Chromatography Fluid Distributor with Resistive Medium
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Solution Overview
Problem
Existing chromatography columns, particularly of large diameter, face challenges in efficiently distributing fluids over their surface due to complex and costly distributor designs, which can lead to increased costs and reduced separation efficiency.
Innovation Solution
A fluid distributor for chromatography columns featuring a layer of resistive medium fixed to the floor with a spacing device to maintain fluid circulation clearance, allowing for uniform fluid distribution and reduced pressure drop, comprising multiple juxtaposed pieces of resistive medium and a deflector at injection points, facilitating assembly and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If complex multi-stage distribution systems or conical distributors with porous material are used, then fluid distribution uniformity is improved, but manufacturing cost and device complexity increase significantly
Solution Approach 1:
The distributor is segmented into three main components: a floor (flat or slightly conical), a resistive medium layer (porous material), and a spacing device. This segmentation allows each component to be manufactured separately with simpler processes and assembled together, reducing overall manufacturing complexity while maintaining distribution uniformity through the coordinated function of the components.
Solution Approach 2:
A layer of resistive medium with porous structure is introduced between the floor and the fluid flow path. This porous layer provides resistance that promotes uniform fluid distribution across the column cross-section without requiring complex multi-stage distribution channels or precisely machined conical surfaces. The porous material naturally distributes fluid through its interconnected pore structure.
2Productivity
If large-diameter columns are equipped with precision-machined floors and complex distributor systems, then fluid distribution efficiency is improved, but manufacturing cost increases
Solution Approach 1:
The distributor system is divided into separable components that can be manufactured using less expensive processes. The floor can be made with standard machining or even pre-fabricated sections, the resistive medium layer can be installed as a separate component, and the spacing device can be a simple mechanical element. This segmentation avoids the need for expensive precision-machined monolithic floors required in traditional large-diameter column distributors.
Solution Approach 2:
The invention changes the approach from relying on precise geometric parameters (machined floor surfaces, conical angles) to relying on the resistance characteristics of the porous medium layer. This parameter change allows for less stringent manufacturing tolerances and lower manufacturing costs while maintaining effective fluid distribution in large-diameter columns.
3Ease of operation
If distributors with large interstitial spaces are used, then ease of assembly is improved, but fluid dispersion increases and separation efficiency decreases
Solution Approach 1:
The resistive medium layer with controlled porosity serves as the primary distribution mechanism. The porous structure provides sufficient resistance to fluid flow to minimize dispersion and maintain separation efficiency, while the layer can be installed as a complete component between the floor and the fluid path, maintaining ease of assembly. The key is that the porous material itself, rather than large interstitial spaces, provides the necessary flow control.
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 provides efficient fluid distribution across large-diameter chromatography columns with a simpler design, reducing costs and improving performance by minimizing fluid dispersion and pressure drop, while simplifying assembly and maintenance operations.
Implementation Method 1
a layer of resistive medium fixed to the floor and formed of a plurality of resistive medium pieces juxtaposed on the face of the floor, the resistive medium being permeable to the fluid
Implementation Method 2
resistive medium layer... ensuring uniform distribution of the fluid across the entire surface of the stationary phase
Data Source
Figure 1~2
Figure 3~5
Figure 6~7b
AI summary
The invention relates to a fluid distributor (9, 10) for a column (1) comprising at least one cell (2) containing a bed of particles (3), the fluid distributor (9, 10) comprising: - a floor (11, 21) comprising at least one injection point (15, 25) providing a fluidic connection on either side thereof; - a layer of a resistive medium (12, 22) fixed on one face of the floor (11, 21), the resistive medium being permeable to the fluid; - a spacing device (13, 23) inserted between the floor (11, 21) and the layer of resistive medium (12, 22) and maintaining a space for the circulation of the fluid between the floor (11, 21) and the layer of resistive medium (12, 22). The invention also relates to a column, in particular a chromatography column, provided with this fluid distributor.