Exergetic evaluation of an integrated gasification combined cycle power plantsimulated by seven different types of Turkish lignite

In this study, exergy analysis of an integrated gasi cation combined cycle (IGCC) operating with 7 di erent types of low rank Turkish lignite was performed. The purpose was to determine and compare the performance of each type of lignite in the same gasi er. Exergy destruction of each component and exergetic performance of the overall plant was also investigated. In addition, CO2 emissions of each type of lignite were calculated. The results showed that Yenikoy lignite had the best performance among the di erent types of lignite, with 491 MW net power and 37.88% net exergy effciency (without acid gas). It also had the minimum amount of CO2 emission at 726 kg/MWh. Therefore, Yenik oy lignite was chosen as a case study fuel and a detailed exergy analysis of its components was applied. The results showed that the major exergy destructions took place in the gasi er and the combustion chamber at 46.15% and 22.74%, respectively.