US 7,320,748 B2
Thermally stable jet prepared from highly paraffinic distillate fuel component and conventional distillate fuel component
Gregory Hemighaus, Richmond, Calif. (US); and Dennis J. O'Rear, Petaluma, Calif. (US)
Assigned to Chevron U.S.A. Inc., San Ramon, Calif. (US)
Filed on Sep. 13, 2004, as Appl. No. 10/938,565.
Application 10/938565 is a division of application No. 10/000586, filed on Oct. 19, 2001, granted, now 6,846,402.
Prior Publication US 2007/0278133 A1, Dec. 06, 2007
Int. Cl. C10L 1/04 (2006.01)
U.S. Cl. 208—14  [208/15; 208/17] 27 Claims
 
1. A process for preparing a stable distillate fuel blend comprising at least two components having antagonistic properties with respect to one another, said distillate fuel blend being useful as a fuel or as a blending component of a fuel suitable for use in a turbine engine which comprises the steps of:
(a) blending at least one non-virgin petroleum derived distillate fuel component and at least one highly paraffinic distillate fuel component having a paraffin content of not less than 70 percent by weight and a branching index within the range from about 0.5 to about 3, wherein the components have antagonistic properties with respect to one another;
(b) determining the thermal stability of the blend of step (a) using a suitable standard analytical method;
(c) modifying the blending of step (a) to achieve a pre-selected stability value as determined by the analytical method of step (b); and
(d) recovering a distillate fuel blend that is characterized by having a breakpoint value of 260° C. or greater as determined by ASTM D3241.