Multi-Stage Liquid-Liquid Chromatography for Solvent Reduction
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Solution Overview
Problem
Conventional liquid-liquid chromatographic systems are inefficient in separating chemical species due to high solvent consumption, low throughput, and high operational costs, particularly when targeting specific chemical species.
Innovation Solution
A multi-stage liquid-liquid countercurrent chromatographic system using two immiscible mobile phases with different partition coefficients for solutes, allowing for efficient separation of chemical species by differential partitioning and phase separation in multiple stages, reducing solvent use and operational costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional liquid-liquid chromatographic systems are used, then separation of chemical species is achieved, but solvent consumption is high and throughput is low
Solution Approach 1:
The continuous chromatographic system is divided into multiple discrete separation stages (first stage, second stage, third stage, etc.), each performing a portion of the overall separation task. This segmentation allows for optimized solvent usage at each stage while maintaining high overall throughput through continuous operation across all stages.
Solution Approach 2:
The system operates continuously with feed liquid stream being processed through multiple stages without interruption. Mobile phases are circulated continuously through the stages, and separated solutes are continuously collected, eliminating idle time and maximizing productivity while maintaining efficient solvent utilization.
2Reliability
If conventional liquid-liquid chromatographic systems are used, then separation of chemical species is achieved, but operational costs are high
Solution Approach 1:
The system employs multiple mobile phases with different partition coefficients (k values) to separate different solutes. By changing the mobile phase parameters across different stages, the system achieves high separation efficiency for multiple solutes simultaneously. This multi-parameter approach reduces operational costs by eliminating the need for multiple separate purification steps.
Solution Approach 2:
Each separation stage is designed to handle multiple solutes with different partition coefficients using different mobile phases. The system performs multiple separation functions within a single integrated platform, reducing operational costs by consolidating what would otherwise require multiple separate chromatographic systems.
3Manufacturing precision
If multi-stage countercurrent chromatographic system is used, then separation efficiency is improved and solvent use is reduced, but system complexity increases
Solution Approach 1:
The complex separation task is divided into multiple manageable stages, each with a specific function and mobile phase configuration. This segmentation makes the overall complex system easier to design, operate, and maintain by breaking it down into standardized modular units that can be independently optimized.
Solution Approach 2:
The system uses intermediate mobile phases with specific partition coefficients as mediators between the feed liquid stream and the collected solutes. These intermediary mobile phases facilitate efficient mass transfer and separation while maintaining system manageability through their well-defined chemical properties and predictable behavior.
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 system achieves high throughput, efficient separation, and cost reduction by enriching specific chemical species with fewer stages and less solvent, enhancing the purification process.
Implementation Method 1
continuous liquid-liquid chromatographic separation of chemical species using multiple liquid phases
Implementation Method 2
differential partitioning and phase separation in multiple stages
Data Source
AI summary
The present disclosure is related to the continuous liquid-liquid chromatographic separation of chemical species using multiple liquid phases and related systems and articles.