Analysis of distillate product in the direct coal liquefaction of a Chinese bituminous coal Online publication date: Fri, 13-Mar-2020
by Rui-Li Tong; Hai-Yong Zhang; Xiong-Chao Lin; Yong-Gang Wang; Xiang-Kun Meng
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 23, No. 3, 2020
Abstract: To understand the reaction mechanism of coal liquefaction process and further improve the direct coal liquefaction (DCL) technology, a certain kind of DCL oil, which was prepared from a Chinese bituminous Yulin coal, was first separated into different fractions using improved silica-gel column chromatography (SGCC) coupled with the UV-absorbance detector, and then identified by gas chromatography-mass spectrometer (GC-MS), the comprehensive two-dimensional gas chromatography coupled with time-of-flight mass spectrometer (GC × GC-TOFMS), 1H NMR and FTIR. Around 95% of DCL oil was successfully separated into seven fractions by four mobile phases and analysed. It was found that DCL oil consists of 9.06% of alkanes, 36.32% of hydroaromatics, 17.85% of aromatics, 15.39% of oxygen-containing compounds, 16.21% of nitrogen-containing compounds and 2.33% of polyheteroatomic compounds, respectively. [Received: August 22, 2017; Accepted: March 1, 2018]
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