Defluidization of the oxygen carrier ilmenite – Laboratory experiments with potassium salts

Maria Zevenhoven, Christoffer Sevonius, Patrik Salminen, Daniel Lindberg, Anders Brink, Patrik Yrjas and Leena Hupa

Energy, 2018, vol. 148, issue C, 930-940

Abstract: Use of biomass in combustion and subsequent CO2 capture ideally lead to negative CO2 emissions. New techniques for biomass conversion are Chemical Looping Combustion of Biomass (Bio-CLC) and Oxygen Carrier Aided Combustion (OCAC). In both techniques, the ash-forming elements of biomass, mainly consisting of potassium, calcium, sulfur, phosphorus, and chlorine, may interact with the oxygen carrier bed material, causing agglomeration and defluidization, and thus inhibit the oxidation/reduction reactions. The detailed mechanisms behind this effect are not properly understood. Ilmenite, an iron-titanium mineral, is used as an oxygen carrier in both CLC and OCAC.

Keywords: Chemical looping combustion (CLC); Oxygen carrier aided combustion (OCAC); Ilmenite; Ash interaction; Defluidization (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:148:y:2018:i:c:p:930-940

DOI: 10.1016/j.energy.2018.01.184

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