Microreactor Nanoparticle Generation via Intensifier Pump Control
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Solution Overview
Problem
Current methods for producing nanoparticles and facilitating materials processing, such as nanosuspensions and crystallization, face challenges in achieving efficient, continuous, and reliable production, particularly in controlling particle size distribution, morphology, and composition, while minimizing diffusion limitations and undesirable side reactions.
Innovation Solution
The use of microreactor technology with intensifier pumps and controlled energy dissipation mechanisms to achieve high mixing intensity and control of energy input, allowing for precise interaction of feed streams at the nanoscale within a microreactor, thereby optimizing mixing and reaction processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional nanoparticle production methods are used, then nanoparticles can be produced, but the process requires repetitive cycles and high energy consumption
Solution Approach 1:
The invention changes the fundamental parameters of the crystallization process by using microreactor technology to achieve precise control over nucleation and crystal growth conditions. This allows single-pass production with targeted particle sizes without repetitive processing cycles, directly resolving the contradiction between manufacturing precision and productivity
Solution Approach 2:
The invention replaces conventional mechanical milling and high-shear processing with a chemically-driven crystallization process in microreactors. This substitution eliminates the need for repetitive mechanical size reduction while achieving precise particle size control through controlled crystallization, improving both precision and productivity
2Manufacturing precision
If intensive mixing is used to achieve nanoscale contact, then particle size distribution improves, but energy consumption increases
Solution Approach 1:
The invention transitions from macro-scale intensive mixing to micro-scale flow dynamics in microreactors. By changing the dimensional scale of the reaction environment, the system achieves nanoscale contact and uniform particle size distribution through laminar flow and diffusion-controlled processes rather than energy-intensive turbulent mixing
Solution Approach 2:
The invention replaces mechanical intensive mixing with diffusion-controlled mass transfer in microreactors. This substitution achieves comparable or superior mixing efficiency at the molecular level without the high energy dissipation associated with conventional mechanical mixing, resolving the contradiction between precision and energy consumption
3Reliability
If conventional crystallization methods are used, then crystals can form, but control over nucleation and crystal morphology is insufficient
Solution Approach 1:
The invention precisely controls crystallization parameters including temperature, concentration, pH, and residence time within microreactors. This multi-parameter control enables reliable crystal formation while simultaneously achieving precise control over nucleation rate and crystal morphology, resolving the contradiction between reliability and manufacturing precision
Solution Approach 2:
The microreactor system performs multiple functions simultaneously: mixing, heating/cooling, reaction, and separation in a single integrated device. This multi-functionality enables comprehensive control over the crystallization process, achieving both reliable crystal formation and precise morphology control that cannot be achieved with conventional separate process steps
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 approach enables the production of nanoparticles with desired characteristics, such as uniform particle size and composition, while reducing energy losses and minimizing component damage, leading to enhanced efficiency and cost-effectiveness in materials processing.
Implementation Method 1
The liquid streams are pressurized to a high pressure in an intensifier pump
Implementation Method 2
solvent/antisolvent crystallization
Implementation Method 3
solvent/antisolvent crystallization
Implementation Method 4
control over mechanistic steps like nucleation and crystal morphology
Data Source
AI summary
Apparatus, systems and methods are provided that utilize microreactor technology to achieve desired mixing and interaction at a micro and/or molecular level between and among feed stream constituents. Feed streams are fed to an intensifier pump at individually controlled rates, e.g., based on operation of individually controlled feed pumps. The time during which first and second feed streams are combined/mixed prior to introduction to the microreactor is generally minimized, thereby avoiding potential reactions and other constituent interactions prior to micro- and/or nano-scale interactions within the microreactor. Various microreactor designs/geometries may be employed, e.g., “Z” type single or multi-slot geometries and “Y” type single or multi-slot geometries. Various applications benefit from the disclosure, including emulsion, crystallization, encapsulation and reaction processes.