Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2007-12-18
2007-12-18
Caldarola, Glenn (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S067000, C208S120010, C208S20800M, C208S211000, C208S299000, C208S303000
Reexamination Certificate
active
10617912
ABSTRACT:
Sulfur is removed from a hydrocarbon fuel via contact with a desulfurization agent; the desulfurization agent is then regenerated (wherein sulfur is released) by exposing it to oxygen. The sulfur removal and regeneration processes each can be carried out at relatively moderate temperatures, e.g., from 300 to 600° C., and pressure, e.g., about 0.79 to about 3.5 MPa; and the desulfurization agent can include a transition metal oxide, such as molybdenum oxide. The process can also include the additional steps of cracking the hydrocarbon, separating high-boiling and low-boiling fractions from the reaction product and contacting the lower-boiling fraction with a secondary desulfurization agent.
REFERENCES:
patent: 2574445 (1951-11-01), Porter et al.
patent: 2618586 (1952-11-01), Hendel
patent: 3063936 (1962-11-01), Pearce et al.
patent: 4179361 (1979-12-01), Michlmayr
patent: 4202865 (1980-05-01), Preston, Jr.
patent: 4246244 (1981-01-01), Fox
patent: 4313820 (1982-02-01), Farha et al.
patent: 4464252 (1984-08-01), Eberly et al.
patent: 4725415 (1988-02-01), Kidd
patent: 4911823 (1990-03-01), Chen et al.
patent: 4977123 (1990-12-01), Flytzani-Stephanopoulos
patent: 5124140 (1992-06-01), Okada et al.
patent: 5130115 (1992-07-01), Fujisou et al.
patent: 5157201 (1992-10-01), Norris
patent: 5254516 (1993-10-01), Gupta et al.
patent: 5360536 (1994-11-01), Nemeth et al.
patent: 5401391 (1995-03-01), Collins et al.
patent: 5494880 (1996-02-01), Siriwardane
patent: 5685890 (1997-11-01), Okada et al.
patent: 5686196 (1997-11-01), Singh et al.
patent: 5807475 (1998-09-01), Kulparathipranja et al.
patent: 5938800 (1999-08-01), Verrill et al.
patent: 6159256 (2000-12-01), Bonville, Jr. et al.
patent: 6184176 (2001-02-01), Khare
patent: 6245221 (2001-06-01), Baird et al.
patent: 6274533 (2001-08-01), Khare
patent: 6299994 (2001-10-01), Towler et al.
patent: 6338794 (2002-01-01), Khare
patent: 6416659 (2002-07-01), Groten et al.
patent: 6454935 (2002-09-01), Lesieur et al.
patent: 6482314 (2002-11-01), Khare
patent: 6558533 (2003-05-01), Schmidt et al.
patent: 6579444 (2003-06-01), Feimer et al.
patent: 2001/0027163 (2001-10-01), Khare
patent: 2003/0032555 (2003-02-01), Dodwell
patent: 2004/0118747 (2004-06-01), Cutler et al.
patent: WO 02/22763 (2002-03-01), None
patent: WO 03/020850 (2003-03-01), None
Brooks, et al., “Desulfurization Over Metal Zeolites”.Sep. Sci. Tech., 25: 1817-1828 (1990).
Gasper-Galvin, et al., “Zeolite-Supported Metal Oxide Sorbents for Hot-Gas Desulfurization”,Ind. Eng. Chem. Res., 37: 4157-4166 (1998).
Jothimurugesan, et al., “Regeneration of Zinc Titanate H2S Sorbents”,Ind. Eng. Chem. Res., 37: 1929-1933 (1998).
Li, et al., “Cu-Cr-O and Cu-Ce-O Regenerable Oxide Sorbents for Hot Gas Desulfurization”,Ind. Eng. Chem. Res., 36: 187-196 (1997).
Sasaoka, et al., “Modification of ZnO-TiO2High-Temperature Desulfurization Sorbent by ZrO2Addition”,Ind. Eng. Chem. Res., 38: 958-963 (1999).
Swisher, et al., “Review of Metals and Binary Oxides as Sorbents for Removing Sulfur from Coal-Derived Gases”,J. Mater. Eng. Perf., 1: 399-408 (1992).
International Search Report for PCT/US2004/021172, mailed Feb. 22, 2005.
Written Opinion of the International Searching Authority, mailed Feb. 22, 2005.
International Preliminary Report on Patentability for PCT/US2004/021172, mailed Jun. 30, 2005.
Fokema Mark D.
Gordon Jennifer P.
Lee Kang P.
Rhine Wendell E.
Ye Neng
Aspen Products Group, Inc.
Caldarola Glenn
Mintz Levin Cohn Ferris Glovsky and Popeo P.C.
Singh Prem C.
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