Synergistic Fuel Stabilizer Mixture Combating Oxidation and Thermal Degradation
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Solution Overview
Problem
There is a need for improved stabilizers that can effectively protect turbine fuels and lubricant compositions from the detrimental effects of light, oxygen, and heat, particularly in extreme thermal conditions, while also reducing deposits in fuel and combustion systems.
Innovation Solution
A synergistic mixture comprising compounds with specific structural elements and sulfur-containing organic compounds with antioxidant action, which work together to provide enhanced protection against light, oxygen, and heat, improving thermal stability and reducing deposits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional stabilizers are used to protect turbine fuels against light, oxygen and heat, then protection against oxidation is achieved, but thermal stability under extreme conditions deteriorates
Solution Approach 1:
The patent applies the composite materials principle by combining two different stabilizer compounds (compound I and compound II) into a synergistic mixture. Compound I contains a phenolic structure with antioxidant properties, while compound II provides complementary stabilization mechanisms. Together, they form a composite stabilizer system that delivers both oxidation protection and thermal stability under extreme conditions, resolving the contradiction between these two requirements.
Solution Approach 2:
The patent employs parameter changes by optimizing the molecular structure parameters of the stabilizer compounds. Compound I features specific substituents (R1-R6) that can be varied to tune the balance between oxidation resistance and thermal stability. By adjusting these structural parameters, the stabilizer maintains effectiveness across the wide temperature range encountered in turbine fuel applications, from ambient to combustion temperatures.
2Object-generated harmful factors
If stabilizers are added to reduce deposits in fuel circuit and combustion system, then deposit formation is reduced, but complexity of stabilizer composition increases
Solution Approach 1:
The patent applies the taking out principle by separating the stabilizer function into two distinct compounds with specialized roles. Compound I primarily addresses oxidation and deposit prevention through its phenolic structure, while compound II provides complementary anti-deposit properties. This separation allows each compound to be optimized for its specific function, reducing the overall complexity compared to a single multi-functional stabilizer while effectively addressing deposit formation.
3Device complexity
If single stabilizer compounds are used to protect against light, oxygen and heat, then simplicity of composition is maintained, but effectiveness against all three factors deteriorates
Solution Approach 1:
The patent applies the merging principle by combining two stabilizer compounds into a synergistic mixture that provides comprehensive protection against light, oxygen, and heat. Rather than relying on a single compound to handle all three degradation factors, the patent merges the protective effects of compound I (oxidation and heat resistance) and compound II (photo-stability and oxygen resistance), creating a more effective multi-factor protection system while maintaining reasonable compositional simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The synergistic mixture significantly improves the thermal stability of turbine fuels and lubricant compositions, reducing deposits and enhancing their resistance to degradation, thereby maintaining material properties and performance under extreme conditions.
Implementation Method 1
at least one sulfur-containing organic compound with antioxidant action
Data Source
AI summary
A synergistic mixture comprising from 1 to 99.9% by weight of compounds having structural elements (I)in which the free valencies on the oxygen atom and on the nitrogen atom may be combined to form a five-, six- or seven-membered ring and the benzene ring may also bear substituents at one or more of the free positions, and from 0.1 to 99% by weight of sulfur-containing organic compounds with antioxidant action. This synergistic mixture is suitable as a stabilizer for stabilizing inanimate organic material, especially mineral oil products and fuels, against the action of light, oxygen and heat.