CO2 Electrolysis Apparatus with Purification and Recycling
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Solution Overview
Problem
Existing carbon dioxide electrolysis devices do not effectively utilize CO2, leading to increased emissions and inefficient recycling of carbon compounds.
Innovation Solution
A carbon monoxide production device that includes a carbon dioxide electrolysis apparatus with a cathode for reducing CO2 to produce carbon monoxide and an anode for oxidizing substances, along with CO and H2 purifiers to enhance the effective use of CO2.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If CO2 is supplied to the CO production device for electrolysis, then carbon monoxide is produced from CO2 reduction, but CO2 emitted into the air without effective use increases
Solution Approach 1:
The patent recovers and recycles CO2 that would otherwise be discarded into the atmosphere. The CO2 circulation system captures CO2 from the exhaust gas of the CO production device and returns it to the CO2 supply source, enabling continuous reuse of CO2 and preventing its emission, thereby resolving the contradiction between CO production and CO2 emission reduction
Solution Approach 2:
The patent establishes a continuous CO2 circulation system where CO2 is continuously supplied to the electrolysis device, converted to CO, and the unreacted CO2 is continuously recirculated back to the supply source. This continuous cycle ensures maximum utilization of CO2 and eliminates idle emission, maintaining high productivity while minimizing loss
2Manufacturing precision
If a CO purification device is used to purify CO from the cathode gas, then CO purity is improved, but CO2 supplied for purging is emitted without effective use
Solution Approach 1:
The patent recovers CO2 from the purge gas stream that would otherwise be wasted during CO purification. The CO2 circulation system captures this purged CO2 and returns it to the CO2 supply source, preventing substance loss while maintaining the necessary purification process for CO production
Solution Approach 2:
The CO2 circulation system serves multiple functions simultaneously: it supplies CO2 to the electrolysis device, captures CO2 from purge emissions, and recycles it back to the supply source. This multi-functional system addresses both CO purification needs and CO2 conservation in a single integrated solution
3Object-affected harmful factors
If CO2 is removed from exhaust gas to reduce emissions, then CO2 emission is reduced, but the removed CO2 is not effectively utilized
Solution Approach 1:
The patent creates a continuous CO2 utilization cycle where CO2 removed from exhaust gas is continuously fed to the electrolysis device for CO production, and unreacted CO2 is continuously recirculated back to the supply source. This continuous utilization eliminates the waste associated with CO2 removal while maintaining emission reduction benefits
Solution Approach 2:
The system makes the CO2 removal process self-serving by immediately putting the removed CO2 to useful work in the electrolysis device. The CO2 that would otherwise be discarded is automatically captured and reused, making the emission control system also a resource utilization system
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 device promotes the effective use of CO2 by recycling it into carbon compounds, reducing CO2 emissions into the air, and utilizing the produced CO and H2 efficiently.
Implementation Method 1
a cathode which reduces carbon dioxide to produce carbon monoxide
Implementation Method 2
an anode which oxidizes a substance to be oxidized to produce an oxide
Implementation Method 3
A CO2 electrolysis device (CO production device) which reduces CO2 to produce a carbon compound such as carbon monoxide (CO)
Data Source
Figure 1~2
Figure 3~4
AI summary
There are provided a CO production device and a CO2 electrolysis device which allow a promotion of effective use of CO2 and a reduction in emission of CO2 into the air. A CO production device and CO2 electrolysis device 1 of an embodiment includes: a CO2 electrolysis apparatus 3 including a cathode 6 which electrolyzes CO2 to produce CO and an anode 7 which oxidizes a substance to be oxidized to produce an oxide; a CO purifier 4 which purifies CO from a gas containing CO supplied from the CO2 electrolysis apparatus 3; and a H2 purifier 5 which purifies H2 from a CO-extracted residual gas discharged from the CO purifier.