Carbon dioxide purity and combustion characteristics of oxy firing compared to air firing in a pilot-scale circulating fluidized bed

Ji-Hong Moon, Sung-Ho Jo, Sung Jin Park, Nguyen Hoang Khoi, Myung Won Seo, Ho Won Ra, Sang-Jun Yoon, Sung-Min Yoon, Jae-Goo Lee and Tae-Young Mun

Energy, 2019, vol. 166, issue C, 183-192

Abstract: This study aims to optimize the oxy-circulating fluidized bed combustion (oxy-CFBC) process by reducing the amount of flue gas with high-purity carbon dioxide. To achieve this, the stable transition from air mode to oxy mode is tested and validated in a 0.1-MW oxy-CFBC test rig. The results prove that flue gas carbon dioxide separation can achieve 96 vol% (dry) through a stable transition from air mode to oxy mode. Moreover, flue gas production emitted in oxy mode is reduced to one fifth compared to air mode. The proven technologies and oxy-fuel combustion database from this test rig operating experience can be used as empirical operating parameters for the next steps such as demonstration and commercial-scale operation.

Keywords: Oxy-fuel combustion; Oxy-CFBC; Carbon dioxide purity; Recycled flue gas; Emission; Combustion efficiency (search for similar items in EconPapers)
Date: 2019
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Citations: View citations in EconPapers (7)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:166:y:2019:i:c:p:183-192

DOI: 10.1016/j.energy.2018.10.045

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