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CO2 capture for gas turbines: an integrated energy-efficient process combining combustion in oxygen-enriched air, flue gas recirculation, and membrane separation

Abstract : Carbon capture and storage for power generation systems is a major issue for achieving greenhouse gas emission reductions. Studies are usually dedicated to coal-fired power plants, but few efforts have addressed the challenge of CO2 capture for a gas turbine. In this paper, a recently reported hybrid process based on oxygen enriched air combustion, flue gas recycling and CO2 capture by membranes is explored for a 250 MW open cycle gas turbine. An improved configuration based on an energy recovery system integrated with a heat exchanger offers superior performance compared to the reference gas turbine cycle. It is shown that an overall energy requirement below 2 GJ(th)/ton of CO2 captured (i.e. around 205 kWh(electrical)/ton CO2) can be achieved using a highly selective membrane (CO2/N-2 selectivity of 200) operated under optimal process conditions.
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https://hal.univ-lorraine.fr/hal-01278703
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Submitted on : Wednesday, February 24, 2016 - 4:39:03 PM
Last modification on : Thursday, February 24, 2022 - 2:04:25 PM

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Bouchra Belaissaoui, Gilles Cabot, Marie-Sophie Cabot, David Willson, Eric Favre. CO2 capture for gas turbines: an integrated energy-efficient process combining combustion in oxygen-enriched air, flue gas recirculation, and membrane separation. Chemical Engineering Science, Elsevier, 2013, 97, pp.256-263. ⟨10.1016/j.ces.2013.04.027⟩. ⟨hal-01278703⟩

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