Supercritical Fluid Separation With Periodic Temperature Control
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Solution Overview
Problem
Existing methods for separating organic matters in mixed components using supercritical fluid combination media suffer from low separation efficiency, high cosolvent consumption, and high energy costs.
Innovation Solution
A method involving a supercritical fluid combination medium, where a mixed component and cosolvent are placed in a reaction vessel with the mixed component suspended above the cosolvent level, and the supercritical fluid is introduced to conduct separation with periodic changes in separation temperature within the supercritical temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mixed component is immersed into a cosolvent of the supercritical fluid combination medium for separation under fixed environmental state parameters, then the separation process is simple to operate, but the separation efficiency and yield of obtained separated components are low
Solution Approach 1:
The patent applies dynamics by periodically changing the separation temperature within the supercritical temperature range during the separation process. This dynamic temperature adjustment creates density fluctuations in the supercritical fluid, enhancing its extraction capability and improving separation efficiency while maintaining operational simplicity
Solution Approach 2:
The patent changes the temperature parameter of the supercritical fluid during separation. By periodically adjusting the temperature within the supercritical range, the density and solubility parameters of the supercritical fluid are dynamically modified, thereby enhancing the separation efficiency and yield without complicating the operation process
2Productivity
If the supercritical fluid combination medium passes through a separation device filled with the mixed component at a certain flow rate, then the separation process is effective, but the supercritical fluid circulation process has high energy consumption and high cosolvent consumption
Solution Approach 1:
The patent implements periodic action by cyclically changing the separation temperature within the supercritical temperature range. This periodic temperature adjustment creates rhythmic density fluctuations that enhance mass transfer and separation efficiency, reducing the need for continuous high-flow supercritical fluid circulation and thereby lowering energy and cosolvent consumption
3Quantity of substance
If the mixed component is not in direct contact with the supercritical fluid, then the cosolvent can dissolve the mixed component, but the separation effect of the supercritical fluid is not fully exerted
Solution Approach 1:
The patent uses dynamics by periodically changing the temperature to create density fluctuations in the supercritical fluid. This dynamic adjustment enhances the interfacial interaction between the supercritical fluid and the mixed component, allowing the supercritical fluid to exert its full separation effect while the cosolvent provides dissolution capability
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 method enhances separation efficiency and yield of separated components while reducing cosolvent consumption and energy costs, by allowing full contact between the mixed component and supercritical fluid and utilizing dynamic density fluctuations to accelerate component migration.
Implementation Method 1
contacting a supercritical fluid with a mixed component to be separated in a supercritical state. By introducing a cosolvent suitable for component separation requirements, components with different polar characteristics, boiling points, and molecular weights can be selectively separated
Implementation Method 2
a supercritical fluid combination medium passes through a separation device filled with the mixed component at a certain flow rate. In this method, a supercritical fluid circulation process has high energy consumption
Implementation Method 3
Due to its liquid-like density and gas-like low viscosity, supercritical fluids have excellent solubility for macromolecular organic matters
Data Source
AI summary
The present disclosure provides a method for enhanced separation of organic matters in a mixed component with a supercritical fluid combination medium. In the present disclosure, the method includes: placing a mixed component to be separated and a cosolvent in a reaction vessel, suspending the mixed component to be separated above a liquid level line of the cosolvent, and introducing a supercritical fluid into the reaction vessel to conduct supercritical fluid separation; where during the supercritical fluid separation, a separation temperature is changed periodically within a supercritical temperature range of the supercritical fluid combination medium. The supercritical fluid combination medium has characteristic parameters that change with temperatures, so as to obtain a higher separation yield with low energy consumption. In this way, a separation time is shortened, and a separation efficiency of the mixed component in a supercritical fluid environment is effectively improved.