Mineral oils: processes and products – Refining – Sulfur removal
Patent
1998-09-09
2000-05-09
Griffin, Walter D.
Mineral oils: processes and products
Refining
Sulfur removal
208208R, 208237, C10G 2900, C10G 2920
Patent
active
060599626
ABSTRACT:
A product of reduced sulfur content is produced in a multiple stage process from a feedstock which is comprised of a mixture of hydrocarbons and includes sulfur-containing aromatic compounds as unwanted impurities. The first stage involves: (1) subjecting the feedstock to alkylation conditions which are effective to convert a portion of the impurities to higher boiling sulfur-containing products, and (2) separating the resulting products by fractional distillation into a lower boiling fraction and a higher boiling fraction. The lower boiling fraction is comprised of hydrocarbons and is of reduced sulfur content relative to the feedstock. The higher boiling fraction is comprised of hydrocarbons and contains unconverted sulfur-containing aromatic impurities and also the higher boiling sulfur-containing products. Each subsequent stage involves: (1) subjecting the higher boiling fraction from the preceding stage to alkylation conditions which are effective to convert at least a portion of its content of sulfur-containing aromatic compounds to higher boiling sulfur-containing products, and (2) separating the resulting products by fractional distillation into a lower boiling hydrocarbon fraction and a higher boiling fraction which contains higher boiling sulfur-containing alkylation products. The total hydrocarbon product of reduced sulfur content from the process is comprised of the lower boiling fractions from various stages.
REFERENCES:
patent: 2429575 (1947-10-01), Appleby et al.
patent: 2448211 (1948-08-01), Caesar et al.
patent: 2469823 (1949-05-01), Hansford et al.
patent: 2482084 (1949-09-01), Caesar et al.
patent: 2527794 (1950-10-01), Caesar et al.
patent: 2529298 (1950-11-01), Kreuz et al.
patent: 2531280 (1950-11-01), Kreuz
patent: 2563087 (1951-08-01), Vesely
patent: 2570542 (1951-10-01), Gerald et al.
patent: 2677648 (1954-05-01), Lien et al.
patent: 2843639 (1958-07-01), Langlois et al.
patent: 2921081 (1960-01-01), Zimmerschied et al.
patent: 2943094 (1960-06-01), Birch et al.
patent: 2999807 (1961-09-01), Buningh et al.
patent: 3629478 (1971-12-01), Haunschild
patent: 3634534 (1972-01-01), Haunschild
patent: 4171260 (1979-10-01), Farcasiu et al.
patent: 4232177 (1980-11-01), Smith, Jr.
patent: 4242530 (1980-12-01), Smith, Jr.
patent: 4307254 (1981-12-01), Smith, Jr.
patent: 4336407 (1982-06-01), Smith, Jr.
patent: 4775462 (1988-10-01), Imai et al.
patent: 5120890 (1992-06-01), Sachtler et al.
patent: 5171916 (1992-12-01), Le et al.
patent: 5243115 (1993-09-01), Smith, Jr. et al.
patent: 5321181 (1994-06-01), Smith, Jr. et al.
patent: 5336820 (1994-08-01), Owen et al.
patent: 5510568 (1996-04-01), Hearn
patent: 5597476 (1997-01-01), Hearn et al.
patent: 5599441 (1997-02-01), Collins et al.
patent: 5837131 (1998-11-01), Clark
patent: 5863419 (1999-01-01), Huff, Jr. et al.
"Sulfuric Acid For Removing the Different Forms of Sulfur," Oil and Gas Journal, Nov. 10, 1938, p. 45.
W.G. Appleby et al., "Alkylation of Thiophene with Olefins," J. Am. Chem. Soc., vol. 70, (1948), pp. 1552-1555.
G.E. Mapstone, "The Chemistry of the Acid Treatment of Gasoline," Petroleum Refiner, vol. 29, No. 11 (Nov., 1950), pp. 142-150.
Friedel-Crafts and Related Reactions, G.A. Olah, Ed., Interscience Publishers, New York, vol. II, "Alkylation and Related Reactions, Part 1," (1964) pp. 104-109.
Petroleum Processing Handbook, W.F. Bland and R.L. Davidson, Ed., McGraw-Hill Book Company, New York, (1967), pp. 3-119 and 3-120.
F. Asinger, Mono-Olefins, Pergamon Press, Oxford (1968), p. 976.
Alexander Bruce D.
Cayton Roger H.
Huff George A.
Pradhan Vivek R.
Reagan William J.
BP Amoco Corporation
Griffin Walter D.
Kretchmer Richard A.
Sroak Frank J.
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