Hydrothermal dewatering of low-rank coals: Influence on the properties and combustion characteristics of the solid products | |
Ullah, H (Ullah, Habib)[ 1,2 ]; Liu, GJ (Liu, Guijian)[ 1,2 ]; Yousaf, B (Yousaf, Balal)[ 1,2 ]; Ali, MU (Ali, Muhammad Ubaid)[ 1 ]; Abbas, Q (Abbas, Qumber)[ 1 ]; Zhou, CC (Zhou, Chuncai)[ 1 ]; Rashid, A (Rashid, Audil)[ 3 ] | |
刊名 | Energy |
2018-09-01 | |
卷号 | 158页码:1192-1203 |
关键词 | Hydrothermal Dewatering Low-rank Coal Combustion Ftir Ignition Burnout |
ISSN号 | 0360-5442 |
DOI | 10.1016/j.energy.2018.06.052 |
通讯作者 | Liu, Guijian(lgj@ustc.edu.cn) |
文献子类 | 期刊论文 |
英文摘要 | The presence of increased moisture content, low energy density and maximum spontaneous combustion tendency has raised serious environmental issues, which are obstacles to large scale utilization of coals. Hydrothermal dewatering (HTD) is a promising method for upgrading low rank coals (LRCs). The influences of HTD, executed at different temperatures on solid product yield, removal rate of elements, organics and inorganics, and combustion characteristics in LRCs were studied. HTD treatment of LRCs was carried out in 2 L cylindrical autoclave at 200–300 °C for 1 h. For upgraded coals, the inherent moisture and oxygen content decreased significantly while fixed carbon content and calorific value increased. FTIR results indicate the conversion of LRCs near to high-rank coals (HRCs). The organic matter was removed due to loss of Methylene, Methyl groups and O-containing functional groups, whereas inorganic matter was removed mainly in the forms of Fe and Ca-containing minerals. The upgraded coals had higher ignition and burnout temperatures, while their combustion was shifted and delayed toward higher temperature zone. Activation energy of treated coals increased in ignition stage while decreased in combustion segment. Prominent changes were found in coal structure, composition, rank, and combustion characteristics at HTD temperature of 300 °C. |
资助项目 | National Basic Research Program of China (973 Program)[2014CB238903] ; National Natural Science Foundation of China[41672144] ; Fundamental Research Funds for the Central Universities[WK2080000103] ; China Postdoctoral Science foundation[2018M632552] |
WOS关键词 | FIRED POWER-PLANT ; HIGH ASH COAL ; BROWN-COAL ; THERMOGRAVIMETRIC ANALYSIS ; TORREFIED BIOMASS ; DRIED PRODUCTS ; LIGNITE ; WATER ; COCOMBUSTION ; CHINESE |
WOS研究方向 | Thermodynamics ; Energy & Fuels |
语种 | 英语 |
出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
WOS记录号 | WOS:000445440500098 |
资助机构 | National Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; China Postdoctoral Science foundation |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/9573] |
专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室(2010~) |
通讯作者 | Liu, GJ (Liu, Guijian)[ 1,2 ] |
作者单位 | 1.Department of Environmental Sciences, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46000, Pakistan 2.CAS-Key Laboratory of Crust-Mantle Materials and the Environments, School of Earth and Space Sciences, University of Science and Technology of China,Hefei 230026, PR China; 3.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi'an, Shaanxi 710075, China; |
推荐引用方式 GB/T 7714 | Ullah, H ,Liu, GJ ,Yousaf, B ,et al. Hydrothermal dewatering of low-rank coals: Influence on the properties and combustion characteristics of the solid products[J]. Energy,2018,158:1192-1203. |
APA | Ullah, H .,Liu, GJ .,Yousaf, B .,Ali, MU .,Abbas, Q .,...&Rashid, A .(2018).Hydrothermal dewatering of low-rank coals: Influence on the properties and combustion characteristics of the solid products.Energy,158,1192-1203. |
MLA | Ullah, H ,et al."Hydrothermal dewatering of low-rank coals: Influence on the properties and combustion characteristics of the solid products".Energy 158(2018):1192-1203. |
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