Oyster Shell Ceramic CO2 Capture Filter
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Solution Overview
Problem
Current CO2 capturing technologies, such as absorptive methods using ethanolamine, are inefficient and costly, particularly when dealing with low CO2 partial pressure emissions and require complex facilities, while also posing oxidative damage to equipment.
Innovation Solution
A ceramic-based filtration system utilizing powdered oyster shells and clay, sintered into porous ceramics containing calcium oxide (CaO), which reacts with water vapor to form calcium hydroxide and subsequently captures CO2 to form calcium carbonate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If absorptive method using ethanolamine is used, then CO2 capturing can be achieved, but device complexity increases and corrosive damage occurs to equipment
Solution Approach 1:
The patent uses ceramic materials containing calcium oxide as the capturing medium, which can be easily replaced and is cost-effective. The ceramic material is placed in a simple container that can be discarded or replaced when saturated, avoiding the need for complex recovery systems.
Solution Approach 2:
The patent extracts the CO2 capturing function from complex chemical absorption systems and implements it through a simple ceramic material that reacts with CO2. The capturing mechanism is simplified to a direct chemical reaction between calcium oxide and CO2, eliminating the need for complex ethanolamine-based absorption systems.
2Reliability
If absorptive method using ethanolamine is used, then CO2 capturing can be achieved, but equipment is oxidatively damaged over time
Solution Approach 1:
The ceramic material containing calcium oxide serves as a disposable or easily replaceable component. When the material becomes saturated with calcium carbonate, it can be replaced with fresh material, avoiding the need to manage corrosive absorbents that cause oxidative damage to equipment.
Solution Approach 2:
The patent converts the harmful effect of corrosive absorbents into a beneficial process by using ceramic materials that react with CO2 to form stable calcium carbonate. This eliminates the oxidative damage problem while maintaining CO2 capturing efficiency.
3Reliability
If ceramic based CO2 capturing materials are used, then CO2 capture efficiency increases and cost decreases, but manufacturing process becomes more complex
Solution Approach 1:
The patent uses composite ceramic materials made from calcium oxide and other ceramic components. These materials are manufactured through standard ceramic processing techniques, combining multiple materials to achieve the desired CO2 capturing properties while maintaining manufacturability.
Solution Approach 2:
The patent optimizes the chemical composition and physical structure of the ceramic material by controlling parameters such as calcium oxide content, pore size, and sintering temperature. These parameter adjustments enhance CO2 capturing efficiency while keeping the manufacturing process within standard industrial capabilities.
4Productivity
If oyster shells are not recycled, then environmental cleanup burden increases, but recycling them for CO2 capturing creates new application value
Solution Approach 1:
The patent recovers and reuses oyster shell waste by converting it into ceramic CO2 capturing materials. Instead of discarding the shells as waste, they are processed into functional materials that actively capture CO2, creating economic and environmental value from what would otherwise be waste.
Solution Approach 2:
The patent converts oyster shell waste, which creates environmental cleanup burdens, into a beneficial CO2 capturing material. The waste shells are transformed into ceramic materials that actively reduce atmospheric CO2, turning an environmental problem into a solution.
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 a high-efficient CO2 capture rate of 96.03% at low cost, is environmentally friendly, and can be easily integrated into various combustion systems, promoting environmental sustainability and reducing carbon emissions.
Implementation Method 1
water vapor (H2O) known as by-products of combustion will chemically converts the CaO based ceramics into calcium hydroxide [(Ca(OH)2]}]
Implementation Method 2
CO2+Ca(OH)2→CaCO3(s)+H2O
Implementation Method 3
the CO2 capturing materials contains a large amount of calcium oxide (CaO) that can react with water vapor (H2O) to form calcium hydroxide [Ca(OH)2] which simultaneously captures CO2
Data Source
AI summary
A ceramic based high-efficient carbon dioxide capture ceramic filtration system and an application method thereof, comprising: a carbon capturing exhaust pipe used to store a CO2 capturing materials therein, wherein the CO2 capturing materials mainly uses oyster shells as the main materials, combined with the porous structure and plasticity of clay. It constitutes a low-cost, high-efficient carbon dioxide capture filter material which has a lot of calcium oxide (CaO), that can be effectively triggered in a low-temperature working environment, convert calcium oxide into calcium hydroxide through the water vapor generated during combustion. At the same time, the carbon dioxide produced during combustion is captured. The overall application can achieve high-efficient carbon dioxide capture rate without the need to build other complex filtration devices, which can help reduce carbon emissions and achieve sustainable development of environmental protection.