US2007175090A1PendingUtilityA1

Fuel compositions

44
Individually held — no corporate assignee on recordPriority: Jul 25, 2005Filed: Jul 25, 2006Published: Aug 2, 2007
Est. expiryJul 25, 2025(expired)· nominal 20-yr term from priority
Inventors:Johannes Pieter HaanJurgen LouisPaul Anthony Stevenson
C10L 1/14C10L 1/026C10L 1/1608C10L 1/1616C10L 1/19
44
PatentIndex Score
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Claims

Abstract

A fuel composition containing a gas oil base fuel, an alkyl levulinate and one or more additional components, each of which components contains one or more aromatic constituents is provided. A method of reducing the phase separation temperature of a fuel composition is described.

Claims

exact text as granted — not AI-modified
1 . A fuel composition comprising a gas oil base fuel, an alkyl levulinate and at least one additional component, each of which component contains one or more aromatic constituents.  
   
   
       2 . The fuel composition of  claim 1  wherein said additional component is present in the amount of 1 to 50% m of the fuel composition.  
   
   
       3 . The fuel composition of  claim 1  wherein the alkyl levulinate is selected from C 2-8  alkyl levulinates.  
   
   
       4 . The fuel composition of  claim 3  wherein the alkyl levulinate is selected from the group consisting of ethyl levulinate, n-propyl levulinate, n-butyl levulinate, n-pentyl levulinate, 2-hexyl levulinate, 2-ethyl hexyl levulinate and mixtures thereof.  
   
   
       5 . The fuel composition of  claim 4  wherein the alkyl levulinate is selected from ethyl levulinate, n-butyl levulinate and/or n-pentyl levulinate.  
   
   
       6 . The fuel composition of  claim 1  wherein said additional component is selected from (i) refinery product streams with aromatics contents higher than that of the base fuel and (ii) aromatic solvents, boiling in the normal temperature range of gas oil.  
   
   
       7 . A method of reducing the phase separation temperature of a fuel composition containing a gas oil base fuel and an alkyl levulinate, said method comprising increasing the level of aromatic constituents in the fuel composition.  
   
   
       8 . A method of reducing the phase separation temperature of a fuel composition containing a gas oil base fuel and an alkyl levulinate, said method comprising the steps of incorporating in the fuel composition one or more additional components, each of which components contains one or more aromatic constituents.  
   
   
       9 . The method of  claim 7  wherein said alkyl levulinate is selected from C 2-8  alkyl levulinates.  
   
   
       10 . The method of  claim 8  wherein said alkyl levulinate is selected from C 2-8  alkyl levulinates.  
   
   
       11 . The method of clam 9 wherein said alkyl levulinate is selected from the group consisting of ethyl levulinate, n-propyl levulinate, n-butyl levulinate, n-pentyl levulinate, 2-hexyl levulinate, 2-ethyl hexyl levulinate and mixtures thereof.  
   
   
       12 . The method of clam 8 wherein said alkyl levulinate is selected from the group consisting of ethyl levulinate, n-propyl levulinate, n-butyl levulinate, n-pentyl levulinate, 2-hexyl levulinate, 2-ethyl hexyl levulinate and mixtures thereof.  
   
   
       13 . The method of  claim 7  wherein said one or more additional components are selected from (i) refinery product streams with aromatics contents higher than that of the base fuel and (ii) aromatic solvents, boiling in the normal temperature range of gas oil.  
   
   
       14 . The method of  claim 8  wherein said one or more additional components are selected from (i) refinery product streams with aromatics contents higher than that of the base fuel and (ii) aromatic solvents, boiling in the normal temperature range of gas oil.  
   
   
       15 . A method of operating a compression ignition engine and/or a vehicle which is powered by such an engine comprising the step of introducing into a combustion chamber of the engine a fuel composition of  claim 1 .  
   
   
       16 . A method of operating a compression ignition engine and/or a vehicle which is powered by such an engine comprising the step of introducing into a combustion chamber of the engine a fuel composition of  claim 2 .  
   
   
       17 . A method of operating a compression ignition engine and/or a vehicle which is powered by such an engine comprising the step of introducing into a combustion chamber of the engine a fuel composition of  claim 3 .  
   
   
       18 . A method of operating a heating appliance provided with a burner comprising the step of supplying to said burner a fuel composition of  claim 1 .  
   
   
       19 . A method of operating a heating appliance provided with a burner comprising the step of supplying to said burner a fuel composition of  claim 2 .  
   
   
       20 . A method of operating a heating appliance provided with a burner comprising the step of supplying to said burner a fuel composition of  claim 3 .  
   
   
       21 . A process for the preparation of a fuel composition comprising the step of blending a gas oil base fuel, an alkyl levulinate and at least one additional component, each of which component contains one or more aromatic constituents.  
   
   
       22 . The process of  claim 21  wherein the additional component is present in the amount of 1 to 50% m of said fuel composition.

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