Acid Gas Adsorption Layer With Deterioration Inhibitor for Cycle Stability
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Solution Overview
Problem
Existing carbon dioxide adsorption devices experience a decrease in adsorption performance due to repeated heating treatments, leading to volatilization and wear of the adsorption material.
Innovation Solution
Incorporation of a deterioration inhibitor with high solubility for carbon dioxide and low vapor pressure, combined with a porous carrier, to form an acid gas adsorption layer that suppresses volatilization and wear, maintaining adsorption performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If repeated heating treatment is applied to the absorbent structure for carbon dioxide capture, then carbon dioxide can be desorbed and captured, but the carbon dioxide adsorption performance gradually decreases due to volatilization and wear of the adsorption material
Solution Approach 1:
A deterioration inhibitor is introduced as an intermediary substance between the adsorption material and the harsh heating environment. This inhibitor suppresses the volatilization and wear of the adsorption material during repeated heating cycles, thereby maintaining adsorption performance stability while allowing continuous carbon dioxide capture operations
Solution Approach 2:
The physical and chemical parameters of the adsorption layer are modified by incorporating the deterioration inhibitor. This changes the thermal stability and resistance properties of the adsorption material, enabling it to withstand repeated heating treatments without significant loss of performance
2Duration of action of moving object
If the adsorption material is used repeatedly for carbon dioxide adsorption and desorption, then continuous carbon dioxide capture can be achieved, but the adsorption material deteriorates due to volatilization and wear
Solution Approach 1:
The deterioration inhibitor is applied beforehand to the adsorption material to provide protective cushioning against volatilization and wear. This pre-established protection allows the adsorption material to withstand repeated heating cycles without significant degradation, extending the operational cycle duration
Solution Approach 2:
The deterioration inhibitor acts as a protective intermediary layer that shields the adsorption material from direct exposure to harsh thermal conditions, thereby reducing material loss and extending the duration of effective operation
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 acid gas adsorption device maintains excellent adsorption performance over multiple cycles, extending the device's lifetime and improving adsorption efficiency.
Implementation Method 1
The vapor pressure of the deterioration inhibitor at 25° C. is 30 Pa or less
Implementation Method 2
The acid gas adsorption material can adsorb an acid gas
Implementation Method 3
The solubility of an acid gas to be a target in the deterioration inhibitor at 25° C. is 0.1 mol/kg or more
Data Source
AI summary
An acid gas adsorption device includes an acid gas adsorption part in contact with an acid gas flow passage. The acid gas adsorption part includes: an acid gas adsorption material capable of adsorbing an acid gas; and a deterioration inhibitor. The solubility of an acid gas to be a target in the deterioration inhibitor at 25° C. is 0.1 mol/kg or more. The vapor pressure of the deterioration inhibitor at 25° C. is 30 Pa or less.