Dispersion Flow Device for Extraction Vessel to Reduce CO2 Channeling
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Solution Overview
Problem
Channeling in supercritical fluid extraction (SFE) processes using CO2 reduces efficiency and extraction yields due to stagnant areas where CO2 fails to move extractants out of the extraction vessel and into the collection vessel.
Innovation Solution
A dispersion device with apertures of varying diameters and orientations is used within the extraction vessel to disperse CO2 throughout, minimizing channeling and ensuring uniform flow, which can be integral or retro-fitted to existing vessels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CO2 flows through the extraction vessel using conventional methods, then the extraction process is simple, but channeling occurs causing stagnant areas and reduced extraction efficiency
Solution Approach 1:
The dispersion device segments the CO2 flow path by introducing multiple apertures of varying diameters and orientations. This divides the single-channel flow into multiple dispersed streams, eliminating channeling and ensuring uniform distribution throughout the extraction vessel, thereby improving extraction efficiency without requiring complex external systems
Solution Approach 2:
The dispersion device implements local quality by varying aperture diameters and orientations at different locations within the vessel. Larger apertures are positioned in areas requiring greater flow, while smaller apertures are placed where gentler flow is needed. This localized adaptation ensures optimal CO2 distribution throughout the vessel, addressing channeling issues while maintaining a relatively simple overall structure
2Ease of operation
If CO2 flows through the center of the extraction vessel, then the flow path is direct and simple, but stagnant areas form in other regions reducing extractant movement
Solution Approach 1:
The dispersion device employs asymmetric aperture arrangement with varying diameters and orientations rather than uniform symmetric distribution. This asymmetric design deliberately creates non-uniform flow patterns that cover the entire vessel cross-section, preventing stagnant areas and ensuring all regions contribute to extractant yield while maintaining ease of operation through the integrated device structure
3Productivity
If a dispersion device with varying aperture diameters is installed, then CO2 distribution is uniform and channeling is minimized, but the device structure becomes more complex
Solution Approach 1:
The dispersion device functions as a porous structure with multiple apertures of varying diameters integrated into the vessel wall or internal support structure. This porous approach allows CO2 to disperse naturally through the aperture array without requiring additional active components, achieving uniform distribution and high extraction yield while keeping the device structure relatively simple and manufacturable
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 dispersion device increases turbulence and ensures even distribution of the extraction solvent, significantly improving extraction yields by preventing channeling and enhancing solvent flow throughout the vessel.
Implementation Method 1
The dispersion device increases turbulence and ensures even distribution of the extraction solvent
Data Source
AI summary
An extraction system and method of extraction are described herein. The extraction system generally includes an extraction vessel including a vessel body, an extraction solvent inlet, a material inlet, and an outlet, a collection vessel operably connected to the outlet, a dispersion devise disposed proximate the extraction solvent inlet and including a first surface and a second surface, a plurality of openings formed in the dispersion device and extending from the first surface to the second surface, whereby the plurality of openings are adapted for the flow of an extraction solvent therethrough.