Anion-Tolerant Lubricant Composition for Recycled-Water Conveyors
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Solution Overview
Problem
Conveyor belts in beverage factories face issues with lubricant compositions that form precipitates in recycled water with high levels of anions like sulfates and phosphates, leading to performance degradation and floor grout degradation due to free fatty acids, and instability in the presence of isothiazolinone biocides, hindering the use of recycled water for conveyor lubrication.
Innovation Solution
A lubricant composition comprising 65-95% water, 1-25% amphoteric surfactants (β-alanine derivatives), 1-10% anionic surfactants (N-lauroyl sarcosinic acid sodium salt), and 0.5-10% non-ionic surfactants (alcohol ethoxylates) with optional cationic surfactants (diamines) and additives, providing anion tolerance and improved lubrication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional lubricant compositions are used in recycled water with high anion levels, then lubrication is provided, but precipitates form causing performance degradation and nozzle clogging
Solution Approach 1:
The patent changes the chemical parameters of the lubricant composition by using water-soluble surfactants (amphoteric, anionic, and non-ionic) instead of conventional oil-based lubricants. This parameter change allows the lubricant to remain stable and soluble in recycled water containing high levels of anions like sulfates and phosphates, preventing precipitate formation while maintaining effective lubrication performance.
Solution Approach 2:
The patent creates a composite lubricant formulation by combining multiple types of surfactants (amphoteric surfactants at 1-25 wt%, anionic surfactants at 1-10 wt%, and non-ionic surfactants at 0.5-10 wt%). This composite approach leverages the synergistic effects of different surfactant classes to achieve both anion tolerance and effective lubrication, resolving the contradiction between stability and performance.
2Loss of substance
If recycled water is used for conveyor lubrication, then water consumption is reduced, but anion-induced precipitates form degrading lubrication
Solution Approach 1:
The patent converts the harmful effect of anions in recycled water into a beneficial outcome by formulating a lubricant that is specifically designed to tolerate high anion levels. The amphoteric and anionic surfactants in the composition are stable in the presence of sulfates and phosphates, actually benefiting from the ionic environment to maintain solubility and performance. This allows full utilization of recycled water for lubrication without performance degradation.
Solution Approach 2:
The patent changes the chemical parameters of the lubricant to be water-soluble and anion-tolerant, enabling the use of recycled water (which has different chemical parameters compared to fresh water) without causing precipitate formation. This parameter adaptation allows the system to achieve both water conservation and reliable lubrication performance.
3Reliability
If conventional lubricants are used, then lubrication is provided, but free fatty acids degrade floor grout
Solution Approach 1:
The patent replaces the conventional oil-based lubricant mechanism with a water-based surfactant system. This substitution eliminates the free fatty acids that cause floor grout degradation while maintaining the essential lubrication function through the surfactant molecules. The water-based formulation provides lubrication without the harmful byproducts of traditional lubricants.
Solution Approach 2:
The patent changes the chemical composition parameters from oil-based to water-based, fundamentally altering the chemical properties of the lubricant. This parameter change eliminates the generation of free fatty acids that degrade floor grout, while the surfactant system maintains effective lubrication through reduced friction between conveyor belt and conveyed items.
4Reliability
If traditional lubricant formulations are used with isothiazolinone biocides, then biocidal protection is provided, but lubricant instability occurs
Solution Approach 1:
The patent introduces amphoteric surfactants as intermediary compounds that are compatible with isothiazolinone biocides. These amphoteric surfactants act as a buffering intermediary that stabilizes the overall formulation, preventing the instability that would otherwise occur between traditional lubricant components and isothiazolinone biocides, while maintaining both biocidal protection and formulation stability.
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 composition maintains low turbidity and coefficient of friction, ensuring effective lubrication even in recycled water with high anion levels, preventing nozzle clogging and enhancing conveyor belt performance.
Implementation Method 1
1 wt% to 25 wt% of at least one amphoteric surfactant, wherein the at least one amphoteric surfactant comprises β-alanine, N-(2-carboxyethyl)N-(2-ethylhexyl) monosodium salt and/or β-alanine, N-(2-carboxyethyl)N-tallow alkyl derivative
Implementation Method 2
The presently disclosed subject matter offers an anion tolerant lubricant which has improved lubrication performance
Implementation Method 3
1 wt% to 10 wt% of at least one anionic surfactant and 0.5 wt% to 10 wt% of at least one non-ionic surfactant
Data Source
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AI summary
The presently disclosed subject matter Is directed to formulations for lubricating a conveyor belt used in beverage packaging. One of the disclosed lubricant compositions comprises water, at least one amphoteric surfactant, at least one anionic surfactant and at least one non-ionic surfactant. Also disclosed is a system for applying a lubricant to a conveyor belt and a method for lubricating a conveyor belt.