Cold flow response of diesel fuels

Abstract

The invention provides A blend of FT derived diesel, crude derived diesel, and CFPP improving additive, wherein the FT diesel is from 1 vol % to 50 vol % of the blend, said blend having a CFPP of below −18° C. The invention extends to use of FT diesel as a blendcomponent for a compression ignition fuel blend, said blend including the FT diesel, a crude derived diesel fuel and a CFPP improver additive, wherein the FT diesel is from 1 vol % to 50 vol % of the blend, which blend has a CFPP of below −20° C.

1 - 13 . (canceled) 
   
   
       14 . A blend comprising a Fischer-Tropsch derived diesel, a crude derived diesel, and a cold filter plugging point improving additive, wherein the Fischer-Tropsch derived diesel comprises from 1 vol. % to 50 vol. % of the blend, wherein the blend has a cold filter plugging point of below −18° C., and wherein the Fischer-Tropsch derived diesel has a >C19 wax content of less than 3.2 mass %. 
   
   
       15 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel has a >C19 wax content of less than 1.6 mass %. 
   
   
       16 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel comprises from 5 vol. % to 40 vol. % of the blend, and wherein the blend has a cold filter plugging point of below −20° C. 
   
   
       17 . The blend of  claim 16 , wherein the Fischer-Tropsch derived diesel comprises from 5 vol. % to 20 vol. % of the blend 
   
   
       18 . The blend of  claim 14 , wherein the cold filter plugging point improving additive comprises from 50 ppm to 1000 ppm of the blend. 
   
   
       19 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel has a cold filter plugging point of from −5° C. to −18° C. 
   
   
       20 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel has a cold filter plugging point of −18° C., a cloud point of −17.4° C., a pour point of −21° C., a density at 15° C. of 767.8 kg/m 3 , and boiling point characteristics comprising: 
     
       
         
               
               
               
             
                   
                   
               
                   
                 Initial Boiling Point (° C.) 
                 166° C. 
               
                   
                  5% (° C.) 
                 189° C. 
               
                   
                 10% (° C.) 
                 196° C. 
               
                   
                 20% (° C.) 
                 206° C. 
               
                   
                 30% (° C.) 
                 218° C. 
               
                   
                 40% (° C.) 
                 233° C. 
               
                   
                 50% (° C.) 
                 247° C. 
               
                   
                 60% (° C.) 
                 262° C. 
               
                   
                 70% (° C.) 
                 277° C. 
               
                   
                 80% (° C.) 
                 293° C. 
               
                   
                 90% (° C.) 
                 312° C. 
               
                   
                 95% (° C.) 
                 326° C. 
               
                   
                 Final Boiling Point (° C.) 
                 334° C. 
               
                   
                 Final Boiling Point −90% (° C.) 
                  22° C. 
               
                   
                 90%-20% (° C.) 
                 106° C. 
               
                   
                   
               
           
              
             
             
              
              
              
              
              
              
              
              
              
              
              
              
              
              
              
              
             
          
         
       
     
   
   
       21 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel has a T90-T20 of from 120° C. to 105° C. 
   
   
       22 . The blend of  claim 14 , wherein the Fischer-Tropsch derived diesel is a winter diesel conforming to a cold filter plugging point of less than −10° C. 
   
   
       23 . The blend of  claim 14 , wherein the crude derived diesel has a cold filter plugging point of from −5° C. to −15° C. 
   
   
       24 . The blend of  claim 14 , wherein the crude derived diesel has a T90-T20 of from 60° C. to 130° C. 
   
   
       25 . The blend of  claim 14 , wherein the crude derived diesel has an FBP-T90 of from 23° C. to 35° C. 
   
   
       26 . The blend of  claim 14 , wherein the cold filter plugging point improver additive comprises from 50 ppm to 1000 ppm of the blend. 
   
   
       27 . A compression ignition fuel blend component, the blend component comprising from 1 vol. % to 50 vol. % Fischer-Tropsch derived diesel, a narrow cut crude oil derived diesel fuel and a cold filter plugging point improver additive, wherein the blend component has a cold filter plugging point of below −20° C. when the Fischer-Tropsch derived diesel comprises about 20 vol. % of the blend component and the cold filter plugging point improver additive comprises less than 500 ppm of the blend component. 
   
   
       28 . The compression ignition fuel blend component of  claim 27 , wherein the blend component comprises from 5 vol. % to 40 vol. % Fischer-Tropsch derived diesel 
   
   
       29 . The compression ignition fuel blend component of  claim 27 , wherein the cold filter plugging point improver additive comprises from 50 ppm to 1000 ppm of the blend component. 
   
   
       30 . A compression ignition fuel blend component, the blend component comprising from 1 vol. % to 50 vol. % Fischer-Tropsch derived diesel, a wide cut crude oil derived diesel fuel and a cold filter plugging point improver additive, wherein the blend component has a cold filter plugging point of below −30° C. when the Fischer-Tropsch derived diesel comprises about 20 vol. % of the blend component and the cold filter plugging point improver additive comprises less than 500 ppm of the blend component. 
   
   
       31 . The compression ignition fuel blend component of  claim 30 , wherein the blend component comprises from 5 vol. % to 40 vol. % Fischer-Tropsch derived diesel 
   
   
       32 . The compression ignition fuel blend component of  claim 30 , wherein the cold filter plugging point improver additive comprises from 50 ppm to 1000 ppm of the blend component.