Isoparaffinic kerosene compositions

Abstract

Jet boiling range compositions are provided that include at least a portion of an isoparaffinic blend component, along with a method for making such a blend component. The highly isoparaffinic nature of the blend component can allow the isoparaffinic blend component to be used in combination with both conventional/mineral jet fuel boiling range fractions as well as non-traditional feeds (such as Fischer-Tropsch fractions) to form jet fuel fractions and/or jet fuel blending component fractions.

What is claimed is: 
     
         1 . A blended jet boiling range composition comprising:
 1.0 vol % to 99 vol % of an isoparaffinic blend component containing 80 vol % or more of isoparaffins, 5.0 vol % or less of olefins, and 5.0 vol % or less of C 19+  hydrocarbons; and   1.0 vol % to 99 vol % of a synthetic jet boiling range fraction, the synthetic jet boiling range fraction
 a) containing less than 80 wt % isoparaffins, 
 b) having a ratio of Hd hydrogens to Hc 2  hydrogens of 1.6 or more, 
 c) having a ratio of Hd hydrogens to Hc 2  hydrogens of 1.0 or less, 
 d) a combination of a) and b), or 
 e) a combination of a) and c), 
   wherein the blended jet boiling range composition comprising a T10 distillation point of 205° C. or less, a final boiling point of 300° C. or less, a freeze point of −40° C. or lower, and 1.0 wt % or more of C 17 -C 18  hydrocarbons.   
     
     
         2 . The composition of  claim 1 , wherein the composition comprises 30 vol % to 99 vol % of the isoparaffinic blend component, the composition optionally comprising 1.5 wt % or more of C 17 -C 18  hydrocarbons. 
     
     
         3 . The composition of  claim 1 , wherein the synthetic jet boiling range fraction comprises a bio-derived fraction, a Fischer-Tropsch fraction, or a combination thereof. 
     
     
         4 . The composition of  claim 1 , wherein the synthetic jet boiling range fraction comprises a jet boiling range fraction derived from a non-conventional source. 
     
     
         5 . The composition of  claim 1 , wherein the composition comprises 10 vol % or more of the isoparaffinic blend component, 10 vol % or more of the synthetic jet boiling range fraction, or a combination thereof. 
     
     
         6 . The composition of  claim 1 , wherein the composition further comprises 1.0 wt % or more of a conventional jet fuel, a mineral jet boiling range fraction, or a combination thereof. 
     
     
         7 . The composition of  claim 1 , wherein the composition comprises a ratio of Hd hydrogens to Hc 2  hydrogens of 1.10 to 2.20. 
     
     
         8 . The composition of  claim 1 , wherein the composition comprises a ratio of Hd hydrogens to Hc 2  hydrogens of 0.50 to 1.0. 
     
     
         9 . The composition of  claim 1 , wherein the isoparaffinic blend component contains 1.0 vol % or less of aromatics, or wherein the composition comprises 20 wt % or less of aromatics, or a combination thereof. 
     
     
         10 . The composition of  claim 1 , wherein the composition comprises 0.1 wt % to 1.0 wt % of C 19+  hydrocarbons. 
     
     
         11 . The composition of  claim 1 , wherein the isoparaffinic blend component comprises 8.0 wt % or less of compounds different from isoparaffins and iso-olefins. 
     
     
         12 . The composition of  claim 1 , wherein the composition comprises a fuel that satisfies the specifications for a jet fuel in accordance with at least one of ASTM D1655, UK Ministry of Defence Standard 91-091, and Canadian General Standards Board 3.23. 
     
     
         13 . The composition of  claim 1 , wherein the composition comprises 3.0 wt % or less of C 8 -compounds. 
     
     
         14 . The composition of  claim 1 , wherein the isoparaffinic blend component comprises a T10 distillation point of 205° C. or less, a final boiling point of 300° C. or less, and a freeze point of −40° C. or lower. 
     
     
         15 . A blended jet boiling range composition comprising:
 1.0 vol % to 99 vol % of an isoparaffinic blend component containing 80 wt % or more of isoparaffins, 5.0 wt % or less of olefins, and 5.0 wt % or less of C 19+  hydrocarbons; and   1.0 vol % to 99 vol % of a synthetic jet boiling range fraction, the synthetic jet boiling range fraction
 a) containing less than 80 wt % isoparaffins, 
 b) having a ratio of Hd hydrogens to Hc 2  hydrogens of 1.6 or more, 
 c) having a ratio of Hd hydrogens to Hc 2  hydrogens of 1.0 or less, 
 d) a combination of a) and b), or 
 e) a combination of a) and c), 
   the blended jet boiling range composition comprising a T10 distillation point of 205° C. or less, a final boiling point of 300° C. or less, a freeze point of −40° C. or lower, and i) 10 wt % or more of C 9  hydrocarbons, ii) a flash point of 50° C. or higher, or iii) a combination of i) and ii).   
     
     
         16 . The composition of  claim 15 , wherein the composition comprises 1.0 vol % to 30 vol % of the isoparaffinic blend component. 
     
     
         17 . The composition of  claim 15 , wherein the composition comprises 10 vol % or more of the isoparaffinic blend component, 10 vol % or more of the synthetic jet boiling range fraction, or a combination thereof. 
     
     
         18 . The composition of  claim 15 , wherein the composition further comprises 1.0 wt % or more of a conventional jet fuel, a mineral jet boiling range fraction, or a combination thereof. 
     
     
         19 . The composition of  claim 15 , wherein the isoparaffinic blend component contains 1.0 vol % or less of aromatics, or wherein the composition comprises 20 wt % or less of aromatics, or a combination thereof. 
     
     
         20 . The composition of  claim 15 , wherein the isoparaffinic blend component comprises 8.0 wt % or less of compounds different from isoparaffins and iso-olefins.