Co2 adsorption device
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Solution Overview
Problem
Existing CO2 adsorption materials face a decrease in adsorption ability due to moisture adsorption, and the energy required for moisture desorption is high, leading to inefficiencies.
Innovation Solution
A CO2 adsorption device that integrates a refrigeration cycle device with a heat exchanger functioning as an evaporator to dehumidify the air before it reaches the adsorption material, using a control device to manage the operation based on air temperature and humidity, and includes a drain path to remove moisture effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a moisture adsorption material is used to prevent CO2 adsorption ability decrease, then the adsorption ability is maintained, but the energy required for heating to desorb moisture is increased
Solution Approach 1:
The invention changes the operating parameter from thermal desorption to low-temperature regeneration. The moisture adsorption material is regenerated at low temperature (0-40°C) using a desorption solvent, eliminating the need for high-temperature heating while maintaining CO2 adsorption ability.
Solution Approach 2:
The invention replaces the thermal field (heating) with a chemical field approach. Instead of using heat to desorb moisture, a desorption solvent is used to chemically interact with and remove moisture from the adsorption material at low temperatures.
2Reliability
If a moisture adsorption rotor is used to remove moisture before CO2 adsorption, then the adsorption ability is maintained, but the device complexity is increased
Solution Approach 1:
The invention makes the CO2 adsorption material itself multi-functional by equipping it with both CO2 adsorption capability and moisture resistance through the desorption solvent treatment. This eliminates the need for a separate moisture adsorption rotor, reducing device complexity while maintaining CO2 adsorption ability.
Solution Approach 2:
The invention merges the moisture removal function and CO2 adsorption function into a single integrated adsorption material. The desorption solvent-treated material simultaneously adsorbs CO2 and resists moisture, combining previously separate functions into one component.
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 device prevents a decrease in CO2 adsorption ability and achieves energy savings by eliminating the need for heating-based moisture desorption, enhancing dehumidification efficiency and reducing energy consumption.
Implementation Method 1
a compressor
Implementation Method 2
a first heat exchanger, a second heat exchanger
Implementation Method 3
allowing the second heat exchanger to function as an evaporator
Implementation Method 4
perform a dehumidification operation of allowing the second heat exchanger to function as an evaporator to cause moisture contained in the air flow to adhere to a surface of the second heat exchanger
Implementation Method 5
a granular material in which a substance such as an amine compound that adsorbs CO2 adheres to a surface of a carrier of a porous material
Data Source
AI summary
There is provided a CO2 adsorption device in which a solid adsorption material is installed, the CO2 adsorption device including: a refrigeration cycle device that circulates a refrigerant in a compressor, a first heat exchanger, a decompressor, and a second heat exchanger; and a controlling circuitry that controls an operation of the refrigeration cycle device, in which the second heat exchanger is installed on an upstream side of an air flow with respect to a location where the adsorption material is installed, and the refrigeration cycle device performs a dehumidification operation of allowing the second heat exchanger to function as an evaporator to cause moisture contained in the air flow to adhere to a surface of the second heat exchanger during an adsorption operation of adsorbing CO2.