Simulation study of clean coal technology focused on hybrid oxide fuel cell (SOFC) and heat recovery steam generator (HRSG) in IGFC power plants

IGFC is a triple-combined power generation system combining IGCC and high temperature fuel cells. The fuel cell model have been used to this research work is based on SOFC which is integrated a heat recovery steam generator (HRSG) and gas turbine (GT) and steam turbine (ST). Three possible technological approaches to suggest the desirable in the combine cycle SOFC-HRSG and gas turbine are compared. In first approach indicates the generation of the required steam in the coupled gas turbine cycle. Then the exhaust gas from gas turbine involves driving the HRSG. And the last one involves of using exhaust gases in the HRSG which drives the steam turbine by producing steam for additional power works. HRSG is considered as a triple pressure with reheat for the taken model. This article is also delineated the analysis of coal fed instead of normal methane gas fed, for the reforming power generation based on thermodynamic processes. External reforming in SOFC-HRSG plants fueled by high quality coal enhances efficiency due to improved exhaust heat recovery and higher voltage produced by higher hydrogen partial pressure in the anode inlet. For improving the whole cycle efficiency, power output generation from both SOFC and conventional system (steam turbine and gas turbine) are described as combine system. This model is simulated by the ASPEN plus software which is able to provide thermodynamic analysis to evaluate the effect of various parameters like air flow rate, temperature and fuel flow rate on the system performance.