Trap Column Outlet Tapered Aperture Prevents Clogging
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Solution Overview
Problem
Conventional preparative separation-purification systems using trap columns often experience clogging at the outlet end due to deposition of target components, especially when eluted at high concentrations, which impedes the flow of the eluate.
Innovation Solution
The system incorporates a tapered aperture at the outlet end of the trap column and a filter located downstream of the filler-containing area to prevent deposition, ensuring a gradual reduction in liquid passage diameter and impeding crystal growth, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the solvent passes through the filler-containing space and flows to the outlet, then the target component is eluted at high concentration, but the solvent stands still at the aperture causing deposition and clogging
Solution Approach 1:
The patent applies local quality by creating a tapered aperture with varying properties along its length. The aperture has a larger diameter at the inlet side and gradually decreases toward the outlet side, creating different flow conditions in different regions. This local variation in geometry prevents stagnant zones while maintaining efficient elution, directly resolving the contradiction between productivity and reliability.
2Device complexity
If a sudden decrease in passage diameter occurs at the outlet, then the structure is simple, but the liquid stands still and causes deposition
Solution Approach 1:
The patent employs curvature by using a tapered aperture design where the diameter gradually decreases rather than having a sudden sharp transition. This curved, gradual transition eliminates abrupt changes in flow direction and velocity, preventing stagnant zones where deposition occurs. The solution maintains structural simplicity while eliminating the harmful deposition effect through geometric curvature.
3Productivity
If the target component is eluted at high concentration, then the collection efficiency is improved, but deposits form within the passage especially at the outlet
Solution Approach 1:
The tapered aperture design performs preliminary action by preparing the flow path before the eluate exits. The gradual tapering预先 prevents the formation of stagnant zones and deposition conditions, addressing the potential clogging problem before it occurs. This proactive design maintains high concentration elution while preventing the harmful effects of deposition.
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 configuration effectively prevents clogging at the outlet end of the trap column, ensuring uninterrupted flow and efficient collection of target components.
Implementation Method 1
the aperture serving as the outlet has a tapered portion whose sectional area is largest on a plane facing an inner space of the trap column and decreases in a flowing direction of the liquid
Implementation Method 2
a filter for preventing deposition of the target component is provided at the boundary between an inner space of the trap column and a passage for discharging a liquid from the inner space
Implementation Method 3
passing a solution containing a target component through a trap column to capture the target component in the trap column
Implementation Method 4
passing an eluting solvent through the trap column to elute the target component captured in the trap column
Data Source
AI summary
In a preparative separation-purification system for passing a solution containing a target component through a trap column 21 to capture the target component in the column 21, and for subsequently passing an eluting solvent through the column 21 to elute the captured component and collect it in a container, an outlet aperture 27 of the column 21 has a tapered shape whose sectional area is largest on a plane facing an inner space of the column 21 and decreases in the flowing direction of the liquid. A filter 26 for preventing deposition of the target component is also provided at the boundary between the inner space of the column 21 and a passage for discharging liquid from the inner space. By this configuration, clogging of the passage at the outlet end of the column 21 due to deposition of the target component is prevented.