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A Novel Intake Concept for Flue Gas Recirculation to Enhance CCS in an Industrial Gas Turbine

[+] Author Affiliations
Robin C. Payne, Manuel Arias, Vassilis Stefanis

Alstom, Baden, Switzerland

Paper No. GT2014-25469, pp. V03AT07A012; 8 pages
doi:10.1115/GT2014-25469
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4565-3
  • Copyright © 2014 by Alstom Technologie AG

abstract

For the next generation of combined cycles, it is essential to not only improve the performance of a gas turbine combined cycle power plant, but also reduce its environmental impact. Flue Gas Recirculation is a useful method to increase CO2 concentration in the exhaust stream, allowing a smaller and lower cost carbon capture plant than would be required without FGR. Conventional FGR methodology requires a complex mixer with long mixing section to achieve acceptable inlet conditions for the GT compressor. A novel approach is presented, where the method of introducing the flue gas to the compressor has been substantially rethought to provide a low cost and robust FGR solution for carbon capture and sequestration applications. In this paper, CFD analysis of the flow in the intake section is used to demonstrate the operating principle of such a method, and cycle modelling calculations to compare its performance with a more conventional approach.

Copyright © 2014 by Alstom Technologie AG

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