Thermal dissolution of lignite and liquefaction behaviors of its thermal dissolution soluble fractions
Thermal dissolution of lignite and liquefaction behaviors of its thermal dissolution soluble fractions
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褐煤的热溶解及其热溶解可溶组分的液化行为
DOI：
10.1016/j.fuel.2014.08.070
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发表时间：
2015
期刊：
影响因子：
7.4
通讯作者：
Kang, Shigang
中科院分区：
文献类型：
--
作者：
Wang, Zhicai;Lei, Zhiping;Ren, Shibiao;Kang, Shigang
本研究对中国胜利褐煤（SL）在不同溶剂中在不同温度下的热溶解（TD）进行了研究，并探讨了热溶解可溶组分（TDSF）的表征和加氢液化行为。结果表明，由于 SL 的明显解聚，1-甲基萘 (1-MN) 中的热溶解可溶产率 (TDSY) 在 380 °C 时急剧增加。在1-MN和粗甲基萘油(CMNO)中添加极性溶剂甲醇或乙醇，由于发生甲醇分解或乙醇分解反应，可大大提高TDSY。 TDSF 的表征表明，在较高 TD 温度下从 1-MN 获得的 TDSF 含有更多量的芳香族成分。在1-MN中添加极性溶剂，得到的TDSF比1-MN得到的TDSF含有更多的氧基团和重组分。 TDSF的液化表明TDSF可以通过Nisingle键Mo单键S/Al2O3催化加氢液化几乎完全转化，与SL原煤相比，油收率高得多。与从1-MN获得的TDSF相比，通过添加极性溶剂对从1-MN获得的TDSF进行液化产生了较低的油产率和较高的气体产率。
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 °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 Nisingle bondMosingle bondS/Al2O3catalytic 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.
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影响因子：
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