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Combustion Characteristics of Blended Coals with Bituminous and Sub-bituminous in Oxy-fuel Combustion Conditions  

Sung, Yon-Mo (부산대학교 기계공학부 대학원)
Moon, Cheor-Eon (부산대학교 기계공학부 대학원)
Ahn, Seong-Yool (부산대학교 기계공학부 대학원)
Kim, Seung-Il (한국남동발전 삼천포화력본부)
Seo, Sang-Il (한국전력공사 전력연구원)
Kim, Tae-Hyung (한국전력공사 전력연구원)
Jeong, Ji-Hwan (부산대학교 기계기술연구원)
Choi, Gyung-Min (부산대학교 화력발전에너지분석기술센터)
Kim, Duck-Jool (부산대학교 화력발전에너지분석기술센터)
Publication Information
Journal of the Korean Society of Combustion / v.16, no.1, 2011 , pp. 22-29 More about this Journal
Abstract
This paper focuses on the combustion characteristics of blended coals with bituminous and sub-bituminous coals under air and oxy-fuel combustion conditions. The effects of oxygen concentration and blending ratio on the combustion characteristics were experimentally investigated using a thermogravimetric analyser (TGA). Characteristic temperatures including ignition, burnout temperature and activation energy were determined from TG and DTG combustion profiles. As oxygen concentration increased and the presence of sub-bituminous coal, characteristic temperatures and activation energy decreased. The ignitability, reactivity and kinetics have all been greatly improved under oxy-fuel combustion conditions. Based on this, co-firing with bituminous and sub-bituminous coals under oxy-fuel combustion conditions may be suggested as an alternative method to the fuel flexibility and cost-effective power production with carbon capture and sequestration.
Keywords
Blended coals; Ignition temperature; Activation energy; Oxy-fuel combustion; Combustion Characteristics;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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