Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2008-11-10
2011-11-29
Warden, Jill (Department: 1771)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
Reexamination Certificate
active
08066867
ABSTRACT:
Methods are disclosed for the hydrotreating and hydrocracking of highly aromatic distillate feeds such as light cycle oil (LCO) to produce ultra low sulfur gasoline and diesel fuel. Optimization of hydrotreater severity improves the octane quality of the gasoline or naphtha fraction. In particular, the operation of the hydrotreater at reduced severity to allow at least about 20 ppm by weight of organic nitrogen into the hydrocracker feed is shown to lead to these important benefits. Post-treating of the hydrocracker effluent over an additional hydrotreating catalyst bed may be desired to meet specifications for ultra low sulfur fuel components.
REFERENCES:
patent: 3272734 (1966-09-01), MacLaren
patent: 3404085 (1968-10-01), Hamner et al.
patent: 3620962 (1971-11-01), Pfefferle
patent: 3720601 (1973-03-01), Coonradt et al.
patent: 3755147 (1973-08-01), Michelson
patent: 4302323 (1981-11-01), Chen
patent: 4736316 (1988-04-01), Wallman
patent: 4738766 (1988-04-01), Fischer et al.
patent: 0949318 (1999-10-01), None
patent: 1077312 (1967-07-01), None
patent: 1405664 (1975-09-01), None
Yang, H. et al. “Removal of Organic Nitrogen Compounds in LCO Reduce Hydrodesulfurization Severity”,Natl. Center for Upgrading Technology; SPE Intl. Thermal Operations and Heavy Oil Symposium Proceedings(Society of Petroleum Engineers, SPE SPE/PS-CIM/CHOA Intl. Thermal Operations and Heavy Oil Symposium), Calgary, AB 20051101-20051103) 2005/—p. 1-8 (2005) Paper No. 97658.
Hurley, M. et al. “Light Oil: Clean Gasoline” Engelhard Corporation; Flying J; UOP LLC; ExxonMobil Res. and Engineering Co.; Merichem Chemical/Refinery Services; Davison Catalysts; ABB Lummus Global Inc.; Conoco Phillips; Roddey Engineering Services, In.; Ondeo Nalco Energy Service; Aspen Technology; Flint Hills Resources LP; Chevron USA; Packinox Inc. Pall Corp.; ATOFINA Petrochemicals, Inc. Fluor; Kellogg Brown and Root, Inc.; Mustang Engineering;NPRA Questions and Answer Session on Refining and Petrochemical Technology Q and A transcripts: Refining Excellence, Philadelphia, PA 20021015-20021018) 27 p (2002) Abstract Only.
YPF S.A., Argentina, “Clean Fuel Production”International Journal of Hydrocarbon EngineeringV2 N.1 2-4, pp. 6-8 (Jan.-Feb. 1997).
Nat, P.J. et al. “Mild and Conventional Hydrocracking: Process Conditions, Products and Catalysts”Akzo Chemie BV, Kuwait Inst. for Scientific Research et al., Conference(Kuwait Mar. 5-8, 1989) Studies in Surface Science and Catalysis . . . Catalysts in Petroleum Refining 1989 V53 pp. 399-415 (1990).
Abdo Suheil F.
Dziabala Bart
Thakkar Vasant P.
Boyer Randy
Paschall James C.
UOP LLC
Warden Jill
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