Hydrogen production apparatus and hydrogen production method
The hydrogen production device with pulsed water injection and waste heat utilization in solid oxide electrolysis cells addresses inefficiencies in steam utilization and power load followability, achieving efficient and compact hydrogen production from renewable energy.
WO2026009969A1PCT designated stage Publication Date: 2026-01-08INSTITUTE OF SCIENCE TOKYO
Patent Information
- Application Number
- PCT/JP2025/024115
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-07-05
- Filing Date
- 2025-07-04
- Publication Date
- 2026-01-08
Smart Images
Figure JP2025024115_08012026_PF_FP_ABST
Abstract
The present invention addresses the problem of providing a hydrogen production apparatus using a solid oxide electrolysis cell, in which the water vapor utilization rate is high, and followability of a change in water vapor supply flow rate with respect to a power load fluctuation is good . The present invention also addresses the problem of providing a hydrogen production method using the hydrogen production apparatus. A hydrogen production apparatus 10 has a reactor R in which a solid oxide type electrolysis cell 10 is installed, the solid oxide type electrolysis cell 10 including: a water vapor electrode 20 in which an electrolytic reaction of water vapor occurs; a gas-impermeable and ion-permeable solid oxide electrolyte 40; and a counter electrode 30 in which a reaction of a charge carrier that is generated through the electrolytic reaction in the water vapor electrode 20 and that passes through the solid oxide electrolyte 40 occurs. The hydrogen production apparatus 10 has an injector 23 that supplies water in a pulsed manner to the water vapor electrode 20 side of the reactor R. The above problems are solved by supplying water to the water vapor electrode 20 in a pulsed manner.
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Citation Information
Patent Citations
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