Energy and Exergy Analyses of an Integrated Biomass Gasification and SOFC System (part I): Low Temperature Gas Cleaning Technology

In this paper, a new integrated power system based on biomass gasification and solid oxide fuel cell with low temperature gas cleaning system is proposed and the performance of the system is evaluated using thermodynamic calculations. The proposed system includes a gasification unit, a gas cleaning unit, a SOFC-GT hybrid system and an organic Rankine bottoming cycle. The generated raw syngas need to be purification before it can be used in SOFC system. For this reason, low temperature gas cleaning system is selected. A sensitivity study is carried out to investigate plant responses to different working parameters. The results obtained indicate that for the current system, the gross and net energy efficiency of the system are 54.56% and 50.55% respectively, while the gross and net exergy efficiency are 48.57% and 45.08% respectively. The proposed system has been modeled using Cycle-Tempo software.