Quaternary Ammonium Marine Fuel Composition for Asphaltene Control
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Solution Overview
Problem
Asphaltenes in marine fuels tend to precipitate, causing equipment fouling, and existing methods are inadequate in effectively addressing this issue.
Innovation Solution
The use of quaternary ammonium compounds to dissolve or disperse asphaltenes in marine fuels, specifically formulated to have a saturates-to-asphaltenes weight ratio of at least 4.0, with the addition of 50 to 2000 ppm of the compound, applied with mechanical shear energy to reduce fouling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If quaternary ammonium compounds are added to marine fuels to dissolve or disperse asphaltenes, then fouling of equipment is reduced, but the complexity of fuel composition increases
Solution Approach 1:
Quaternary ammonium compounds act as intermediary substances between asphaltenes and the marine fuel matrix. These compounds mediate the interaction by providing steric and electrostatic barriers that prevent asphaltene aggregation and deposition on equipment surfaces, thereby reducing fouling while maintaining fuel system simplicity
Solution Approach 2:
The invention changes the chemical parameters of the marine fuel by introducing quaternary ammonium compounds with specific molecular structures and concentrations (50-2000 ppm). This parameter change transforms the fuel's ability to handle asphaltenes, converting a problematic system into a stable, non-fouling system without fundamentally altering the fuel's basic composition
2Reliability
If the weight ratio of saturates to asphaltenes is increased to at least 4.0, then the effectiveness of asphaltene dispersion is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The invention establishes a specific parameter range for the weight ratio of saturates to asphaltenes (at least 4.0), which optimizes the natural dispersion capability of the fuel. This parameter change provides a clear, measurable target for fuel formulation while accounting for the natural variations in crude oil composition, balancing effectiveness with manufacturing feasibility
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
Significantly reduces fouling by up to 40% by effectively dissolving or dispersing asphaltenes, improving fuel performance and equipment longevity.
Implementation Method 1
the use of at least one quaternary ammonium compound for dissolving or dispersing asphaltenes in marine fuels
Implementation Method 2
the use of at least one quaternary ammonium compound for dissolving or dispersing asphaltenes in marine fuels
Implementation Method 3
applied with mechanical shear energy to reduce fouling
Data Source
AI summary
The present invention discloses a process for reduction of asphaltenes from marine fuels using quaternary ammonium compounds in certain marine fuels, the use of such quaternary ammonium compounds, and certain marine fuels comprising such quaternary ammonium compounds.