Porous Ceramic CO2 Filter Using CaO Capture at Low Temperature
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Solution Overview
Problem
Current carbon dioxide capture technologies, such as post-combustion capture using ethanolamine, are costly, require large infrastructure, and have limitations due to equipment corrosion, making them unsuitable for widespread application beyond coal-fired or natural gas power plants.
Innovation Solution
A carbon dioxide capture system using a ceramic filtration system composed of dolomite powder, coral powder, shell powder, pottery clay, clay, and activated carbon, which is sintered to form a porous structure rich in calcium oxide, capturing CO2 by converting it to calcium hydroxide at low temperatures through moisture generated during combustion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If post-combustion capture using ethanolamine is used, then CO2 capture is achieved, but equipment corrosion occurs and cost increases
Solution Approach 1:
The patent uses disposable ceramic filters impregnated with absorbent materials instead of reusable liquid absorbents. The ceramic filters are replaced periodically rather than regenerated, avoiding the corrosion issues associated with ethanolamine while maintaining effective CO2 capture. This approach trades the longevity of reusable systems for the reliability and simplicity of disposable components.
2Reliability
If post-combustion capture using ethanolamine is used, then CO2 capture is achieved, but large absorption and stripping towers are required increasing cost
Solution Approach 1:
The patent combines the absorption and stripping functions into a single integrated ceramic filter component. The ceramic filter simultaneously performs CO2 absorption during exhaust flow and allows for regenerative treatment in a compact configuration, eliminating the need for separate large-scale absorption and stripping towers required by conventional ethanolamine systems.
Solution Approach 2:
The patent employs porous ceramic filters with controlled pore structures to achieve high CO2 capture efficiency in a compact form factor. The porous structure provides large surface area for absorption reactions while maintaining small physical dimensions, replacing the large towers required by liquid absorbent systems.
3Reliability
If ethanolamine solution is used, then CO2 capture is achieved, but concentration is limited due to alkaline corrosion
Solution Approach 1:
The patent uses disposable ceramic filters that can be manufactured with high concentrations of absorbent materials without corrosion concerns. These filters are replaced rather than regenerated, allowing optimization of absorbent concentration for maximum CO2 capture efficiency without the corrosion limitations that constrain ethanolamine solution concentrations.
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 system achieves high-efficiency CO2 capture rates (up to 96.03%) at low costs, applicable to various devices like vehicle exhaust pipes and thermal power plants, reducing emissions and enabling recycling of captured CO2 into useful substances.
Implementation Method 1
a carbon dioxide capturing method includes the following steps... Converting calcium oxide into calcium hydroxide by moisture, generated by a combustion of the combustion heating treatment device, being captured the carbon dioxide capture materials
Implementation Method 2
Producing the carbon dioxide capture materials by mixing dolomite powder, coral powder, shell powder with pottery clay, clay, coffee grounds and activated carbon, and sintering to obtaining a porous structure rich in the calcium oxide
Data Source
AI summary
The present invention relates to a high-efficiency carbon dioxide (CO2) capture ceramic filtration system and its application method. The system includes a carbon capture exhaust pipe configured to store a CO2 capture material. The key materials of the CO2 capture material are dolomite powder, coral powder, shell powder combined with pottery clay, clay, coffee grounds, and activated carbon with the porous structure and plasticity. It constitutes a low-cost, high-efficiency filter material rich in calcium oxide for carbon dioxide capture, which can be effectively activated at low temperatures. Through the moisture generated during combustion, calcium oxide is converted into calcium hydroxide while capturing the carbon dioxide produced during the combustion. The overall application does not require additional construction of other complex filtration devices to achieve high-efficiency carbon dioxide capture rates. It can contribute to reducing carbon emissions and has extensive potential for achieving sustainable development of environmental protection.