Ionic Liquid Asphaltene Inhibitor Composition
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Solution Overview
Problem
Asphaltene deposits in petroleum hydrocarbon fluids cause operational difficulties, safety issues, and refining problems due to their adverse impact on viscoelasticity and flow behavior, and existing treatments are not always effective in preventing or reducing their deposition and accumulation.
Innovation Solution
An asphaltene inhibitor composition is developed, combining an asphaltene inhibitor with an ionic liquid, which enhances the inhibitor's performance by stabilizing and preventing the formation and precipitation of asphaltenes during production, processing, storage, and transportation, by forming a synergistic blend or reaction product that improves stability and reduces deposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional asphaltene inhibitors are used alone, then the treatment is simple and cost-effective, but the effectiveness in preventing asphaltene deposition is insufficient
Solution Approach 1:
The patent combines conventional asphaltene inhibitors with ionic liquids to create a composite inhibitor composition. The ionic liquid component (containing cations such as imidazolium, pyridinium, or ammonium) works synergistically with the conventional inhibitor to enhance asphaltene stabilization effectiveness while maintaining reasonable compositional complexity
Solution Approach 2:
The patent modifies the chemical parameters of the inhibitor system by introducing ionic liquids with specific cation structures and concentrations (typically 0.1-10 wt%). This changes the interaction mechanisms between the inhibitor and asphaltenes, improving deposition prevention effectiveness through enhanced solubility and steric stabilization
2Reliability
If ionic liquid is added to enhance inhibitor performance, then asphaltene stabilization effectiveness increases by 25-50%, but the composition complexity and cost increase
Solution Approach 1:
The patent optimizes the concentration parameter of ionic liquid in the composite inhibitor to achieve 25-50% effectiveness improvement while controlling composition complexity. By maintaining ionic liquid content at practical levels (0.1-10 wt%), the patent balances performance enhancement with compositional simplicity
Solution Approach 2:
The patent introduces ionic liquids with specific local chemical properties (charged cationic structures) that target specific interaction sites on asphaltene molecules. This localized chemical action enhances overall stabilization effectiveness without requiring uniform complexity throughout the entire composition
3Object-affected harmful factors
If asphaltene deposits form, then operational difficulties and safety issues occur, but using inhibitors alone does not sufficiently prevent deposition
Solution Approach 1:
The patent uses composite inhibitor material combining conventional inhibitors with ionic liquids to provide enhanced protection against asphaltene deposition. The synergistic interaction between the two components creates stronger prevention effectiveness, reducing harmful deposition by addressing multiple stabilization mechanisms simultaneously
Solution Approach 2:
The patent applies the composite inhibitor composition in advance to petroleum hydrocarbon fluids to prevent asphaltene deposition before it occurs. The ionic liquid-enhanced inhibitor creates a protective effect that anticipates and prevents the harmful deposition process, rather than treating it after formation
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 combination of the asphaltene inhibitor and ionic liquid significantly increases the effectiveness of asphaltene stabilization and inhibition, reducing the formation and accumulation of asphaltenes by at least 25% to 50% compared to using the inhibitor alone, thereby improving the stability and efficiency of petroleum hydrocarbon fluid handling and processing.
Implementation Method 1
combining an asphaltene inhibitor with an ionic liquid, which enhances the inhibitor's performance by stabilizing and preventing the formation and precipitation of asphaltenes during production, processing, storage, and transportation, by forming a synergistic blend or reaction product
Data Source
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AI summary
Methods of treating a petroleum hydrocarbon fluid are described wherein the petroleum hydrocarbon fluid is contacted with an asphaltene inhibitor composition having an ionic liquid and an asphaltene inhibitor. The ionic liquid has a cation of R1R2R3R4N+ or R1R2R3N+R8N+R5R6R7 and an anion, wherein R1, R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen, a straight or branched C1-30 alkyl group, benzyl, a C7-30 alkylbenzyl group, a C7-30 arylalkyl group, a straight or branched C3-30 alkenyl group, a C1-30 hydroxyalkyl group, a C7-30 hydroxyalkylbenzyl group, an oxyalkylene or a polyoxyalkylene group or a zwitterion; R8 is a straight or branched C1-30 alkylene, an alkylene oxyalkylene or an alkylene polyoxyalkylene; and the anion includes halides, hydroxyl, bicarbonate, carbonate, alkyl carbonates, alkoxides, carboxylates, hydroxycarboxylates or a combination thereof.