Multistage Microreactor Jet Mixing for Uniform High-Flow Reactions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing millimeter-scale microreactors face issues with fluid turbulence leading to uneven distribution, vortex formation, and reduced reaction conversion rates due to increased flow velocity, affecting mixing efficiency and production efficiency.
Innovation Solution
A multistage series microreactor design with splayed flow baffles and flow splitting columns that split, compound, and crush fluids, enhancing contact area and uniform distribution, using a jet manner to achieve rapid mixing and efficient reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flow velocity is increased to enhance processing capacity, then productivity is improved, but fluid turbulence causes vortex formation and uneven distribution, worsening mixing efficiency and reaction conversion rate
Solution Approach 1:
The microreactor is divided into multiple reaction channels arranged in series, with each channel containing segmented flow structures (baffles and mixing elements). This segmentation breaks the continuous flow into discrete stages, allowing controlled mixing at each segment while maintaining overall high flow velocity, thus resolving the contradiction between productivity and uniform distribution.
Solution Approach 2:
Flow distribution chambers and distribution plates are introduced as intermediary structures between the inlet and reaction channels. These intermediaries regulate and equalize the flow entering each parallel channel, ensuring uniform distribution even at high overall flow rates, thereby maintaining reliability while improving productivity.
2Productivity
If feature size is increased to enhance processing capacity, then productivity is improved, but stagnation zones expand, worsening mixing efficiency and heat transfer
Solution Approach 1:
The reactor incorporates dynamic flow control elements such as adjustable baffles and flow distribution mechanisms that can adapt to different operating conditions. This allows the system to maintain effective mixing performance across a range of flow rates and scales, resolving the contradiction between increased feature size for productivity and maintained mixing efficiency.
3Productivity
If flow velocity is increased to enhance processing capacity, then productivity is improved, but residence time distribution widens, worsening reaction conversion rate
Solution Approach 1:
The series arrangement of multiple reaction channels with controlled inter-channel flow distribution creates more uniform residence time distribution compared to a single large channel. Each segment contributes to the overall conversion while maintaining consistent residence times, allowing higher total flow rates without sacrificing conversion efficiency.
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 design achieves higher mixing efficiency and uniform fluid distribution, reducing pressure drop and preventing vortex coalescence, suitable for multiphase fluid mixing and mass transfer.
Implementation Method 1
by means of a jet manner, a fluid to be mixed is continuously split, compounded, stretched and crushed
Implementation Method 2
with the increase of flow velocity, the intensified fluid turbulence will inevitably cause the formation of vortices
Data Source
AI summary
The present invention relates to a multistage series microreactor and a fluid mixing method. The microreactor includes a base internally etched with a fluid passage, the base being provided with a fluid inlet and a fluid outlet which are communicated with the fluid passage, where the fluid passage includes a plurality of micro mixing tanks, a jet port is formed at an inlet of the micro mixing tank, adjacent micro mixing tanks are connected by jet port at a contraction section, and a splayed flow baffle plate and a flow splitting column which are arranged corresponding to the jet port are provided in the micro mixing tank, the flow splitting column being arranged below the splayed flow baffle plate. By means of a jet manner, a fluid to be mixed in the invention can be continuously split, compounded, stretched and crushed, thereby realizing rapid mixing and efficient, continuous reaction.