Continuous Reaction Sieve for Crystal Separation
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Solution Overview
Problem
Current continuous reaction systems face challenges in the continuous separation of crystal products from solid catalyst carriers, particularly in reactive crystallization processes where the presence of a second solid type complicates the process.
Innovation Solution
The implementation of a size-based separation method using a filter placed on the reactive crystallization vessel outlet, where the filter size is chosen such that Lcrystal<Lfilter<Lcarrier, allows for the isokinetic withdrawal of solid products while rejecting the solid catalyst carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a filter is used to separate crystal products from solid catalyst carriers, then continuous selective removal of products is enabled, but the filter must be carefully designed to avoid clogging and maintain isokinetic withdrawal
Solution Approach 1:
The patent applies parameter changes by carefully selecting the filter pore size parameter to fall within a specific range (0.01-100 micrometers) that is smaller than the crystal particles but larger than the catalyst carrier particles. This parameter optimization enables continuous selective withdrawal while preventing clogging, resolving the contradiction between productivity and reliability.
Solution Approach 2:
The filter acts as an intermediary separation medium between the crystal products and catalyst carriers. By positioning the filter with appropriate pore size, it selectively allows crystal particles to pass through while retaining the larger catalyst carrier particles, enabling continuous product removal without system clogging.
2Manufacturing precision
If the filter size is made small to allow fine crystal particles through, then product separation efficiency improves, but the risk of filter clogging increases
Solution Approach 1:
The patent optimizes the filter size parameter to a balanced range (0.01-100 micrometers) that provides sufficient separation efficiency for fine crystal particles while maintaining operational simplicity. This parameter selection avoids the need for extremely fine filters that would be prone to clogging and require complex maintenance systems.
3Productivity
If continuous withdrawal is implemented to maintain productivity, then process efficiency improves, but maintaining isokinetic conditions becomes difficult
Solution Approach 1:
The system achieves self-service by using the filter's physical structure and size-based separation mechanism to automatically maintain isokinetic withdrawal conditions. The filter's pore size naturally selects for particles of specific size ranges, enabling continuous operation without complex active control systems to maintain isokinetic conditions.
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 continuous, selective, and isokinetic removal of product crystals from the reaction vessel, maintaining or recycling the biocatalyst, and achieving a robust and continuous process.
Implementation Method 1
a sieve material disposed on the outlet line within the interior volume, the sieve material configured to reject the plurality of inert scaffold particles and allow the one or more products to pass therethrough into the outlet line
Data Source
AI summary
Disclosed herein are continuous reaction systems comprising a reaction vessel defining an interior volume and containing a plurality of inert scaffold particles. The reaction vessel can comprise an inlet line to provide one or more reactants to the interior volume such that the one or more reactants contact the plurality of inert scaffold particles. The reaction vessel can further comprise an outlet line to remove one or more products from the interior volume that result from a contact between the one or more reactants and the plurality of inert scaffold particles. The reaction vessel can also include a sieve material disposed on the outlet line within the interior volume configured to reject the plurality of inert scaffold particles and allow the one or more products to pass into the outlet line.