期刊
FUEL
卷 139, 期 -, 页码 516-522出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2014.08.070
关键词
Thermal dissolution; Lignite; Liquefaction
资金
- National Basic Research Program of China (973 Program) [2011CB201302]
- Natural Science Foundation of China [U1261208]
- Shenhua Group Corporation Limited [U1261208]
- Natural Scientific Foundation of China [21176001, 51174254, 21376001, 21476003]
- Strategic Chinese-Japanese Joint Research Program [2013DFG60060]
- Provincial Innovative Group for Processing & Clean Utilization of Coal Resource
Thermal dissolutions (TDs) of a Chinese Shengli lignite (SL) in various solvents at different temperatures were carried out, and the characterization and hydro-liquefaction behavior of thermal dissolution soluble fractions (TDSFs) were probed in this study. The results suggest that thermal dissolution soluble yield (TDSY) in 1-methylnaphthalene (1-MN) dramatically increased at 380 degrees C due to the obvious depolymerization of SL. Addition of polar solvent methanol or ethanol into 1-MN and crud methylnaphthalene oil (CMNO) can greatly increase the TDSY because of the methanolysis or ethanolysis reactions. Characterization of TDSFs suggests that the TDSF obtained from 1-MN at higher TD temperature contained more amounts of aromatic components. Addition of polar solvent into 1-MN, the TDSF obtained contained more amounts of oxygen groups and heavy components compared to that obtained from 1-MN. Liquefaction of TDSF suggests that TDSF can be almost completely converted by Ni-Mo-S/Al2O3 catalytic hydro-liquefaction with much higher yield of oil compared to SL raw coal. The liquefaction of the TDSF obtained from 1-MN with addition of polar solvent gave lower yield of oil and higher yield of gas than that of the TDSF obtained from 1-MN. (C) 2014 Elsevier Ltd. All rights reserved.
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