US 12,221,709 B2
High temperature electrolyser system optimised by an intermediate circuit recovery module
Pierre Dumoulin, Grenoble (FR); and Nicolas Tauveron, Grenoble (FR)
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
Appl. No. 18/682,345
Filed by COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, Paris (FR)
PCT Filed Aug. 8, 2022, PCT No. PCT/EP2022/072269
§ 371(c)(1), (2) Date Feb. 8, 2024,
PCT Pub. No. WO2023/016998, PCT Pub. Date Feb. 16, 2023.
Claims priority of application No. 2108605 (FR), filed on Aug. 10, 2021.
Prior Publication US 2024/0263317 A1, Aug. 8, 2024
Int. Cl. C25B 1/042 (2021.01); C25B 9/67 (2021.01); C25B 15/021 (2021.01); C25B 15/08 (2006.01)
CPC C25B 1/042 (2021.01) [C25B 9/67 (2021.01); C25B 15/021 (2021.01); C25B 15/08 (2013.01); Y02E 60/36 (2013.01); Y02E 60/50 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A system, comprising:
a high temperature electrolyser,
a first supply line of the electrolyser configured to supply the electrolyser with steam,
a first discharge line of the electrolyser configured to discharge dihydrogen from the electrolyser,
a second discharge line of the electrolyser configured to discharge dioxygen from the electrolyser,
a first heat exchange module configured to ensure a heat exchange between the first supply line and the first discharge line,
a first module configured to recover thermal energy from the dihydrogen at an outlet of the first heat exchange module to be supplied to the first supply line, the first module comprising:
a first intermediate exchanger arranged on the first discharge line downstream from the first heat exchange module and configured to transfer the thermal energy from the dihydrogen to a first intermediate fluid,
a first intermediate steam generator arranged on the first supply line configured to transfer the thermal energy from the first intermediate fluid output from the first intermediate exchanger to liquid water, and
a first intermediate fluid circuit configured to receive the first intermediate fluid and ensure a fluid connection between the first intermediate exchanger and the first intermediate steam generator,
a third module for recovering the thermal energy from the dihydrogen at the outlet of the first heat exchange module to be supplied to the first supply line, the third module comprising a heat pump and an intermediate circuit, the intermediate circuit comprising:
a second intermediate exchanger arranged on the first discharge line downstream from the first heat exchange module and configured to transfer the thermal energy from the dihydrogen to a second intermediate fluid, and
a third intermediate fluid circuit configured to receive the second intermediate fluid and ensure a fluid connection between the second intermediate exchanger and an evaporator of the heat pump, the heat pump comprising:
a fluid circuit configured to receive a heat-transfer fluid, the evaporator arranged on the third intermediate fluid circuit and configured to transfer the thermal energy from the second intermediate fluid to the heat-transfer fluid,
a compressor configured to compress the heat-transfer fluid,
a condenser arranged on the first supply line upstream from the first heat exchange module and configured to transfer the thermal energy from the heat-transfer fluid to the liquid water, and
a reducer configured to reduce the heat-transfer fluid, the fluid circuit being configured to fluidically connect the evaporator to the compressor, the compressor to the condenser, the condenser to the reducer and the reducer to the evaporator, and
a fifth intermediate exchanger arranged on the first discharge line downstream from the second intermediate exchanger and in parallel with the second intermediate exchanger on the third intermediate fluid circuit and configured to transfer the thermal energy from the dihydrogen to the second intermediate fluid, wherein the third intermediate circuit is configured to receive the second intermediate fluid from the fifth intermediate exchanger and ensure a fluid connection between the fifth intermediate exchanger and the evaporator of the heat pump.