Magnetic Mixing Device for Microreactor Blockage Prevention
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Solution Overview
Problem
Conventional microreactors face challenges in efficiently mixing fluids and managing the presence of solids, leading to potential blockages due to the formation of precipitates, which impede the mixing process and reduce operational efficiency.
Innovation Solution
A mixing device with a chamber that includes a circulation zone where a less paramagnetic mixing fluid flows within a base liquid, utilizing magnetic elements to facilitate efficient mixing and prevent solid accumulation by ensuring the mixing fluid does not come into contact with the chamber walls, thus allowing for effective handling of solids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional microreactors with small channels are used, then mixing time is long due to laminar flow, but device size is small
Solution Approach 1:
The invention introduces a dynamic magnetic field that moves along the circulation zone, creating time-varying magnetic forces that actively drive fluid circulation and enhance mixing. The magnetic field is not static but varies in time and space, creating dynamic flow patterns that significantly reduce mixing time compared to conventional static microreactors
Solution Approach 2:
The invention replaces conventional mechanical mixing mechanisms (such as rotating impellers or moving parts) with a magnetic field-based system. The magnetic field acts on paramagnetic particles in the fluid to generate circulation and mixing forces, eliminating the need for mechanical moving parts while achieving efficient mixing
2Productivity
If static mixers or active mixers are added to improve mixing, then mixing efficiency increases, but device complexity increases
Solution Approach 1:
The magnetic field system serves multiple functions simultaneously: it drives fluid circulation, creates mixing through magnetic gradient forces, and prevents solid accumulation. This multi-functional approach eliminates the need for separate mixing components, reducing overall device complexity while maintaining high mixing efficiency
Solution Approach 2:
The magnetic field system is self-regulating and automatically adapts to the fluid dynamics in the circulation zone. The moving magnetic field naturally creates circulation patterns and mixing without requiring external control mechanisms or additional components, making the system self-sufficient
3Volume of stationary object
If microreactor channels are used, then device size is small, but solids cause blockages
Solution Approach 1:
The invention extracts the mixing and circulation functions from fixed channel structures and implements them in a mobile magnetic field system within a circulation zone. This allows solids to be suspended and circulated without contacting channel walls, preventing blockages while maintaining a compact device footprint
Solution Approach 2:
The invention uses a liquid-based magnetic suspension system where paramagnetic particles are dispersed in a base liquid. This hydraulic approach allows solids to be kept in suspension through magnetic-driven circulation, preventing deposition and blockages that would occur in conventional channel-based systems
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 device achieves faster and more efficient mixing compared to conventional microreactors, while preventing blockages from solid formation, ensuring continuous operation and improved reaction outcomes.
Implementation Method 1
at least one magnetic element generating a magnetic field in the circulation zone so that the mixing fluid flows within the base liquid
Implementation Method 2
the mixing fluid being less paramagnetic than the base liquid
Data Source
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AI summary
A mixing device (10) comprising a chamber (12) defining a circulation zone (16), the circulation zone (16) comprising at least one base liquid (20) and a mixing fluid (22), the mixing fluid (22) being less paramagnetic than the base liquid (20), the mixing fluid (22) comprising and/or being formed from at least one first fluid, the mixing device (10) comprising at least one magnetic element generating a magnetic field in the circulation zone (16) such that the mixing fluid (22) flows within the base liquid (20), the chamber (12) comprising at least one first injection point (24) of the first fluid into the circulation zone (16), the first injection point (24) opening into the base liquid (20), or into the mixing fluid (22; 122), preferably into the base liquid (20; 120), the first fluid being immiscible with the base liquid (20; 120).