Capsule Gelation Quenching Unit Cross-Flow Control
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Solution Overview
Problem
Existing capsule production methods face challenges such as uneven shell thickness, agglomeration, and damage to fragile capsules during the gelation and quenching processes, particularly in batch reactors.
Innovation Solution
A capsule gelation quenching unit and method that utilize a tubular column with a longitudinally arranged dispersion channel and a cross-flow fluid inlet unit to introduce a cross-flow fluid perpendicularly to the capsules, allowing for controlled gelation suspension and improved homogeneity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If batch reactor gelation is used, then capsule formation is achieved, but uneven shell thickness and agglomeration occur
Solution Approach 1:
The batch reactor process is segmented into multiple continuous flow stages: droplet formation in a first continuous phase, gelation in a second continuous phase, and quenching in a third continuous phase. This segmentation allows each stage to be optimized independently, ensuring uniform shell thickness and preventing agglomeration.
Solution Approach 2:
The invention transitions from a single-phase batch process to a multi-phase continuous flow system operating in different spatial dimensions. Droplets form in one phase, gel in another, and are quenched in a third, creating a three-dimensional flow architecture that eliminates the uneven exposure problems of batch processing.
2Reliability
If batch solidification is used, then capsule curing is achieved, but capsules adhere to reactor walls and each other
Solution Approach 1:
The harmful adhesion effect is extracted and isolated by introducing a third continuous phase specifically designed to prevent sticking. This quenching phase removes capsules from the gelation environment where adhesion occurs, transferring them to a non-adhesive medium that maintains their structural integrity.
Solution Approach 2:
The third continuous phase acts as an intermediary substance between the gelation phase and the final capsule product. It mediates the transition by providing a non-adhesive environment that prevents capsule-to-wall and capsule-to-capsule adhesion while allowing complete gelation.
3Productivity
If continuous flow gelation is used, then processing efficiency is improved, but control over gelation suspension is reduced
Solution Approach 1:
The system employs dynamic control where flow rates of the three continuous phases can be independently adjusted to optimize the process. The residence time of droplets in each phase is dynamically controlled by flow rate adjustments, allowing precise control over gelation extent while maintaining continuous operation.
Solution Approach 2:
The multi-phase continuous flow system provides inherent feedback control: droplets that gel too quickly are automatically adjusted by the flow dynamics of the second and third phases, while under-gelled droplets receive extended residence time. This self-regulating flow system maintains control without requiring complex external intervention.
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 solution enables better control over capsule size and shell thickness, prevents damage to fragile capsules, and allows for continuous processing, reducing agglomeration and adhesion issues.
Implementation Method 1
a cross-flow fluid inlet unit (5) which is configured such that a cross-flow fluid can be introduced into the dispersion channel (3) in such a way that the introduced cross-flow fluid flows perpendicularly to the longitudinal direction (LO) of the tubular column (2)
Implementation Method 2
a first mesh unit (4) which is configured to remove the continuous phase from the dispersion channel (3)
Data Source
AI summary
Disclosed herein is a capsule gelation quenching unit for suspending capsule gelation, the capsule gelation quenching unit including a tubular column including a longitudinally arranged dispersion channel, wherein the dispersion channel is configured for transporting a dispersion of gelled capsules in a continuous phase along a longitudinal direction of the tubular column through the tubular column, and wherein the tubular column further includes a first mesh unit; a cross-flow fluid inlet unit, wherein the cross-flow fluid inlet unit is configured such that a cross-flow fluid can be introduced into the dispersion channel such that the introduced cross-flow fluid flows transversely to the longitudinal direction of the tubular column; and wherein the cross-flow fluid inlet unit is configured such that the cross-flow fluid flows through the first mesh unit.