Alcohol Solvent Purification Using Dissolvable Encapsulated Neutralizers
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Solution Overview
Problem
Existing alcohol-containing solvents used for degreasing metal parts become acidic, leading to corrosion and equipment damage, and recycling these solvents is inefficient, often resulting in plant downtime and disposal costs.
Innovation Solution
A cleaning agent is encapsulated in a material that dissolves in the solvent without forming interfering impurities, allowing for controlled release and neutralization of acids, using polyvinyl butyral as the encapsulation material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If alcohol-containing solvents are used for degreasing metal parts, then cleaning effectiveness is improved, but acidification occurs leading to corrosion damage
Solution Approach 1:
The patent applies preliminary action by adding stabilizers to the alcohol-containing solvent before use. These stabilizers proactively neutralize acids as they form during the degreasing process, preventing corrosion damage before it occurs. The stabilizers are incorporated into the solvent formulation in advance, creating a preventive rather than reactive solution.
Solution Approach 2:
The patent converts the harmful acidification process into a beneficial neutralization reaction. The stabilizers react with the acids formed during degreasing, transforming the harmful acidic environment into a neutral or basic environment that protects metal parts and equipment from corrosion while maintaining cleaning effectiveness.
2Reliability
If stabilizers are added to prevent acidification, then corrosion protection is improved, but solvent purity deteriorates due to interfering impurities
Solution Approach 1:
The patent applies local quality by using different stabilizers for different specific purposes within the solvent system. Basic stabilizers (amines, amides) are used specifically for neutralizing carboxylic acids, while other stabilizers address different impurity types. This targeted approach allows corrosion protection without uniformly compromising solvent purity, as each stabilizer addresses specific impurity types.
Solution Approach 2:
The patent uses composite stabilization systems combining multiple stabilizer types (amines, amides, other compounds) in the solvent formulation. This composite approach provides comprehensive corrosion protection against various acid types while allowing selective removal of different impurity classes, thereby maintaining overall solvent purity despite the presence of multiple stabilizing components.
3Loss of substance
If solvent recycling is implemented, then disposal costs are reduced, but plant downtime increases due to inefficient recycling processes
Solution Approach 1:
The patent enables continuous solvent recycling by implementing a stabilization system that maintains solvent quality over extended periods. The stabilizers continuously neutralize acids as they form during recycling operations, allowing the solvent to be reused multiple times without degradation. This continuous protection eliminates the need for frequent solvent replacement and reduces plant downtime associated with recycling operations.
Solution Approach 2:
The patent changes the chemical parameters of the solvent system by incorporating stabilizers that alter the acid-base balance. This parameter change allows the solvent to maintain acceptable purity levels throughout extended recycling cycles, transforming the solvent from a single-use or limited-use medium into a sustainably recyclable fluid that maintains its cleaning effectiveness and stability over time.
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 method effectively neutralizes acids and removes impurities, preventing corrosion and enabling solvent recycling without the need for safety precautions, maintaining solvent quality and reducing disposal costs.
Implementation Method 1
The encapsulation consists of a material that dissolves in the alcohol-containing solvent without forming interfering impurities
Implementation Method 2
the cleaning agent serves to purify the alcohol-containing solvent and, in particular, to remove the acidification of the alcohol-containing solvent
Data Source
AI summary
A method for processing an alcohol-containing solvent is described. The method according to the invention is particularly applicable to the processing of alcohol-containing solvents, which are used, for example, for cleaning metal parts. Further aspects of the present invention include compositions suitable for the aforementioned purpose, as well as the use of specific compositions for purifying alcohol-containing solvents.