Reactor with Mid-Channel Solvent Injection for Temperature Control
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Solution Overview
Problem
Conventional reactors face challenges in managing temperature during the reaction of multiple raw material solutions, leading to potential 'runaway' reactions and requiring extended times to generate target solutions, as they either lack effective temperature control or result in high reaction concentrations.
Innovation Solution
A reactor system with a reaction channel and a solvent channel, where the solvent is introduced between the upstream and downstream ends of the reaction channel to dilute the mixed raw material solution, allowing for controlled temperature management and accelerated reaction times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the concentration of raw material solutions is kept high to accelerate the reaction, then the reaction speed increases, but the temperature excessively rises causing runaway reactions
Solution Approach 1:
The patent applies preliminary action by pre-mixing raw material solutions in a separate mixing section before introducing them to the reaction channel. This allows the reaction to start with controlled concentration and temperature conditions, preventing excessive temperature rise while maintaining adequate reaction speed. The preliminary mixing ensures homogeneous distribution of reactants before the reaction begins.
Solution Approach 2:
The patent uses an intermediary approach by introducing a solvent or quenching agent into the reaction channel at a specific position downstream from the mixing section. This intermediary substance acts as a mediator to control the reaction rate and temperature by diluting the reactants or quenching excess reactivity, thereby preventing runaway reactions while maintaining productive reaction conditions.
2Temperature
If a solvent is mixed with the mixed raw material solution from the beginning to lower the concentration, then the temperature is controlled, but the time required to generate the target solution increases
Solution Approach 1:
The patent applies preliminary action by performing the reaction at high concentration in a controlled environment (microreactor channel) before introducing the solvent. This allows the reaction to proceed rapidly initially, and only after the main reaction is complete does the solvent dilution occur, thus minimizing the time penalty while achieving temperature control.
Solution Approach 2:
The patent segments the process into distinct spatial zones: a mixing section for rapid mixing, a reaction section for the main reaction at high concentration, and a dilution section where solvent is introduced. This segmentation allows each stage to optimize for its specific function - rapid reaction without excessive temperature rise - and avoids the time penalty of pre-dilution.
3Quantity of substance
If the solvent is introduced at the upstream end of the reaction channel, then the concentration is reduced, but the reaction efficiency decreases
Solution Approach 1:
The patent applies preliminary action by allowing the reaction to proceed in the upstream portion of the reaction channel before solvent introduction. The solvent is introduced at a specific position downstream, ensuring that the reaction has already gained momentum and converted a significant portion of reactants, thus maintaining high reaction efficiency while still achieving concentration reduction for temperature control.
Solution Approach 2:
The patent applies local quality by creating different concentration conditions in different spatial locations along the reaction channel. The upstream section maintains high concentration for efficient reaction, while the downstream section (after solvent introduction) has reduced concentration for temperature control and product stabilization. This local differentiation optimizes both reaction efficiency and temperature management.
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 system effectively controls temperature to prevent excessive rises, shortening the time required to generate target solutions while maintaining reaction efficiency by utilizing the solvent to dilute and cool the mixed raw material solution.
Implementation Method 1
a solvent channel that allows a solvent to flow in the solvent channel, the solvent being dissolvable in the mixed raw material solution to thereby reduce a concentration of the raw material solution
Implementation Method 2
the solvent being dissolvable in the mixed raw material solution to thereby reduce a concentration of the raw material solution
Data Source
AI summary
Provided is a reactor capable of generating a proposed target solution in a short time by reacting the raw material solutions with each other while allowing a mixed raw material solution containing a plurality of kinds of raw material solutions mixed with each other to flow, and restraining the temperature of the mixed raw material solution from excessively rising. The reactor includes a reaction channel allowing the mixed raw material solution to flow and a solvent channel allowing a solvent dissolvable in the mixed raw material solution to flow. The solvent channel is connected to the reaction channel between the upstream end and the downstream end of the reaction channel so that the solvent flowing in the solvent channel is mixed with the mixed raw material solution flowing in the reaction channel from the middle of the reaction channel.