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Energies 2017, 10(6), 745; doi:10.3390/en10060745

Effect of Gas Recycling on the Performance of a Moving Bed Temperature-Swing (MBTSA) Process for CO2 Capture in a Coal Fired Power Plant Context

SINTEF Materials and Chemistry, P. O. Box 124 Blindern, 0314 Oslo, Norway
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Academic Editor: Fernando Rubiera González
Received: 2 April 2017 / Revised: 18 May 2017 / Accepted: 20 May 2017 / Published: 25 May 2017
(This article belongs to the Special Issue CO2 Capture)
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Abstract

A mathematical model of a continuous moving-bed temperature-swing adsorption (MBTSA) process for post-combustion CO2 capture in a coal-fired power plant context has been developed. Process simulations have been done using single component isotherms and measured gas diffusion parameters of an activated carbon adsorbent. While a simple process configuration with no gas re-circulation gives quite low capture rate and CO2 purity, 86% and 65%, respectively, more advanced process configurations where some of the captured gas is recirculated to the incoming flue gas drastically increase both the capture rate and CO2 purity, the best configuration reaching capture rate of 86% and CO2 purity of 98%. Further improvements can be achieved by using adsorbents with higher CO2/N2 selectivity and/or higher temperature of the regeneration section. View Full-Text
Keywords: CO2 capture; adsorbents; post-combustion; moving bed; temperature-swing; process modelling; gPROMS; gas recycling CO2 capture; adsorbents; post-combustion; moving bed; temperature-swing; process modelling; gPROMS; gas recycling
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Mondino, G.; Grande, C.A.; Blom, R. Effect of Gas Recycling on the Performance of a Moving Bed Temperature-Swing (MBTSA) Process for CO2 Capture in a Coal Fired Power Plant Context. Energies 2017, 10, 745.

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