Microparticle Production via Thin Film Solubility Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for producing microparticles face challenges in achieving uniformity, stability, and scalability due to temperature and concentration gradients in batch systems, leading to difficulties in controlling reaction conditions and resulting in low productivity and high energy consumption.
Innovation Solution
A method involving the formation of a thin film fluid between two rotating processing surfaces, where the temperature difference causes a change in saturation solubility, allowing for uniform microparticle separation with controlled temperature and concentration distributions, reducing energy consumption and preventing clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If batch reaction container with stirring operation is used, then separation of microparticles can be achieved, but temperature gradient and concentration gradient occur leading to non-uniform microparticles
Solution Approach 1:
The invention divides the reaction system into multiple micro-reactors connected in parallel, where each micro-reactor operates as an independent unit. This segmentation allows each micro-reactor to maintain uniform temperature and concentration distributions, preventing the formation of gradients that occur in single large batch containers. The micro-scale dimensions enable effective heat and mass transfer throughout each reactor volume.
Solution Approach 2:
The invention changes the scale parameter from macro-scale batch reaction containers to micro-scale reactor channels. This parameter change fundamentally alters the heat and mass transfer characteristics, enabling uniform temperature and concentration distributions. The micro-scale geometry allows for controlled reaction conditions that maintain homogeneity while reducing overall reaction time through parallel processing.
2Manufacturing precision
If microreactor with small flow path diameter is used, then uniform mixing can be achieved, but pressure loss increases requiring extremely high feeding pressure
Solution Approach 1:
The invention segments the reaction system into multiple parallel micro-reactors, distributing the total flow across many channels. This segmentation reduces the pressure loss in each individual channel while maintaining the uniform mixing benefits of micro-scale geometry. The parallel configuration allows for lower feeding pressure compared to a single micro-reactor handling the same total volume.
Solution Approach 2:
The invention introduces a parallel channel configuration as an intermediary structure between the feed source and reaction zones. This intermediary arrangement allows the system to benefit from both micro-scale uniform mixing and reduced pressure loss through distributed flow paths. The parallel architecture acts as a mediator that reconciles the conflicting requirements of small flow path diameters for mixing and pressure management.
3Productivity
If number of microreactors is increased for scaling up, then production capacity increases, but absolute number of failure causes increases
Solution Approach 1:
The invention segments the production system into modular micro-reactor units that can operate independently. This segmentation allows for easier detection and isolation of failures to specific units rather than affecting the entire system. The parallel architecture enables continued operation of functional units even when some reactors experience issues, maintaining overall system reliability while scaling up production capacity.
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
This method enables the production of monodispersed microparticles with excellent re-dispersibility and reduced energy usage, facilitating continuous and scalable production while maintaining uniformity and avoiding issues like clogging.
Implementation Method 1
the temperature difference causes a change in saturation solubility, allowing for uniform microparticle separation
Implementation Method 2
the thin film fluid is cooled or heated (warmed) to allow saturation solubility to change thereby separating microparticles
Data Source
AI summary
It is an object of the present invention to provide a method for producing microparticles, which can produce monodispersed microparticles, causes no clogging with a product due to self-dischargeability, requires no great pressure, and is excellent in productivity, wherein a fluid in which at least one kind of microparticle materials is dissolved is introduced between two processing surfaces arranged to be opposite to each other to be able to approach to and separate from each other, at least one of which rotates relative to the other, to be formed into a thin film fluid, and the thin film fluid is cooled or heated (warmed) to allow saturation solubility to change, thereby separating microparticles.