Adsorbent Cartridge for Trace Impurity Quantification
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Solution Overview
Problem
Current chemical analysis techniques are inadequate for detecting and quantifying impurities in fluid flows where the nature and quantity of the impurities are unknown or variable over time, especially in trace amounts, and fail to accurately model their interaction with solid adsorbents or catalysts in industrial settings.
Innovation Solution
A method and apparatus using a removable hollow metallic adsorbent cartridge with a capture mass that measures adsorption, capillary condensation, or chemisorption across multiple layers to concentrate and quantify impurities, allowing for their detection and analysis after long-term accumulation, and linking the quantity to cumulative fluid flow to calculate mean presence in the fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional chemical analysis techniques (GC, LC, IR, MS) are used for detecting impurities, then measurement precision is improved for known compounds within narrow quantity ranges, but adaptability deteriorates for unknown impurities with variable quantities and trace amounts
Solution Approach 1:
The capture mass is divided into multiple successive layers (first layer, second layer, etc.) that can be physically separated and analyzed independently. This segmentation allows each layer to be characterized separately to determine the spread of the adsorption front, resolving the contradiction by enabling precise measurement of impurity distribution across different zones while adapting to various impurity types and quantities.
Solution Approach 2:
The apparatus performs long-term accumulation of impurities in the capture mass before analysis. By pre-concentrating trace impurities over extended periods and allowing the adsorption front to develop fully across multiple layers, the system achieves detection capability for trace amounts and variable quantities that would be impossible with conventional real-time analysis methods.
2Productivity
If spot measurements are performed every few minutes, then productivity is improved with rapid sampling, but measurement precision deteriorates for randomly occurring impurities that may be absent at measurement moments
Solution Approach 1:
The system continuously accumulates impurities in the capture mass over long periods rather than performing discrete spot measurements. This continuous accumulation ensures that randomly occurring impurities are captured and concentrated regardless of when sampling occurs, maintaining high detection accuracy while allowing flexible, non-frequent sampling intervals that preserve productivity.
3Adaptability or versatility
If long-term accumulation of impurities is performed in the capture mass, then adaptability is improved for detecting trace and variable impurities, but device complexity increases with multiple layers and cumulative flow measurement systems
Solution Approach 1:
The capture mass utilizes porous adsorbent materials that naturally form multiple layers and capture impurities through adsorption mechanisms. This leverages the inherent properties of porous materials to achieve complex impurity separation and accumulation functions without requiring elaborate mechanical structures, thereby reducing device complexity while maintaining high adaptability for detecting various impurities.
4Loss of substance
If conventional systems discharge effluent to waste evacuation lines, then loss of substance is minimized by burning off impurities, but measurement precision deteriorates as no quantification of impurity distribution or interaction with adsorbents is achieved
Solution Approach 1:
The capture mass acts as an intermediary between the fluid stream and the analysis system. It accumulates and concentrates impurities from the fluid, then allows controlled analysis of the captured impurities in the laboratory. This intermediary function enables precise quantification of impurity distribution and adsorbent interaction while the analyzed effluent can subsequently be disposed of through conventional waste evacuation methods, maintaining both measurement precision and efficient substance management.
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
Enables accurate detection and quantification of impurities in trace amounts, determining their distribution and interaction with adsorbents or catalysts, facilitating precise modeling of chemical reactions in industrial reactors without excessive fluid consumption or safety compromises, and allowing for multi-point quantification in processing facilities.
Implementation Method 1
capturing and concentration by long term accumulation one or more chemical compounds, for example impurity(ies), by adsorption and/or capillary condensation and/or chemisorption
Implementation Method 2
capturing and concentration by long term accumulation one or more chemical compounds, for example impurity(ies), by adsorption and/or capillary condensation and/or chemisorption
Implementation Method 3
capturing and concentration by long term accumulation one or more chemical compounds, for example impurity(ies), by adsorption and/or capillary condensation and/or chemisorption
Data Source
AI summary
A method and apparatus for capturing a chemical compound, typically an impurity, and for accumulating said chemical compound on a capture mass CAPT included in at least one removable adsorbent cartridge MC over a period exceeding 2 days, with a view to the external chemical analysis thereof. The apparatus ST suitable for capturing at least one chemical compound in a fluid flow for its detection and/or quantification comprise, downstream of said cartridge or cartridges, at least one device for measuring the cumulative flow which has traversed the cartridge or cartridges over a set time period. In a preferred variation of the invention, the capture mass CAPT is fragmented into a plurality of elementary masses CAPTi which allows for the spread of an irreversible adsorption front or the displacement of a chromatographic zone.