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: 30 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 70 vol % of a mineral jet boiling range fraction, the 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 2.0 wt % or more of C 17 -C 18  hydrocarbons. 
     
     
         2 . The composition of  claim 1 , wherein the mineral jet boiling range fraction comprises a conventional jet fuel or kerosene component. 
     
     
         3 . The composition of  claim 1 , wherein the composition comprises 50 vol % to 99 vol % of the isoparaffinic blend component. 
     
     
         4 . The composition of  claim 1 , wherein the composition comprises 30 vol % to 95 vol % of the isoparaffinic blend component. 
     
     
         5 . The composition of  claim 1 , wherein the composition comprises 50 vol % to 90 vol % of the isoparaffinic blend component and 10 wt % to 50 wt % of the mineral jet boiling range fraction. 
     
     
         6 . The composition of  claim 5 , wherein the composition produces a smaller wear scar diameter under the procedure of ASTM D5001 than a wear scar diameter produced by the mineral jet boiling range fraction under the procedure of ASTM D5001. 
     
     
         7 . The composition of  claim 6 , wherein the wear scar diameter produced by the composition is 10% or more smaller than the wear scar diameter produced by the mineral jet boiling range fraction. 
     
     
         8 . The composition of  claim 1 , wherein the composition comprises a ratio of Hd hydrogens to Hc 2  hydrogens of 1.01 to 2.00. 
     
     
         9 . The composition of  claim 1 , wherein the composition comprises a ratio of Hd hydrogens to Hc 2  hydrogens of 1.01 to 1.35, the composition optionally comprising 40 vol % to 70 vol % of the isoparaffinic blend component. 
     
     
         10 . The composition of  claim 1 , wherein the isoparaffinic blend component contains 1.0 wt % or less of aromatics, or wherein the composition comprises 20 wt % or less of aromatics, or a combination thereof. 
     
     
         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 0.1 wt % to 1.0 wt % of C 19+  hydrocarbons. 
     
     
         13 . 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. 
     
     
         14 . The composition of  claim 1 , wherein the composition comprises 3.0 wt % or less of C 8−  compounds. 
     
     
         15 . 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. 
     
     
         16 . The composition of  claim 1 , wherein the C 12  hydrocarbons in the isoparaffinic blend component comprise 1.5% or less of quaternary carbons, relative to the total number of carbons in the C 12  hydrocarbons of the isoparaffinic blend component. 
     
     
         17 . A blended jet boiling range composition comprising: 1.0 vol % to 20 vol % of an isoparaffinic blend component, and 80 vol % to 99 vol % of a mineral jet boiling range fraction, the isoparaffinic blend component comprising 80 wt % or more of isoparaffins, 5.0 wt % or less of olefins, and 5.0 wt % or less of C 19+  hydrocarbons, the composition comprising 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. 
     
     
         18 . The composition of  claim 17 , wherein the blended jet boiling range composition comprises 1.0 wt % to 10 wt % of the isoparaffinic blend component. 
     
     
         19 . The composition of  claim 17 , wherein the blended jet boiling range composition comprises 5.0 wt % to 15 wt % of the isoparaffinic blend component. 
     
     
         20 . The composition of  claim 17 , wherein the composition comprises a ratio of Hd hydrogens to Hc 2  hydrogens of 0.9 to 1.1. 
     
     
         21 . The composition of  claim 17 , wherein the isoparaffinic blend component contains 1.0 wt % or less of aromatics. 
     
     
         22 . The composition of  claim 17 , wherein the isoparaffinic blend component comprises 8.0 wt % or less of compounds different from isoparaffins and iso-olefins. 
     
     
         23 . The composition of  claim 17 , wherein the composition comprises 0.1 wt % to 1.0 wt % of C 19+  hydrocarbons. 
     
     
         24 . The composition of  claim 17 , 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. 
     
     
         25 . The composition of  claim 17 , wherein the composition comprises 3.0 wt % or less of C 8−  compounds. 
     
     
         26 . The composition of  claim 17 , 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. 
     
     
         27 . The composition of  claim 17 , wherein the C 12  hydrocarbons in the isoparaffinic blend component comprise 1.5% or less of quaternary carbons, relative to the total number of carbons in the C 12  hydrocarbons of the isoparaffinic blend component. 
     
     
         28 . 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 mineral jet boiling range fraction, the 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).