In this work, the “HRSC Optimizer”, a recently developed optimization methodology for the design of Heat Recovery Steam Cycles (HRSCs), Steam Generators (HRSGs) and boilers, is applied to the design of steam cycles for three interesting coal fired, gasification based, plants with CO2 capture: a Fischer-Tropsch (FT) synthesis process with high recycle fraction of the unconverted FT gases (CTL-RC-CCS), a FT synthesis process with once-through reactor (CTL-OT-CCS), and an Integrated Gasification Combined Cycle (IGCC-CCS) based on the same technologies. The analysis reveals that designing efficient HRSCs for the IGCC and the once-through FT plant is relatively straightforward, while designing the HRSC for plant CTL-RC-CCS is very challenging because the recoverable thermal power is concentrated at low temperatures (i.e., below 260 °C) and only a small fraction can be used to superheat steam. As a consequence of the improved heat integration, the electric efficiency of the three plants is increased by about 2 percentage points with respect to the solutions previously published.
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ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
June 11–15, 2012
Copenhagen, Denmark
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4469-4
PROCEEDINGS PAPER
Design Criteria and Optimization of Heat Recovery Steam Cycles for High-Efficiency, Coal-Fired, Fischer-Tropsch Plants
Emanuele Martelli,
Emanuele Martelli
Politecnico di Milano, Milano, Italy
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Thomas G. Kreutz,
Thomas G. Kreutz
Princeton University, Princeton, NJ
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Manuele Gatti,
Manuele Gatti
Politecnico di Milano, Milano, Italy
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Paolo Chiesa,
Paolo Chiesa
Politecnico di Milano, Milano, Italy
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Stefano Consonni
Stefano Consonni
Politecnico di Milano, Milano, Italy
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Emanuele Martelli
Politecnico di Milano, Milano, Italy
Thomas G. Kreutz
Princeton University, Princeton, NJ
Manuele Gatti
Politecnico di Milano, Milano, Italy
Paolo Chiesa
Politecnico di Milano, Milano, Italy
Stefano Consonni
Politecnico di Milano, Milano, Italy
Paper No:
GT2012-69661, pp. 363-373; 11 pages
Published Online:
July 9, 2013
Citation
Martelli, E, Kreutz, TG, Gatti, M, Chiesa, P, & Consonni, S. "Design Criteria and Optimization of Heat Recovery Steam Cycles for High-Efficiency, Coal-Fired, Fischer-Tropsch Plants." Proceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration. Copenhagen, Denmark. June 11–15, 2012. pp. 363-373. ASME. https://doi.org/10.1115/GT2012-69661
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