Plasma-Assisted CO2 Capture and Conversion Process
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Solution Overview
Problem
Conventional methods for CO2 capture and conversion require high energy, leading to low efficiency and high operational costs due to the stability of CO2 molecules, necessitating the exploration of alternative methods like electrochemical, solar chemical, and biochemical conversions.
Innovation Solution
A non-thermal plasma-based process that combines CO2 capture and conversion using a sorbent and plasma reactor, where CO2 is desorbed and converted to CO in a single step within the plasma reactor, reducing process complexity and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional high temperature and pressure methods are used to dissociate CO2, then CO2 conversion is achieved, but energy efficiency is low and operation and maintenance cost is high
Solution Approach 1:
The invention changes the physical and chemical parameters of the CO2 conversion process by using plasma technology instead of conventional high temperature and pressure methods. The plasma process operates at lower temperatures while maintaining effective CO2 dissociation, thereby improving energy efficiency while achieving the required conversion quantity.
Solution Approach 2:
The invention replaces the mechanical thermal system (high temperature and pressure) with a plasma-based system. The plasma process uses electromagnetic fields to generate reactive species that dissociate CO2 at lower thermal conditions, substituting the conventional mechanical approach with a more energy-efficient plasma mechanism.
2Quantity of substance
If conventional high temperature and pressure methods are used to dissociate CO2, then CO2 conversion is achieved, but operation and maintenance cost is high
Solution Approach 1:
The invention changes the operating parameters from extreme high temperature and pressure conditions to milder plasma conditions. This parameter change simplifies the equipment requirements, reduces material stress, and lowers operation and maintenance costs while maintaining effective CO2 conversion.
Solution Approach 2:
The invention substitutes the complex high temperature and pressure mechanical system with a plasma system that operates under simpler conditions. This substitution reduces equipment complexity, lowers maintenance requirements, and decreases operational costs while achieving the same CO2 conversion objective.
3Reliability
If separate processes are used for CO2 capture and conversion, then each process can be optimized, but process complexity increases
Solution Approach 1:
The invention merges the CO2 capture and conversion processes into a single integrated plasma-based system. The plasma process simultaneously captures CO2 from the gas stream and converts it to CO, eliminating the need for separate capture and conversion units and thereby reducing overall process complexity.
Solution Approach 2:
The plasma reactor performs multiple functions simultaneously: it acts as both a CO2 capture device and a CO2 conversion reactor. This multi-functionality reduces the number of separate process units needed, simplifying the overall system while maintaining the ability to optimize performance.
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
This approach achieves efficient CO2 capture and conversion with improved energy efficiency and reduced operational costs, enabling the production of valuable chemicals like syngas and hydrocarbons, aligning with the 'power to gas' concept for renewable energy storage.
Implementation Method 1
applying plasma conditions on the CO2 adsorbed sorbent to allow for desorption of CO2 from the CO2 adsorbed sorbent and conversion to CO
Implementation Method 2
The energetic electrons in plasma are capable to activate molecules through ionization, excitation and dissociation
Implementation Method 3
The energetic electrons in plasma are capable to activate molecules through ionization, excitation and dissociation
Implementation Method 4
adsorbing CO2 from the CO2 containing gas flow on a sorbent
Data Source
AI summary
The present invention relates to a process for CO2 capture and production of CO. The present invention also relates to an apparatus for CO2 capture and production of CO. An object of the present invention is to provide a sustainable process for the capture CO2 and convert it into CO. Another object of the present invention is to provide a process for the direct production of valuable chemicals through capture and conversion of CO2.