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Effects of Vitrinite in Low-Rank Coal on the Structure and Combustion Reactivity of Pyrolysis Chars
Xu, Yanmei1; Fu, Qingyun1; Hong, Yingmin1; Zhang, Ying1; Wang, Liang1; Bei, Ke1; Chou, I-Ming2; Hu, Haoquan3; Pan, Zhiyan1
2020-07-21
Source PublicationACS OMEGA
ISSN2470-1343
Volume5Issue:28Pages:17314-17323
AbstractPyrolysis is a highly promising technology for the efficient utilization of low-rank coal. The structure of coal plays an important role in its utilization. In this paper, the evolution of the char structure during heat treatment (200-800 degrees C) of Naomaohu coal and its different vitrinite-rich fractions was studied. The functional group structure, aromatic ring structure, and crystallite size of chars were determined by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, and X-ray diffraction (XRD) spectroscopy, respectively. The results indicated that minerals inhibit the condensation reaction of aromatic rings during pyrolysis. The high vitrinite content in coal is conducive to the formation of larger char crystallite average sizes (L-a). The relationship between L-a (1.69-3.10 nm) and the Raman band area ratio A((G)(R+VL+VR))/A(D) or A(D)/A(all) was established. In addition, the combustion performance and kinetics of chars were also investigated. The results showed that the char from high contents of the liptinite fraction has lower combustion reactivity, and demineralization treatment has significantly reduced the combustion reactivity of char.
DOI10.1021/acsomega.0c01542
Indexed BySCI ; SCI
Funding OrganizationNational Key R&D Program of China
Language英语
Funding ProjectNational Key R&D Program of China[2016YFB0600301-05]
WOS KeywordLOW-TEMPERATURE PYROLYSIS ; X-RAY-DIFFRACTION ; SIZE L-A ; CHEMICAL-STRUCTURE ; LIGNITE ; GASIFICATION ; EVOLUTION ; BEHAVIOR ; INERTINITE ; MACERALS
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000554991800033
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/7841
Collection深海科学研究部_深海极端环境模拟研究实验室
Corresponding AuthorPan, Zhiyan
Affiliation1.Zhejiang Univ Technol, Coll Environm, Hangzhou 310032, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China
3.Dalian Univ Technol, Sch Chem Engn, Inst Coal Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China
Recommended Citation
GB/T 7714
Xu, Yanmei,Fu, Qingyun,Hong, Yingmin,et al. Effects of Vitrinite in Low-Rank Coal on the Structure and Combustion Reactivity of Pyrolysis Chars[J]. ACS OMEGA,2020,5(28):17314-17323.
APA Xu, Yanmei.,Fu, Qingyun.,Hong, Yingmin.,Zhang, Ying.,Wang, Liang.,...&Pan, Zhiyan.(2020).Effects of Vitrinite in Low-Rank Coal on the Structure and Combustion Reactivity of Pyrolysis Chars.ACS OMEGA,5(28),17314-17323.
MLA Xu, Yanmei,et al."Effects of Vitrinite in Low-Rank Coal on the Structure and Combustion Reactivity of Pyrolysis Chars".ACS OMEGA 5.28(2020):17314-17323.
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