Dolomite study for in situ CO 2 capture for chemical looping reforming
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Publication date
2015Keyword
DolomiteCO2 capture
Kinetics
Modelling
Steam
Carbon dioxide capture
Activation energies
Carbonation
Peer-Reviewed
yes
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The non-isothermal kinetic and thermal behaviour of a naturally formed dolomite in conditions that approach in situ CO2 capture in chemical looping reforming, were investigated. The performance of this dolomite was studied at micro-scale in ‘dry’ conditions, as well as at macro-scale in ‘dry’ and ‘wet’ conditions to investigate the effects of scale (3 mg, 2.5 g), partial pressures of CO2 (<15 kPa) and steam, and deactivation upon limited cycling. The carbonation and calcination kinetics were modelled using an improved iterative Coats–Redfern method. Increasing CO2 partial pressures on the ‘dry’ macroscale exacerbated the experimental carbonation conversions in an inversely proportional trend when compared with those at micro-scale. The presence of steam had a positive effect on CO2 chemisorption. Steam had a negligible influence on the calcination activation energies. The activation energies of carbonation were increased for the experiments at the highest CO2 partial pressures under wet conditions.Version
Accepted manuscriptCitation
Pimenidou P and Dupont V (2015) Dolomite study for in situ CO 2 capture for chemical looping reforming. International Journal of Ambient Energy. 36(4): 170-182.Link to Version of Record
https://doi.org/10.1080/01430750.2013.841590Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1080/01430750.2013.841590