TY - JOUR
T1 - Kinetic analysis and modeling of maize straw hydrochar combustion using a multi-Gaussian-distributed activation energy model
AU - Yu, Chunmei
AU - Ren, Shan
AU - Wang, Guangwei
AU - Xu, Junjun
AU - Teng, Haipeng
AU - Li, Tao
AU - Huang, Chunchao
AU - Wang, Chuan
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Nos. 52074029, 51804026) and the USTB—NTUT Joint Research Program (No. 06310063). Chuan Wang would like to acknowledge the funding support from Vinnova (dnr: 2017-01327).
Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Nos. 52074029, 51804026) and the USTB?NTUT Joint Research Program (No. 06310063). Chuan Wang would like to acknowledge the funding support from Vinnova (dnr: 2017-01327).
Publisher Copyright:
© 2022, University of Science and Technology Beijing.
PY - 2022/3
Y1 - 2022/3
N2 - Combustion kinetics of the hydrochar was investigated using a multi-Gaussian-distributed activation energy model (DAEM) to expand the knowledge on the combustion mechanisms. The results demonstrated that the kinetic parameters calculated by the multi-Gaussian-DAEM accurately represented the experimental conversion rate curves. Overall, the feedstock combustion could be divided into four stages: the decomposition of hemicellulose, cellulose, lignin, and char combustion. The hydrochar combustion could in turn be divided into three stages: the combustion of cellulose, lignin, and char. The mean activation energy ranges obtained for the cellulose, lignin, and char were 273.7–292.8, 315.1–334.5, and 354.4–370 kJ/mol, respectively, with the standard deviations of 2.1–23.1, 9.5–27.4, and 12.1–22.9 kJ/mol, respectively. The cellulose and lignin contents first increased and then decreased with increasing hydrothermal carbonization (HTC) temperature, while the mass fraction of char gradually increased.
AB - Combustion kinetics of the hydrochar was investigated using a multi-Gaussian-distributed activation energy model (DAEM) to expand the knowledge on the combustion mechanisms. The results demonstrated that the kinetic parameters calculated by the multi-Gaussian-DAEM accurately represented the experimental conversion rate curves. Overall, the feedstock combustion could be divided into four stages: the decomposition of hemicellulose, cellulose, lignin, and char combustion. The hydrochar combustion could in turn be divided into three stages: the combustion of cellulose, lignin, and char. The mean activation energy ranges obtained for the cellulose, lignin, and char were 273.7–292.8, 315.1–334.5, and 354.4–370 kJ/mol, respectively, with the standard deviations of 2.1–23.1, 9.5–27.4, and 12.1–22.9 kJ/mol, respectively. The cellulose and lignin contents first increased and then decreased with increasing hydrothermal carbonization (HTC) temperature, while the mass fraction of char gradually increased.
KW - combustion kinetics
KW - distributed activation energy model
KW - hydrothermal carbonization
KW - maize straw
UR - http://www.scopus.com/inward/record.url?scp=85123071575&partnerID=8YFLogxK
U2 - 10.1007/s12613-021-2305-3
DO - 10.1007/s12613-021-2305-3
M3 - Article
AN - SCOPUS:85123071575
SN - 1674-4799
VL - 29
SP - 464
EP - 472
JO - International Journal of Minerals, Metallurgy and Materials
JF - International Journal of Minerals, Metallurgy and Materials
IS - 3
ER -