Stable olefinic, low sulfur diesel fuels

Details Stable olefinic, low sulfur diesel fuels Stable olefinic, low sulfur diesel fuels

2007-02-20

2007-02-20

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Liquid fuels

Organic nitrogen compound containing

C044S432000, C044S450000

Reexamination Certificate

active

10355284

ABSTRACT:
The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.

REFERENCES:
patent: 3149933 (1964-09-01), Ley et al.
patent: 4320020 (1982-03-01), Lange
patent: 4320021 (1982-03-01), Lange
patent: 4347148 (1982-08-01), Davis
patent: 4386939 (1983-06-01), Lange
patent: 4568663 (1986-02-01), Mauldin
patent: 5506272 (1996-04-01), Benham et al.
patent: 5689031 (1997-11-01), Berlowitz et al.
patent: 5766274 (1998-06-01), Wittenbrink et al.
patent: 6162956 (2000-12-01), Berlowitz et al.
patent: 6180842 (2001-01-01), Berlowitz et al.
patent: 6274029 (2001-08-01), Wittenbrink et al.
patent: 6296757 (2001-10-01), Wittenbrink et al.
patent: 6605206 (2003-08-01), Johnson et al.
patent: 6872752 (2005-03-01), O'Rear et al.
patent: 6933323 (2005-08-01), O'Rear et al.
patent: 2003/0199719 (2003-10-01), Johnson et al.
patent: 0609079 (1994-08-01), None
patent: 98/05740 (1998-02-01), None
patent: 02/102944 (2002-12-01), None
Vardi J. et al. “Peroxide Formation in Low Sulfur Automotive Diesel Fuels” SAE paper 920826 (1992).
Pedley, J.F., et al., “Storage stability of petroleum-derived diesel fuel”,Fuel68:27-31 (1989).
United Kingdom Search Report dated Jun. 29, 2004.
U.S. Appl. No. 10/355,280, O'Rear, et al.,Stable Olefinic, Low Sulfur Diesel Fuel, filed on Jan. 31, 2003.
Shah, P.P., “Upgrading of Light Fischer-Tropsch Products, Final Report”, U.S. Dept. of Energy, DE91011315, Nov. 30, 1990.
Shah, P.P., et al., “Fischer-Tropsch Wax Characterization and Upgrading”, Final Report, DOE contract No. AC22-85PC80017, Jun. 6, 1988.
Netherlands Search Report dated Jan. 4, 2005.
Robertson, S.D. et al. “Effect of automotive gas oil composition on elastomer behaviour”, SAE Fuels & Lubricants Meeting (Baltimore Oct. 17-20, 1994) SAE Special Publication N. SP-1056 85-104 (1994).

Affiliated with

Also associated with

Rating

Stable olefinic, low sulfur diesel fuels does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stable olefinic, low sulfur diesel fuels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stable olefinic, low sulfur diesel fuels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3835628