CO2 Removal Device With H2O Concentration Control
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Solution Overview
Problem
Zeolite-based CO2 capture devices are inefficient when exposed to water vapor, requiring pre-treatment to reduce H2O concentration, which increases energy consumption and is not effectively addressed in existing methods.
Innovation Solution
A CO2 removal device that includes a CO2 capturing material capable of capturing both H2O and CO2, with an H2O measuring unit and adjustment device to control H2O concentration, allowing for efficient CO2 capture and desorption by optimizing the surface state of the capturing material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If water vapor is removed from the gas before CO2 capture, then CO2 capture efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent combines H2O capture and CO2 capture functions into a single capturing material (capturing material A that captures both H2O and CO2, or a combination of capturing material A for H2O and capturing material B for CO2). This eliminates the need for separate pre-treatment steps, thereby improving CO2 capture efficiency while reducing the energy consumption associated with multiple processing stages.
Solution Approach 2:
The patent introduces a preliminary H2O capture step using capturing material A before CO2 capture, but optimizes it by controlling H2O concentration rather than complete removal. This preliminary action prepares the gas in a controlled manner, improving subsequent CO2 capture efficiency while avoiding the excessive energy consumption of complete H2O removal.
2Productivity
If H2O concentration is reduced to 400 Ppm or less, then CO2 capture performance is improved, but the complexity of the system increases
Solution Approach 1:
The patent merges H2O capture and CO2 capture into a single integrated system using capturing material A that handles both gases, or a simplified two-material system. This integration maintains CO2 capture performance by controlling H2O concentration while reducing system complexity compared to traditional multi-stage separation systems.
Solution Approach 2:
The patent changes the control parameter from complete H2O removal to controlled H2O concentration (400 Ppm or less). This parameter change allows CO2 capture performance to be maintained while simplifying the system, as precise concentration control is less complex than complete removal mechanisms.
3Productivity
If high temperature is used for CO2 desorption, then CO2 recovery is improved, but energy consumption increases
Solution Approach 1:
The patent changes the desorption parameter from high temperature to low temperature by introducing H2O during the desorption process. This parameter change enables CO2 recovery to be achieved at lower temperatures, thereby improving CO2 recovery while significantly reducing the energy consumption associated with heating.
Solution Approach 2:
The patent uses H2O as an intermediary substance during the desorption process. The H2O facilitates CO2 desorption at lower temperatures by interacting with the capturing material, acting as a mediator that enables CO2 recovery without requiring high energy input for heating.
4Productivity
If H2O is completely removed from the gas, then CO2 capture is improved, but the loss of substance increases
Solution Approach 1:
The patent changes the H2O treatment parameter from complete removal to controlled concentration (400 Ppm or less). This parameter change maintains CO2 capture improvement while minimizing H2O loss, as the controlled concentration approach preserves most of the H2O in the gas stream.
Solution Approach 2:
The patent applies partial H2O removal rather than complete removal. By removing only enough H2O to achieve the desired concentration threshold, the system maintains CO2 capture performance while avoiding the excessive loss of H2O that would result from complete removal.
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 reduces energy consumption by lowering the desorption temperature of CO2 and minimizing the energy required for H2O removal, enhancing the overall efficiency of CO2 capture and recovery.
Implementation Method 1
a CO2 capturing material to capture H2O and CO2 in a gas
Implementation Method 2
an H2O measuring unit for measuring the concentration of H2O in the gas
Implementation Method 3
the captured CO2 is desorbed by heating the capturing material or depressurizing the interior of the capturing material container
Data Source
AI summary
A CO2 removal device includes: a CO2 capturing material which captures H2O and CO2 in a gas; a reaction container which contains the CO2 capturing material; an H2O measuring unit for measuring the concentration of H2O in the gas; an H2O concentration adjustment device which adjusts the concentration of H2O on the basis of information obtained by the H2O measuring unit; a gas introduction path introducing the gas into the reaction container from the H2O concentration adjustment device and bringing the gas into contact with the CO2 capturing material; a first gas discharge path discharging the gas from the reaction container after the gas has been brought into contact with the CO2 capturing material; and a second gas discharge path discharging the gas that has been desorbed from the CO2 capturing material from the reaction container.