Method for recovering carbon dioxide and carbon dioxide recovery system
The method enhances carbon dioxide recovery by controlling electrolyte pH and temperature in an electrolysis system, addressing inconsistent recovery in existing technologies and enabling efficient carbon dioxide and hydrogen capture.
JP2025166373APending Publication Date: 2025-11-06KAJIMA CORP
Patent Information
- Application Number
- JP2024070354
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-11-06
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Figure 2025166373000001_ABST
Abstract
To provide a method for recovering carbon dioxide which uses electrolysis of water and can reliably ensure recovery.SOLUTION: A method for recovering carbon dioxide comprises: an aeration step of aerating an alkaline cathode-side electrolyte 35B taken out from a cathode chamber 32B of an electrolytic device and produced by electrolysis of water with a gas containing carbon dioxide; an acidification step of acidifying the aerated cathode-side electrolyte 35B; and a carbon dioxide recovery step of heating the acidified cathode-side electrolyte 35B to recover carbon dioxide released as gas. By controlling dissolution and release of carbon dioxide with respect to the cathode-side electrolyte 35B in each step, carbon dioxide can be efficiently recovered.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
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