Renewable Oil Particle Coating for Dust and Agglomeration Control
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Solution Overview
Problem
Existing coatings for granular fertilizers, primarily using mineral oils and waxes, are non-biodegradable and require heating before application, posing safety hazards and soil contamination risks, while renewable oil coatings are impractical at room temperature due to solid state at ambient conditions.
Innovation Solution
A liquid formulation comprising renewable oils and anionic surfactants with specific functional groups is developed, allowing application at ambient temperature and effectively preventing agglomeration and dust generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum-based coatings (mineral oils and waxes) are used to prevent agglomeration and dust, then coating effectiveness is improved, but environmental toxicity and non-biodegradability worsen
Solution Approach 1:
The invention changes the chemical composition parameters of the coating by replacing petroleum-based mineral oils and waxes with vegetable oils of plant origin. This substitution maintains the coating's protective function while eliminating the toxic and non-biodegradable properties of petrochemical components, directly resolving the contradiction between coating effectiveness and environmental safety
Solution Approach 2:
The invention creates a composite coating formulation by combining vegetable oils with specific functional additives including anionic surfactants (alkyl phosphates, alkyl ethers, alkylamines), waxes, and resins. This composite approach maintains the protective performance traditionally provided by petroleum-based coatings while using biodegradable and environmentally safe base materials, thus resolving the toxicity issue without sacrificing coating effectiveness
2Object-affected harmful factors
If vegetable oils are used as coating material, then biodegradability and environmental safety are improved, but application becomes impractical due to solid state at room temperature
Solution Approach 1:
The invention changes the physical state parameter of vegetable oils by selecting specific oil types and formulations that remain liquid at room temperature. Additionally, the addition of liquid surfactants and modifiers to the coating formulation ensures the final coating mixture maintains liquid state and appropriate viscosity for spray application, directly resolving the contradiction between environmental safety and application ease
Solution Approach 2:
The invention introduces liquid surfactants and coating modifiers as intermediary substances that work with vegetable oils to achieve the desired physical properties for application. These intermediaries help maintain the coating mixture in a liquid state at room temperature while still allowing the vegetable oil to provide its environmental benefits, thus resolving the contradiction between environmental safety and ease of application
3Reliability
If high quantities of coating composition are applied to achieve desired protection, then coating effectiveness is improved, but material consumption and cost increase
Solution Approach 1:
The invention employs surfactants with specific functional groups (alkyl phosphates, alkyl ethers, alkylamines) that provide self-assembling and self-organizing properties on the fertilizer granule surface. These surfactants create effective protective monolayers that prevent agglomeration and dust formation at lower concentrations, reducing the overall quantity of coating material needed while maintaining protection effectiveness
Solution Approach 2:
The invention creates a synergistic composite formulation where vegetable oils, surfactants, waxes, and resins work together to provide enhanced protective performance at lower application rates. The combination of materials provides multiple mechanisms of protection (surface tension reduction, adhesion enhancement, moisture barrier) that are more efficient than single-component coatings, thus reducing material consumption while maintaining effectiveness
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 formulation enables easy application and effective prevention of agglomeration and dust, maintaining safety and environmental sustainability without the need for heating, suitable for various granular materials.
Implementation Method 1
a liquid formulation for coating granular materials, said formulation comprising at least one oil of renewable origin and at least one anionic surfactant
Implementation Method 2
at least one anionic surfactant comprising at least one functional group having one or more heteroatom(s), the electronegativity of which is strictly less than 2.5
Data Source
AI summary
The present invention relates to the use of a liquid formulation for coating granular materials, said formulation comprising at least one oil of renewable origin and at least one anionic surfactant comprising at least one functional group having one or more heteroatom(s), the electronegativity of which is strictly less than 2.5. The present invention further relates to the granular material coated with said liquid formulation.