarbon Resources. Japan Institute of Energy 2000. 21-27.
Kaneko. Takao et al., “Transformation of Iron Catalyst to the Active Phase in Coal Liquefaction” Energy & Fuels 1998. 12. 897-904.
Walling. Cheves “Fenton's Reagent Revisited” Accounts of Chemical Research vol. 8. 1975.#125-131.
Brown. K M. et al., “Low-Cost way to treat high-mercaptan gasoline.” The Oil and Gas Journal, 1959. 57.#44.#73-78.
Caldarola Glenn
Petroleo Brasileiro S.A.--Petrobras
Singh Prem C.
Sughrue & Mion, PLLC
LandOfFree
Process for the upgrading of raw hydrocarbon streams does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the upgrading of raw hydrocarbon streams, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the upgrading of raw hydrocarbon streams will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3660895