Acid Gas Adsorption Cooling to Suppress Oxidation Wear
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Solution Overview
Problem
Existing carbon dioxide adsorption devices suffer from oxidation deterioration and wear due to exposure to outside air during the cooling process, which prolongs the cooling time and reduces adsorption capacity.
Innovation Solution
The method involves cooling the adsorption device using a cooling medium with a temperature lower than outside air temperature, employing a cooling gas with reduced oxygen concentration and flow rate, and utilizing a honeycomb-like base material with acid gas adsorption layers to minimize oxidation and volatilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If outside air is used to cool the adsorption material layers from desorption temperature to adsorption temperature, then the cooling process is simple and uses readily available cooling medium, but the cooling time becomes excessively long and oxidation deterioration of the adsorption materials occurs due to oxygen in the outside air
Solution Approach 1:
The patent changes the temperature parameter of the cooling medium from ambient outside air temperature to a lower temperature (cooled air or refrigerated air). This parameter change enables faster heat transfer from the hot adsorption materials to the cooling medium, significantly reducing cooling time while maintaining the simplicity of using air as the cooling medium
Solution Approach 2:
The patent creates an inert or low-oxygen environment by using cooled air or refrigerated air with reduced oxygen concentration compared to outside air. This inert atmosphere prevents oxidation deterioration of the adsorption materials during the cooling process while still allowing efficient heat transfer
2Device complexity
If outside air is used for cooling the adsorption material layers, then no additional cooling system is required, but oxidation deterioration and wear of the adsorption materials occur due to oxygen and prolonged exposure time
Solution Approach 1:
The patent employs an inert or low-oxygen atmosphere by using cooled air or refrigerated air instead of ambient outside air. This creates a protective environment during cooling that prevents oxidation deterioration and wear of the adsorption materials, thereby improving their durability and reliability without significantly increasing system complexity
Solution Approach 2:
The patent modifies the temperature parameter of the cooling medium to be lower than ambient temperature. This parameter change accelerates the cooling process, reducing the duration of exposure to oxygen-containing atmosphere and thereby minimizing oxidation and wear of the adsorption materials
3Stability of the object's composition
If the adsorption material layers are cooled slowly with outside air, then the cooling process is gentle and avoids thermal shock, but the cooling time increases and adsorption capacity deteriorates due to prolonged exposure to oxygen
Solution Approach 1:
The patent changes the temperature parameter of the cooling medium to a lower value (cooled or refrigerated air). This enables faster cooling while maintaining thermal stability by providing a controlled temperature gradient, thus reducing cooling time and preventing adsorption capacity deterioration without causing excessive thermal shock
Solution Approach 2:
The patent uses cooled air or refrigerated air with lower oxygen concentration to create an inert environment during cooling. This protects the adsorption materials from oxidation deterioration that would otherwise occur during prolonged cooling with ambient air, thereby preserving adsorption capacity
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 effectively suppresses oxidation deterioration and wear of the adsorption material, shortens the cooling time, and enhances the efficiency of the adsorption process by stabilizing the adsorption capacity and reducing the overall cycle time.
Implementation Method 1
the acid gas adsorption device is cooled with a cooling medium having a temperature less than an outside air temperature
Implementation Method 2
an acid gas is caused to be adsorbed to an acid gas adsorption material by supplying a gas to be treated containing the acid gas
Implementation Method 3
the acid gas is caused to be desorbed from the acid gas adsorption material by heating the acid gas adsorption device
Data Source
AI summary
A method of capturing an acid gas includes: an adsorption step; a desorption step; and a cooling step in the stated order. In the adsorption step, an acid gas is caused to be adsorbed to an acid gas adsorption material by supplying a gas to be treated containing the acid gas to an acid gas adsorption device including the acid gas adsorption material. In the desorption step, the acid gas is caused to be desorbed from the acid gas adsorption material by heating the acid gas adsorption device. In the cooling step, the acid gas adsorption device is cooled with a cooling medium having a temperature less than an outside air temperature.