Abstract
We predicted the available maximum power output of Integrated gasification combined cycle (IGCC) plants under the operating limitations of a gas turbine. The power block of the IGCC using an F-class gas turbine was modeled, and its interactions of mass and energy with other components such as a gasifier and an air separation unit were considered. Variation in the gas turbine power output with nitrogen dilution was simulated, and the operating conditions under which the power should be limited below an allowable maximum were determined. The maximum net power output of the IGCC plant under the restrictions of syngas turbine power (232 MW) and blade temperature were estimated in a wide range in terms of ambient temperature and integration degree, and the optimal integration degree for each ambient temperature is suggested. At relatively high temperatures over 19°C, zero integration degree (air for the air separation unit is supplied solely from the ambient) provides the highest net power output and efficiency. As ambient temperature decreases, a higher integration degree provides higher net power. The optimal net IGCC power output varies from 260 MW to 347 MW (33%) in the ambient temperature range of 40°C to -10°C, while the optimal net efficiency varies by about one percentage point.
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This paper was submitted to the Journal of Mechanical Science and Technology after revisions to the paper presented in the ASME Turbo Expo 2014 (ASME paper GT2014-26911) with the permission of the ASME
D. W. Kang received Ph.D. from Department of Mechanical Engineering, Inha University in 2015. He has been with Dept. of Extreme Energy System, in Korea Institute of Machinery & Materials since 2015. His research interests are design and analysis of gas turbine based power generation system.
C. M. Kim received M.S. degree from Department of Mechanical Engineering, Inha University in 2015. His major research topic during his study at Inha University was IGCC plant performance analysis. He has been with Vehicle Components Division, in LG electronics Inc. since 2015, where he researches HVAC of vehicle system.
J. H. Lee received his B.S. degree from the Department of Mechanical Engineering, Inha University, in 2015 and is currently a master’s degree student in the same department. His major research topic is the performance diagnosis of combined cycle power plant.
T. S. Kim received his Ph.D. degree from Dept. of Mechanical Engineering, Seoul National University in 1995. He has been with Dept. of Mechanical Engineering, Inha University since 2000. His research interests are design and analysis of advanced energy systems including gas/steam turbine based power plants.
Jeong L. Sohn received Ph.D. from Department of Mechanical Engineering, the University of Alabama in Huntsville in 1986. He has experiences in gas turbine development, research and education in the area of gas turbine based power generation systems. He is serving as a Director of Gas Turbine Research Center in Korea Institute of Machinery & Materials since 2013.
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Kang, D.W., Kim, C.M., Lee, J.H. et al. Performance maximization of IGCC plant considering operating limitations of a gas turbine and ambient temperature. J Mech Sci Technol 30, 2397–2408 (2016). https://doi.org/10.1007/s12206-016-0450-9
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DOI: https://doi.org/10.1007/s12206-016-0450-9