ELECTROLYZER SYSTEM INCLUDING THERMAL CONTROL COMPONENTS AND METHOD OF OPERATING SAME

    公开(公告)号:US20240301565A1

    公开(公告)日:2024-09-12

    申请号:US18597298

    申请日:2024-03-06

    摘要: An electrolyzer system includes electrolyzer cell columns each containing at least one stack of electrolyzer cells that are configured to receive a steam inlet stream and an air inlet stream, and to generate a hydrogen exhaust stream and an oxygen exhaust stream, an air recuperator heat exchanger surrounded by the electrolyzer cell columns and configured to heat the air inlet stream using the oxygen exhaust stream, a steam recuperator heat exchanger surrounded by the electrolyzer cell columns and configured to heat the steam inlet stream using the hydrogen exhaust stream, an outer column heater located radially outward of the electrolyzer cell columns and configured to radiate heat toward radially outward surfaces of the electrolyzer cell columns, and an inner column heater located radially inward of the electrolyzer cell columns, surrounding the air recuperator heat exchanger and the steam recuperator heat exchanger, and configured to radiate heat toward radially inward surfaces of the electrolyzer cell columns.

    Method for transient operation of a solid oxide electrolysis cell stack

    公开(公告)号:US20240295040A1

    公开(公告)日:2024-09-05

    申请号:US18574030

    申请日:2022-07-13

    申请人: Topsoe A/S

    IPC分类号: C25B15/00 C25B1/042 C25B9/77

    CPC分类号: C25B15/00 C25B1/042 C25B9/77

    摘要: The invention relates to a method for transient operation of a solid oxide electrolysis cell (SOEC) stack having a cathode side and an anode side, the method comprising: supplying a flush gas comprising CO2 to said anode side; and applying a small electrolysis current of 0.001-0.05 A/cm2 active cell area, such as 0.01-0.05 A/cm2 active cell area, to the cells in the SOEC stack, for thereby generating oxygen in the anode side or for transporting to the anode side any oxygen already available in the cathode side. The method comprises also operating the SOEC stack during shut-down with a flush gas comprising CO2 on the anode side, and recycling anode product gas comprising oxygen being generated under prior normal operation of the SOEC stack, with no small current being applied. By the invention it is possible to generate small amounts of O2 to safeguard the pO2 and stability of the oxy-electrode in the anode side. The invention provides protection of not only the oxy-electrode, but also the fuel electrode in the cathode side.

    Hydrogen Production System and Method of Using Same

    公开(公告)号:US20240079159A1

    公开(公告)日:2024-03-07

    申请号:US18240222

    申请日:2023-08-30

    申请人: Whole World LLC

    发明人: John Kutsch

    IPC分类号: G21H5/00 C01B3/04 C25B1/042

    摘要: A reactor block to extract hydrogen from water includes a plurality of reactor plates bonded to one another and a plurality of channels formed on at least one side of each reactor plate. Each channel is coupled to a first opening and a second opening disposed on opposite first and second edges of the reactor plate, and a radioactive coating is applied to each channel. The first opening is configured to receive gasified water and the second opening is configured to eject hydrogen generated by radiolysis of at least a portion of the gasified water as the gasified water is passed through the channel coupled to the second opening.