ADDITIVE COMPOSITIONS FOR CORRECTING OVERTREATMENT OF CONDUCTIVITY ADDITIVES IN PETROLEUM FUELS
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.