A carbon dioxide adsorption system suitable for use in an air purifier
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Solution Overview
Problem
Existing carbon dioxide adsorption systems in air purifiers require complex structures, high-concentration basic solutions, and additional discharge lines, posing safety risks and reducing flexibility due to electrochemical reactions and the need for electrodialysis units.
Innovation Solution
A simplified carbon dioxide adsorption system with separate tanks for storing basic solution, water, and chemical, allowing automatic preparation and discharge of high-concentration basic solution without additional discharge lines, eliminating the need for electrodialysis and electrochemical reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrodialysis unit is used to regenerate basic solution, then carbon dioxide adsorption efficiency is maintained, but device complexity increases and safety risks arise from hydrogen gas generation
Solution Approach 1:
The patent extracts and eliminates the electrodialysis unit from the carbon dioxide adsorption system. Instead of regenerating the basic solution through complex electrochemical processes, the system directly discharges the spent basic solution and replaces it with fresh solution, thereby removing the source of hydrogen gas generation and simplifying the overall system structure while maintaining carbon dioxide adsorption efficiency.
Solution Approach 2:
The patent adopts a disposable approach for the basic solution, treating it as a consumable resource rather than a material requiring regeneration. The basic solution is used until its carbon dioxide absorption capacity is exhausted, then discharged and replaced with fresh solution, eliminating the need for complex regeneration equipment and associated safety concerns.
2Reliability
If electrodialysis unit with ion exchange membranes is used, then basic solution regeneration is achieved, but thermal resistance is low requiring auxiliary heating/cooling elements
Solution Approach 1:
The patent removes the electrodialysis unit and ion exchange membranes from the system, eliminating the thermal resistance issues associated with these components. The system no longer requires auxiliary heating or cooling elements, simplifying the temperature control requirements while maintaining the ability to manage basic solution effectiveness through direct replacement.
3Productivity
If high-concentration basic solution is used for carbon dioxide adsorption, then adsorption efficiency increases, but chemical resistance requirements increase for selectively permeable structures
Solution Approach 1:
The patent treats the basic solution as a disposable consumable, allowing the use of high-concentration solutions that would be too aggressive for long-term use with regenerative systems. The high-concentration basic solution provides superior carbon dioxide adsorption efficiency, and since it is simply discharged and replaced rather than regenerated through chemically resistant membranes, the system can utilize more effective but chemically demanding solutions.
4Object-affected harmful factors
If discharge line is added for carbon dioxide gas and hydrogen gas, then safety is improved, but product flexibility is reduced
Solution Approach 1:
The patent eliminates the source of hydrogen gas by removing the electrodialysis unit, thereby eliminating the need for a dedicated hydrogen discharge line. The system only requires a simple discharge line for the basic solution itself, which significantly improves product flexibility while maintaining adequate safety through the removal of the electrochemical hydrogen generation process.
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
Enables efficient air purification with high-concentration basic solution, reduces safety risks, and increases flexibility by automating solution preparation and discharge, enhancing user satisfaction and safety.
Implementation Method 1
a basic solution suitable for adsorbing the carbon dioxide in the air received from the air inlet
Implementation Method 2
the reaction of carbon dioxide gas with the basic solution results in the formation of carbonate (MHCO3 and/or MCO3)
Data Source
Figure 1~2
Figure 3~4
AI summary
The present invention relates to a carbon dioxide adsorption system (1) which is suitable to be used in an air purifier purifying the air in indoor environments. The carbon dioxide adsorption system (1) comprises at least one first tank (4) which has an air inlet (2) and an air outlet (3) and which stores a basic solution suitable for adsorbing the carbon dioxide in the air.