Micromixer Reflux Barrier for Clogging Prevention
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Solution Overview
Problem
Conventional micromixers face challenges with clogging and deposits due to chemical-physical processes, leading to reduced efficiency and product quality, as existing solutions often compromise reactor performance or require significant additional measures.
Innovation Solution
A micromixer design featuring a reflux barrier between the mixing and reaction zones, with non-return valves or membrane arrangements, that prevents reflux flows and allows for controlled nucleation and particle formation, combined with adjustable entry gaps and flow control mechanisms to manage nucleation rates and prevent clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If micromixers use small fluid channels (10-5000 μm) for efficient mixing and rapid diffusion, then mixing efficiency and productivity are improved, but the risk of deposits and clogging increases
Solution Approach 1:
The micromixer divides the mixing process into multiple segments or zones along the fluid path. Different sections have different functions: some zones promote rapid mixing through laminar flow and diffusion, while other zones are designed to prevent deposits and manage particle formation. This segmentation allows the system to maintain small channel dimensions for efficient mixing while incorporating specific features in different zones to address clogging risks.
2Reliability
If micromixers prevent deposits and clogging through design measures, then reliability is improved, but device complexity increases
Solution Approach 1:
The micromixer incorporates self-cleaning or self-regulating features that operate automatically during normal operation. For example, the design may include flow patterns or pressure gradients that naturally prevent deposit accumulation, or features that allow easy removal of particles without requiring external cleaning systems. This approach improves reliability while minimizing additional complexity.
3Reliability
If separating fluid is used to prevent premature reaction and clogging, then reliability is improved, but loss of substance increases due to dilution and subsequent removal requirements
Solution Approach 1:
Instead of introducing a separating fluid that requires subsequent removal, the invention extracts or eliminates the need for such additives. The design achieves clogging prevention through physical means such as optimized channel geometry, flow control mechanisms, or surface treatments that prevent premature reaction and particle deposition without adding substances that would dilute the product and require additional removal 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 design ensures efficient mixing with reduced risk of clogging, achieving high nucleation rates and consistent particle sizes while maintaining reactor efficiency, allowing for the production of finely disperse solids and nanoparticles with improved process control.
Implementation Method 1
A micromixer design featuring a reflux barrier between the mixing and reaction zones, with non-return valves or membrane arrangements, that prevents reflux flows
Implementation Method 2
A micromixer design featuring a reflux barrier between the mixing and reaction zones, with non-return valves or membrane arrangements, that prevents reflux flows and allows for controlled nucleation and particle formation
Implementation Method 3
allows for controlled nucleation and particle formation, achieving high nucleation rates and consistent particle sizes
Implementation Method 4
combined with adjustable entry gaps and flow control mechanisms to manage nucleation rates and prevent clogging
Data Source
AI summary
Micromixer for mixing at least two fluids that react to form precipitations or suspensions, comprising a first channel for supplying a first partial flow and a second channel for supplying a second partial flow, which flows enter into a mixing and reaction area via narrow entrance gaps and leave via an outlet channel with reverse flow prevention being placed between the mixing and reaction zone and at least one channel that supplies a partial flow.