Method and fuel additive including iron naphthenate
View Patent ↗A combustion additive is used for protecting and improving the operation of diesel fuel combustion systems. The additive contains one or more iron-containing compounds. The additive can be added to the fuel prior to introduction into a combustion chamber or to the exhaust after the combustion chamber. The additive will then enhance the operation of diesel fuel combustions systems by improving, for example, exhaust aftertreatment performance.
1. A combustion additive comprising iron naphthenate and a hydrocarbonaceous solvent, the additive having a flash point greater than about 55° C. and a cloud point less than −40° C.; and a viscosity at 40° C. of no more than 1.70 mm 2 /s.
2. The combustion additive described in claim 1 , wherein the iron concentration in the additive is greater than 15 g/L.
3. The combustion additive described in claim 2 , wherein the iron concentration in the additive is greater than 22 g/L.
4. The combustion additive described in claim 2 , wherein the iron concentration in the additive is approximately 23.6 g/L.
5. The combustion additive described in claim 1 , wherein the flash point of the solvent is about 150° F.
6. The combustion additive described in claim 1 , wherein the solvent is an aromatic solvent.
7. The combustion additive described in claim 1 , wherein the additive is adapted to be added to a diesel fuel.
8. The combustion additive described in claim 1 , wherein the solvent has a boiling range of 150-300° C.
9. The combustion additive described in claim 1 , wherein the solvent has an average molecular weight of 131-133 g/L.
10. The combustion additive described in claim 9 , further wherein the solvent has a viscosity at 25° C. of 1.2 mm 2 /s.
11. The combustion additive described in claim 9 , further wherein the solvent has a density at 15° C. of 0.880-0.910 g/ml.
12. The combustion additive described in claim 1 , wherein the additive has an iron concentration of 22.3 to 25.0 g/L, viscosity at 40° C. of no more than 1.70 mm 2 /s, and a boiling range of solvent of 170-300° C.