Gas Analysis Using Segmented Adsorbents and Desorption Profiles
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Solution Overview
Problem
There is a demand for technologies that can analyze gases using a simple structure, as existing methods may be complex and inefficient.
Innovation Solution
The method involves allowing a sample gas to be adsorbed by multiple adsorbents with different compositions, desorbing the gas individually from each adsorbent while detecting it, and acquiring unique desorption profiles to identify the sample gas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple adsorbents with different compositions are used to analyze gas, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The gas analysis function is segmented across multiple adsorbents with different compositions, where each adsorbent captures specific gas components. This segmentation allows the system to achieve comprehensive gas analysis precision through diverse adsorption characteristics while maintaining a relatively simple overall device structure by using individual adsorbent units.
Solution Approach 2:
Multiple adsorbents with different compositions are employed to perform multiple detection functions simultaneously. Each adsorbent type targets different gas components, making the system universally applicable for analyzing various gas compositions without requiring separate specialized devices for each gas type.
2Measurement precision
If individual detection of desorbed gas from each adsorbent is performed, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The desorption and detection process is performed periodically for each adsorbent in sequence. By desorbing gas from one adsorbent, detecting it, then moving to the next adsorbent in a periodic cycle, the system achieves individual detection precision for each adsorbent while avoiding the need for all detectors to operate simultaneously, thus reducing overall system complexity.
Solution Approach 2:
Gas is pre-concentrated on each adsorbent before detection. The adsorbents first adsorb and concentrate the target gas components from the sample, then during the detection phase, the concentrated gas is desorbed and detected. This preliminary concentration action enhances detection precision while allowing the use of simpler detectors.
3Adaptability or versatility
If adsorbents with different compositions are used, then adaptability is improved, but manufacturing precision requirements increase
Solution Approach 1:
Different regions of the analysis system use adsorbents with locally optimized compositions suited for detecting specific gas components. Each adsorbent is tailored to its specific detection task, providing local quality optimization that enhances overall system adaptability. This localized approach to adsorbent selection reduces the need for extremely precise control across all adsorbents, as each can be optimized independently for its specific function.
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 approach allows for reliable gas analysis using a simple structure, even with a small number of detectors, by leveraging unique desorption profiles from each adsorbent.
Implementation Method 1
allowing a sample gas to be adsorbed by each of a plurality of adsorbents respectively having compositions that are different from each other
Implementation Method 2
allowing the sample gas to be desorbed individually from the adsorbents while detecting individually the sample gas desorbed from each of the adsorbents
Data Source
AI summary
A method for analyzing a gas includes: allowing a sample gas to be adsorbed by each of a plurality of adsorbents (70) respectively having compositions that are different from each other; allowing the sample gas to be desorbed individually from the adsorbents (70) while detecting individually the sample gas desorbed from each of the adsorbents (70) so as to acquire desorption profiles of the sample gas that are respectively unique to the adsorbents (70); and identifying the sample gas by using a group of the desorption profiles. The acquiring of the desorption profiles is carried out by detecting, individually and over time, the sample gas desorbed from each of the adsorbents (70). Each of the desorption profiles is, for example, an overtime data created from a detection signal reflecting a quantity of the sample gas.