Feasibility of CO₂ Reforming SOFC System

Abstract

Performance of the SOFC single cell with the CO 2 reforming catalyst was investigated utilizing CH 4 /CO 2 . It was found that the voltage in CH 4 /CO 2 was comparatively high against conventional steam reforming conditions even in high fuel utilization ranges. The process simulation was conducted to the model of 1 kW CO 2 reforming SOFC system with anode off gas recycling. The simulation results such as heat balance and recycling procedure suggested that the CO 2 reforming could be one of the feasible approach for high electrical efficiency SOFC system.

Evaluation of Performance and Heat Balance of Dry Reforming SOFC System

“…in dummy = in dummy × in HHV × 60 3.6 [5] in sim = in dummy + Heater + dummy [6] in sim = in dummy × in sim in dummy [7] The simulated heat value of inlet city gas (Q in sim ) describes the total input energy of simulated power generation. The inlet water flow in steam reforming (F H2O dummy ) and inlet CO 2 flow in dry reforming (F CO2 dummy ) were calculated with Equation 8 and 9, respectively.…”

“…CO 2 reforming (known as dry reforming) is a promising option for SOFC systems, simplifying the process due to the compacted water supply circulation system compared to steam reforming. Moreover, dry reforming is attractive for use in biogas-fueled SOFCs because biogas already contains CO 2 (3)(4)(5), which can be used via CO 2 recirculation from the anode off-gas system (6) or a CO 2 reutilization system from carbon capture system. Dry reforming is described by Equation 1, in which two moles of H 2 and CO are generated from one mole of CH 4 and CO 2 .…”