Ion Chromatography Suppressor Sealing and Resin Retention
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Solution Overview
Problem
Existing ion chromatography suppressors face issues with low pressure resistance, easy leakage, complex assembly, inconsistent particle size control, and high maintenance requirements, leading to inefficient ion analysis and increased costs.
Innovation Solution
An ion chromatography suppressor design featuring a compact structure with ion exchange membranes, resin particles for support, and a screen plate to manage eluent flow, along with titanium electrodes and corrosion-resistant coatings, to enhance sealing and ion exchange efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resin particles are packed to control dead volume, then ion exchange efficiency is improved, but manufacturing precision deteriorates due to inability to control particle size within preset range
Solution Approach 1:
The patent employs resin particles with controlled porosity and pore size distribution to achieve consistent ion exchange performance. The porous structure allows for standardized particle characteristics that can be precisely manufactured, resolving the contradiction between maintaining ion exchange efficiency and controlling particle size consistency.
2Reliability
If packed column suppressor is used, then ion exchange capacity is improved, but device complexity increases due to stringent material selection and processing requirements
Solution Approach 1:
The suppressor is divided into multiple segments or modules that can be independently manufactured and assembled. This segmentation allows for standardized production of each module with controlled complexity, while the overall system achieves high ion exchange capacity through the combined effect of multiple segments.
Solution Approach 2:
The suppressor design incorporates universal components and standardized interfaces that can be used across different configurations. This multi-functionality reduces the need for custom-made parts and simplifies the overall assembly process while maintaining high ion exchange capacity.
3Reliability
If small pore size eluent inlet or outlet is used, then resin particle retention is improved, but productivity deteriorates due to slender inlet/outlet channel
Solution Approach 1:
The patent transitions from a single-dimension restriction (small pore size) to a multi-dimensional solution by incorporating screen plates with specific mesh configurations. This allows retention of resin particles through the two-dimensional screen structure while maintaining larger three-dimensional inlet/outlet channels for high productivity.
4Ease of operation
If prior suppressor is used, then ion analysis function is achieved, but reliability deteriorates due to low pressure resistance and easy leakage
Solution Approach 1:
The suppressor employs composite material construction combining multiple materials with complementary properties. This includes pressure-resistant structural materials combined with chemically inert materials for ion exchange, creating a system that maintains both functionality and high pressure resistance with reduced leakage.
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 design improves ion exchange reactions, reduces leakage, and simplifies assembly, while maintaining ion chromatogram quality and reducing operational costs by supporting ion exchange membranes and facilitating resin particle retention within the suppressor.
Implementation Method 1
a suppression chamber is formed between the first ion exchange membrane and the second ion exchange membrane, and the suppression chamber is filled with resin particles for ion exchange and support
Implementation Method 2
the first electrode is embedded on a side of the first clamping plate adjacent to the intermediate plate, and a first electrolysis chamber is formed between the first electrode and the first ion exchange membrane; the second electrode is embedded on a side of the second clamping plate adjacent to the intermediate plate, and a second electrolysis chamber is formed between the second electrode and the second ion exchange membrane
Data Source
AI summary
An ion chromatography (IC) suppressor includes a first clamping plate, an intermediate plate, a second clamping plate, a first ion exchange membrane, a second ion exchange membrane, a first electrode and a second electrode. The first clamping plate, the intermediate plate and the second clamping plate are tightly buckled in sequence to compact the first ion exchange membrane between the first clamping plate and the intermediate plate and compact the second ion exchange membrane between the intermediate plate and the second clamping plate. Resin particles are filled between the two ion exchange membranes. An eluent inlet and an eluent outlet are provided respectively at two ends of the intermediate plate, and an accommodating groove is formed at each of a tail end of the eluent inlet and a head end of the eluent outlet. The first clamping plate and the second clamping plate are provided with a sealing lip, respectively.