Plunger Cooling Medium Selection for Stable Non-Aqueous Dispersion
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Solution Overview
Problem
In the production of non-aqueous dispersion compositions, the mixing of cooling water with a raw material composition leaking from a high-pressure pump disrupts dispersion stability, leading to aggregate formation and reduces cooling efficiency, which accelerates the deterioration of seal members and reduces productivity.
Innovation Solution
Using a cooling liquid medium with a particle size of 10 μm or more in a flocculation test, ensuring high affinity with the raw material composition, to prevent aggregate formation and maintain dispersibility, thereby prolonging seal member life and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling water is used to cool the high-pressure pump, then cooling efficiency is improved, but dispersion stability is disrupted and aggregates form
Solution Approach 1:
The patent introduces a compatibility test as an intermediary step to select an appropriate cooling liquid medium. The test determines whether the cooling medium is compatible with the dispersed medium by checking for aggregate formation. This intermediary selection process resolves the contradiction by ensuring the cooling medium does not disrupt dispersion stability while still providing effective cooling.
Solution Approach 2:
The patent changes the parameter of the cooling liquid medium from conventional cooling water to a specifically selected liquid medium that is compatible with the dispersed medium. By changing the chemical composition parameter of the cooling medium based on compatibility test results, the system maintains both cooling efficiency and dispersion stability.
2Temperature
If cooling water mixes with leaking raw material composition, then cooling function is maintained, but productivity is reduced due to seal member deterioration
Solution Approach 1:
The compatibility test acts as an intermediary selection mechanism to choose a cooling liquid medium that does not cause seal member deterioration. By selecting a medium compatible with both the dispersed medium and seal materials, the system maintains cooling function while preventing the productivity loss associated with frequent seal replacements.
Solution Approach 2:
The system performs self-protection by using the compatibility test to select a cooling medium that inherently protects against seal member deterioration. The selected cooling medium serves the dual function of cooling and protecting the seal members, eliminating the need for additional protective measures and maintaining continuous productivity.
3Temperature
If conventional cooling water is used, then cooling performance is achieved, but aggregate formation occurs disrupting the dispersion
Solution Approach 1:
The patent changes the chemical composition parameter of the cooling liquid medium from water to a compatible liquid medium selected through testing. This parameter change ensures that the cooling medium does not cause aggregate formation while maintaining effective cooling performance.
Solution Approach 2:
The compatibility test serves as an intermediary evaluation tool to identify cooling liquid media that maintain dispersion uniformity. The test results guide the selection of a cooling medium that achieves both cooling performance and dispersion 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
Prevents cooling efficiency reduction, enhances dispersibility, and extends the replacement interval of seal members, thus improving overall production efficiency.
Implementation Method 1
a cooling mechanism that cools the plunger part using a cooling liquid medium
Implementation Method 2
a supply mechanism that includes a plunger part and supplies the raw material composition to the dispersion mechanism
Data Source
AI summary
A dispersion composition production method uses a dispersion device including: a dispersion mechanism dispersing a raw material composition; a supply mechanism equipped with a plunger part and supplying the raw material composition to the dispersion mechanism; and a cooling mechanism cooling the plunger part using a cooling liquid medium. The raw material composition contains a non-aqueous dispersion medium and a dispersoid. The cooling liquid medium is a liquid medium that results in 0-50 particles 10 μm or more in the flocculation test below: dispersing a composition identical to the raw material composition; preparing a test dispersion liquid having a particle size of less than 10 μm; preparing a test sample by mixing the test dispersion liquid and the cooling liquid medium at a mass ratio of 1:1; and identifying the number of particles of 10 μm or more in the test sample.