Study on Zero CO2 Emission SOFC Hybrid Power System with Steam Injection

Based on a traditional SOFC hybrid power system, a zero CO₂ emission SOFC hybrid power system with steam injection is proposed in this paper and its performance is analyzed. Oxy-fuel combustion can burn the fuel gas from anode thoroughly, and increases the concentration of CO₂ gas, which will greatly reduce the energy consumption of CO₂ separation. At the same time with the steam injected into the afterburner, the efficiency of hybrid power system greatly increases. Compared with the basic SOFC hybrid system without capturing CO₂, the efficiency of new system with CO₂ capture can only be decreased by 3 percentage points. The results obtained in this paper provide useful reference for further study on high-efficient zero emission CO₂ system.