System and method for treating flue gas of boiler based on solar energy
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Solution Overview
Problem
Current methods for treating boiler flue gas, such as absorption, adsorption, and membrane separation, are inefficient in reducing CO2 emissions and face challenges like high transportation costs and complex systems, and do not effectively address air pollution from sulfur oxides, nitrogen oxides, and dust.
Innovation Solution
A system utilizing solar energy, including a parabolic concentrator, photovoltaic cells, heat pumps, and electrolysis chambers, to convert CO2 into liquid and gas phase hydrocarbon fuel products, separate and store carbon monoxide, hydrogen, and ethylene, and recycle electrolytes, achieving desulfurization, denitrification, and emission reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional separation methods (absorption, adsorption, membrane separation) are used to separate CO2 from flue gas, then CO2 can be separated and stored, but the system becomes complex and transportation costs increase significantly
Solution Approach 1:
The patent changes the chemical state of CO2 from gaseous to liquid phase through electrochemical reduction, transforming it from a waste product requiring transportation into valuable liquid hydrocarbon fuels that can be directly utilized, thereby eliminating the need for complex storage and transportation infrastructure
Solution Approach 2:
The invention converts harmful CO2 emissions into beneficial liquid hydrocarbon fuels through electrochemical reduction, turning a waste disposal problem into a resource generation solution, thus eliminating both the harm of CO2 emissions and the need for complex storage systems
2Object-generated harmful factors
If CO2 is stored underground or in water, then CO2 emissions are temporarily reduced, but the stored CO2 will slowly release back and transportation costs are high
Solution Approach 1:
The patent transforms CO2 from a harmful emission into a valuable resource by converting it into liquid hydrocarbon fuels through electrochemical reduction, eliminating the need for energy-intensive transportation and storage infrastructure while creating useful energy carriers
3Object-generated harmful factors
If conventional flue gas treatment methods are used, then some pollutants can be removed, but they do not effectively address air pollution from sulfur oxides, nitrogen oxides, and dust
Solution Approach 1:
The patent integrates multiple treatment functions into a single electrochemical system that simultaneously removes CO2, sulfur oxides, nitrogen oxides, and dust from flue gas, converting them into valuable chemical products while achieving comprehensive pollution control in one process unit
4Use of energy by moving object
If solar energy is used to power the electrolysis system, then renewable energy utilization is improved, but the system requires complex energy management and storage components
Solution Approach 1:
The patent combines photovoltaic power generation and thermal energy collection into an integrated energy supply system that directly powers the electrochemical reduction process, merging electricity generation and heat supply functions to reduce the need for separate energy storage and management components
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 utilizes solar energy to convert CO2 into stable hydrocarbon fuels, reducing boiler pollutants and emissions, enhancing energy utilization and conservation while providing targeted treatment for flue gas components.
Implementation Method 1
a photovoltaic cell attached to the heat collector to absorb the sunlight and photoelectrically convert the sunlight into electrical energy
Implementation Method 2
a heat pump connected to the heat collector via a first valve and a second valve for thermal circulation
Implementation Method 3
a carbon dioxide electrolysis chamber connected to the flue gas pretreatment chamber and the power distribution control module for electrolyzing and reducing carbon dioxide in the flue gas by the direct current to generate liquid phase hydrocarbon fuel products and gas phase hydrocarbon fuel products
Implementation Method 4
a parabolic concentrator configured to gather sunlight
Data Source
AI summary
A system and method for treating flue gas of a boiler based on solar energy are provided, wherein a heat pump is connected with a heat collector via first and second valves, a carbon dioxide electrolysis chamber is connected with a flue gas pretreatment chamber and a power distribution control module for electrolyzing and reducing carbon dioxide, a gas phase separation chamber is connected with a gas phase outlet to separate a mixture, and discharge the separated gas phase products; a Fischer-Tropsch reaction chamber is connected with the gas phase separation chamber to pass the separated carbon monoxide and hydrogen into a flowing reaction cell, a liquid phase product separation chamber is connected with a liquid phase outlet to separate the liquid phase hydrocarbon fuel products, and separate and supplement electrolyte; an electrolyte cooling circulation chamber is connected with the liquid phase product separation chamber.