Facility for producing hydrogen via electrolysis of steam
A dual-stage heat exchanger system in the inlet pipe of the electrochemical device addresses inefficiencies in high-temperature electrolysis by recovering heat from recirculated flows, enhancing energy efficiency and reducing electric gas heater reliance.
WO2026119721A1PCT designated stage Publication Date: 2026-06-11GENVIA +4
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- GENVIA
- Filing Date
- 2025-11-28
- Publication Date
- 2026-06-11
Smart Images
Figure EP2025084681_11062026_PF_FP_ABST
Abstract
The invention relates in particular to a facility for producing dihydrogen, the facility comprising an electrochemical device (1) and a fluid network that comprises at least one inlet pipe (3) configured to convey a fluid inlet flow to the electrochemical device (1). The inlet pipe (3) is provided with a first heat exchanger (10), the first heat exchanger (10) belonging to a first heating stage (E1) for heating the inlet flow using the heat of an outgoing flow (4, 9) from the electrochemical device (1) in order to increase the heat of the fluid inlet flow through a recirculation branch, and an electric gas heater (5) positioned downstream of the first exchanger (10). The inlet pipe (3) is also provided with a second heat exchanger (20) belonging to a second heating stage (E2), the two heating stages (E1, E2) being positioned one after the other on the inlet pipe (3).
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