Development of iron ore oxygen carrier modified with biomass ash for chemical looping combustion
Siwen Zhang,
Haiming Gu,
Jie Zhao,
Laihong Shen and
Lilin Wang
Energy, 2019, vol. 186, issue C
Abstract:
Natural iron ore as oxygen carrier for Chemical looping combustion (CLC) for CO2 capture has attracted increasing attention. However, the major challenge of iron ore is the relatively low reactivity. In this paper, the iron ore was combined with biomass ash to promote its performance. The reduction reactivity of the combined iron ore was determined using CO in TGA and fluidized bed. Afterwards, sewage sludge CLC in a 1 kW continuous reactor was conducted using the optimal oxygen carrier. The effect of several factors on the oxygen carrier performance was discussed, including ash type, ash content and reaction temperature. The results indicate that the iron ore performance was significantly affected by ash type. The biomass ashes in iron ore promoted the reactivity of oxygen carrier except for the Si-rich rice stalk ash which caused serious particle sintering. The rape stalk ash (RSA) exhibited the best performance, but the ash content should be lower than 20% to prevent reactivity deterioration because of serious sintering. The 20% RSA combined iron ore 20RSAIO exhibited excellent fluidization characteristic and promoted reactivity stability during continuous sludge CLC process. The interaction between sludge ash and the 20RSAIO did not cause serious reactivity deterioration.
Keywords: Iron ore; Oxygen carrier; Biomass ash; Chemical looping combustion (search for similar items in EconPapers)
Date: 2019
References: Add references at CitEc
Citations: View citations in EconPapers (2)
Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544219315713
Full text for ScienceDirect subscribers only
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:186:y:2019:i:c:s0360544219315713
DOI: 10.1016/j.energy.2019.115893
Access Statistics for this article
Energy is currently edited by Henrik Lund and Mark J. Kaiser
More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().