气候变化领域集成服务门户(CCPortal): Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal

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DOI	10.1016/j.fuel.2020.119045
	Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal
	Chen T.; Dai R.; Yellezuome D.; Zhang K.; Zhao R.; Liu G.; Wu J.
发表日期	2021
ISSN	162361
卷号	284
英文摘要	Three coal samples with different density (d < 1.35, 1.35 < d < 1.40 and d > 1.40 g cm−3) which were separated using ZnCl2 specific gravity liquid from Naomaohu (NMH) coal were investigated to understand the difference in their physicochemical and thermal properties. Fourier transform infrared spectrometry (FTIR), Raman, X-ray diffraction (XRD), solid-state 13C Nuclear Magnetic Resonance (13C NMR) and scanning electron microscopy (SEM) methods were used to determine the physicochemical characteristics of the coal sample. In addition, a TG-FTIR analyzer was used to investigate the key thermal conversion characteristics and volatile emissions of the three coal samples. Typical volatile contents including CO2, CO, CH4, and Aromatic C[dbnd]C were analyzed. Results showed that the density has great effect on functional groups and crystalline structure on coal sample. Four distinct peaks are showed in DTG curves, indicating that four reaction stages, namely, drying, desorption, pyrolysis, and polycondensation, were involved in the pyrolysis process of NMH coal. The TG/DTG curves of the three densities indicate that the low-density coal assumes the highest weight loss rate at the pyrolysis stage and the trend becomes weaker at the polycondensation stage. Two obvious emission peaks vividly showed that light gases such as CO2, CO, and CH4 can be separated into two stages at the pyrolysis and polycondensation stage. © 2020 Elsevier Ltd
英文关键词	Low-rank coal; Pyrolysis; TG-FTIR; Volatile species
scopus关键词	Carbon dioxide; Chlorine compounds; Coal; Fourier transform infrared spectroscopy; Nuclear magnetic resonance; Physicochemical properties; Polycondensation; Pyrolysis; Scanning electron microscopy; Zinc chloride; Crystalline structure; Different densities; Fourier transform infrared spectrometry; Physicochemical characteristics; Thermal conversion; Volatile contents; Volatile emissions; Weight loss rates; Density (specific gravity)
来源期刊	Fuel
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/177268
作者单位	Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao, 266101, China; Biomass Energy Engineering Research Centre, School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou, 450001, China
推荐引用方式 GB/T 7714	Chen T.,Dai R.,Yellezuome D.,et al. Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal[J],2021,284.
APA	Chen T..,Dai R..,Yellezuome D..,Zhang K..,Zhao R..,...&Wu J..(2021).Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal.Fuel,284.
MLA	Chen T.,et al."Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal".Fuel 284(2021).