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http://dx.doi.org/10.3795/KSME-B.2015.39.1.053

Combustion Characteristics for Co-firing of Biomass (Walnut Shell)  

Kim, Jin-Ho (Pusan Clean Coal Center, Dept. of Mechanical Engineering, Pusan Nat'l Univ.)
Lee, Byoung-Hwa (PLM team, Boiler R&D center, Doosan Heavy Industries & Construction, LTD.)
Sh, Lkhagvadorj (Pusan Clean Coal Center, Dept. of Mechanical Engineering, Pusan Nat'l Univ.)
Kim, Sang-In (Pusan Clean Coal Center, Dept. of Mechanical Engineering, Pusan Nat'l Univ.)
Jeon, Chung-Hwan (Pusan Clean Coal Center, Dept. of Mechanical Engineering, Pusan Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.39, no.1, 2015 , pp. 53-59 More about this Journal
Abstract
Combustion characteristics for co-firing of biomass (Walnut Shell) as blending fuel in coal fired boiler have investigated using thermogravimetric analyser (TGA) and drop tube reactor (DTR). The results show that devolatilization and char combustion for WS occurs at lower temperature than those of existing coals and has lower activation energy value, which is resulting in higher reactivity. When the WS is blended with coal, TGA results show linear profiles depending on blending ratio for each fuel. However, DTR results exist the non-additive phenomena for blending of WS. As blending ratio of WS increase, the UBC decrease at BBR 5%, but the UBC rather increase from BBR 10% due to oxygen deficiency formed from rapid combustion of WS. This paper propose that fuel lean condition by oxygen rich lead to higher blending ratio of biomass by solving the oxygen deficiency condition.
Keywords
Biomass; Activation Energy; Unburned Carbon; Blending Ratio;
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Times Cited By KSCI : 2  (Citation Analysis)
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