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Jet fuel additive concentrate composition and fuel composition and methods thereof

Inactive Publication Date: 2005-12-15
THE LUBRIZOL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] An object of the present invention is to improve the thermal stability of a jet fuel.
[0016] A further object of the present invention is to reduce deposits in a fuel circulation system and combustion system of a jet engine.
[0024] Still another embodiment of this invention is a method to improve the thermal stability of a jet fuel comprising adding to the jet fuel a thermal-stability improving amount of the concentrate composition comprising the solvent, the component (B), the component (C), and the component (D).

Problems solved by technology

Jet fuels are used as a coolant in jet aircraft for various aircraft subsystems including the engine lubricating oil which can raise the bulk fuel temperature to about 220° C. Further, in the combustion system, the fuel can experience temperatures up to about 595° C. As a result of these high temperature conditions, some fuel degradation can occur leading to deposits in the fuel circulation system and combustion system of jet engines.

Method used

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Embodiment Construction

[0026] A jet fuel additive concentrate composition of the present invention comprises (A) a solvent suitable for use in a jet fuel, (B) a composition selected from the group consisting of (1) a reaction product of a hydrocarbyl-substituted succinic acylating agent and an amine, an alcohol, or mixtures thereof wherein the hydrocarbyl substituent of (B)(1) has a number average molecular weight of 600 to 3,000; (2) a polyalkenylthiophosphonate ester; (3) a Mannich reaction product of a hydrocarbyl-substituted phenol, an aldehyde, and an amine; and (4) mixtures thereof; and (C) a composition selected from the group consisting of (5) a metal salt of an oligomeric reaction product of a hydrocarbyl-substituted phenol and an aldehyde; (6) an oligomeric reaction product of a hydrocarbyl-substituted phenol, an aldehyde, and a carboxyl-substituted phenol; and (7) mixtures thereof wherein the solvent is present in the concentrate composition at 20-80 weight %, and each of the compositions for c...

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Abstract

A jet fuel additive concentrate composition comprises a solvent and a combination of components. A fuel composition and methods to improve thermal stability of a jet fuel and to reduce deposits in a jet engine include the jet fuel additive concentrate composition. The improvement in the thermal stability of a jet fuel is synergistic when the combination of components includes a cold-flow improving composition.

Description

[0001] This application claims the benefit of the U.S. Provisional Patent Application No. 60 / 388693 filed 14 Jun. 2002.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to a jet fuel additive concentrate composition, a fuel composition containing a jet fuel and the jet fuel additive concentrate composition, a method that uses the jet fuel additive concentrate composition to improve the thermal stability of a jet fuel, and a method that uses the fuel composition to reduce deposits in a jet engine. [0004] 2. Description of the Related Art [0005] Jet fuels experience extremely high temperatures prior to and during combustion. Jet fuels are used as a coolant in jet aircraft for various aircraft subsystems including the engine lubricating oil which can raise the bulk fuel temperature to about 220° C. Further, in the combustion system, the fuel can experience temperatures up to about 595° C. As a result of these high temperature conditions, ...

Claims

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Application Information

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IPC IPC(8): C10L1/14C10L1/16C10L1/18C10L1/22C10L1/26C10L10/00
CPCC10L1/143C10L10/04C10L1/1616C10L1/195C10L1/1966C10L1/1973C10L1/198C10L1/1981C10L1/221C10L1/224C10L1/238C10L1/2383C10L1/2387C10L1/2683C10L1/1608
Inventor FORESTER, DAVID R.ROBERTS, C. DAVIDMANKA, JOHN S.MALIK, BHARAT B.
Owner THE LUBRIZOL CORP
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