Additive compositions for correcting overtreatment of conductivity additives in petroleum fuels

Abstract

Disclosed herein are methods for correcting fuel oil compositions having excess conductivity. The oil compositions comprise a Petroleum Based Component, a Conductivity additive and a Conductivity Correcting Additive.

1 ) A fuel oil composition comprising:
 a. a Petroleum Based Component,   b. a Conductivity Additive, and   c. a Conductivity Correcting Additive.   
   
   
       2 ) The fuel oil composition of  claim 1 , wherein said Petroleum Based Component is a middle distillate fuel, a jet fuel, or a Fischer-Tropsch fuel. 
   
   
       3 ) The fuel oil composition of  claim 1 , wherein said Petroleum Based Component comprises less then about 500 ppm by mass of sulfur. 
   
   
       4 ) The fuel oil composition of  claim 1 , wherein said Petroleum Based Component comprises less then about 15 ppm by mass of sulfur. 
   
   
       5 ) The fuel oil composition of  claim 1 , wherein said Conductivity Correcting Additive comprises additives selected from the group consisting of: organic acids, polymeric analogs of organic acids and their ester or amides derivatives. 
   
   
       6 ) The fuel oil component of  claim 5 , wherein said Conductivity Correcting Additive is represented by general formula: 
     
       
         
         
             
             
         
       
     
     wherein;
 R 1  can be alkyl-linear, branched, saturated, unsaturated, C 1-40 ; aromatic, cyclic, polycyclic; 
 R 2  can be alkyl-linear, branched, saturated, unsaturated, C 1-40 ; aromatic, cyclic, polycyclic, H, or analogs of R 3 —NH 2  or R 3 —OH; 
 R 3  can be alkyl-linear, branched, saturated, unsaturated, C 1-40 ; aromatic, cyclic, polycyclic, repeating units based on ethylene, propylene or butylene oxide, or repeating units based on ethylene, propylene or butylene aziridine; 
 R 4  can be alkyl-linear, branched, saturated, unsaturated, C 1-40 ; aromatic, cyclic, polycyclic; H, R 3 —OH; Alcohol; Ester; or an Acid; 
 X can be O, NH, NR 1 , S, or P; 
 Y can be 1-6; and 
 Z can be organic functional groups (H, alcohols, aldehydes, ketones, acids, esters, amides, amines, imides, ester amines, amido amines, imido amines, imidazolines, carbamates, ureas, imines, and enamines) present on the R 1  hydrocarbon backbone. 
 
   
   
       7 ) The fuel oil composition of  claim 1 , wherein said Conductivity Correcting Additive is present in the fuel between about 10 to about 10,000 mg/l of fuel. 
   
   
       8 ) The fuel oil composition of  claim 1 , wherein said Conductivity Correcting Additive is present in the fuel between about 50 to about 1000 mg/l of fuel. 
   
   
       9 ) The fuel oil composition of  claim 1 , wherein said Conductivity Correcting Additive is present in the fuel between about 50 to about 300 mg/l of fuel. 
   
   
       10 ) The fuel oil composition of  claim 1 , wherein said Conductivity Additive comprises additives selected from the group consisting of: alpha-olefin-sulfone copolymer such as polysulphone and quaternary ammonium salt, polysulphone and quaternary ammonium salt amine/epichlorhydrin adduct dinonylnaphthylsulphonic acid, copolymer of an alkyl vinyl monomer and a cationic vinyl monomer, alpha-olefin-maleic anhydride copolymer class, methyl vinyl ether-maleic anhydride copolymers and amines, alpha-olefin-acrylonitrile, alpha-olefin-acrylonitrile copolymers and polymeric polyamines, and copolymer of an alkylvinyl monomer and a cationic vinyl monomer and polysulfone, a ethoxylated quat, hydrocarbyl monoamine or hydrocarbyl-substituted polyalkylenieamine, acrylic-type ester-acrylonitrile copolymers and polymeric polyamines, and diamine succinamide reacted with an adduct of a ketone and SO 2 . 
   
   
       11 ) The fuel oil composition of  claim 1 , wherein said Conductivity Additive is present in the fuel between about 0.01 to about 100 mg/l of fuel. 
   
   
       12 ) The fuel oil composition of  claim 1 , wherein said Conductivity Additive is present in the fuel between about 0.1 to about 15 mg/l of fuel. 
   
   
       13 ) The fuel oil composition of  claim 1 , wherein said Conductivity Additive is present in the fuel between about 0.3 to about 5 mg/l of fuel. 
   
   
       14 ) A method of controlling the conductivity of a hydrocarbon fuel or solvent by metering into the fuel said Conductivity Correcting Additive of  claim 5 . 
   
   
       15 ) The method of  claim 14 , wherein said Conductivity Correcting Additive and a Conductivity Additive are metered together. 
   
   
       16 ) The method of  claim 14 , wherein said Conductivity Correcting Additive and a Conductivity Additive are metered separately. 
   
   
       17 ) The fuel composition of  claim 1  further comprising additives selected from the group consisting of (a) low temperature operability/cold flow additives, (b) corrosion inhibitors, (c) cetane improvers, (d) detergents, (e) lubricity improvers, (f) dyes and markers, (g) anti-icing additives, (h) demulsifiers/anti haze additives, (i) antioxidants, (j) metal deactivators, (k) biocides, and (l) thermal stabilizers. 
   
   
       18 ) A method of operating an internal combustion engine such as a compression-ignition engine using as fuel for the engine a fuel oil composition as recited in  claim 1 . 
   
   
       19 ) The method of  claim 18 , wherein said fuel oil is a middle distillate fuel containing less than 500 ppm by mass of sulfur.