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Study of an External Fired Gas Turbine Power Plant Fed by Solid Fuel

[+] Author Affiliations
G. Riccio, F. Martelli, S. Maltagliati

University of Florence, Italy

Paper No. 2000-GT-0015, pp. V002T01A001; 7 pages
  • ASME Turbo Expo 2000: Power for Land, Sea, and Air
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Munich, Germany, May 8–11, 2000
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7855-2
  • Copyright © 2000 by ASME


The study of a gas turbine plant fed by solid fuel is discussed in this paper. The plant presented is a small one, 3 MWel, externally fired by the combustion of solid biomass. The aim of the technical discussion is to find both the energetic optimisation and the actual feasibility of the plant through available industrial components (gas turbine, heat exchanger, biomass combustor). The final optimal configuration found in the present study allows for a mix of internal (gas) and external (solid fuel) combustion. In this way higher maximum cycle temperature than in standard biomasss combustors are reached through a small addition of gaseous or liquid fuel. The technical study is based on an optimum size and configuration of the power plant, previously defined, with respect to the performance and the complexity of the plant, and in comparison with other energy conversion processes of biomass such as pyrolysis or gasification. A sensitivity analysis permits the determination an optimal gas turbine in terms of pressure ratio and TIT for the current application and indicates the most important parameters that affect the power plant performance, i.e. the components on which the performance of the plant may depend. Economic data show that the direct external combustion of solid fuel has a more favourable trade-off than the configuration of the plant with gasifier.

Copyright © 2000 by ASME



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