Synthetic Silicate Absorbent for Natural Ester Dielectric Fluid Purification
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Solution Overview
Problem
The existing methods for manufacturing natural ester oil-based dielectric fluids are inefficient in removing impurities, which can affect the performance and service life of transformers, and existing absorbents like natural clays and alumina are not effective in controlling power factor and neutralization number at various temperatures.
Innovation Solution
The use of synthetic silicate absorbents comprising alkali metal and/or alkaline earth metal to contact and separate from refined, bleached, and deodorized natural ester oil, improving the removal of impurities and enhancing power factor control and neutralization number at temperatures ranging from 25° C. to 70° C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If natural clays and alumina are used as absorbents, then the process is simple and cost-effective, but the power factor control and neutralization number are not effectively controlled at various temperatures
Solution Approach 1:
The patent changes the chemical composition parameters of the absorbent by using synthetic silicate with specific alkali metal and alkaline earth metal content (0.1-10% alkali metal oxide, 0.1-10% alkaline earth metal oxide) instead of natural clays and alumina. This parameter change enables effective power factor control and neutralization number control at temperatures ranging from 25°C to 70°C while maintaining manufacturing feasibility.
2Manufacturing precision
If multiple processing steps are used to remove impurities, then the oil quality improves, but the manufacturing time and process complexity increase
Solution Approach 1:
The patent combines multiple impurity removal functions into a single absorption step using synthetic silicate absorbent. The synthetic silicate simultaneously removes polar contaminants, free fatty acids, and particulate materials that would traditionally require multiple separate processing steps, thereby reducing manufacturing cycle time while maintaining oil quality.
Solution Approach 2:
The synthetic silicate absorbent acts as an intermediary substance that facilitates the removal of various impurities through absorption. By introducing this specific absorbent material, the patent achieves efficient impurity removal in a single step without requiring complex multi-step processing sequences.
3Reliability
If conventional absorbents are used, then the process is straightforward, but the effectiveness in controlling power factor and neutralization number at temperatures from 25° C. to 70° C. is insufficient
Solution Approach 1:
The patent uses composite synthetic silicate materials containing specific combinations of alkali metals and alkaline earth metals. This composite composition provides enhanced temperature-dependent performance for power factor control and neutralization number control across the 25°C to 70°C range, overcoming the limitations of conventional single-material absorbents.
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 synthetic silicate absorbents significantly outperform natural absorbents in controlling power factor and neutralization number, achieving effective impurity removal and meeting the standards specified in ASTM D6871, thereby improving the quality and performance of natural ester oil-based dielectric fluids.
Implementation Method 1
contacting refined, bleached and deodorized (RBD) natural ester oil, or refined, bleached, winterized and deodorized (RBWD) natural ester oil, with a synthetic silicate absorbent
Data Source
AI summary
The method of manufacturing a natural ester, oil-based electrical insulation fluid by contacting refined, bleached, optionally winterized, and deodorized natural ester oil, e.g., soy oil, with an absorbent is improved by using as the absorbent a synthetic silicate absorbent comprising an alkali and/or alkaline earth metal, e.g., magnesium.