Siloxane Demulsifier Composition for Asphaltene-Stabilized Emulsions
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Solution Overview
Problem
Existing demulsifier compounds and formulations struggle to effectively break emulsions formed during crude oil processing, particularly those stabilized by suspended solids and heavy components like asphaltene and paraffin waxes, which are challenging to separate due to their strong emulsion stability.
Innovation Solution
A demulsifier compound of formula (I) comprising linear or branched C1-6 alkyl chains, polyethylene glycol or polypropylene glycol chains, and poly(dialkylsiloxane) with specific molecular weights, combined with solvents and other demulsifier compounds, is used to disrupt emulsions and facilitate separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional demulsifier compounds are used to break emulsions, then some separation is achieved, but the emulsion remains stable due to suspended solids and heavy components like asphaltene and paraffin waxes
Solution Approach 1:
The demulsifier comprises a composite molecular structure combining poly(dialkylsiloxane) backbone with multiple alkylphenol polyglycolide侧 chains, creating a multifunctional molecule that simultaneously addresses multiple stabilization mechanisms (solids, asphaltene, paraffin waxes) through its various functional groups
Solution Approach 2:
Different portions of the demulsifier molecule perform different functions: the poly(dialkylsiloxane) backbone provides one set of properties while the alkylphenol polyglycolide侧 chains provide another, allowing the single compound to interact with multiple different emulsion stabilizing components at different locations
2Ease of operation
If demulsifier formulations are added to assist in breaking emulsions, then separation is facilitated, but the process becomes complex and requires multiple components
Solution Approach 1:
The demulsifier compound is designed as a universal agent that can handle multiple types of emulsion stabilizers (suspended solids, asphaltene, paraffin waxes) simultaneously, eliminating the need for separate demulsifiers tailored to each specific stabilizer type
Solution Approach 2:
Multiple functional groups that would traditionally require separate demulsifier compounds are merged into a single molecular structure, simplifying the formulation to essentially one active compound rather than a complex mixture of multiple demulsifiers
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 compound and formulations demonstrate rapid emulsion breaking, achieving clarity and quality improvements in both oil and water phases, reducing water-in-oil emulsions and enhancing crude dehydration efficiency.
Implementation Method 1
heavy components in the crude such as asphaltene and paraffin waxes often adsorb strongly to the oil-water interface and add additional stability to the emulsion
Data Source
AI summary
The invention provides a demulsifier compound, formulations comprising the demulsifier compound, and methods for preparing the demulsifier compound.