naa a22 4500 510821588 CHVBK 20180411083535.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11814-012-0160-7 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0160-7 Experimental study on interaction and excess heat release under oxy-fuel combustion of blended coals [Elektronische Daten] [Yonmo Sung, Cheoreon Moon, Seongyool Ahn, Gyungmin Choi, Duckjool Kim] The combustion behavior and excess heat release during the oxy-fuel combustion of blended coals were investigated experimentally using a non-isothermal thermogravimetric analyzer. The atmospheres were set to 10%O2/90%CO2, 21%O2/79%N2, 30%O2/70%CO2, and 50%O2/50%CO2, and Arthur coal (bituminous coal, BA) and KPU (sub-bituminous coal, SK) were selected as fuel with blending ratios of BA25%/SK75%, BA50%/SK50%, and BA75%/SK25%. The purpose of this study is to investigate the interaction between the blended coals and the effects of blending ratio and oxygen concentration on the excess heat release under oxy-fuel combustion. The results showed that as the oxygen concentration and proportion of sub-bituminous coal increased, the peak value in the differential thermal analysis curve increased by the enhanced reaction rate. A higher oxygen concentration led to excess heat release. The ignition temperatures depended on the volatile matter content of the sub-bituminous coal, whereas the burnout temperature was largely affected by the fixed carbon content of the bituminous coal. For interaction behaviors on characteristic temperatures, the volatile release temperature shows an additive behavior; however, ignition and burnout temperatures show non-additive behaviors for blended coals. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Blended Coals nationallicence Interactions nationallicence Excess Heat Release nationallicence Oxy-fuel Combustion nationallicence Sung Yonmo Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut Moon Cheoreon Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut Ahn Seongyool Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut Choi Gyungmin Pusan Clean Coal Center, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut Kim Duckjool Pusan Clean Coal Center, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 337-344 0256-1115 30:2<337 2013 30 11814 https://doi.org/10.1007/s11814-012-0160-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0160-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sung Yonmo Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut NATIONALLICENCE 700 1- Moon Cheoreon Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut NATIONALLICENCE 700 1- Ahn Seongyool Graduate Program, School of Mechanical Engineering, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut NATIONALLICENCE 700 1- Choi Gyungmin Pusan Clean Coal Center, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut NATIONALLICENCE 700 1- Kim Duckjool Pusan Clean Coal Center, Pusan National University, 30, Jangjeon-dong, Geumjeong-gu, 609-735, Busan, Korea aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/2(2013-02-01), 337-344 0256-1115 30:2<337 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer