Supercritical Extraction Heating Blocks
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Solution Overview
Problem
In component extraction devices using supercritical fluids, variations in heating time among sample containers lead to differences in analysis results, particularly for components with low thermal stability, as the critical temperature of carbon dioxide is relatively low and extended heating can cause alteration or decomposition of extracted components.
Innovation Solution
A component extraction device with a container rack and heating blocks that are individually controlled by temperature sensors to ensure consistent heating times across all sample containers, minimizing variations in analysis results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple sample containers are heated simultaneously in a one-at-a-time manner, then the extraction process can be completed, but the heating time varies among samples causing variation in analysis results
Solution Approach 1:
The heating system is segmented into multiple independent heating blocks, each corresponding to a sample container. This allows simultaneous heating control for multiple samples while maintaining consistent heating conditions for each individual sample, eliminating the one-at-a-time limitation and its associated timing variations.
Solution Approach 2:
Each heating block is equipped with its own temperature sensor and heating control, allowing localized temperature control for each sample container. This ensures that each sample receives consistent and uniform heating conditions tailored to its specific requirements, preventing variation in analysis results while maintaining high processing capacity.
2Productivity
If heating time is extended to ensure complete extraction, then extraction efficiency improves, but components with low thermal stability are altered or decomposed
Solution Approach 1:
Temperature sensors are integrated with each heating block to provide real-time feedback on heating conditions. The heating control receives this feedback and adjusts heating parameters accordingly, ensuring that heating is sufficient for complete extraction while preventing excessive heating that would cause component decomposition. This closed-loop control maintains optimal heating time for each sample.
Solution Approach 2:
The system dynamically adjusts heating parameters (temperature, time) based on the specific requirements of each sample and its component stability. By optimizing these parameters for each individual sample rather than using a fixed prolonged heating cycle, the system achieves complete extraction efficiency while minimizing the risk of thermal decomposition for heat-sensitive components.
3Manufacturing precision
If individual heating control is implemented for each sample container, then heating consistency improves, but device complexity increases
Solution Approach 1:
The heating system is designed as a modular multi-functional unit where each heating block can independently control heating for its corresponding sample container. This universal design allows the same heating block structure to serve multiple samples simultaneously, achieving consistent heating control without requiring entirely separate heating systems for each sample, thus managing complexity while maintaining precision.
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 device ensures uniform heating of sample containers, maintaining the supercritical state of the extraction solvent, thereby reducing variations in analysis results and preventing component alteration or decomposition.
Implementation Method 1
The extraction solvent supplied to the sample container is heated in the oven, and is thus turned into a supercritical fluid. The extraction solvent which was turned into the supercritical fluid gains an eluting capability to extract a component from a sample.
Implementation Method 2
The extraction solvent supplied to the sample container is heated in the oven
Implementation Method 3
a plurality of temperature sensors each configured to detect a temperature of each of the plurality of heating blocks
Implementation Method 4
The extraction solvent which was turned into the supercritical fluid gains an eluting capability to extract a component from a sample
Data Source
AI summary
Provided is a component extraction device for eluting a component in a sample into a supercritical fluid to extract the component from the sample. The component extraction device includes: a container rack including a plurality of sample container holding parts; a rack mounting stand including a mounting section on which the container rack is mounted; a plurality of heating blocks fixedly disposed on a mounting face of the mounting section at positions respectively corresponding to the plurality of sample container holding parts; a plurality of temperature sensors each configured to detect a temperature of each of the plurality of heating blocks; and a control unit configured to respectively control the plurality of heating blocks, based on results of detection by the plurality of temperature sensors.