Solid Oxide Fuel Cell Power Plants with Integrated CO2 capture

Fig.1. Planar SOFC STACK operating principle. Oxygen ”diffuses” from the air side (cathode) and reacts with the fuel, H2 and CO, produced by reforming natural gas. The air exhaust is hot oxygen depleted-air, and the fuel exhaust consists of steam, CO2 and unburned fuel whose respective concentrations depend on the inlet fuel used and on the fuel utilization. Note, the STACK elements are not drawn to scale.