Internally Braced Chromatography Column for Uniform Bed Compression
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Solution Overview
Problem
Existing chromatography columns face challenges in achieving optimal compression and stability, particularly in large-scale bioprocess separations, leading to issues such as band broadening and instability due to varying permeabilities and flow velocities, and require cumbersome external support structures for large diameters.
Innovation Solution
A compact chromatography column design with internal bracing and lightweight construction, allowing for efficient packing and connection of multiple columns without external tie bars, using internal bracing to counteract bulging and ensure uniform compression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If external tie bars and thick plastic end pieces are used to prevent bulging in large diameter columns, then column strength and stability are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies the nesting principle by placing internal bracing elements inside the column's end pieces. The bracing is nested within the existing column structure rather than adding external support components. This internal bracing extends into the bed chamber and provides structural support from within, eliminating the need for external tie bars and thick end pieces while maintaining column strength and stability.
2Productivity
If multiple columns are packed with varying compression to increase capacity, then productivity is improved, but manufacturing precision and separation efficiency deteriorate due to band broadening
Solution Approach 1:
The patent applies local quality by providing different levels of structural support at different locations within the column. The internal bracing is positioned to provide targeted support where needed most, allowing for uniform compression across the entire packed bed. This localized reinforcement ensures that each column in a parallel stack achieves consistent compression, eliminating band broadening while maintaining high productivity through increased column capacity.
3Quantity of substance
If column diameter is increased to accommodate larger bed volumes for bioprocess separations, then separation capacity is improved, but column stability and resistance to hydrodynamic back pressure worsen
Solution Approach 1:
The patent applies dimensionality change by transitioning from external two-dimensional support (thick end pieces and external tie bars) to internal three-dimensional bracing. The internal bracing elements extend into the bed chamber, providing structural reinforcement throughout the column volume. This internal distribution of support structures enhances the column's ability to resist hydrodynamic back pressure and maintain stability while accommodating larger bed volumes for increased separation capacity.
Data Source
AI summary
The invention discloses a bioprocess chromatography column comprising: a) a bed chamber delimited by at least one side wall, a first bed support screen and a second bed support screen; b) a first end wall, secured to or integral with the side wall(s), with a first port fluidically connected via a first distributor to the first bed support screen; c) a second end wall, secured to or integral with the side wall(s), with a second port fluidically connected via a second distributor to the second bed support screen; d) a packing port in a wall; and e) an internal bracing, secured to, or integral with, at least one of the end walls and extending into the bed chamber.