This paper describes a gas turbine combined cycle (GTCC) power plant system, which addresses the three key design challenges of post-combustion CO2 capture from the stack gas of a GTCC power plant using aqueous amine-based scrubbing method by offering the following: (i) low heat recovery steam generator (HRSG) stack gas temperature, (ii) increased HRSG stack gas CO2 content and (iii) decreased HRSG stack gas O2 content. This is achieved by combining two bottoming cycle modifications in an inventive manner, i.e., (i) high supplementary (duct) firing in the HRSG and (ii) recirculation of the HRSG stack gas. It is shown that, compared to an existing natural gas-fired GTCC power plant with post-combustion capture, it is possible to reduce the CO2 capture penalty — power diverted away from generation — by almost 65 percent and the overall capital cost ($/kW) by about 35 percent.
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ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
June 26–30, 2017
Charlotte, North Carolina, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5083-1
PROCEEDINGS PAPER
Gas Turbine Combined Cycle Optimized for Post-Combustion Carbon Capture Available to Purchase
S. Can Gülen,
S. Can Gülen
Bechtel Infrastructure & Power, Reston, VA
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Chris Hall
Chris Hall
Bechtel Oil, Gas & Chemicals, London, UK
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S. Can Gülen
Bechtel Infrastructure & Power, Reston, VA
Chris Hall
Bechtel Oil, Gas & Chemicals, London, UK
Paper No:
GT2017-65261, V003T08A008; 11 pages
Published Online:
August 17, 2017
Citation
Gülen, SC, & Hall, C. "Gas Turbine Combined Cycle Optimized for Post-Combustion Carbon Capture." Proceedings of the ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. Volume 3: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration Applications; Organic Rankine Cycle Power Systems. Charlotte, North Carolina, USA. June 26–30, 2017. V003T08A008. ASME. https://doi.org/10.1115/GT2017-65261
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