US 12,291,793 B2
Steam recycle control
Alireza Saeedmanesh, San Jose, CA (US); Ehsan Raoufat, San Jose, CA (US); Ali Zargari, San Jose, CA (US); and Julio Luna, San Jose, CA (US)
Assigned to BLOOM ENERGY CORPORATION, San Jose, CA (US)
Filed by Bloom Energy Corporation, San Jose, CA (US)
Filed on Jan. 17, 2023, as Appl. No. 18/155,143.
Claims priority of provisional application 63/299,891, filed on Jan. 14, 2022.
Claims priority of provisional application 63/299,895, filed on Jan. 14, 2022.
Claims priority of provisional application 63/299,887, filed on Jan. 14, 2022.
Prior Publication US 2023/0227991 A1, Jul. 20, 2023
Int. Cl. C25B 9/00 (2021.01); C25B 1/042 (2021.01); C25B 9/19 (2021.01); C25B 9/70 (2021.01); C25B 15/025 (2021.01); C25B 15/027 (2021.01); C25B 15/08 (2006.01)
CPC C25B 15/087 (2021.01) [C25B 1/042 (2021.01); C25B 9/19 (2021.01); C25B 9/70 (2021.01); C25B 15/025 (2021.01); C25B 15/027 (2021.01)] 13 Claims
OG exemplary drawing
 
1. A solid oxide electrolyzer cell (SOEC) system comprising:
a stack of electrolyzer cells configured to receive steam in combination with hydrogen;
a hotbox, wherein the stack of electrolyzer cells are located inside of the hotbox;
a steam recycle outlet configured to recycle a portion of the steam;
a hydrogen conduit located outside of the hotbox and fluidly connected to the stack of electrolyzer cells; and
a controller;
wherein the hydrogen conduit is configured to provide external hydrogen to the stack of electrolyzer cells when the SOEC system is in startup, and the controller is configured to send commands to the SOEC system to cease providing the external hydrogen to the stack of electrolyzer cells when the SOEC system is operating at steady state or when the SOEC system detects a safety event.