Plasma Decomposition Resource Recovery System for CO2 Reduction
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Solution Overview
Problem
Current methods are inadequate in efficiently reducing carbon dioxide emissions and simultaneously producing valuable industrial coproducts, as they often require additional resources and incur high costs for catalysts and energy.
Innovation Solution
A resource recovery system that utilizes seawater to produce fresh water and salts, which are then processed through plasma decomposition units to generate hydrogen, sodium hydroxide, and carbon dioxide, allowing for power generation and coproduct production, including chlorine gas, sodium hydroxide, and carbon, while capturing and utilizing atmospheric carbon dioxide.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional carbon dioxide reduction methods are used, then carbon dioxide emissions are reduced, but additional resources and high costs for catalysts and energy are required
Solution Approach 1:
The system uses seawater as a free resource to produce hydrogen through photolysis, which then serves as fuel for power generation. The generated electricity powers the carbon dioxide reduction process, creating a self-sustaining energy cycle that eliminates external energy costs.
Solution Approach 2:
The patent changes the chemical parameters by using photolysis to split seawater into hydrogen and oxygen, then using the hydrogen in fuel cells to generate electricity. This electrical energy is used to reduce carbon dioxide to carbon monoxide and further to hydrocarbons, transforming the energy state throughout the system.
2Object-affected harmful factors
If conventional carbon dioxide reduction methods are used, then carbon dioxide emissions are reduced, but additional resources and high costs for catalysts and energy are required
Solution Approach 1:
The system generates its own chemical catalysts through the photolysis of seawater, which produces hydrogen that then generates electricity for the reduction process. The iron catalyst used in the reduction step is regenerated in situ through the chemical reactions, eliminating the need for external catalyst supply.
Solution Approach 2:
The patent uses an asymmetric approach by employing photolysis (light-driven chemical reaction) rather than conventional thermal methods, creating an asymmetric energy pathway that is more efficient and less resource-intensive than traditional symmetric combustion-based approaches.
3Object-affected harmful factors
If carbon dioxide is captured and converted, then atmospheric carbon dioxide concentration is reduced, but external energy and resources are required
Solution Approach 1:
The system performs multiple functions using the same resource: seawater is used for both power generation (through hydrogen production) and as a source of chemicals for carbon dioxide conversion. The iron catalyst serves both as a reaction medium and is regenerated in situ, demonstrating multi-functionality.
Solution Approach 2:
The system converts carbon dioxide, traditionally viewed as a harmful waste product, into valuable hydrocarbon fuels and chemicals. The harmful carbon dioxide is transformed into useful products like methane, ethanol, and other hydrocarbons that can be used as energy sources, turning an environmental problem into an economic opportunity.
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 system effectively reduces carbon dioxide emissions, generates valuable industrial coproducts, and reduces the need for external resources and catalysts, providing environmental and economic benefits by using seawater and atmospheric carbon dioxide, while minimizing energy costs and environmental impact.
Implementation Method 1
the seawater is transported to an evaporation unit to produce fresh water and salts
Implementation Method 2
the salt is delivered to a first plasma decomposition unit and decomposed into sodium and chlorine
Implementation Method 3
the sodium is sent and mixed with water in a hydrolysis unit to get pure hydrogen and sodium hydroxide
Implementation Method 4
delivered to a power generation unit for power generation
Implementation Method 5
react with carbon dioxide from the atmosphere and produce a mixture of sodium carbonate and sodium bicarbonate
Implementation Method 6
the mixture is delivered to an electric heating unit and broken into carbon dioxide and sodium hydroxide
Implementation Method 7
The carbon dioxide is sent to a second plasma decomposition unit and decomposed into carbon and oxygen gas
Data Source
AI summary
A resource recovery system for reducing carbon dioxide emissions is revealed. Salt is delivered to a first plasma decomposition unit and decomposed into sodium and chlorine. The sodium is sent to a hydrolysis unit and mixed with water to get pure hydrogen and sodium hydroxide which are respectively sent to a power generation unit for power generation and a carbon dioxide absorption unit to react with carbon dioxide from air and produce a mixture of sodium carbonate and sodium bicarbonate. Then the mixture is delivered to an electric heating unit and broken into carbon dioxide and sodium hydroxide. The carbon dioxide is sent to a second plasma decomposition unit and decomposed into carbon and oxygen gas which is delivered to the power generation unit for generating power. Thereby catalysts, power required, and coproducts are obtained during operation of the system. Therefore, the system offers energy, environmental, and economic benefits.