SULFUR MANAGEMENT AND UTILIZATION IN MOLTEN METAL ANODE SOLID OXIDE FUEL CELLS FUELS CELLS

摘要

Embodiments of a molten metal anode solid oxide fuel cell (MMA-SOFC) system comprise a first MMA-SOFC and a second MMA-SOFC, a fuel contactor integral with the first MMA-SOFC or in fluid communication with the first MMA-SOFC, a molten metal conduit configured to deliver molten metal from a first molten metal anode to a second molten metal anode, and one or more external electric circuits, wherein a first molten metal anode is configured to oxidize molten metal to produce metal oxides and electrons, the fuel contactor is configured to reduce the metal oxides and produce metals and metal sulfides in the molten metal upon reaction with sulfur-containing fuel. The second molten metal anode is configured to oxidize the metal sulfides in the metal sulfides-containing molten metal to produce metals and electrons, and the external electric circuits are configured to generate power from the electrons produced in the first and second MMA-SOFCs.

主权项

1. A molten metal anode solid oxide fuel cell (MMA-SOFC) system comprising:
a first MMA-SOFC comprising a first cathode, a first molten metal anode, and a first solid electrolyte disposed between the first cathode and the first molten metal anode; a second MMA-SOFC comprising a second cathode, a second molten metal anode, and a second solid electrolyte disposed between the second cathode and the second molten metal anode; a molten metal conduit configured to deliver molten metal from the first molten metal anode to the second molten metal anode; a fuel contactor integral with the first MMA-SOFC or in fluid communication with the first MMA-SOFC; and one or more external electric circuits, wherein
the first molten metal anode comprises an oxidation region configured to oxidize the molten metal to produce metal oxides and electrons, andthe fuel contactor comprises a regeneration region configured to reduce the metal oxides and produces metal sulfides in the molten metal upon reaction with sulfur-containing fuel;the second molten metal anode is configured to oxidize the metal sulfides in the metal sulfides-containing molten metal to produce metals and electrons; andthe external electric circuits are configured to generate power from the electrons produced in both the first MMA-SOFC and the second MMA-SOFC.