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Title:
LEAD-FREE GASOLINE COMPOSITION AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2005/044959
Kind Code:
A1
Abstract:
A method for producing a lead-free gasoline composition having a sulfur content of 1 mass ppm or less and a research method octane number of 89.0 or more, which comprises a step of subjecting a cracked naphtha fraction exhibiting a temperature for 5 vol % distillation of 25°C or higher and a temperature for 95 vol % distillation of 210°C or lower, having an olefin content of 5 mass % or more and a diene number of 0.3 g/100 g or less to a desulfurization treatment, and a step of a blending step of mixing the above resultant desulfurized cracked naphtha fraction with another gasoline base material; and a lead-free gasoline composition which has a research method octane number of 89.0 or more, exhibits a temperature for 50 vol % distillation of 105°C or lower, has an olefin content of 10 vol % or more and a total sulfur content of 1 mass ppm or less, and has a percentage of a thiophene type sulfur compound in the total sulfur content of 50 mass % or more in terms of sulfur. The above lead-free gasoline composition has a sulfur content of 1 mass % or less and also retains satisfactory driving characteristics.

Inventors:
Araki, Yasuhiro c/o Japan Energy Corporation (17-35 Niizominami 3-chome, Toda-sh, Saitama 26, 33500, JP)
Ishida, Katsuaki c/o Japan Energy Corporation (17-35 Niizominami 3-chome, Toda-sh, Saitama 26, 33500, JP)
Application Number:
PCT/JP2004/016115
Publication Date:
May 19, 2005
Filing Date:
October 29, 2004
Export Citation:
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Assignee:
JAPAN ENERGY CORPORATION (10-1, Toranomon 2-chome Minato-k, Tokyo 01, 10500, JP)
Araki, Yasuhiro c/o Japan Energy Corporation (17-35 Niizominami 3-chome, Toda-sh, Saitama 26, 33500, JP)
Ishida, Katsuaki c/o Japan Energy Corporation (17-35 Niizominami 3-chome, Toda-sh, Saitama 26, 33500, JP)
International Classes:
C10G29/04; C10G45/02; C10G45/04; C10G45/06; C10G45/36; C10G53/08; C10G53/10; C10G55/06; C10L1/00; C10L1/06; (IPC1-7): C10L1/06; C10G29/04; C10G53/08; C10G53/10; C10G55/06; C10L1/00
Domestic Patent References:
Foreign References:
JP2001303070A
JP2003073677A
JP2003301186A
JP2003277768A
US20030213728A1
US6007704A
US6444118B1
US5851382A
JP2003073677A
Other References:
See also references of EP 1686166A1
Attorney, Agent or Firm:
Fujino, Seiya (Toranomon Nakata Bldg. 4F, 7-7 Toranomon 2-chome, Minato-k, Tokyo 01, 10500, JP)
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