公开(公告)号：US20250006963A1

公开(公告)日：2025-01-02

申请号：US18577668

申请日：2022-03-17

Applicant: Technische Universität München

Inventor： Stephan HERRMANN ,  Felix FISCHER ,  Hartmut SPLIETHOFF ,  Maximilian HAUCK ,  Jeremias WEINRICH

IPC: H01M8/0612 ,  H01M8/04014 ,  H01M8/04082 ,  H01M8/04119 ,  H01M8/04701 ,  H01M8/04746 ,  H01M8/0668

Abstract: The invention concerns a method of operating a fuel cell system (1) in fuel cell mode, the fuel cell system (1) comprising at least one fuel cell (2) comprising an anode (2a), a cathode (2b) and an electrolyte (2c) provided between the anode (2a) and the cathode (2b), the fuel cell (2) being arranged for an internal reformation of hydrocarbon compounds inside the anode (2a), an anode exhaust conduit (4) connecting the anode outlet (2d) and a fuel conduit (6) and comprising a methanation unit (3a), a water-gas shift reactor (3b), and a water vapor condenser or water removal unit (12), the anode exhaust conduit (4) or the fuel conduit (6) comprising a carbon dioxide separation unit (11), and the fuel conduit (6) connecting a fuel cell system inlet (7) and an anode inlet (2e), the method comprising the steps of a) feeding feed gas into the fuel conduit (6) via the fuel cell system inlet (7), the feed gas comprising hydrocarbon compounds, b) controlling the methanation unit (3a) to produce methane and controlling the water gas shift reactor (3b) to produce hydrogen so that in a feed gas mixture supplied to the anode inlet (2e) a molar ratio of hydrogen to carbon at a selected operation temperature of the fuel cell (2) prevents the formation of solid carbon, wherein the molar ratio of oxygen to carbon in the feed gas mixture supplied to the anode inlet is smaller than 1, preferably smaller than 0.1, c) wherein carbon dioxide is separated from an anode exhaust or the feed gas mixture in the carbon dioxide separation unit (11), wherein water is not added to the feed gas or the feed gas mixture supplied to the anode inlet (2e), and wherein water vapor contained in the anode exhaust is separated in a water vapor condenser or water removal unit (12).

公开(公告)号：US20240243318A1

公开(公告)日：2024-07-18

申请号：US18557581

申请日：2022-03-02

Applicant: Technische Universität München

Inventor： Stephan HERRMANN ,  Felix FISCHER ,  Hartmut SPLIETHOFF ,  Maximilian HAUCK ,  Jeremias WEINRICH

IPC: H01M8/0637 ,  C07C1/10 ,  C25B1/042 ,  H01M8/04014 ,  H01M8/04119 ,  H01M8/04791 ,  H01M8/0612 ,  H01M8/18

CPC classification number: H01M8/0637 ,  C07C1/10 ,  C25B1/042 ,  H01M8/04014 ,  H01M8/04164 ,  H01M8/04798 ,  H01M8/0625 ,  H01M8/186 ,  H01M2250/402

Abstract: A fuel cell system arranged for the conversion of pure hydrogen comprising a) at least one fuel cell comprising an anode, a cathode and an electrolyte, and arranged for an internal reformation of methane, b) a fuel conduit connecting a fuel conduit inlet with an anode inlet, c) an anode exhaust conduit connecting an anode outlet and a methanation unit capable of producing methane from anode exhaust, and d) a methanation unit exhaust conduit connecting a methanation unit exit and the fuel conduit, and e) a water removal and/or water condenser unit coupled to the methanation unit exhaust conduit, wherein the fuel introduced into an inlet of the fuel conduit is pure hydrogen, and the amount of methane produced in the methanation unit is equal to the amount of methane reformed inside of the fuel cell so that the content of methane cycling through the fuel cell system is constant.

公开(公告)号：US20230392089A1

公开(公告)日：2023-12-07

申请号：US18031759

申请日：2021-09-28

Applicant: Technische Universität München

Inventor： Stephan HERRMANN ,  Felix FISCHER ,  Hartmut SPLIETHOFF

IPC: C10K3/00

CPC classification number: C10K3/001

Abstract: The present invention relates to an improved methanation process, wherein energy released during the methanation process is used to drive a turbocharger to drive and/or maintain the process. The present invention is further concerned with a system for the production of methane-enriched gas and power from hydrogen and carbon-containing starting materials comprising at least one methanation reactor and at least one turbocharger.

公开(公告)号：US20200153013A1

公开(公告)日：2020-05-14

申请号：US16610470

申请日：2018-04-26

Applicant: Technische Universität München

Inventor： Stephan HERRMANN ,  Hartmut SPLIETHOFF ,  Matthias GADERER

IPC: H01M8/0612 ,  H01M8/18 ,  H01M8/04014 ,  H01M8/0637 ,  C01B3/48 ,  H01M8/04746 ,  H01M8/04089

Abstract: A fuel cell system comprising at least one fuel cell arranged for a reformation of a hydrocarbon and a hydrocarbon generation unit connected to an anode outlet of the fuel cell for generating the hydrocarbon from carbon monoxide and hydrogen included in a partially unconverted exhaust stream of the anode outlet of the fuel cell, where the fuel cell is thermally decoupled from the hydrocarbon generation unit so that the exothermal hydrocarbon generation reaction and the endothermal reformation reaction proceed without one reaction thermally interfering the other.