Pyrolysis kinetics of coking coal mixed with biomass under non-isothermal and isothermal conditions.
To investigate the kinetic characteristics of coking coal mixed with biomass during pyrolysis, thermogravimetric (TG) and thermo-balance reactor (TBR) analyses were conducted under non-isothermal and isothermal condition. Yellow poplar as a biomass (B) was mixed with weak coking coal (WC) and hard coking coal (HC), respectively. The calculated activation energies of WC/B blends were higher than those of HC/B blends under non-isothermal and isothermal conditions. The coal/biomass blends show increased reactivity and decreased activation energy with increasing biomass blend ratio, regardless of the coking properties of the coal. The different char structures of the WC/B and HC/B blends were analyzed by BET and SEM.
Department of Chemical Engineering, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheong ju 361-763, Republic of Korea.
Ha Myung
HM
Jeong
Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
Myung Won
MW
Seo
Department of Chemical Engineering, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheong ju 361-763, Republic of Korea. Electronic address: smjeong@chungbuk.ac.kr.
Sang Mun
SM
Jeong
Department of Chemical Engineering, Chungbuk National University, 52 Naesudong-ro, Heungdeok-gu, Cheong ju 361-763, Republic of Korea.
Byung Ki
BK
Na
Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
Sang Jun
SJ
Yoon
Clean Fuel Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
Jae Goo
JG
Lee
POSCO Technology Center, POSCO, 6261 Donghaean-ro, Nam-gu, Po hang 790-300, Republic of Korea.
Woon Jae
WJ
Lee
D056804:Biofuels; D018533:Biomass; D003031:Coal / Q000032:analysis*; D003077:Coke / Q000032:analysis*; D006358:Hot Temperature; D007700:Kinetics; D031567:Liriodendron / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D016062:Porosity; D013818:Thermogravimetry
D056804:Biofuels; D003031:Coal; D003077:Coke
Biomass; Co-pyrolysis; Hard-coking coal; Kinetics; Weak-coking coal