Ceramic-Coated Porous Silicone Membrane for Low-Energy CO2 Separation
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Solution Overview
Problem
Current carbon dioxide separation technologies face challenges in scalability, energy efficiency, and durability, particularly in separating carbon dioxide from large-scale waste gases like landfill gas, due to high energy consumption and limitations in membrane size and heat resistance.
Innovation Solution
A carbon dioxide separation apparatus utilizing a ceramic-coated porous silicone membrane that operates at room temperature with a low pressure difference, allowing for efficient separation of carbon dioxide from mixed gases with reduced energy consumption and increased membrane size, featuring a separation container with a porous silicone membrane and nanoceramic coating for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a membrane separation method is used to separate carbon dioxide, then energy consumption is reduced compared to distillation methods, but the membrane size is limited and scalability is restricted
Solution Approach 1:
The invention divides the membrane separation system into multiple modular units that can be stacked or arranged in series. Each unit contains a membrane module with specific separation capabilities, and multiple units work together to achieve large-scale separation. This segmentation allows the system to maintain the energy efficiency of membrane separation while scaling up the total separation capacity through additive modular configuration.
2Manufacturing precision
If aromatic polyimide membrane is used for gas separation, then separation performance is improved, but heat resistance and durability deteriorate due to high manufacturing temperature requirements
Solution Approach 1:
The invention employs composite membrane structures that combine aromatic polyimide layers (for high separation performance) with thermally stable support layers or coating materials (such as ceramic coatings or heat-resistant polymers). This composite approach allows the membrane to achieve the desired CO2 separation performance while the thermally stable components provide enhanced heat resistance and durability, enabling the membrane to withstand high-temperature environments without degradation.
3Quantity of substance
If cryogenic air separation method is used, then large amount of liquefied carbon dioxide can be produced, but energy consumption increases due to cooling requirements
Solution Approach 1:
The invention changes the operating parameters from cryogenic temperatures to ambient or moderately elevated temperatures by using thermally stable membrane materials. This parameter change allows CO2 separation and liquefaction to occur without the extensive cooling energy requirements of cryogenic methods. The membrane separation process operates isothermally or with minimal temperature variation, dramatically reducing the energy input needed while still achieving high CO2 recovery quantities through continuous operation and large membrane surface areas.
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 apparatus achieves high-purity carbon dioxide separation with low energy consumption and ease of installation, even in challenging environments, by utilizing a ceramic-coated porous silicone membrane that operates at low pressure, enabling efficient and cost-effective carbon dioxide collection from large-scale waste gases.
Implementation Method 1
a porous silicone membrane that separates carbon dioxide from a mixed gas
Implementation Method 2
coated with nanoceramic having an affinity for carbon dioxide
Data Source
AI summary
Provided are an apparatus for separating and collecting carbon dioxide and a method of separating carbon dioxide, and more particularly, an apparatus and method of selectively separating carbon dioxide from a byproduct gas using a difference in negative pressure and a difference in carbon dioxide concentration between the inside of a separator, which is made of a ceramic-coated porous silicone membrane and in which the byproduct gas flows, and the outside of the separator in which carbon dioxide is collected.